ihrm/leave/views.py

"""
views.py
"""

import ast
import contextlib
import json
from collections import defaultdict
from datetime import date, datetime, timedelta
from urllib.parse import parse_qs, unquote

import pandas as pd
from django.apps import apps
from django.contrib import messages
from django.core.paginator import Paginator
from django.db import transaction
from django.db.models import ProtectedError, Q
from django.http import HttpResponse, JsonResponse
from django.shortcuts import get_object_or_404, redirect, render
from django.urls import reverse
from django.utils.encoding import force_str
from django.utils.translation import gettext as __
from django.utils.translation import gettext_lazy as _
from django.views.decorators.http import require_http_methods

from base.filters import PenaltyFilter
from base.forms import PenaltyAccountForm
from base.methods import (
    choosesubordinates,
    closest_numbers,
    eval_validate,
    export_data,
    filtersubordinates,
    get_key_instances,
    get_pagination,
    is_reportingmanager,
    sortby,
)
from base.models import CompanyLeaves, Holidays, PenaltyAccounts
from employee.models import Employee
from horilla.decorators import (
    hx_request_required,
    logger,
    login_required,
    manager_can_enter,
    owner_can_enter,
    permission_required,
)
from horilla.group_by import group_by_queryset
from horilla.horilla_settings import DYNAMIC_URL_PATTERNS
from horilla.methods import get_horilla_model_class, remove_dynamic_url
from leave.decorators import *
from leave.filters import *
from leave.forms import *
from leave.methods import (
    attendance_days,
    calculate_requested_days,
    company_leave_dates_list,
    filter_conditional_leave_request,
    holiday_dates_list,
    leave_requested_dates,
)
from leave.models import *
from leave.threading import LeaveMailSendThread
from notifications.signals import notify


def generate_error_report(error_list, error_data, file_name):
    """
    Function used to generate error excle file for imported datas
    """
    for item in error_list:
        for key, value in error_data.items():
            if key in item:
                value.append(item[key])
            else:
                value.append(None)
    keys_to_remove = [
        key for key, value in error_data.items() if all(v is None for v in value)
    ]
    for key in keys_to_remove:
        del error_data[key]
    data_frame = pd.DataFrame(error_data, columns=error_data.keys())
    styled_data_frame = data_frame.style.applymap(
        lambda x: "text-align: center", subset=pd.IndexSlice[:, :]
    )
    response = HttpResponse(content_type="application/ms-excel")
    response["Content-Disposition"] = f'attachment; filename="{file_name}"'
    writer = pd.ExcelWriter(response, engine="xlsxwriter")
    styled_data_frame.to_excel(writer, index=False, sheet_name="Sheet1")
    worksheet = writer.sheets["Sheet1"]
    worksheet.set_column("A:Z", 30)
    writer.close()

    def get_error_sheet(request):
        remove_dynamic_url(path_info)
        return response

    from leave.urls import path, urlpatterns

    path_info = f"error-sheet-{uuid.uuid4()}"
    urlpatterns.append(path(path_info, get_error_sheet, name=path_info))
    DYNAMIC_URL_PATTERNS.append(path_info)
    path_info = f"leave/{path_info}"
    return path_info


@login_required
@permission_required("leave.add_leavetype")
def leave_type_creation(request):
    """
    function used to create leave type.

    Parameters:
    request (HttpRequest): The HTTP request object.

    Returns:
    GET : return leave type creation template
    POST : return leave view
    """
    form = LeaveTypeForm()
    if request.method == "POST":
        form = LeaveTypeForm(request.POST, request.FILES)
        if form.is_valid():
            form.save()
            messages.success(request, _("New leave type Created.."))
            return redirect(leave_type_view)
    return render(request, "leave/leave_type/leave_type_creation.html", {"form": form})


def paginator_qry(qryset, page_number):
    """
    function used to paginate query set
    """
    paginator = Paginator(qryset, get_pagination())
    qryset = paginator.get_page(page_number)
    return qryset


@login_required
@permission_required("leave.view_leavetype")
def leave_type_view(request):
    """
    function used to view leave type.

    Parameters:
    request (HttpRequest): The HTTP request object.

    Returns:
    GET : return leave type template
    """

    queryset = LeaveType.objects.all().exclude(is_compensatory_leave=True)
    if (
        LeaveGeneralSetting.objects.first()
        and LeaveGeneralSetting.objects.first().compensatory_leave
    ):
        queryset = LeaveType.objects.all()
    page_number = request.GET.get("page")
    page_obj = paginator_qry(queryset, page_number)
    previous_data = request.GET.urlencode()
    leave_type_filter = LeaveTypeFilter()
    requests_ids = json.dumps(list(queryset.values_list("id", flat=True)))
    if not queryset.exists():
        template_name = "leave/leave_type/leave_type_empty_view.html"
    else:
        template_name = "leave/leave_type/leave_type_view.html"
    return render(
        request,
        template_name,
        {
            "leave_types": page_obj,
            "form": leave_type_filter.form,
            "pd": previous_data,
            "requests_ids": requests_ids,
        },
    )


@login_required
@hx_request_required
@manager_can_enter("leave.view_leavetype")
def leave_type_individual_view(request, id):
    """
    function used to view one leave type.

    Parameters:
    request (HttpRequest): The HTTP request object.

    Returns:
    GET : return one leave type view template
    """
    leave_type = LeaveType.find(id)
    requests_ids_json = request.GET.get("instances_ids")
    compensatory = request.GET.get("compensatory")
    context = {"leave_type": leave_type, "compensatory": compensatory}
    if requests_ids_json:
        requests_ids = json.loads(requests_ids_json)
        previous_id, next_id = closest_numbers(requests_ids, id)
        context["previous"] = previous_id
        context["next"] = next_id
        context["requests_ids"] = requests_ids_json
    return render(request, "leave/leave_type/leave_type_individual_view.html", context)


@login_required
@hx_request_required
@permission_required("leave.view_leavetype")
def leave_type_filter(request):
    """
    function used to filter view leave type.

    Parameters:
    request (HttpRequest): The HTTP request object.

    Returns:
    GET : return leave types template
    """
    queryset = LeaveType.objects.all()
    page_number = request.GET.get("page")
    leave_type_filter = LeaveTypeFilter(request.GET, queryset).qs
    page_obj = paginator_qry(leave_type_filter, page_number)
    previous_data = request.GET.urlencode()
    requests_ids = json.dumps(list(leave_type_filter.values_list("id", flat=True)))
    data_dict = parse_qs(previous_data)
    get_key_instances(LeaveType, data_dict)
    return render(
        request,
        "leave/leave_type/leave_types.html",
        {
            "leave_types": page_obj,
            "pd": previous_data,
            "filter_dict": data_dict,
            "requests_ids": requests_ids,
        },
    )


@login_required
@permission_required("leave.change_leavetype")
def leave_type_update(request, id, **kwargs):
    """
    function used to update leave type.

    request (HttpRequest): The HTTP request object.
    id : leave type id

    Returns:
    GET : return leave type update template
    POST : return leave type view
    """
    try:
        leave_type = LeaveType.objects.get(id=id)
    except (LeaveType.DoesNotExist, OverflowError, ValueError):
        messages.error(request, _("Leave type not found"))
        return redirect(leave_type_view)
    form = UpdateLeaveTypeForm(instance=leave_type)
    compensatory = request.GET.get("compensatory")
    redirect_url = leave_type_view
    if compensatory:
        redirect_url = compensatory_leave_settings_view
    if request.method == "POST":
        form_data = UpdateLeaveTypeForm(
            request.POST, request.FILES, instance=leave_type
        )
        if form_data.is_valid():
            form_data.save()
            messages.success(request, _("Leave type is updated successfully.."))
            return redirect(redirect_url)
    return render(
        request,
        "leave/leave_type/leave_type_update.html",
        {"form": form, "compensatory": compensatory},
    )


@login_required
@permission_required("leave.delete_leavetype")
def leave_type_delete(request, obj_id):
    """
    function used to delete leave type.

    Parameters:
    request (HttpRequest): The HTTP request object.
    id : leave type id

    Returns:
    GET : return leave type view template
    """
    try:
        LeaveType.objects.get(id=obj_id).delete()
        messages.success(request, _("Leave type deleted successfully.."))
    except (LeaveType.DoesNotExist, OverflowError, ValueError):
        messages.error(request, _("Leave type not found."))
    except ProtectedError as e:
        models_verbose_name_sets = set()
        for obj in e.protected_objects:
            models_verbose_name_sets.add(__(obj._meta.verbose_name))
        models_verbose_name_str = (",").join(models_verbose_name_sets)
        messages.error(
            request,
            _(
                "This leave types are already in use for {}".format(
                    models_verbose_name_str
                )
            ),
        )
    if request.META.get("HTTP_HX_REQUEST") == "true":
        if request.META.get("HTTP_HX_TARGET") == "objectDetailsModalTarget":
            instances_ids = request.GET.get("instances_ids")
            instances_list = json.loads(instances_ids)
            if obj_id in instances_list:
                instances_list.remove(obj_id)
            previous_instance, next_instance = closest_numbers(
                json.loads(instances_ids), obj_id
            )
            return redirect(
                f"/leave/leave-type-individual-view/{next_instance}?instances_ids={instances_list}"
            )
        return redirect(f"/leave/type-filter?{request.GET.urlencode()}")
    return redirect(leave_type_view)


@login_required
@hx_request_required
@manager_can_enter("leave.add_leaverequest")
def get_employee_leave_types(request):
    employee_id = request.GET.get("employee_id")
    form = (
        LeaveRequestUpdationForm()
        if request.GET.get("form")
        and request.GET.get("form") == "LeaveRequestUpdationForm"
        else LeaveRequestCreationForm()
    )

    if employee_id:
        employee = get_object_or_404(Employee, id=employee_id)
        assigned_leave_types = LeaveType.objects.filter(
            id__in=employee.available_leave.values_list("leave_type_id", flat=True)
        )
        form.fields["leave_type_id"].queryset = assigned_leave_types
    else:
        form.fields["leave_type_id"].queryset = LeaveType.objects.none()

    leave_type_field_html = render_to_string(
        "leave/leave_request/leave_type_field.html",
        {
            "form": form,
            "field_name": "leave_type_id",
            "field": form.fields["leave_type_id"],
        },
    )
    return HttpResponse(leave_type_field_html)


def multiple_approvals_check(id):
    approvals = LeaveRequestConditionApproval.objects.filter(leave_request_id=id)
    requested_query = approvals.filter(is_approved=False).order_by("sequence")
    approved_query = approvals.filter(is_approved=True).order_by("sequence")
    managers = []
    for manager in approvals:
        managers.append(manager.manager_id)
    if approvals.exists():
        result = {
            "managers": managers,
            "approved": approved_query,
            "requested": requested_query,
            "approvals": approvals,
        }
    else:
        result = False
    return result


@login_required
@hx_request_required
@manager_can_enter("leave.add_leaverequest")
def leave_request_creation(request, type_id=None, emp_id=None):
    """
    function used to create leave request.

    Parameters:
    request (HttpRequest): The HTTP request object.

    Returns:
    GET : return leave request form template
    POST : return leave request view
    """
    referer_parts = [
        part for part in request.META.get("HTTP_REFERER").split("/") if part != ""
    ]
    if request.GET.urlencode().startswith("pd="):
        previous_data = unquote(request.GET.urlencode())[len("pd=") :]
    else:
        request_copy = request.GET.copy()
        if "confirm" in request_copy:
            request_copy.pop("confirm")
        previous_data = request_copy.urlencode()
    form = LeaveRequestCreationForm()
    if request:
        employee = request.user.employee_get
        if employee:
            available_leaves = employee.available_leave.all()
            assigned_leave_types = LeaveType.objects.filter(
                id__in=available_leaves.values_list("leave_type_id", flat=True)
            )
            form.fields["leave_type_id"].queryset = assigned_leave_types
    if type_id and emp_id:
        initial_data = {
            "leave_type_id": type_id,
            "employee_id": emp_id,
        }
        form = LeaveRequestCreationForm(initial=initial_data)
    form = choosesubordinates(request, form, "leave.add_leaverequest")
    if request.method == "POST":
        form = LeaveRequestCreationForm(request.POST, request.FILES)
        form = choosesubordinates(request, form, "leave.add_leaverequest")
        if form.is_valid():
            leave_request = form.save(commit=False)
            save = True

            if leave_request.leave_type_id.require_approval == "no":
                employee_id = leave_request.employee_id
                leave_type_id = leave_request.leave_type_id
                available_leave = AvailableLeave.objects.get(
                    leave_type_id=leave_type_id, employee_id=employee_id
                )
                leave_request.created_by = request.user.employee_get
                leave_request.save()
                if leave_request.requested_days > available_leave.available_days:
                    leave = (
                        leave_request.requested_days - available_leave.available_days
                    )
                    leave_request.approved_available_days = (
                        available_leave.available_days
                    )
                    available_leave.available_days = 0
                    available_leave.carryforward_days = (
                        available_leave.carryforward_days - leave
                    )
                    leave_request.approved_carryforward_days = leave
                else:
                    available_leave.available_days = (
                        available_leave.available_days - leave_request.requested_days
                    )
                    leave_request.approved_available_days = leave_request.requested_days
                leave_request.status = "approved"
                available_leave.save()
            if save:
                leave_request.created_by = request.user.employee_get
                leave_request.save()

                if multiple_approvals_check(leave_request.id):
                    conditional_requests = multiple_approvals_check(leave_request.id)
                    managers = []
                    for manager in conditional_requests["managers"]:
                        managers.append(manager.employee_user_id)
                    with contextlib.suppress(Exception):
                        notify.send(
                            request.user.employee_get,
                            recipient=managers[0],
                            verb="You have a new leave request to validate.",
                            verb_ar="لديك طلب إجازة جديد يجب التحقق منه.",
                            verb_de="Sie haben eine neue Urlaubsanfrage zur Validierung.",
                            verb_es="Tiene una nueva solicitud de permiso que debe validar.",
                            verb_fr="Vous avez une nouvelle demande de congé à valider.",
                            icon="people-circle",
                            redirect=f"/leave/request-view?id={leave_request.id}",
                        )

                mail_thread = LeaveMailSendThread(
                    request, leave_request, type="request"
                )
                mail_thread.start()
                messages.success(request, _("Leave request created successfully.."))
                with contextlib.suppress(Exception):
                    notify.send(
                        request.user.employee_get,
                        recipient=leave_request.employee_id.employee_work_info.reporting_manager_id.employee_user_id,
                        verb=f"New leave request created for {leave_request.employee_id}.",
                        verb_ar=f"تم إنشاء طلب إجازة جديد لـ {leave_request.employee_id}.",
                        verb_de=f"Neuer Urlaubsantrag erstellt für {leave_request.employee_id}.",
                        verb_es=f"Nueva solicitud de permiso creada para {leave_request.employee_id}.",
                        verb_fr=f"Nouvelle demande de congé créée pour {leave_request.employee_id}.",
                        icon="people-circle",
                        redirect=reverse("request-view") + f"?id={leave_request.id}",
                    )
                form = LeaveRequestCreationForm()
                if referer_parts[-2] == "employee-view":
                    return HttpResponse("<script>window.location.reload();</script>")

            leave_requests = LeaveRequest.objects.all()
            if len(leave_requests) == 1:
                return HttpResponse("<script>window.location.reload()</script>")
    referrer = request.META.get("HTTP_REFERER", "")
    referrer = "/" + "/".join(referrer.split("/")[3:])
    if referrer == "/":
        hx_url = reverse("leave-request-and-approve")
        hx_target = "#leaveApproveCardBody"
    else:
        hx_url = "/leave/request-filter?"
        hx_target = "#leaveRequest"
    return render(
        request,
        "leave/leave_request/leave_request_form.html",
        {
            "form": form,
            "pd": previous_data,
            "hx_url": hx_url,
            "hx_target": hx_target,
        },
    )


@login_required
@manager_can_enter("leave.view_leaverequest")
def leave_request_view(request):
    """
    function used to view leave request.

    Parameters:
    request (HttpRequest): The HTTP request object.

    Returns:
    GET : return leave request view template
    """
    queryset = LeaveRequestFilter(request.GET).qs.order_by("-id").distinct()
    multiple_approvals = filter_conditional_leave_request(request).distinct()
    normal_requests = filtersubordinates(request, queryset, "leave.view_leaverequest")

    if not request.user.is_superuser:
        multi_approve_requests = LeaveRequestConditionApproval.objects.filter(
            is_approved=False, is_rejected=False
        )

        multi_ids = [request.leave_request_id.id for request in multi_approve_requests]

        # Create a new list excluding leave requests with IDs in multi_ids
        normal_requests = [
            leave.id for leave in normal_requests if leave.id not in multi_ids
        ]

        # Convert the list of IDs back to a queryset
        normal_requests = LeaveRequest.objects.filter(id__in=normal_requests).distinct()

    queryset = normal_requests | multiple_approvals
    page_number = request.GET.get("page")
    page_obj = paginator_qry(queryset, page_number)
    leave_request_filter = LeaveRequestFilter()

    # Fetching leave requests
    leave_requests = queryset

    leave_requests_with_interview = []
    if apps.is_installed("recruitment"):
        for leave_request in leave_requests:

            # Fetch interviews for the employee within the requested leave period
            InterviewSchedule = get_horilla_model_class(
                app_label="recruitment", model="interviewschedule"
            )

            interviews = InterviewSchedule.objects.filter(
                employee_id=leave_request.employee_id,
                interview_date__range=[
                    leave_request.start_date,
                    leave_request.end_date,
                ],
            )
            if interviews:
                # If interview exists then adding the leave request to the list
                leave_requests_with_interview.append(leave_request)

    requests = queryset.filter(status="requested").count()
    requests_ids = json.dumps(list(page_obj.object_list.values_list("id", flat=True)))
    approved_requests = queryset.filter(status="approved").count()
    rejected_requests = queryset.filter(status="cancelled").count()
    previous_data = request.GET.urlencode()
    data_dict = parse_qs(previous_data)
    get_key_instances(LeaveRequest, data_dict)
    return render(
        request,
        "leave/leave_request/request_view.html",
        {
            "leave_requests": page_obj,
            "pd": previous_data,
            "form": leave_request_filter.form,
            "requests": requests,
            "approved_requests": approved_requests,
            "rejected_requests": rejected_requests,
            "gp_fields": LeaveRequestReGroup.fields,
            "requests_ids": requests_ids,
            "current_date": date.today(),
            "filter_dict": data_dict,
            "leave_requests_with_interview": leave_requests_with_interview,
        },
    )


@login_required
@manager_can_enter("leave.view_leaverequest")
def leave_requests_export(request):
    if request.META.get("HTTP_HX_REQUEST") == "true":
        excel_column = LeaveRequestExportForm()
        export_filter = LeaveRequestFilter()
        context = {
            "excel_column": excel_column,
            "export_filter": export_filter.form,
        }

        return render(
            request,
            "leave/leave_request/leave_requests_export_filter.html",
            context=context,
        )
    return export_data(
        request=request,
        model=LeaveRequest,
        filter_class=LeaveRequestFilter,
        form_class=LeaveRequestExportForm,
        file_name="Leave_requests",
    )


@login_required
@hx_request_required
# @manager_can_enter("leave.view_leaverequest")
def leave_request_filter(request):
    """
    function used to filter leave request.

    Parameters:
    request (HttpRequest): The HTTP request object.

    Returns:
    GET : return leave request view template
    """
    previous_data = request.GET.urlencode()
    queryset = LeaveRequestFilter(request.GET).qs.order_by("-id")

    # Fetching leave requests
    leave_requests = queryset

    leave_requests_with_interview = []
    if apps.is_installed("recruitment"):
        for leave_request in leave_requests:

            # Fetch interviews for the employee within the requested leave period
            InterviewSchedule = get_horilla_model_class(
                app_label="recruitment", model="interviewschedule"
            )

            interviews = InterviewSchedule.objects.filter(
                employee_id=leave_request.employee_id,
                interview_date__range=[
                    leave_request.start_date,
                    leave_request.end_date,
                ],
            )
            if interviews:
                # If interview exists then adding the leave request to the list
                leave_requests_with_interview.append(leave_request)

    field = request.GET.get("field")
    multiple_approvals = filter_conditional_leave_request(request)
    queryset = filtersubordinates(request, queryset, "leave.view_leaverequest")

    if not request.user.is_superuser:
        multi_approve_requests = LeaveRequestConditionApproval.objects.filter(
            is_approved=False, is_rejected=False
        )

        multi_ids = [request.leave_request_id.id for request in multi_approve_requests]

        # Create a new list excluding leave requests with IDs in multi_ids
        queryset = [leave.id for leave in queryset if leave.id not in multi_ids]

        # Convert the list of IDs back to a queryset
        queryset = LeaveRequest.objects.filter(id__in=queryset)

    queryset = queryset.distinct()
    multiple_approvals = multiple_approvals.distinct()

    queryset = queryset | multiple_approvals
    leave_request_filter = LeaveRequestFilter(request.GET, queryset).qs
    page_number = request.GET.get("page")
    template = ("leave/leave_request/leave_requests.html",)
    if request.GET.get("sortby"):
        leave_request_filter = sortby(request, leave_request_filter, "sortby")

    if field != "" and field is not None:
        leave_request_filter = group_by_queryset(
            leave_request_filter, field, request.GET.get("page"), "page"
        )
        list_values = [entry["list"] for entry in leave_request_filter]
        id_list = []
        for value in list_values:
            for instance in value.object_list:
                id_list.append(instance.id)

        requests_ids = json.dumps(list(id_list))
        template = "leave/leave_request/group_by.html"

    else:
        leave_request_filter = paginator_qry(
            leave_request_filter, request.GET.get("page")
        )
        requests_ids = json.dumps(
            [instance.id for instance in leave_request_filter.object_list]
        )

    data_dict = []

    if not request.GET.get("dashboard"):
        data_dict = parse_qs(previous_data)
        get_key_instances(LeaveRequest, data_dict)

    if "status" in data_dict:
        status_list = data_dict["status"]
        if len(status_list) > 1:
            data_dict["status"] = [status_list[-1]]
    return render(
        request,
        template,
        {
            "leave_requests": leave_request_filter,
            "pd": previous_data,
            "filter_dict": data_dict,
            "field": field,
            "dashboard": request.GET.get("dashboard"),
            "requests_ids": requests_ids,
            "current_date": date.today(),
            "leave_requests_with_interview": leave_requests_with_interview,
        },
    )


@login_required
@hx_request_required
@manager_can_enter("leave.change_leaverequest")
def leave_request_update(request, id):
    """
    function used to update leave request.

    Parameters:
    request (HttpRequest): The HTTP request object.
    id : leave request id

    Returns:
    GET : return leave request update template
    POST : return leave request view
    """
    leave_request = LeaveRequest.objects.get(id=id)
    leave_type_id = leave_request.leave_type_id
    employee = leave_request.employee_id
    form = LeaveRequestUpdationForm(instance=leave_request)
    if employee:
        available_leaves = employee.available_leave.all()
        assigned_leave_types = LeaveType.objects.filter(
            id__in=available_leaves.values_list("leave_type_id", flat=True)
        )
        if leave_type_id not in assigned_leave_types.values_list("id", flat=True):
            assigned_leave_types = assigned_leave_types | LeaveType.objects.filter(
                id=leave_type_id.id
            )
        form.fields["leave_type_id"].queryset = assigned_leave_types
    form = choosesubordinates(request, form, "leave.add_leaverequest")
    if request.method == "POST":
        form = LeaveRequestUpdationForm(
            request.POST, request.FILES, instance=leave_request
        )
        form = choosesubordinates(request, form, "leave.add_leaverequest")
        if form.is_valid():
            leave_request = form.save(commit=False)
            save = True

            if save:
                leave_request.save()
                messages.success(request, _("Leave request is updated successfully.."))
                with contextlib.suppress(Exception):
                    notify.send(
                        request.user.employee_get,
                        recipient=leave_request.employee_id.employee_work_info.reporting_manager_id.employee_user_id,
                        verb=f"Leave request updated for {leave_request.employee_id}.",
                        verb_ar=f"تم تحديث طلب الإجازة لـ {leave_request.employee_id}.",
                        verb_de=f"Urlaubsantrag aktualisiert für {leave_request.employee_id}.",
                        verb_es=f"Solicitud de permiso actualizada para {leave_request.employee_id}.",
                        verb_fr=f"Demande de congé mise à jour pour {leave_request.employee_id}.",
                        icon="people-circle",
                        redirect=reverse("request-view") + f"?id={leave_request.id}",
                    )
                response = render(
                    request,
                    "leave/leave_request/request_update_form.html",
                    {"form": form, "id": id},
                )
                return HttpResponse(
                    response.content.decode("utf-8")
                    + "<script>location.reload();</script>"
                )

    return render(
        request,
        "leave/leave_request/request_update_form.html",
        {
            "form": form,
            "id": id,
        },
    )


@login_required
@hx_request_required
@manager_can_enter("leave.delete_leaverequest")
def leave_request_delete(request, id):
    """
    function used to delete leave request.

    Parameters:
    request (HttpRequest): The HTTP request object.
    id : leave request id

    Returns:
    GET : return leave request view template
    """
    previous_data = request.GET.urlencode()
    try:
        leave_request = LeaveRequest.objects.get(id=id)
        messages.success(request, _("Leave request deleted successfully.."))
        leave_request.delete()
    except (LeaveRequest.DoesNotExist, OverflowError, ValueError):
        messages.error(request, _("Leave request not found."))
    except ProtectedError:
        messages.error(request, _("Related entries exists"))
    hx_target = request.META.get("HTTP_HX_TARGET", None)
    if hx_target == "leaveRequest":
        leave_requests = LeaveRequest.objects.all()
        if leave_requests.exists():
            return redirect(f"/leave/request-filter?{previous_data}")
        else:
            return HttpResponse("<script>window.location.reload();</script>")
    return redirect(leave_request_view)


@login_required
@manager_can_enter("leave.change_leaverequest")
def leave_request_approve(request, id, emp_id=None):
    """
    function used to approve a leave request.

    Parameters:
    request (HttpRequest): The HTTP request object.
    id : leave request id
    emp_id : employee id if the approval operation comes from "/employee/employee-view/{employee_id}/" template.


    Returns:
    GET : If `emp_id` is provided, it returns to the "/employee/employee-view/{employee_id}/" template after approval.
          Otherwise, it returns to the default leave request view template.
    """
    leave_request = LeaveRequest.objects.get(id=id)
    employee_id = leave_request.employee_id
    leave_type_id = leave_request.leave_type_id
    available_leave = AvailableLeave.objects.get(
        leave_type_id=leave_type_id, employee_id=employee_id
    )
    total_available_leave = (
        available_leave.available_days + available_leave.carryforward_days
    )
    if leave_request.status != "approved":
        if total_available_leave >= leave_request.requested_days:
            if leave_request.requested_days > available_leave.carryforward_days:
                leave = leave_request.requested_days - available_leave.carryforward_days
                leave_request.approved_carryforward_days = (
                    available_leave.carryforward_days
                )
                available_leave.carryforward_days = 0
                available_leave.available_days = available_leave.available_days - leave
                leave_request.approved_available_days = leave
            else:
                temp = available_leave.carryforward_days
                available_leave.carryforward_days = temp - leave_request.requested_days
                leave_request.approved_carryforward_days = leave_request.requested_days
            leave_request.status = "approved"
            if not leave_request.multiple_approvals():
                super(AvailableLeave, available_leave).save()
                leave_request.save()
            else:
                if request.user.is_superuser:
                    LeaveRequestConditionApproval.objects.filter(
                        leave_request_id=leave_request
                    ).update(is_approved=True)
                    super(AvailableLeave, available_leave).save()
                    leave_request.save()
                else:
                    conditional_requests = leave_request.multiple_approvals()
                    approver = [
                        manager
                        for manager in conditional_requests["managers"]
                        if manager.employee_user_id == request.user
                    ]
                    condition_approval = LeaveRequestConditionApproval.objects.filter(
                        manager_id=approver[0], leave_request_id=leave_request
                    ).first()
                    condition_approval.is_approved = True
                    managers = []
                    for manager in conditional_requests["managers"]:
                        managers.append(manager.employee_user_id)
                    if len(managers) > condition_approval.sequence:
                        with contextlib.suppress(Exception):
                            notify.send(
                                request.user.employee_get,
                                recipient=managers[condition_approval.sequence],
                                verb="You have a new leave request to validate.",
                                verb_ar="لديك طلب إجازة جديد يجب التحقق منه.",
                                verb_de="Sie haben eine neue Urlaubsanfrage zur Validierung.",
                                verb_es="Tiene una nueva solicitud de permiso que debe validar.",
                                verb_fr="Vous avez une nouvelle demande de congé à valider.",
                                icon="people-circle",
                                redirect=f"/leave/request-view?id={leave_request.id}",
                            )

                    condition_approval.save()
                    if approver[0] == conditional_requests["managers"][-1]:
                        super(AvailableLeave, available_leave).save()
                        leave_request.save()
            messages.success(request, _("Leave request approved successfully.."))
            with contextlib.suppress(Exception):
                notify.send(
                    request.user.employee_get,
                    recipient=leave_request.employee_id.employee_user_id,
                    verb="Your Leave request has been approved",
                    verb_ar="تمت الموافقة على طلب الإجازة الخاص بك",
                    verb_de="Ihr Urlaubsantrag wurde genehmigt",
                    verb_es="Se ha aprobado su solicitud de permiso",
                    verb_fr="Votre demande de congé a été approuvée",
                    icon="people-circle",
                    redirect=reverse("user-request-view") + f"?id={leave_request.id}",
                )

            mail_thread = LeaveMailSendThread(request, leave_request, type="approve")
            mail_thread.start()
        else:
            messages.error(
                request,
                f"{employee_id} dont have enough leave days to approve the request..",
            )
    else:
        messages.error(request, _("Leave request already approved"))
    if emp_id is not None:
        employee_id = emp_id
        return redirect(f"/employee/employee-view/{employee_id}/")
    return HttpResponseRedirect(request.META.get("HTTP_REFERER", "/"))


@login_required
@manager_can_enter("leave.change_leaverequest")
def leave_request_bulk_approve(request):
    if request.method == "POST":
        request_ids = request.POST.getlist("ids")
        for request_id in request_ids:
            try:
                leave_request = (
                    LeaveRequest.objects.get(id=int(request_id)) if request_id else None
                )
                if leave_request.status == "requested" and (
                    leave_request.start_date >= datetime.today().date()
                    or request.user.has_perm("leave.change_leaverequest")
                ):
                    leave_request_approve(request, leave_request.id)
                else:
                    if leave_request.status == "approved":
                        messages.info(
                            request,
                            _("{} {} request already approved").format(
                                leave_request.employee_id, leave_request.leave_type_id
                            ),
                        )
                    elif leave_request.start_date < datetime.today().date():
                        messages.warning(
                            request,
                            _("{} {} request date exceeded").format(
                                leave_request.employee_id, leave_request.leave_type_id
                            ),
                        )
                    else:
                        messages.warning(
                            request,
                            _("{} {} can't approve.").format(
                                leave_request.employee_id, leave_request.leave_type_id
                            ),
                        )
            except (ValueError, OverflowError, LeaveRequest.DoesNotExist):
                messages.error(request, _("Leave request not found"))
                pass
    return HttpResponse("<script>window.location.reload();</script>")


@login_required
@manager_can_enter("leave.change_leaverequest")
def leave_bulk_reject(request):
    request_ids = request.POST.getlist("request_ids")

    for request_id in request_ids:
        leave_request = (
            LeaveRequest.objects.get(id=int(request_id)) if request_id else None
        )
        leave_request_cancel(request, leave_request.id)

    return HttpResponse("<script>window.location.reload();</script>")


@login_required
@manager_can_enter("leave.change_leaverequest")
def leave_request_cancel(request, id, emp_id=None):
    """
    function used to Reject leave request.

    Parameters:
    request (HttpRequest): The HTTP request object.
    id : leave request id
    emp_id : employee id if the cancel operation comes from "/employee/employee-view/{employee_id}/" template.

    Returns:
    GET : If `emp_id` is provided, it returns to the "/employee/employee-view/{employee_id}/" template after cancel.
          Otherwise, it returns to the default leave request view template.

    """
    form = RejectForm()
    if request.method == "POST":
        form = RejectForm(request.POST)
        if form.is_valid():
            leave_request = LeaveRequest.objects.get(id=id)
            employee_id = leave_request.employee_id
            leave_type_id = leave_request.leave_type_id
            available_leave = AvailableLeave.objects.get(
                leave_type_id=leave_type_id, employee_id=employee_id
            )
            if leave_request.status != "rejected":
                available_leave.available_days += leave_request.approved_available_days
                available_leave.carryforward_days += (
                    leave_request.approved_carryforward_days
                )
                leave_request.approved_available_days = 0
                leave_request.approved_carryforward_days = 0
                leave_request.status = "rejected"
                leave_request.leave_clashes_count = 0

                if leave_request.multiple_approvals() and not request.user.is_superuser:
                    conditional_requests = leave_request.multiple_approvals()
                    approver = [
                        manager
                        for manager in conditional_requests["managers"]
                        if manager.employee_user_id == request.user
                    ]
                    condition_approval = LeaveRequestConditionApproval.objects.filter(
                        manager_id=approver[0], leave_request_id=leave_request
                    ).first()
                    condition_approval.is_approved = False
                    condition_approval.is_rejected = True
                    condition_approval.save()

                leave_request.reject_reason = form.cleaned_data["reason"]
                leave_request.save()
                available_leave.save()
                comment = LeaverequestComment()
                comment.request_id = leave_request
                comment.employee_id = request.user.employee_get
                comment.comment = leave_request.reject_reason
                comment.save()

                messages.success(request, _("Leave request rejected successfully.."))
                with contextlib.suppress(Exception):
                    notify.send(
                        request.user.employee_get,
                        recipient=leave_request.employee_id.employee_user_id,
                        verb="Your leave request has been rejected.",
                        verb_ar="تم رفض طلب الإجازة الخاص بك",
                        verb_de="Ihr Urlaubsantrag wurde abgelehnt",
                        verb_es="Tu solicitud de permiso ha sido rechazada",
                        verb_fr="Votre demande de congé a été rejetée",
                        icon="people-circle",
                        redirect=reverse("user-request-view")
                        + f"?id={leave_request.id}",
                    )

                mail_thread = LeaveMailSendThread(request, leave_request, type="reject")
                mail_thread.start()
            else:
                messages.error(request, _("Leave request already rejected."))

            if emp_id is not None:
                employee_id = emp_id
                return redirect(f"/employee/employee-view/{employee_id}/")
            return HttpResponse("<script>location.reload();</script>")
    return render(
        request, "leave/leave_request/cancel_form.html", {"form": form, "id": id}
    )


@login_required
@hx_request_required
def user_leave_cancel(request, id):
    """
    function used to cancel approved leave request by employee.

    Parameters:
    request (HttpRequest): The HTTP request object.
    id : leave request id

    Returns:
    GET :  it returns to the default my leave request view template.

    """
    leave_request = LeaveRequest.objects.get(id=id)
    employee_id = leave_request.employee_id
    if employee_id.employee_user_id.id == request.user.id:
        current_date = date.today()
        if (
            leave_request.status == "approved"
            and leave_request.end_date >= current_date
        ):
            form = RejectForm()
            if request.method == "POST":
                form = RejectForm(request.POST)
                if form.is_valid():
                    leave_request.reject_reason = form.cleaned_data["reason"]
                    leave_request.status = "cancelled"
                    leave_request.save()
                    messages.success(
                        request, _("Leave request cancelled successfully..")
                    )

                    mail_thread = LeaveMailSendThread(
                        request, leave_request, type="cancel"
                    )
                    mail_thread.start()
                    return HttpResponse("<script>location.reload();</script>")
            return render(
                request,
                "leave/leave_request/user_cancel_form.html",
                {"form": form, "id": id},
            )
        messages.error(request, _("You can't cancel this leave request."))
        return HttpResponse("<script>location.reload();</script>")
    messages.error(request, _("You don't have the permission."))
    return HttpResponse("<script>location.reload();</script>")


@login_required
@hx_request_required
@manager_can_enter("leave.view_leaverequest")
def one_request_view(request, id):
    """
    function used to view one leave request.

    Parameters:
    request (HttpRequest): The HTTP request object.

    Returns:
    GET : return one leave request view template
    """
    leave_request = LeaveRequest.objects.get(id=id)
    context = {
        "leave_request": leave_request,
        "current_date": date.today(),
        "dashboard": request.GET.get("dashboard"),
    }
    requests_ids_json = request.GET.get("instances_ids")

    if requests_ids_json:
        requests_ids = json.loads(requests_ids_json)
        previous_id, next_id = closest_numbers(requests_ids, id)
        context["previous"] = previous_id
        context["next"] = next_id
        context["requests_ids"] = requests_ids_json
    return render(request, "leave/leave_request/one_request_view.html", context)


@login_required
@hx_request_required
@manager_can_enter("leave.add_availableleave")
def leave_assign_one(request, obj_id):
    """
    Assigns leave types to employees.

    Parameters:
    request (HttpRequest): The HTTP request object.
    obj_id: ID of the leave type.

    Returns:
    GET: Renders the leave type assignment form template.
    POST: Processes and assigns the leave type to selected employees.
    """
    form = LeaveOneAssignForm()
    form = choosesubordinates(request, form, "leave.add_availableleave")

    # Fetch the leave type
    leave_type = LeaveType.objects.filter(id=obj_id).first()
    if not leave_type:
        messages.error(request, _("Leave type not found."))
        return render(
            request,
            "leave/leave_assign/leave_assign_one_form.html",
            {"form": form, "id": obj_id},
        )

    if request.method == "POST":
        if leave_type.is_compensatory_leave:
            messages.info(
                request, _("Compensatory leave type cannot be assigned manually.")
            )
            return render(
                request,
                "leave/leave_assign/leave_assign_one_form.html",
                {"form": form, "id": obj_id},
            )

        employee_ids = list(map(int, request.POST.getlist("employee_id")))

        existing_leaves_set = set(
            AvailableLeave.objects.filter(
                leave_type_id=leave_type, employee_id__in=employee_ids
            ).values_list("employee_id", flat=True)
        )

        expiry_date = (
            leave_type.carryforward_expire_date
            if leave_type.carryforward_expire_date
            else None
        )
        new_employees = list(set(employee_ids) - existing_leaves_set)

        assigned_count = 0
        if new_employees:
            available_leaves = []
            for employee_id in new_employees:
                leave = AvailableLeave(
                    leave_type_id=leave_type,
                    employee_id_id=employee_id,
                    available_days=leave_type.total_days,
                )
                if leave.reset_date is None:
                    if leave_type.reset:
                        leave.reset_date = leave.set_reset_date(
                            assigned_date=leave.assigned_date, available_leave=leave
                        )

                if leave_type.carryforward_type == "carryforward expire":
                    if not expiry_date:
                        expiry_date = leave.assigned_date
                    leave.expired_date = expiry_date

                leave.total_leave_days = max(
                    leave.available_days + leave.carryforward_days, 0
                )
                leave.carryforward_days = max(leave.carryforward_days, 0)
                available_leaves.append(leave)

            AvailableLeave.objects.bulk_create(available_leaves)
            assigned_count = len(available_leaves)

            messages.success(
                request,
                _("Successfully assigned leave type to {} employees.").format(
                    assigned_count
                ),
            )
            form = LeaveOneAssignForm()

            employees = Employee.objects.filter(id__in=new_employees).only(
                "id", "employee_user_id"
            )
            notifications = [
                notify.send(
                    request.user.employee_get,
                    recipient=employee.employee_user_id,
                    verb="New leave type is assigned to you",
                    verb_ar="تم تعيين نوع إجازة جديد لك",
                    verb_de="Ihnen wurde ein neuer Urlaubstyp zugewiesen",
                    verb_es="Se le ha asignado un nuevo tipo de permiso",
                    verb_fr="Un nouveau type de congé vous a été attribué",
                    icon="people-circle",
                    redirect=reverse("user-request-view"),
                )
                for employee in employees
            ]

        if len(employee_ids) != assigned_count:
            messages.info(
                request,
                _(
                    "Leave type is already assigned to some selected {} employees."
                ).format(len(employee_ids) - assigned_count),
            )

    return render(
        request,
        "leave/leave_assign/leave_assign_one_form.html",
        {"form": form, "id": obj_id},
    )


@login_required
@manager_can_enter("leave.view_availableleave")
def leave_assign_view(request):
    """
    Function to view assigned employee leaves.

    Parameters:
    request (HttpRequest): The HTTP request object.

    Returns:
    GET : return leave assigned view template
    """
    queryset = filtersubordinates(
        request, AvailableLeave.objects.all(), "leave.view_availableleave"
    )
    previous_data = request.GET.urlencode() or "field=leave_type_id"
    field = request.GET.get("field", "leave_type_id")
    page_number = request.GET.get("page")

    # Paginate and group queryset by field
    page_obj = group_by_queryset(queryset.order_by("-id"), field, page_number)
    available_leave_ids = json.dumps(
        [instance.id for entry in page_obj for instance in entry["list"].object_list]
    )

    # Setting a condition for the template
    request.GET = request.GET.copy()
    request.GET["field"] = True

    return render(
        request,
        "leave/leave_assign/assign_view.html",
        {
            "available_leaves": page_obj,
            "f": AssignedLeaveFilter(),
            "pd": previous_data,
            "filter_dict": parse_qs(previous_data),
            "gp_fields": LeaveAssignReGroup.fields,
            "assign_form": AssignLeaveForm(),
            "available_leave_ids": available_leave_ids,
        },
    )


@login_required
@hx_request_required
@manager_can_enter("leave.view_availableleave")
def available_leave_single_view(request, obj_id):
    get_data = request.GET.copy()
    get_data.pop("instances_ids", None)
    previous_data = get_data.urlencode()

    available_leave = AvailableLeave.objects.filter(id=obj_id).first()
    instance_ids = json.loads(request.GET.get("instances_ids", "[]"))
    previous_instance, next_instance = (
        closest_numbers(instance_ids, obj_id) if instance_ids else (None, None)
    )

    content = {
        "available_leave": available_leave,
        "previous_instance": previous_instance,
        "next_instance": next_instance,
        "instance_ids_json": json.dumps(instance_ids),
        "pd": previous_data,
    }
    return render(
        request, "leave/leave_assign/single_assign_view.html", context=content
    )


@login_required
@hx_request_required
@manager_can_enter("leave.view_availableleave")
def leave_assign_filter(request):
    """
    function used to filter assign leave type to employees.

    Parameters:
    request (HttpRequest): The HTTP request object.

    Returns:
    GET : return leave type assigned view template
    """
    queryset = AvailableLeave.objects.all()
    assign_form = AssignLeaveForm()
    queryset = filtersubordinates(request, queryset, "leave.view_availableleave")
    assigned_leave_filter = AssignedLeaveFilter(request.GET, queryset).qs
    previous_data = request.GET.urlencode()
    field = request.GET.get("field")
    page_number = request.GET.get("page")
    template = ("leave/leave_assign/assigned_leave.html",)
    available_leaves = assigned_leave_filter.order_by("-id")
    if request.GET.get("sortby"):
        available_leaves = sortby(request, available_leaves, "sortby")
        available_leave_ids = json.dumps(
            [instance.id for instance in paginator_qry(available_leaves, None)]
        )
    if field != "" and field is not None:
        page_obj = group_by_queryset(available_leaves, field, page_number)
        list_values = [entry["list"] for entry in page_obj]
        id_list = []
        for value in list_values:
            for instance in value.object_list:
                id_list.append(instance.id)
        available_leave_ids = json.dumps(list(id_list))
        template = "leave/leave_assign/group_by.html"
    else:
        available_leave_ids = json.dumps(
            [instance.id for instance in paginator_qry(available_leaves, None)]
        )
        page_obj = paginator_qry(available_leaves, page_number)

    data_dict = parse_qs(previous_data)
    get_key_instances(AvailableLeave, data_dict)
    return render(
        request,
        template,
        {
            "available_leaves": page_obj,
            "pd": previous_data,
            "filter_dict": data_dict,
            "field": field,
            "assign_form": assign_form,
            "available_leave_ids": available_leave_ids,
        },
    )


@login_required
@hx_request_required
@manager_can_enter("leave.add_availableleave")
def leave_assign(request):
    """
    Function to assign multiple leave types to employees.

    Parameters:
    request (HttpRequest): The HTTP request object.

    Returns:
    GET: Render the leave assign form template.
    POST: Handle the leave type assignment.
    """
    form = AssignLeaveForm()
    form = choosesubordinates(request, form, "leave.add_availableleave")
    page_reload = AvailableLeave.objects.count() == 0

    if request.method == "POST":
        leave_type_ids = request.POST.getlist("leave_type_id")
        employee_ids = request.POST.getlist("employee_id")

        if leave_type_ids and employee_ids:
            leave_types = LeaveType.objects.filter(id__in=leave_type_ids)
            employees = Employee.objects.filter(id__in=employee_ids)

            existing_assignments = set(
                AvailableLeave.objects.filter(
                    leave_type_id__in=leave_type_ids, employee_id__in=employee_ids
                ).values_list("leave_type_id", "employee_id")
            )

            new_assignments = []
            success_messages = set()
            info_messages = set()

            for employee in employees:
                for leave_type in leave_types:
                    assignment_key = (leave_type.id, employee.id)
                    if assignment_key not in existing_assignments:
                        new_assignments.append(
                            AvailableLeave(
                                leave_type_id=leave_type,
                                employee_id=employee,
                                available_days=leave_type.total_days,
                            )
                        )
                        success_messages.add(employee.employee_user_id)
                    else:
                        info_messages.add(employee.employee_user_id)

            # Bulk create new assignments
            if new_assignments:
                with transaction.atomic():
                    AvailableLeave.objects.bulk_create(new_assignments)
                    for user_id in success_messages:
                        with contextlib.suppress(Exception):
                            notify.send(
                                request.user.employee_get,
                                recipient=user_id,
                                verb="New leave type is assigned to you",
                                verb_ar="تم تعيين نوع إجازة جديد لك",
                                verb_de="Dir wurde ein neuer Urlaubstyp zugewiesen",
                                verb_es="Se te ha asignado un nuevo tipo de permiso",
                                verb_fr="Un nouveau type de congé vous a été attribué",
                                icon="people-circle",
                                redirect=reverse("user-request-view"),
                            )
                    messages.success(request, _("Leave types assigned successfully."))

            if info_messages:
                messages.info(
                    request,
                    _("Some leave types were already assigned to {} employees.").format(
                        len(info_messages)
                    ),
                )

        if page_reload:
            return HttpResponse("<script>window.location.reload()</script>")

    return render(
        request, "leave/leave_assign/leave_assign_form.html", {"assign_form": form}
    )


@login_required
@hx_request_required
@manager_can_enter("leave.change_availableleave")
def available_leave_update(request, id):
    """
    function used to update available leave of an assigned leave type of an employee.

    Parameters:
    request (HttpRequest): The HTTP request object.
    id : available leave id

    Returns:
    GET : return available leave update form template
    POST : return leave type assigned  view
    """
    leave_assign = AvailableLeave.objects.get(id=id)
    form = AvailableLeaveUpdateForm(instance=leave_assign)
    previous_data = request.GET.urlencode() or "field=leave_type_id"
    if request.method == "POST":
        form = AvailableLeaveUpdateForm(request.POST, instance=leave_assign)
        if form.is_valid():
            available_leave = form.save()
            messages.success(request, _("Available leaves updated successfully..."))
            with contextlib.suppress(Exception):
                notify.send(
                    request.user.employee_get,
                    recipient=available_leave.employee_id.employee_user_id,
                    verb=f"Your {available_leave.leave_type_id} leave type updated.",
                    verb_ar=f"تم تحديث نوع الإجازة {available_leave.leave_type_id} الخاص بك.",
                    verb_de=f"Ihr Urlaubstyp {available_leave.leave_type_id} wurde aktualisiert.",
                    verb_es=f"Se ha actualizado su tipo de permiso {available_leave.leave_type_id}.",
                    verb_fr=f"Votre type de congé {available_leave.leave_type_id} a été mis à jour.",
                    icon="people-circle",
                    redirect=reverse("user-request-view"),
                )
    return render(
        request,
        "leave/leave_assign/available_update_form.html",
        {"form": form, "id": id, "pd": previous_data},
    )


@login_required
@hx_request_required
@manager_can_enter("leave.delete_availableleave")
def leave_assign_delete(request, obj_id):
    """
    Function to delete an assigned leave type of an employee.

    Parameters:
    - request (HttpRequest): The HTTP request object.
    - obj_id (int): Available leave ID.

    Returns:
    - Redirects to the assigned leave type view or refreshes the page.
    """
    pd = request.GET.urlencode()

    try:
        AvailableLeave.objects.get(id=obj_id).delete()
        messages.success(request, _("Assigned leave successfully deleted."))
    except AvailableLeave.DoesNotExist:
        messages.error(request, _("Assigned leave not found."))
    except ProtectedError:
        messages.error(request, _("Related entries exist."))

    if instances_ids := request.GET.get("instances_ids"):
        instances_list = json.loads(instances_ids)
        previous_instance, next_instance = closest_numbers(instances_list, obj_id)
        if obj_id in instances_list:
            instances_list.remove(obj_id)
        return redirect(
            f"/leave/available-leave-single-view/{next_instance}/?{pd}&instances_ids={json.dumps(instances_list)}"
        )

    if not AvailableLeave.objects.exists():
        return HttpResponse("<script>window.location.reload()</script>")
    return redirect(f"/leave/assign-filter?{pd}")


@require_http_methods(["POST"])
@permission_required("leave.delete_availableleave")
def leave_assign_bulk_delete(request):
    """
    This method is used to delete bulk of assigned leaves
    """
    ids = request.POST["ids"]
    ids = json.loads(ids)
    count = 0
    for assigned_leave_id in ids:
        try:
            assigned_leave = AvailableLeave.objects.get(id=assigned_leave_id)
            assigned_leave.delete()
            count += 1
        except Exception as e:
            messages.error(request, _("Assigned leave not found."))
    messages.success(
        request, _("{} assigned leaves deleted successfully ").format(count)
    )
    return JsonResponse({"message": "Success"})


def assign_leave_type_excel(_request):
    """
    Generate an empty Excel template for asisgn leave type to employee with predefined columns.

    Returns:
        HttpResponse: An HTTP response containing an empty Excel template with predefined columns.
    """
    try:
        columns = [
            "Employee Badge ID",
            "Leave Type",
        ]
        data_frame = pd.DataFrame(columns=columns)
        response = HttpResponse(content_type="application/ms-excel")
        response["Content-Disposition"] = (
            'attachment; filename="assign_leave_type_excel.xlsx"'
        )
        data_frame.to_excel(response, index=False)
        return response
    except Exception as exception:
        return HttpResponse(exception)


@login_required
@manager_can_enter("leave.add_availableleave")
def assign_leave_type_import(request):
    """
    This function accepts a POST request containing an Excel file with assigned leave type to employee data.
    It processes the data, checks for errors, and either assigns leave types to employees
    or generates an error report in the form of an Excel file.
    """
    error_data = {
        "Employee Badge ID": [],
        "Leave Type": [],
        "Badge ID Error": [],
        "Leave Type Error": [],
        "Assigned Error": [],
        "Other Errors": [],
    }

    if request.method == "POST":
        file = request.FILES["assign_leave_type_import"]
        data_frame = pd.read_excel(file)
        assign_leave_dicts = data_frame.to_dict("records")

        # Pre-fetch all employees and leave types
        employees = {emp.badge_id.lower(): emp for emp in Employee.objects.all()}
        leave_types = {lt.name.lower(): lt for lt in LeaveType.objects.all()}
        available_leaves = {
            (al.leave_type_id.id, al.employee_id.id): al
            for al in AvailableLeave.objects.all()
        }

        assign_leave_list = []
        error_list = []

        for assign_leave in assign_leave_dicts:
            badge_id = assign_leave.get("Employee Badge ID", "").strip().lower()
            assign_leave_type = assign_leave.get("Leave Type", "").strip().lower()
            employee = employees.get(badge_id)
            leave_type = leave_types.get(assign_leave_type)

            errors = []
            if employee is None:
                errors.append(_("This badge id does not exist."))
            if leave_type is None:
                errors.append(_("This leave type does not exist."))
            if errors:
                assign_leave[
                    "Badge ID Error" if "badge id" in errors[0] else "Leave Type Error"
                ] = " ".join(force_str(error) for error in errors)
                error_list.append(assign_leave)
                continue

            # Check if leave type has already been assigned to the employee
            if (leave_type.id, employee.id) in available_leaves:
                assign_leave["Assigned Error"] = _(
                    "Leave type has already been assigned to the employee."
                )
                error_list.append(assign_leave)
                continue

            # If no errors, create the AvailableLeave instance
            assign_leave_list.append(
                AvailableLeave(
                    leave_type_id=leave_type,
                    employee_id=employee,
                    available_days=leave_type.total_days,
                )
            )

        # Bulk create available leaves
        if assign_leave_list:
            AvailableLeave.objects.bulk_create(assign_leave_list)

        # Generate error report if there are errors
        path_info = None
        if error_list:
            path_info = generate_error_report(
                error_list, error_data, "AssignLeaveError.xlsx"
            )

        context = {
            "created_count": len(assign_leave_dicts) - len(error_list),
            "error_count": len(error_list),
            "model": _("Assigned Leaves"),
            "path_info": path_info,
        }
        html = render_to_string("import_popup.html", context)
        return HttpResponse(html)


@login_required
def assigned_leaves_export(request):
    hx_request = request.META.get("HTTP_HX_REQUEST")
    if hx_request:
        export_filter = AssignedLeaveFilter()
        export_column = AvailableLeaveColumnExportForm()
        content = {
            "export_filter": export_filter,
            "export_column": export_column,
        }
        return render(
            request,
            "leave/leave_assign/assigned_leaves_export_form.html",
            context=content,
        )
    return export_data(
        request=request,
        model=AvailableLeave,
        filter_class=AssignedLeaveFilter,
        form_class=AvailableLeaveColumnExportForm,
        file_name="Assign_Leave",
    )


@login_required
@hx_request_required
def get_job_positions(request):
    department_id = request.GET.get("department")
    form = RestrictLeaveForm()
    form.fields["job_position"].queryset = JobPosition.objects.filter(
        department_id=department_id
    )

    return render(request, "leave/job_position_field.html", {"form": form})


@login_required
@hx_request_required
@permission_required("leave.add_restrictleave")
def restrict_creation(request):
    """
    function used to create restricted days.

    Parameters:
    request (HttpRequest): The HTTP request object.

    Returns:
    GET : return restricted days creation form template
    POST : return restricted days view template
    """

    query_string = request.GET.urlencode()
    if query_string.startswith("pd="):
        previous_data = unquote(query_string[len("pd=") :])
    else:
        previous_data = unquote(query_string)
    form = RestrictLeaveForm()

    if request.method == "POST":
        form = RestrictLeaveForm(request.POST)
        if form.is_valid():
            form.save()
            form = RestrictLeaveForm()
            messages.success(request, _("Restricted day created successfully.."))
            if RestrictLeave.objects.filter().count() == 1:
                return HttpResponse("<script>window.location.reload();</script>")
    return render(
        request,
        "leave/restrict/restrict_form.html",
        {"form": form, "pd": previous_data},
    )


@login_required
def restrict_view(request):
    """
    function used to view restricted days.

    Parameters:
    request (HttpRequest): The HTTP request object.

    Returns:
    GET : return restricted days view  template
    """
    queryset = RestrictLeave.objects.all()[::-1]
    previous_data = request.GET.urlencode()
    page_number = request.GET.get("page")
    page_obj = paginator_qry(queryset, page_number)
    restrictday_filter = RestrictLeaveFilter()
    return render(
        request,
        "leave/restrict/view_restrict.html",
        {
            "restrictday": page_obj,
            "form": restrictday_filter.form,
            "pd": previous_data,
        },
    )


@login_required
@hx_request_required
def restrict_filter(request):
    """
    function used to filter restricted days.

    Parameters:
    request (HttpRequest): The HTTP request object.

    Returns:
    GET : return restricted days view template
    """
    queryset = RestrictLeave.objects.all()
    previous_data = request.GET.urlencode()
    restrictday_filter = RestrictLeaveFilter(request.GET, queryset).qs
    if request.GET.get("sortby"):
        restrictday_filter = sortby(request, restrictday_filter, "sortby")
    page_number = request.GET.get("page")
    page_obj = paginator_qry(restrictday_filter[::-1], page_number)
    data_dict = parse_qs(previous_data)
    get_key_instances(RestrictLeave, data_dict)
    return render(
        request,
        "leave/restrict/restrict.html",
        {"restrictday": page_obj, "pd": previous_data, "filter_dict": data_dict},
    )


@login_required
@hx_request_required
@permission_required("leave.change_restrictleave")
def restrict_update(request, id):
    """
    function used to update restricted days.

    Parameters:
    request (HttpRequest): The HTTP request object.
    id : restricted days id

    Returns:
    GET : return restricted days update form template
    POST : return restricted days view template
    """
    query_string = request.GET.urlencode()
    if query_string.startswith("pd="):
        previous_data = unquote(query_string[len("pd=") :])
    else:
        previous_data = unquote(query_string)
    restrictday = RestrictLeave.objects.get(id=id)
    form = RestrictLeaveForm(instance=restrictday)
    if request.method == "POST":
        form = RestrictLeaveForm(request.POST, instance=restrictday)
        if form.is_valid():
            form.save()
            messages.success(request, _("Restricted day updated successfully.."))
    return render(
        request,
        "leave/restrict/restrict_update_form.html",
        {"form": form, "id": id, "pd": previous_data},
    )


@login_required
@hx_request_required
@permission_required("leave.delete_restrictleave")
def restrict_delete(request, id):
    """
    function used to delete restricted days.

    Parameters:
    request (HttpRequest): The HTTP request object.
    id : restricted days id

    Returns:
    GET : return restricted days view template
    """
    query_string = request.GET.urlencode()
    try:
        RestrictLeave.objects.get(id=id).delete()
        messages.success(request, _("Restricted day deleted successfully.."))
    except RestrictLeave.DoesNotExist:
        messages.error(request, _("Restricted day not found."))
    except ProtectedError:
        messages.error(request, _("Related entries exists"))
    if not RestrictLeave.objects.filter():
        return HttpResponse("<script>window.location.reload();</script>")
    return redirect(f"/leave/restrict-filter?{query_string}")


@login_required
@hx_request_required
@permission_required("leave.delete_restrictleave")
def restrict_days_bulk_delete(request):
    """
    function used to delete multiple restricted days.

    Parameters:
    request (HttpRequest): The HTTP request object.

    Returns:
    GET : return restricted days view template
    """
    pd = request.GET.urlencode()
    if request.method == "POST":
        restrict_day_ids = request.POST.getlist("ids")
        try:
            restrict_days = RestrictLeave.objects.filter(
                id__in=restrict_day_ids
            ).delete()
            count = len(restrict_day_ids)
            messages.success(
                request,
                _("{} Leave restricted days deleted successfully").format(count),
            )
        except (OverflowError, ValueError):
            messages.error(request, _("Restricted Days not found"))
        except:
            messages.error(request, _("Something went wrong"))
    return redirect(f"/leave/restrict-filter?{pd}")


@login_required
@permission_required("leave.add_restrictleave")
def restrict_day_select(request):
    page_number = request.GET.get("page")
    if page_number == "all":
        restrict_days = RestrictLeave.objects.all()
    restrict_day_ids = [str(day.id) for day in restrict_days]
    total_count = len(restrict_day_ids)
    context = {"restrict_day_ids": restrict_day_ids, "total_count": total_count}
    return JsonResponse(context)


@login_required
@permission_required("leave.add_restrictleave")
def restrict_day_select_filter(request):
    page_number = request.GET.get("page")
    filtered = request.GET.get("filter")
    filters = json.loads(filtered) if filtered else {}

    if page_number == "all":
        restrictday_filter = RestrictLeaveFilter(
            filters, queryset=RestrictLeave.objects.all()
        )
        restrictday_filter = restrictday_filter.qs
        restrictday_ids = [str(restrictday.id) for restrictday in restrictday_filter]
        total_count = restrictday_filter.count()
        context = {"restrict_day_ids": restrictday_ids, "total_count": total_count}
        return JsonResponse(context)


@login_required
@hx_request_required
def user_leave_request(request, id):
    """
    function used to create user leave request.

    Parameters:
    request (HttpRequest): The HTTP request object.
    id : leave type id

    Returns:
    GET : return user leave request creation form template
    POST : user my leave view template
    """
    previous_data = unquote(request.GET.urlencode())[len("pd=") :]
    employee = request.user.employee_get
    leave_type = LeaveType.objects.get(id=id)
    form = UserLeaveRequestForm(
        initial={"employee_id": employee, "leave_type_id": leave_type}
    )
    if request.method == "POST":
        form = UserLeaveRequestForm(request.POST, request.FILES, employee=employee)
        start_date = datetime.strptime(request.POST.get("start_date"), "%Y-%m-%d")
        end_date = datetime.strptime(request.POST.get("end_date"), "%Y-%m-%d")
        start_date_breakdown = request.POST.get("start_date_breakdown")
        end_date_breakdown = request.POST.get("end_date_breakdown")
        available_leave = AvailableLeave.objects.get(
            employee_id=employee, leave_type_id=leave_type
        )
        available_total_leave = (
            available_leave.available_days + available_leave.carryforward_days
        )
        requested_days = calculate_requested_days(
            start_date, end_date, start_date_breakdown, end_date_breakdown
        )
        requested_dates = leave_requested_dates(start_date, end_date)
        requested_dates = [date.date() for date in requested_dates]
        holidays = Holidays.objects.all()
        holiday_dates = holiday_dates_list(holidays)
        company_leaves = CompanyLeaves.objects.all()
        company_leave_dates = company_leave_dates_list(company_leaves, start_date)
        if (
            leave_type.exclude_company_leave == "yes"
            and leave_type.exclude_holiday == "yes"
        ):
            total_leaves = list(set(holiday_dates + company_leave_dates))
            total_leave_count = sum(
                requested_date in total_leaves for requested_date in requested_dates
            )
            requested_days = requested_days - total_leave_count
        else:
            holiday_count = 0
            if leave_type.exclude_holiday == "yes":
                for requested_date in requested_dates:
                    if requested_date in holiday_dates:
                        holiday_count += 1
                requested_days = requested_days - holiday_count
            if leave_type.exclude_company_leave == "yes":
                company_leave_count = sum(
                    requested_date in company_leave_dates
                    for requested_date in requested_dates
                )
                requested_days = requested_days - company_leave_count

        if not leave_type.limit_leave or requested_days <= available_total_leave:
            if form.is_valid():
                leave_request = form.save(commit=False)
                save = True
                leave_request.leave_type_id = leave_type
                leave_request.employee_id = employee

                if leave_request.leave_type_id.require_approval == "no":
                    employee_id = leave_request.employee_id
                    leave_type_id = leave_request.leave_type_id
                    available_leave = AvailableLeave.objects.get(
                        leave_type_id=leave_type_id, employee_id=employee_id
                    )
                    if leave_request.requested_days > available_leave.available_days:
                        leave = (
                            leave_request.requested_days
                            - available_leave.available_days
                        )
                        leave_request.approved_available_days = (
                            available_leave.available_days
                        )
                        available_leave.available_days = 0
                        available_leave.carryforward_days = (
                            available_leave.carryforward_days - leave
                        )
                        leave_request.approved_carryforward_days = leave
                    else:
                        available_leave.available_days = (
                            available_leave.available_days
                            - leave_request.requested_days
                        )
                        leave_request.approved_available_days = (
                            leave_request.requested_days
                        )
                    leave_request.status = "approved"
                    available_leave.save()
                if save:
                    leave_request.created_by = employee
                    leave_request.save()

                    if multiple_approvals_check(leave_request.id):
                        conditional_requests = multiple_approvals_check(
                            leave_request.id
                        )
                        managers = []
                        for manager in conditional_requests["managers"]:
                            managers.append(manager.employee_user_id)
                        with contextlib.suppress(Exception):
                            notify.send(
                                request.user.employee_get,
                                recipient=managers[0],
                                verb="You have a new leave request to validate.",
                                verb_ar="لديك طلب إجازة جديد يجب التحقق منه.",
                                verb_de="Sie haben eine neue Urlaubsanfrage zur Validierung.",
                                verb_es="Tiene una nueva solicitud de permiso que debe validar.",
                                verb_fr="Vous avez une nouvelle demande de congé à valider.",
                                icon="people-circle",
                                redirect=f"/leave/request-view?id={leave_request.id}",
                            )
                    mail_thread = LeaveMailSendThread(
                        request, leave_request, type="request"
                    )
                    mail_thread.start()
                    messages.success(request, _("Leave request created successfully.."))
                    with contextlib.suppress(Exception):
                        notify.send(
                            request.user.employee_get,
                            recipient=leave_request.employee_id.employee_work_info.reporting_manager_id.employee_user_id,
                            verb="You have a new leave request to validate.",
                            verb_ar="لديك طلب إجازة جديد يجب التحقق منه.",
                            verb_de="Sie haben eine neue Urlaubsanfrage zur Validierung.",
                            verb_es="Tiene una nueva solicitud de permiso que debe validar.",
                            verb_fr="Vous avez une nouvelle demande de congé à valider.",
                            icon="people-circle",
                            redirect=reverse("request-view")
                            + f"?id={leave_request.id}",
                        )
                    if len(
                        LeaveRequest.objects.filter(employee_id=employee)
                    ) == 1 or request.META.get("HTTP_REFERER").endswith(
                        "employee-profile/"
                    ):
                        return HttpResponse(
                            "<script>window.location.reload();</script>"
                        )

            return render(
                request,
                "leave/user_leave/user_request_form.html",
                {
                    "form": form,
                    "id": id,
                    "leave_type": leave_type,
                    "pd": previous_data,
                },
            )
        else:
            form.add_error(
                None, _("You dont have enough leave days to make the request..")
            )
    form.fields["leave_type_id"].queryset = LeaveType.objects.filter(id=id)
    return render(
        request,
        "leave/user_leave/user_request_form.html",
        {
            "form": form,
            "id": id,
            "leave_type": leave_type,
            "pd": previous_data,
        },
    )


@login_required
@hx_request_required
def user_request_update(request, id):
    """
    function used to update user leave request.

    Parameters:
    request (HttpRequest): The HTTP request object.
    id : leave request id

    Returns:
    GET : return user leave request update form template
    POST : return user leave request view template
    """
    previous_data = request.GET.urlencode()
    leave_request = LeaveRequest.objects.get(id=id)
    try:
        if (
            request.user.employee_get == leave_request.employee_id
            and leave_request.status != "approved"
        ):
            form = UserLeaveRequestForm(
                employee=leave_request.employee_id, instance=leave_request
            )
            if request.method == "POST":
                form = UserLeaveRequestForm(
                    request.POST,
                    request.FILES,
                    instance=leave_request,
                    employee=leave_request.employee_id,
                )
                if form.is_valid():
                    leave_request = form.save(commit=False)

                    start_date = leave_request.start_date
                    end_date = leave_request.end_date
                    start_date_breakdown = leave_request.start_date_breakdown
                    end_date_breakdown = leave_request.end_date_breakdown
                    leave_type = leave_request.leave_type_id
                    employee = request.user.employee_get
                    available_leave = AvailableLeave.objects.get(
                        employee_id=employee, leave_type_id=leave_type
                    )
                    available_total_leave = (
                        available_leave.available_days
                        + available_leave.carryforward_days
                    )
                    requested_days = calculate_requested_days(
                        start_date, end_date, start_date_breakdown, end_date_breakdown
                    )
                    requested_dates = leave_requested_dates(start_date, end_date)
                    holidays = Holidays.objects.all()
                    holiday_dates = holiday_dates_list(holidays)
                    company_leaves = CompanyLeaves.objects.all()
                    company_leave_dates = company_leave_dates_list(
                        company_leaves, start_date
                    )
                    if (
                        leave_type.exclude_company_leave == "yes"
                        and leave_type.exclude_holiday == "yes"
                    ):
                        total_leaves = list(set(holiday_dates + company_leave_dates))
                        total_leave_count = sum(
                            requested_date in total_leaves
                            for requested_date in requested_dates
                        )
                        requested_days = requested_days - total_leave_count
                    else:
                        holiday_count = 0
                        if leave_type.exclude_holiday == "yes":
                            for requested_date in requested_dates:
                                if requested_date in holiday_dates:
                                    holiday_count += 1
                            requested_days = requested_days - holiday_count
                        if leave_type.exclude_company_leave == "yes":
                            company_leave_count = sum(
                                requested_date in company_leave_dates
                                for requested_date in requested_dates
                            )
                            requested_days = requested_days - company_leave_count
                    if requested_days <= available_total_leave:
                        leave_request.save()
                        messages.success(
                            request, _("Leave request updated successfully..")
                        )
                    else:
                        form.add_error(
                            None,
                            _("You dont have enough leave days to make the request.."),
                        )
            return render(
                request,
                "leave/user_leave/user_request_update.html",
                {
                    "form": form,
                    "id": id,
                    "pd": previous_data,
                },
            )
        else:
            messages.error(request, _("You can't update this leave request..."))
            return HttpResponse("<script>window.location.reload();</script>")
    except Exception as e:
        messages.error(request, _("User has no leave request.."))
    return render(
        request,
        "leave/user_leave/user_request_update.html",
        {
            "form": form,
            "id": id,
            "pd": previous_data,
        },
    )


@login_required
@hx_request_required
def user_request_delete(request, id):
    """
    function used to delete user leave request.

    Parameters:
    request (HttpRequest): The HTTP request object.
    id : leave request id

    Returns:
    GET : return user leave request view template
    """
    previous_data = request.GET.urlencode()
    try:
        leave_request = LeaveRequest.objects.get(id=id)
        if request.user.employee_get == leave_request.employee_id:
            messages.success(request, _("Leave request deleted successfully.."))
            leave_request.delete()
    except LeaveRequest.DoesNotExist:
        messages.error(request, _("User has no leave request.."))
    except ProtectedError:
        messages.error(request, _("Related entries exists"))
    if not LeaveRequest.objects.filter(employee_id=request.user.employee_get):
        return HttpResponse("<script>window.location.reload();</script>")
    else:
        return redirect(f"/leave/user-request-filter?{previous_data}")


@login_required
def user_leave_view(request):
    """
    function used to view user assigned leave types.

    Parameters:
    request (HttpRequest): The HTTP request object.

    Returns:
    GET : return user assigned leave types view template
    """
    try:
        employee = request.user.employee_get
        queryset = employee.available_leave.all()
        previous_data = request.GET.urlencode()
        page_number = request.GET.get("page")
        page_obj = paginator_qry(queryset, page_number)
        assigned_leave_filter = AssignedLeaveFilter()
        if not queryset.exists():
            template_name = "leave/user_leave/user_leave_empty_view.html"
        else:
            template_name = "leave/user_leave/user_leave_view.html"
        return render(
            request,
            template_name,
            {
                "user_leaves": page_obj,
                "form": assigned_leave_filter.form,
                "pd": previous_data,
            },
        )
    except Exception:
        messages.error(request, _("User is not an employee.."))
        return redirect("/")


@login_required
@hx_request_required
def user_leave_filter(request):
    """
    function used to filter user assigned leave types.

    Parameters:
    request (HttpRequest): The HTTP request object.

    Returns:
    GET : return user assigned leave types view template
    """
    try:
        employee = request.user.employee_get
        queryset = employee.available_leave.all()
        previous_data = request.GET.urlencode()
        page_number = request.GET.get("page")
        assigned_leave_filter = AssignedLeaveFilter(request.GET, queryset).qs
        data_dict = parse_qs(previous_data)
        get_key_instances(AvailableLeave, data_dict)
        page_obj = paginator_qry(assigned_leave_filter, page_number)
        return render(
            request,
            "leave/user_leave/user_leave.html",
            {"user_leaves": page_obj, "pd": previous_data, "filter_dict": data_dict},
        )
    except Exception as e:
        messages.error(request, _("User is not an employee.."))
        return redirect("/")


@login_required
def user_request_view(request):
    """
    function used to view user leave request.

    Parameters:
    request (HttpRequest): The HTTP request object.

    Returns:
    GET : return user leave request view template
    """
    try:
        user = request.user.employee_get
        queryset = user.leaverequest_set.all()
        previous_data = request.GET.urlencode()
        page_number = request.GET.get("page")

        # Fetching leave requests
        leave_requests = queryset

        leave_requests_with_interview = []
        if apps.is_installed("recruitment"):
            for leave_request in leave_requests:

                # Fetch interviews for the employee within the requested leave period
                InterviewSchedule = get_horilla_model_class(
                    app_label="recruitment", model="interviewschedule"
                )

                interviews = InterviewSchedule.objects.filter(
                    employee_id=leave_request.employee_id,
                    interview_date__range=[
                        leave_request.start_date,
                        leave_request.end_date,
                    ],
                )
                if interviews:
                    # If interview exists then adding the leave request to the list
                    leave_requests_with_interview.append(leave_request)

        user_request_filter = UserLeaveRequestFilter(request.GET, queryset=queryset)
        page_obj = paginator_qry(user_request_filter.qs.order_by("-id"), page_number)
        request_ids = json.dumps(
            list(page_obj.object_list.values_list("id", flat=True))
        )
        user_leave = AvailableLeave.objects.filter(employee_id=user.id).exclude(
            leave_type_id__is_compensatory_leave=True
        )
        if (
            LeaveGeneralSetting.objects.first()
            and LeaveGeneralSetting.objects.first().compensatory_leave
        ):
            user_leave = AvailableLeave.objects.filter(employee_id=user.id)
        current_date = date.today()
        return render(
            request,
            "leave/user_leave/user_request_view.html",
            {
                "leave_requests": page_obj,
                "form": user_request_filter.form,
                "pd": previous_data,
                "current_date": current_date,
                "gp_fields": MyLeaveRequestReGroup.fields,
                "request_ids": request_ids,
                "user_leaves": user_leave,
                "leave_requests_with_interview": leave_requests_with_interview,
            },
        )
    except Exception as e:
        messages.error(request, _("User is not an employee.."))
        return redirect("/")


@login_required
@hx_request_required
def user_request_filter(request):
    """
    function used to filter user leave request.

    Parameters:
    request (HttpRequest): The HTTP request object.

    Returns:
    GET : return user leave request view template
    """
    try:
        user = request.user.employee_get
        queryset = user.leaverequest_set.all().order_by("-id")
        previous_data = request.GET.urlencode()
        page_number = request.GET.get("page")
        field = request.GET.get("field")

        # Fetching leave requests
        leave_requests = queryset

        leave_requests_with_interview = []
        if apps.is_installed("recruitment"):

            for leave_request in leave_requests:

                # Fetch interviews for the employee within the requested leave period
                InterviewSchedule = get_horilla_model_class(
                    app_label="recruitment", model="interviewschedule"
                )

                interviews = InterviewSchedule.objects.filter(
                    employee_id=leave_request.employee_id,
                    interview_date__range=[
                        leave_request.start_date,
                        leave_request.end_date,
                    ],
                )
                if interviews:
                    # If interview exists then adding the leave request to the list
                    leave_requests_with_interview.append(leave_request)

        queryset = sortby(request, queryset, "sortby")
        user_request_filter = UserLeaveRequestFilter(request.GET, queryset).qs
        template = ("leave/user_leave/user_requests.html",)

        if field != "" and field is not None:
            user_request_filter = group_by_queryset(
                user_request_filter, field, request.GET.get("page"), "page"
            )
            list_values = [entry["list"] for entry in user_request_filter]
            id_list = []
            for value in list_values:
                for instance in value.object_list:
                    id_list.append(instance.id)

            requests_ids = json.dumps(list(id_list))
            template = "leave/user_leave/group_by.html"

        else:
            user_request_filter = paginator_qry(
                user_request_filter, request.GET.get("page")
            )
            requests_ids = json.dumps(
                [instance.id for instance in user_request_filter.object_list]
            )

        data_dict = parse_qs(previous_data)
        get_key_instances(LeaveRequest, data_dict)
        if "status" in data_dict:
            status_list = data_dict["status"]
            if len(status_list) > 1:
                data_dict["status"] = [status_list[-1]]

        user_leave = AvailableLeave.objects.filter(employee_id=user.id)

        context = {
            "leave_requests": user_request_filter,
            "pd": previous_data,
            "filter_dict": data_dict,
            "field": field,
            "current_date": date.today(),
            "request_ids": requests_ids,
            "user_leaves": user_leave,
            "leave_requests_with_interview": leave_requests_with_interview,
        }
        return render(request, template, context=context)
    except Exception as e:
        messages.error(request, _("User is not an employee.."))
        return redirect("/")


@login_required
@hx_request_required
def user_request_one(request, id):
    """
    function used to view one user leave request.

    Parameters:
    request (HttpRequest): The HTTP request object.

    Returns:
    GET : return one user leave request view template
    """
    leave_request = LeaveRequest.objects.get(id=id)
    try:
        requests_ids_json = request.GET.get("instances_ids")
        if requests_ids_json:
            requests_ids = json.loads(requests_ids_json)
            previous_id, next_id = closest_numbers(requests_ids, id)
        return render(
            request,
            "leave/user_leave/user_request_one.html",
            {
                "leave_request": leave_request,
                "instances_ids": requests_ids_json,
                "previous": previous_id,
                "next": next_id,
            },
        )
    except Exception as e:
        messages.error(request, _("User has no leave request.."))
        return redirect("/")


@login_required
@manager_can_enter("leave.view_leaverequest")
def employee_leave(request):
    """
    function used to view employees are leave today.

    Parameters:
    request (HttpRequest): The HTTP request object.

    Returns:
    GET : return Json response of employee
    """
    leaves = LeaveRequest.employees_on_leave_today(status="approved")
    requests_ids = list(leaves.values_list("id", flat=True))
    today_holidays = Holidays.today_holidays()
    return render(
        request,
        "leave/on_leave.html",
        {
            "leaves": leaves,
            "requests_ids": requests_ids,
            "today_holidays": today_holidays,
        },
    )


@login_required
def overall_leave(request):
    """
    function used to view overall leave in the company.

    Parameters:
    request (HttpRequest): The HTTP request object.

    Returns:
    GET : return Json response of labels, data
    """

    labels = []
    data = []
    departments = Department.objects.all()
    leave_requests = LeaveRequestFilter(request.GET).qs
    for department in departments:
        count = leave_requests.filter(
            employee_id__employee_work_info__department_id=department
        ).count()
        if count:
            labels.append(department.department)
            data.append(count)
    return JsonResponse({"labels": labels, "data": data})


@login_required
@permission_required("leave.delete_leaverequest")
def dashboard(request):
    """
    function used to view Admin dashboard in the leave module.

    Parameters:
    request (HttpRequest): The HTTP request object.

    Returns:
    GET : return Admin dasboard template.
    """
    today = date.today()
    requested = LeaveRequest.objects.filter(start_date__gte=today, status="requested")
    approved = LeaveRequest.objects.filter(
        status="approved", start_date__month=today.month
    )
    rejected = LeaveRequest.objects.filter(
        status="rejected", start_date__month=today.month
    )
    holidays = Holidays.objects.filter(start_date__gte=today)
    next_holiday = holidays.order_by("start_date").first() if holidays else None

    context = {
        "requested": requested,
        "approved": approved,
        "rejected": rejected,
        "next_holiday": next_holiday,
        "dashboard": "dashboard",
        "today": today,
        "first_day": today.replace(day=1).strftime("%Y-%m-%d"),
        "last_day": date(
            today.year, today.month, calendar.monthrange(today.year, today.month)[1]
        ).strftime("%Y-%m-%d"),
    }
    return render(request, "leave/dashboard.html", context)


@login_required
def employee_dashboard(request):
    """
    function used to view Employee dashboard in the leave module.

    Parameters:
    request (HttpRequest): The HTTP request object.

    Returns:
    GET : return Employee dasboard template.
    """
    today = date.today()
    user = Employee.objects.get(employee_user_id=request.user)
    leave_requests = LeaveRequest.objects.filter(employee_id=user)
    requested = leave_requests.filter(status="requested")
    approved = leave_requests.filter(status="approved")
    rejected = leave_requests.filter(status="rejected")

    holidays = Holidays.objects.filter(start_date__gte=today)
    next_holiday = (
        holidays.order_by("start_date").first() if holidays.exists() else None
    )

    context = {
        "leave_requests": leave_requests,
        "requested": requested,
        "approved": approved,
        "rejected": rejected,
        "next_holiday": next_holiday,
        "dashboard": "dashboard",
    }
    return render(request, "leave/employee_dashboard.html", context)


@login_required
def dashboard_leave_request(request):
    """
    function used to view leave request table.

    Parameters:
    request (HttpRequest): The HTTP request object.

    Returns:
    GET : return leave requests table.
    """
    requests_ids = []
    today = date.today()
    day = request.GET.get("date")
    employee = request.user.employee_get
    leave_requests = LeaveRequest.objects.filter(employee_id=employee)

    if day:
        day = datetime.strptime(day, "%Y-%m")
        leave_requests = leave_requests.filter(
            start_date__month=day.month, start_date__year=day.year
        )
    else:
        leave_requests = leave_requests.filter(
            start_date__month=today.month, start_date__year=today.year
        )

    requests_ids = [request.id for request in leave_requests]
    context = {
        "leave_requests": leave_requests,
        "dashboard": "dashboard",
        "requests_ids": requests_ids,
    }
    return render(request, "leave/leave_request/dashboard_leave_requests.html", context)


@login_required
def available_leave_chart(request):
    """
    function used to generate available leave chart in employee dashboard.

    Parameters:
    request (HttpRequest): The HTTP request object.

    Returns:
    GET : return Json response of labels, dataset, message.
    """
    user = Employee.objects.get(employee_user_id=request.user)
    available_leaves = AvailableLeave.objects.filter(employee_id=user).exclude(
        available_days=0
    )
    leave_count = []
    labels = []
    for leave in available_leaves:
        leave_count.append(leave.available_days + leave.carryforward_days)

        labels.append(leave.leave_type_id.name)
    dataset = [
        {
            "label": _("Total leaves available"),
            "data": leave_count,
        },
    ]
    response = {
        "labels": labels,
        "dataset": dataset,
        "message": _("Oops!! No leaves available for you this month..."),
    }
    return JsonResponse(response)


@login_required
def employee_leave_chart(request):
    """
    function used to generate employee leave chart in Admin dashboard.

    Parameters:
    request (HttpRequest): The HTTP request object.

    Returns:
    GET : return Json response of labels, dataset, message.
    """

    day = date.today()
    if request.GET.get("date"):
        day = request.GET.get("date")
        day = datetime.strptime(day, "%Y-%m")

    leave_requests = LeaveRequest.objects.filter(
        employee_id__is_active=True, status="approved"
    )
    leave_requests = leave_requests.filter(
        start_date__month=day.month, start_date__year=day.year
    )

    leave_types = leave_requests.values_list("leave_type_id__name", flat=True)

    labels = []
    dataset = []
    for employee in leave_requests.filter(
        start_date__month=day.month, start_date__year=day.year
    ):
        labels.append(employee.employee_id)

    for leave_type in list(set(leave_types)):
        dataset.append(
            {
                "label": leave_type,
                "data": [],
            }
        )

    labels = list(set(labels))
    total_leave_with_type = defaultdict(lambda: defaultdict(float))

    for label in labels:
        leaves = leave_requests.filter(
            employee_id=label, start_date__month=day.month, start_date__year=day.year
        )
        for leave in leaves:
            total_leave_with_type[leave.leave_type_id.name][label] += round(
                leave.requested_days, 2
            )

    for data in dataset:
        dataset_label = data["label"]
        data["data"] = [total_leave_with_type[dataset_label][label] for label in labels]

    employee_label = []
    for employee in list(set(labels)):
        employee_label.append(
            f"{employee.employee_first_name} {employee.employee_last_name}"
        )
    response = {
        "labels": employee_label,
        "dataset": dataset,
        "message": _("No leave request this month"),
    }
    return JsonResponse(response)


@login_required
def department_leave_chart(request):
    """
    function used to generate department leave chart in Admin dashboard.

    Parameters:
    request (HttpRequest): The HTTP request object.

    Returns:
    GET : return Json response of labels, dataset.
    """
    day = date.today()
    if request.GET.get("date"):
        day = request.GET.get("date")
        day = datetime.strptime(day, "%Y-%m")

    departments = Department.objects.all()
    department_counts = {dep.department: 0 for dep in departments}
    leave_request = LeaveRequest.objects.filter(status="approved")
    leave_request = leave_request.filter(
        start_date__month=day.month, start_date__year=day.year
    )
    leave_dates = []
    labels = []
    for leave in leave_request:
        for leave_date in leave.requested_dates():
            leave_dates.append(leave_date.strftime("%Y-%m-%d"))

        for dep in departments:
            if dep == leave.employee_id.employee_work_info.department_id:
                department_counts[dep.department] += leave.requested_days

    for department, count in department_counts.items():
        if count != 0:
            labels.append(department)
    values = list(department_counts.values())
    values = [value for value in values if value != 0]
    dataset = [
        {
            "label": _(""),
            "data": values,
        },
    ]
    response = {
        "labels": labels,
        "dataset": dataset,
        "message": _("No leave requests for this month."),
    }
    return JsonResponse(response)


@login_required
def leave_type_chart(request):
    """
    function used to generate leave type chart in Admin dashboard.

    Parameters:
    request (HttpRequest): The HTTP request object.

    Returns:
    GET : return Json response of labels, dataset.
    """
    day = date.today()
    if request.GET.get("date"):
        day = request.GET.get("date")
        day = datetime.strptime(day, "%Y-%m")

    leave_types = LeaveType.objects.all()
    leave_type_count = {types.name: 0 for types in leave_types}
    leave_request = LeaveRequest.objects.filter(status="approved")
    leave_request = leave_request.filter(
        start_date__month=day.month, start_date__year=day.year
    )
    for leave in leave_request:
        for lev in leave_types:
            if lev == leave.leave_type_id:
                leave_type_count[lev.name] += leave.requested_days

    # labels = [leave_type.name for leave_type in leave_types]
    labels = []
    for leave_type, count in leave_type_count.items():
        if count != 0:
            labels.append(leave_type)
    values = list(leave_type_count.values())
    values = [value for value in values if value != 0]

    response = {
        "labels": labels,
        "dataset": [
            {
                "data": values,
            },
        ],
        "message": _("No leave requests for any leave type this month."),
    }
    return JsonResponse(response)


@login_required
def leave_over_period(request):
    """
    function used to generate leave over a week chart in Admin dashboard.

    Parameters:
    request (HttpRequest): The HTTP request object.

    Returns:
    GET : return Json response of labels, dataset.
    """
    today = date.today()
    start_of_week = today - timedelta(days=today.weekday())
    week_dates = [start_of_week + timedelta(days=i) for i in range(6)]

    leave_in_week = []

    leave_request = LeaveRequest.objects.filter(status="approved")
    leave_dates = []
    for leave in leave_request:
        for leave_date in leave.requested_dates():
            leave_dates.append(leave_date)

    filtered_dates = [
        day
        for day in leave_dates
        if day.month == today.month and day.year == today.year
    ]
    for week_date in week_dates:
        days = []
        for filtered_date in filtered_dates:
            if filtered_date == week_date:
                days.append(filtered_date)
        leave_in_week.append(len(days))

    dataset = (
        {
            "label": _("Leave Trends"),
            "data": leave_in_week,
        },
    )

    labels = [week_date.strftime("%d-%m-%Y") for week_date in week_dates]

    response = {
        "labels": labels,
        "dataset": dataset,
    }
    return JsonResponse(response)


@login_required
@hx_request_required
def leave_request_create(request):
    """
    function used to create leave request from calendar.

    Parameters:
    request (HttpRequest): The HTTP request object.

    Returns:
    GET : return leave request form template
    POST : return leave request view
    """
    previous_data = unquote(request.GET.urlencode())[len("pd=") :]
    emp = request.user.employee_get
    emp_id = emp.id

    form = UserLeaveRequestCreationForm(employee=emp)
    if request.method == "POST":
        form = UserLeaveRequestCreationForm(request.POST, request.FILES, employee=emp)
        if int(form.data["employee_id"]) == int(emp_id):
            if form.is_valid():
                leave_request = form.save(commit=False)
                save = True

                if leave_request.leave_type_id.require_approval == "no":
                    employee_id = leave_request.employee_id
                    leave_type_id = leave_request.leave_type_id
                    available_leave = AvailableLeave.objects.get(
                        leave_type_id=leave_type_id, employee_id=employee_id
                    )
                    if leave_request.requested_days > available_leave.available_days:
                        leave = (
                            leave_request.requested_days
                            - available_leave.available_days
                        )
                        leave_request.approved_available_days = (
                            available_leave.available_days
                        )
                        available_leave.available_days = 0
                        available_leave.carryforward_days = (
                            available_leave.carryforward_days - leave
                        )
                        leave_request.approved_carryforward_days = leave
                    else:
                        available_leave.available_days = (
                            available_leave.available_days
                            - leave_request.requested_days
                        )
                        leave_request.approved_available_days = (
                            leave_request.requested_days
                        )
                    leave_request.status = "approved"
                    available_leave.save()
                if save:
                    leave_request.created_by = request.user.employee_get
                    leave_request.save()

                    if multiple_approvals_check(leave_request.id):
                        conditional_requests = multiple_approvals_check(
                            leave_request.id
                        )
                        managers = []
                        for manager in conditional_requests["managers"]:
                            managers.append(manager.employee_user_id)
                        with contextlib.suppress(Exception):
                            notify.send(
                                request.user.employee_get,
                                recipient=managers[0],
                                verb="You have a new leave request to validate.",
                                verb_ar="لديك طلب إجازة جديد يجب التحقق منه.",
                                verb_de="Sie haben eine neue Urlaubsanfrage zur Validierung.",
                                verb_es="Tiene una nueva solicitud de permiso que debe validar.",
                                verb_fr="Vous avez une nouvelle demande de congé à valider.",
                                icon="people-circle",
                                redirect=f"/leave/request-view?id={leave_request.id}",
                            )

                    messages.success(request, _("Leave request created successfully.."))
                    with contextlib.suppress(Exception):
                        notify.send(
                            request.user.employee_get,
                            recipient=leave_request.employee_id.employee_work_info.reporting_manager_id.employee_user_id,
                            verb=f"New leave request created for {leave_request.employee_id}.",
                            verb_ar=f"تم إنشاء طلب إجازة جديد لـ {leave_request.employee_id}.",
                            verb_de=f"Neuer Urlaubsantrag für {leave_request.employee_id} erstellt.",
                            verb_es=f"Nueva solicitud de permiso creada para {leave_request.employee_id}.",
                            verb_fr=f"Nouvelle demande de congé créée pour {leave_request.employee_id}.",
                            icon="people-circle",
                            redirect=reverse("request-view")
                            + f"?id={leave_request.id}",
                        )

                    mail_thread = LeaveMailSendThread(
                        request, leave_request, type="request"
                    )
                    mail_thread.start()
                    form = UserLeaveRequestCreationForm(employee=emp)
                    if len(LeaveRequest.objects.filter(employee_id=emp_id)) == 1:
                        return HttpResponse(
                            "<script>window.location.reload();</script>"
                        )
            return render(
                request,
                "leave/user_leave/request_form.html",
                {
                    "form": form,
                    "pd": previous_data,
                },
            )
        else:
            messages.error(request, _("You don't have permission"))
            response = render(
                request, "leave/user_leave/request_form.html", {"form": form}
            )
            return HttpResponse(
                response.content.decode("utf-8") + "<script>location.reload();</script>"
            )
    return render(
        request,
        "leave/user_leave/request_form.html",
        {
            "form": form,
            "pd": previous_data,
        },
    )


@login_required
def leave_allocation_request_view(request):
    """
    function used to view leave allocation request.

    Parameters:
    request (HttpRequest): The HTTP request object.

    Returns:
    GET : return leave allocation request view template
    """
    employee = request.user.employee_get
    queryset = LeaveAllocationRequest.objects.all().order_by("-id")
    queryset = LeaveAllocationRequestFilter(request.GET, queryset).qs
    queryset = filtersubordinates(
        request, queryset, "leave.view_leaveallocationrequest"
    )
    page_number = request.GET.get("page")
    leave_allocation_requests = paginator_qry(queryset, page_number)
    requests_ids = json.dumps(
        list(leave_allocation_requests.object_list.values_list("id", flat=True))
    )
    my_leave_allocation_requests = LeaveAllocationRequest.objects.filter(
        employee_id=employee.id
    ).order_by("-id")
    my_leave_allocation_requests = LeaveAllocationRequestFilter(
        request.GET, my_leave_allocation_requests
    ).qs
    my_page_number = request.GET.get("m_page")
    my_leave_allocation_requests = paginator_qry(
        my_leave_allocation_requests, my_page_number
    )
    my_requests_ids = json.dumps(
        list(my_leave_allocation_requests.object_list.values_list("id", flat=True))
    )
    leave_allocation_request_filter = LeaveAllocationRequestFilter()
    previous_data = request.GET.urlencode()
    data_dict = parse_qs(previous_data)
    data_dict = get_key_instances(LeaveAllocationRequest, data_dict)
    context = {
        "leave_allocation_requests": leave_allocation_requests,
        "my_leave_allocation_requests": my_leave_allocation_requests,
        "pd": previous_data,
        "form": leave_allocation_request_filter.form,
        "filter_dict": data_dict,
        "gp_fields": LeaveAllocationRequestReGroup.fields,
        "requests_ids": requests_ids,
        "my_requests_ids": my_requests_ids,
    }
    return render(
        request,
        "leave/leave_allocation_request/leave_allocation_request_view.html",
        context=context,
    )


@login_required
@hx_request_required
def leave_allocation_request_single_view(request, req_id):
    """
    function used to present the leave allocation request detailed view.

    Parameters:
    request (HttpRequest): The HTTP request object.
    req_id : leave allocation request id

    Returns:
    return leave allocation request single view
    """
    my_request = False
    if request.GET.get("my_request") == "True":
        my_request = True
    requests_ids_json = request.GET.get("instances_ids")
    if requests_ids_json:
        requests_ids = json.loads(requests_ids_json)
        previous_id, next_id = closest_numbers(requests_ids, req_id)
    leave_allocation_request = LeaveAllocationRequest.find(req_id)
    context = {
        "leave_allocation_request": leave_allocation_request,
        "my_request": my_request,
        "instances_ids": requests_ids_json,
        "previous": previous_id,
        "next": next_id,
        "dashboard": request.GET.get("dashboard"),
    }
    return render(
        request,
        "leave/leave_allocation_request/leave_allocation_request_single_view.html",
        context=context,
    )


@login_required
@hx_request_required
def leave_allocation_request_create(request):
    """
    function used to create leave allocation request.

    Parameters:
    request (HttpRequest): The HTTP request object.

    Returns:
    GET : return leave allocation request form template
    POST : return leave allocation request view
    """
    employee = request.user.employee_get
    form = LeaveAllocationRequestForm(initial={"employee_id": employee})
    form = choosesubordinates(request, form, "leave.add_leaveallocationrequest")
    form.fields["employee_id"].queryset = form.fields[
        "employee_id"
    ].queryset | Employee.objects.filter(employee_user_id=request.user)
    if request.method == "POST":
        form = LeaveAllocationRequestForm(request.POST, request.FILES)
        if form.is_valid():
            leave_allocation_request = form.save(commit=False)
            leave_allocation_request.skip_history = False
            leave_allocation_request.save()
            messages.success(request, _("New Leave allocation request is created"))
            with contextlib.suppress(Exception):
                notify.send(
                    request.user.employee_get,
                    recipient=leave_allocation_request.employee_id.employee_work_info.reporting_manager_id.employee_user_id,
                    verb=f"New leave allocation request created for {leave_allocation_request.employee_id}.",
                    verb_ar=f"تم إنشاء طلب تخصيص إجازة جديد لـ {leave_allocation_request.employee_id}.",
                    verb_de=f"Neue Anfrage zur Urlaubszuweisung erstellt für {leave_allocation_request.employee_id}.",
                    verb_es=f"Nueva solicitud de asignación de permisos creada para {leave_allocation_request.employee_id}.",
                    verb_fr=f"Nouvelle demande d'allocation de congé créée pour {leave_allocation_request.employee_id}.",
                    icon="people-cicle",
                    redirect=reverse("leave-allocation-request-view")
                    + f"?id={leave_allocation_request.id}",
                )
            response = render(
                request,
                "leave/leave_allocation_request/leave_allocation_request_create.html",
                {"form": form},
            )
            return HttpResponse(
                response.content.decode("utf-8")
                + "<script>location. reload();</script>"
            )
    context = {"form": form}
    return render(
        request,
        "leave/leave_allocation_request/leave_allocation_request_create.html",
        context=context,
    )


@login_required
@hx_request_required
def leave_allocation_request_filter(request):
    field = request.GET.get("field")
    employee = request.user.employee_get
    page_number = request.GET.get("page")
    my_page_number = request.GET.get("m_page")
    previous_data = request.GET.urlencode()
    template = "leave/leave_allocation_request/leave_allocation_request_list.html"

    # Filter leave allocation requests
    leave_allocation_requests_filtered = LeaveAllocationRequestFilter(
        request.GET
    ).qs.order_by("-id")
    my_leave_allocation_requests_filtered = LeaveAllocationRequest.objects.filter(
        employee_id=employee.id
    ).order_by("-id")
    my_leave_allocation_requests_filtered = LeaveAllocationRequestFilter(
        request.GET, my_leave_allocation_requests_filtered
    ).qs
    leave_allocation_requests_filtered = filtersubordinates(
        request, leave_allocation_requests_filtered, "leave.view_leaveallocationrequest"
    )

    # Sort leave allocation requests if requested
    if request.GET.get("sortby"):
        leave_allocation_requests_filtered = sortby(
            request, leave_allocation_requests_filtered, "sortby"
        )

    # Group leave allocation requests if field parameter is provided
    if field:
        leave_allocation_requests = group_by_queryset(
            leave_allocation_requests_filtered, field, page_number, "page"
        )
        my_leave_allocation_requests = group_by_queryset(
            my_leave_allocation_requests_filtered, field, my_page_number, "m_page"
        )

        # Convert IDs to JSON format for details view
        list_values = [entry["list"] for entry in leave_allocation_requests]
        id_list = [
            instance.id for value in list_values for instance in value.object_list
        ]
        requests_ids = json.dumps(list(id_list))

        list_values = [entry["list"] for entry in my_leave_allocation_requests]
        id_list = [
            instance.id for value in list_values for instance in value.object_list
        ]
        my_requests_ids = json.dumps(list(id_list))
        template = (
            "leave/leave_allocation_request/leave_allocation_request_group_by.html"
        )
    else:
        leave_allocation_requests = paginator_qry(
            leave_allocation_requests_filtered, page_number
        )
        my_leave_allocation_requests = paginator_qry(
            my_leave_allocation_requests_filtered, my_page_number
        )
        requests_ids = json.dumps(
            list(leave_allocation_requests.object_list.values_list("id", flat=True))
        )
        my_requests_ids = json.dumps(
            list(my_leave_allocation_requests.object_list.values_list("id", flat=True))
        )

    # Parse previous data and construct context for filter tag
    data_dict = parse_qs(previous_data)
    data_dict = get_key_instances(LeaveAllocationRequest, data_dict)
    data_dict.pop("m_page", None)

    context = {
        "leave_allocation_requests": leave_allocation_requests,
        "my_leave_allocation_requests": my_leave_allocation_requests,
        "pd": previous_data,
        "filter_dict": data_dict,
        "field": field,
        "requests_ids": requests_ids,
        "my_requests_ids": my_requests_ids,
    }
    return render(request, template, context=context)


@login_required
@hx_request_required
@leave_allocation_change_permission()
def leave_allocation_request_update(request, req_id):
    """
    function used to update leave allocation request.

    Parameters:
    request (HttpRequest): The HTTP request object.
    req_id : leave allocation request id

    Returns:
    GET : return leave allocation request update template
    POST : return leave allocation request view
    """
    leave_allocation_request = LeaveAllocationRequest.objects.get(id=req_id)
    form = LeaveAllocationRequestForm(instance=leave_allocation_request)
    form = choosesubordinates(request, form, "leave.add_leaveallocationrequest")
    form.fields["employee_id"].queryset = form.fields[
        "employee_id"
    ].queryset | Employee.objects.filter(employee_user_id=request.user)
    if leave_allocation_request.status != "approved":
        if request.method == "POST":
            form = LeaveAllocationRequestForm(
                request.POST, request.FILES, instance=leave_allocation_request
            )
            if form.is_valid():
                leave_allocation_request = form.save(commit=False)
                leave_allocation_request.skip_history = False
                leave_allocation_request.save()
                messages.success(
                    request, _("Leave allocation request is updated successfully.")
                )
                with contextlib.suppress(Exception):
                    notify.send(
                        request.user.employee_get,
                        recipient=leave_allocation_request.employee_id.employee_work_info.reporting_manager_id.employee_user_id,
                        verb=f"Leave allocation request updated for {leave_allocation_request.employee_id}.",
                        verb_ar=f"تم تحديث طلب تخصيص الإجازة لـ {leave_allocation_request.employee_id}.",
                        verb_de=f"Urlaubszuteilungsanforderung aktualisiert für {leave_allocation_request.employee_id}.",
                        verb_es=f"Solicitud de asignación de licencia actualizada para {leave_allocation_request.employee_id}.",
                        verb_fr=f"Demande d'allocation de congé mise à jour pour {leave_allocation_request.employee_id}.",
                        icon="people-cicle",
                        redirect=reverse("leave-allocation-request-view")
                        + f"?id={leave_allocation_request.id}",
                    )
                response = render(
                    request,
                    "leave/leave_allocation_request/leave_allocation_request_update.html",
                    {"form": form, "req_id": req_id},
                )
                return HttpResponse(
                    response.content.decode("utf-8")
                    + "<script>location. reload();</script>"
                )
        return render(
            request,
            "leave/leave_allocation_request/leave_allocation_request_update.html",
            {"form": form, "req_id": req_id},
        )
    else:
        messages.error(request, _("You can't update this request..."))
        return HttpResponse("<script>window.location.reload();</script>")


@login_required
@leave_allocation_reject_permission()
def leave_allocation_request_approve(request, req_id):
    """
    function used to approve a leave allocation request.

    Parameters:
    request (HttpRequest): The HTTP request object.
    req_id : leave allocation request id

    Returns:
    GET :It returns to the default leave allocation request view template.
    """
    leave_allocation_request = LeaveAllocationRequest.objects.get(id=req_id)
    if leave_allocation_request.status == "requested":
        employee = leave_allocation_request.employee_id
        if (
            employee.available_leave.all()
            .filter(leave_type_id=leave_allocation_request.leave_type_id)
            .exists()
        ):
            available_leave = (
                employee.available_leave.all()
                .filter(leave_type_id=leave_allocation_request.leave_type_id)
                .first()
            )
        else:
            available_leave = AvailableLeave(
                leave_type_id=leave_allocation_request.leave_type_id,
                employee_id=employee,
            )
        available_leave.available_days += leave_allocation_request.requested_days
        available_leave.save()
        leave_allocation_request.status = "approved"
        leave_allocation_request.save()
        messages.success(request, _("Leave allocation request approved successfully"))
        with contextlib.suppress(Exception):
            notify.send(
                request.user.employee_get,
                recipient=leave_allocation_request.employee_id.employee_user_id,
                verb="Your leave allocation request has been approved",
                verb_ar="تمت الموافقة على طلب تخصيص إجازتك",
                verb_de="Ihr Antrag auf Urlaubszuweisung wurde genehmigt",
                verb_es="Se ha aprobado su solicitud de asignación de vacaciones",
                verb_fr="Votre demande d'allocation de congé a été approuvée",
                icon="people-circle",
                redirect=reverse("leave-allocation-request-view")
                + f"?id={leave_allocation_request.id}",
            )
    else:
        messages.error(request, _("The leave allocation request can't be approved"))
    return HttpResponseRedirect(request.META.get("HTTP_REFERER", "/"))


@login_required
@hx_request_required
@leave_allocation_reject_permission()
def leave_allocation_request_reject(request, req_id):
    """
    function used to Reject leave allocation request.

    Parameters:
    request (HttpRequest): The HTTP request object.
    id : leave allocation request id

    Returns:
    GET : It returns to the default leave allocation request view template.

    """
    leave_allocation_request = LeaveAllocationRequest.objects.get(id=req_id)
    if (
        leave_allocation_request.status == "requested"
        or leave_allocation_request.status == "approved"
    ):
        form = LeaveAllocationRequestRejectForm()
        if request.method == "POST":
            form = LeaveAllocationRequestRejectForm(request.POST)
            if form.is_valid():
                leave_allocation_request.reject_reason = form.cleaned_data["reason"]
                if leave_allocation_request.status == "approved":
                    leave_type = leave_allocation_request.leave_type_id
                    requested_days = leave_allocation_request.requested_days
                    available_leave = AvailableLeave.objects.filter(
                        leave_type_id=leave_type,
                        employee_id=leave_allocation_request.employee_id,
                    ).first()
                    available_leave.available_days = max(
                        0, available_leave.available_days - requested_days
                    )

                    available_leave.save()
                leave_allocation_request.status = "rejected"
                leave_allocation_request.save()
                messages.success(
                    request, _("Leave allocation request rejected successfully")
                )
                with contextlib.suppress(Exception):
                    notify.send(
                        request.user.employee_get,
                        recipient=leave_allocation_request.employee_id.employee_user_id,
                        verb="Your leave allocation request has been rejected",
                        verb_ar="تم رفض طلب تخصيص إجازتك",
                        verb_de="Ihr Antrag auf Urlaubszuweisung wurde abgelehnt",
                        verb_es="Se ha rechazado su solicitud de asignación de vacaciones",
                        verb_fr="Votre demande d'allocation de congé a été rejetée",
                        icon="people-circle",
                        redirect=reverse("leave-allocation-request-view")
                        + f"?id={leave_allocation_request.id}",
                    )
                return HttpResponse("<script>location.reload();</script>")
        return render(
            request,
            "leave/leave_allocation_request/leave_allocation_request_reject_form.html",
            {"form": form, "req_id": req_id},
        )
    else:
        messages.error(request, _("The leave allocation request can't be rejected"))
        return HttpResponse("<script>location.reload();</script>")


@login_required
@hx_request_required
@leave_allocation_delete_permission()
def leave_allocation_request_delete(request, req_id):
    """
    function used to delete leave allocation request.

    Parameters:
    request (HttpRequest): The HTTP request object.
    id : leave allocation request id

    Returns:
    GET : return leave allocation request view template
    """

    try:
        leave_allocation_request = LeaveAllocationRequest.objects.get(id=req_id)

        if leave_allocation_request.status != "approved":
            leave_allocation_request.delete()
            messages.success(
                request, _("Leave allocation request deleted successfully..")
            )
        else:
            messages.error(request, _("Approved request can't be deleted."))
    except LeaveAllocationRequest.DoesNotExist:
        messages.error(request, _("Leave allocation request not found."))
    except OverflowError:
        messages.error(request, _("Leave allocation request not found."))

    except ProtectedError:
        messages.error(request, _("Related entries exist"))
    hx_target = request.META.get("HTTP_HX_TARGET")
    previous_data = request.GET.urlencode()
    if hx_target and hx_target == "view-container":
        leave_allocations = LeaveAllocationRequest.objects.all()
        if leave_allocations.exists():
            return redirect(f"/leave/leave-allocation-request-filter?{previous_data}")
        else:
            return HttpResponse("<script>location.reload();</script>")
    elif hx_target and hx_target == "objectDetailsModalW25Target":
        instances_ids = request.GET.get("instances_ids")
        instances_list = json.loads(instances_ids)
        if req_id in instances_list:
            instances_list.remove(req_id)
        previous_instance, next_instance = closest_numbers(
            json.loads(instances_ids), req_id
        )
        return redirect(
            f"/leave/leave-allocation-request-single-view/{next_instance}?{previous_data}"
        )

    return redirect(leave_allocation_request_view)


@login_required
def assigned_leave_select(request):
    page_number = request.GET.get("page")

    if page_number == "all":
        if request.user.has_perm("leave.view_availableleave"):
            employees = AvailableLeave.objects.all()
        else:
            employees = AvailableLeave.objects.filter(
                employee_id__employee_work_info__reporting_manager_id__employee_user_id=request.user
            )

    employee_ids = [str(emp.id) for emp in employees]
    total_count = employees.count()

    context = {"employee_ids": employee_ids, "total_count": total_count}

    return JsonResponse(context, safe=False)


@login_required
def assigned_leave_select_filter(request):
    page_number = request.GET.get("page")
    filtered = request.GET.get("filter")
    filters = json.loads(filtered) if filtered else {}

    if page_number == "all":
        if request.user.has_perm("leave.view_availableleave"):
            employee_filter = AssignedLeaveFilter(
                filters, queryset=AvailableLeave.objects.all()
            )
        else:
            employee_filter = AssignedLeaveFilter(
                filters,
                queryset=AvailableLeave.objects.filter(
                    employee_id__employee_work_info__reporting_manager_id__employee_user_id=request.user
                ),
            )

        # Get the filtered queryset
        filtered_employees = employee_filter.qs

        employee_ids = [str(emp.id) for emp in filtered_employees]
        total_count = filtered_employees.count()

        context = {"employee_ids": employee_ids, "total_count": total_count}

        return JsonResponse(context)


@login_required
@require_http_methods(["POST"])
@manager_can_enter("leave.delete_leaverequest")
def leave_request_bulk_delete(request):
    """
    This method is used to delete a bulk of leave requests.
    """
    ids = request.POST["ids"]
    ids = json.loads(ids)
    count = 0  # To track the number of successfully deleted requests
    for leave_request_id in ids:
        try:
            leave_request = LeaveRequest.objects.get(id=leave_request_id)
            employee = leave_request.employee_id
            if leave_request.status == "requested":
                leave_request.delete()
                count += 1
            else:
                messages.error(
                    request,
                    _("{}'s leave request cannot be deleted.".format(employee)),
                )
        except Exception as e:
            messages.error(request, _("An error occurred: {}.".format(str(e))))

    if count > 0:
        messages.success(
            request,
            _("{count}  leave request(s) successfully deleted.".format(count=count)),
        )

    return JsonResponse({"message": "Success"})


@login_required
def leave_request_select(request):
    page_number = request.GET.get("page")

    if page_number == "all":
        if request.user.has_perm("leave.view_leaverequest"):
            employees = LeaveRequest.objects.all()
        else:
            employees = LeaveRequest.objects.filter(
                employee_id__employee_work_info__reporting_manager_id__employee_user_id=request.user
            )

    employee_ids = [str(emp.id) for emp in employees]
    total_count = employees.count()

    context = {"employee_ids": employee_ids, "total_count": total_count}

    return JsonResponse(context, safe=False)


@login_required
def leave_request_select_filter(request):
    page_number = request.GET.get("page")
    filtered = request.GET.get("filter")
    filters = json.loads(filtered) if filtered else {}

    if page_number == "all":
        if request.user.has_perm("leave.view_leaverequest"):
            employee_filter = LeaveRequestFilter(
                filters, queryset=LeaveRequest.objects.all()
            )
        else:
            employee_filter = LeaveRequestFilter(
                filters,
                queryset=LeaveRequest.objects.filter(
                    employee_id__employee_work_info__reporting_manager_id__employee_user_id=request.user
                ),
            )

        # Get the filtered queryset
        filtered_employees = employee_filter.qs

        employee_ids = [str(emp.id) for emp in filtered_employees]
        total_count = filtered_employees.count()

        context = {"employee_ids": employee_ids, "total_count": total_count}

        return JsonResponse(context)


@require_http_methods(["POST"])
@login_required
def user_request_bulk_delete(request):
    """
    This method is used to delete bulk of leaves requests
    """
    ids = request.POST["ids"]
    ids = json.loads(ids)
    for leave_request_id in ids:
        try:
            leave_request = LeaveRequest.objects.get(id=leave_request_id)
            status = leave_request.status
            if leave_request.status == "requested":
                leave_request.delete()
                messages.success(
                    request,
                    _("Leave request deleted."),
                )
            else:
                messages.error(
                    request,
                    _("You cannot delete leave request with status {}.".format(status)),
                )
        except Exception as e:
            messages.error(request, _("Leave request not found."))
    return JsonResponse({"message": "Success"})


@login_required
def user_request_select(request):
    page_number = request.GET.get("page")
    user = request.user.employee_get

    if page_number == "all":
        employees = LeaveRequest.objects.filter(employee_id=user)

    employee_ids = [str(emp.id) for emp in employees]
    total_count = employees.count()

    context = {"employee_ids": employee_ids, "total_count": total_count}

    return JsonResponse(context, safe=False)


@login_required
def user_request_select_filter(request):
    page_number = request.GET.get("page")
    filtered = request.GET.get("filter")
    filters = json.loads(filtered) if filtered else {}
    user = request.user.employee_get

    if page_number == "all":
        employee_filter = UserLeaveRequestFilter(
            filters, queryset=LeaveRequest.objects.filter(employee_id=user)
        )

        # Get the filtered queryset
        filtered_employees = employee_filter.qs

        employee_ids = [str(emp.id) for emp in filtered_employees]
        total_count = filtered_employees.count()

        context = {"employee_ids": employee_ids, "total_count": total_count}

        return JsonResponse(context)


@login_required
@hx_request_required
def employee_available_leave_count(request):
    leave_type_id = request.GET.get("leave_type_id")
    start_date = request.GET.get("start_date")
    try:
        start_date_format = datetime.strptime(start_date, "%Y-%m-%d").date()
    except:
        leave_type_id = None
    hx_target = request.META.get("HTTP_HX_TARGET", None)
    employee_id = (
        request.GET.getlist("employee_id")[0]
        if request.GET.getlist("employee_id")
        else None
    )
    available_leave = (
        AvailableLeave.objects.filter(
            leave_type_id=leave_type_id, employee_id=employee_id
        ).first()
        if leave_type_id and employee_id
        else None
    )
    total_leave_days = available_leave.total_leave_days if available_leave else 0
    forcated_days = 0

    if (
        available_leave
        and available_leave.leave_type_id.leave_type_next_reset_date()
        and available_leave
        and start_date_format
        >= available_leave.leave_type_id.leave_type_next_reset_date()
    ):
        forcated_days = available_leave.forcasted_leaves(start_date)
        total_leave_days = (
            available_leave.leave_type_id.carryforward_max
            if available_leave.leave_type_id.carryforward_type
            in ["carryforward", "carryforward expire"]
            and available_leave.leave_type_id.carryforward_max < total_leave_days
            else total_leave_days
        )
        if available_leave.leave_type_id.carryforward_type == "no carryforward":
            total_leave_days = 0
        total_leave_days += forcated_days

    context = {
        "hx_target": hx_target,
        "leave_type_id": leave_type_id,
        "available_leave": available_leave,
        "total_leave_days": total_leave_days,
        "forcated_days": forcated_days,
    }
    return render(
        request, "leave/leave_request/employee_available_leave_count.html", context
    )


@login_required
@hx_request_required
@manager_can_enter("base.add_penaltyaccounts")
def cut_available_leave(request, instance_id):
    """
    This method is used to create the penalties
    """
    previous_data = request.GET.urlencode()
    instance = LeaveRequest.objects.get(id=instance_id)
    form = PenaltyAccountForm(employee=instance.employee_id)
    available = AvailableLeave.objects.filter(employee_id=instance.employee_id)
    if request.method == "POST":
        form = PenaltyAccountForm(request.POST)
        if form.is_valid():
            penalty_instance = form.instance
            penalty = PenaltyAccounts()
            penalty.leave_request_id = instance
            penalty.deduct_from_carry_forward = (
                penalty_instance.deduct_from_carry_forward
            )
            penalty.employee_id = instance.employee_id
            penalty.leave_type_id = penalty_instance.leave_type_id
            penalty.minus_leaves = penalty_instance.minus_leaves
            penalty.penalty_amount = penalty_instance.penalty_amount
            penalty.save()
            form = PenaltyAccountForm()
            messages.success(request, "Penalty/Fine added")
    return render(
        request,
        "leave/leave_request/penalty/form.html",
        {
            "available": available,
            "form": form,
            "instance": instance,
            "pd": previous_data,
        },
    )


@login_required
@hx_request_required
def create_leaverequest_comment(request, leave_id):
    """
    This method renders form and template to create Leave request comments
    """
    leave = LeaveRequest.objects.filter(id=leave_id).first()
    emp = request.user.employee_get
    form = LeaverequestcommentForm(
        initial={"employee_id": emp.id, "request_id": leave_id}
    )
    target = request.GET.get("target")
    url = "request-filter" if target == "leaveRequest" else "user-request-filter"
    previous_data = request.GET.urlencode()
    if request.method == "POST":
        form = LeaverequestcommentForm(request.POST)
        if form.is_valid():
            form.instance.employee_id = emp
            form.instance.request_id = leave
            form.save()
            comments = LeaverequestComment.objects.filter(request_id=leave_id).order_by(
                "-created_at"
            )
            no_comments = False
            if not comments.exists():
                no_comments = True
            form = LeaverequestcommentForm(
                initial={"employee_id": emp.id, "request_id": leave_id}
            )
            messages.success(request, _("Comment added successfully!"))
            work_info = EmployeeWorkInformation.objects.filter(
                employee_id=leave.employee_id
            )
            if work_info.exists():
                if (
                    leave.employee_id.employee_work_info.reporting_manager_id
                    is not None
                ):
                    if request.user.employee_get.id == leave.employee_id.id:
                        rec = (
                            leave.employee_id.employee_work_info.reporting_manager_id.employee_user_id
                        )
                        notify.send(
                            request.user.employee_get,
                            recipient=rec,
                            verb=f"{leave.employee_id}'s leave request has received a comment.",
                            verb_ar=f"تلقت طلب إجازة {leave.employee_id} تعليقًا.",
                            verb_de=f"{leave.employee_id}s Urlaubsantrag hat einen Kommentar erhalten.",
                            verb_es=f"La solicitud de permiso de {leave.employee_id} ha recibido un comentario.",
                            verb_fr=f"La demande de congé de {leave.employee_id} a reçu un commentaire.",
                            redirect=reverse("request-view") + f"?id={leave.id}",
                            icon="chatbox-ellipses",
                        )
                    elif (
                        request.user.employee_get.id
                        == leave.employee_id.employee_work_info.reporting_manager_id.id
                    ):
                        rec = leave.employee_id.employee_user_id
                        notify.send(
                            request.user.employee_get,
                            recipient=rec,
                            verb="Your leave request has received a comment.",
                            verb_ar="تلقى طلب إجازتك تعليقًا.",
                            verb_de="Ihr Urlaubsantrag hat einen Kommentar erhalten.",
                            verb_es="Tu solicitud de permiso ha recibido un comentario.",
                            verb_fr="Votre demande de congé a reçu un commentaire.",
                            redirect=reverse("user-request-view") + f"?id={leave.id}",
                            icon="chatbox-ellipses",
                        )
                    else:
                        rec = [
                            leave.employee_id.employee_user_id,
                            leave.employee_id.employee_work_info.reporting_manager_id.employee_user_id,
                        ]
                        notify.send(
                            request.user.employee_get,
                            recipient=rec,
                            verb=f"{leave.employee_id}'s leave request has received a comment.",
                            verb_ar=f"تلقت طلب إجازة {leave.employee_id} تعليقًا.",
                            verb_de=f"{leave.employee_id}s Urlaubsantrag hat einen Kommentar erhalten.",
                            verb_es=f"La solicitud de permiso de {leave.employee_id} ha recibido un comentario.",
                            verb_fr=f"La demande de congé de {leave.employee_id} a reçu un commentaire.",
                            redirect=reverse("request-view") + f"?id={leave.id}",
                            icon="chatbox-ellipses",
                        )
                else:
                    rec = leave.employee_id.employee_user_id
                    notify.send(
                        request.user.employee_get,
                        recipient=rec,
                        verb="Your leave request has received a comment.",
                        verb_ar="تلقى طلب إجازتك تعليقًا.",
                        verb_de="Ihr Urlaubsantrag hat einen Kommentar erhalten.",
                        verb_es="Tu solicitud de permiso ha recibido un comentario.",
                        verb_fr="Votre demande de congé a reçu un commentaire.",
                        redirect=reverse("user-request-view") + f"?id={leave.id}",
                        icon="chatbox-ellipses",
                    )
            return render(
                request,
                "leave/leave_request/leave_comment.html",
                {
                    "comments": comments,
                    "no_comments": no_comments,
                    "request_id": leave_id,
                    "leave_request": leave,
                },
            )
    return render(
        request,
        "leave/leave_request/leave_comment.html",
        {
            "form": form,
            "request_id": leave_id,
            "pd": previous_data,
            "target": target,
            "url": url,
            "leave_request": leave,
        },
    )


@login_required
@hx_request_required
def view_leaverequest_comment(request, leave_id):
    """
    This method is used to show Leave request comments
    """
    leave_request = LeaveRequest.find(leave_id)
    if not (
        request.user.employee_get == leave_request.employee_id
        or request.user.has_perm("leave.view_leaverequestcomment")
        or is_reportingmanager(request)
    ):
        messages.warning(request, _("You don't have permission"))
        return render(request, "decorator_404.html")

    comments = LeaverequestComment.objects.filter(request_id=leave_id).order_by(
        "-created_at"
    )
    no_comments = False
    if not comments.exists():
        no_comments = True

    if request.FILES:
        files = request.FILES.getlist("files")
        comment_id = request.GET["comment_id"]
        comment = LeaverequestComment.objects.get(id=comment_id)
        attachments = []
        for file in files:
            file_instance = LeaverequestFile()
            file_instance.file = file
            file_instance.save()
            attachments.append(file_instance)
        comment.files.add(*attachments)

    return render(
        request,
        "leave/leave_request/leave_comment.html",
        {
            "comments": comments,
            "no_comments": no_comments,
            "leave_request": leave_request,
        },
    )


@login_required
@hx_request_required
def create_allocationrequest_comment(request, leave_id):
    """
    This method renders form and template to create Allocation request comments
    """
    previous_data = request.GET.urlencode()
    leave = LeaveAllocationRequest.objects.filter(id=leave_id).first()
    emp = request.user.employee_get
    form = LeaveallocationrequestcommentForm(
        initial={"employee_id": emp.id, "request_id": leave_id}
    )

    if request.method == "POST":
        form = LeaveallocationrequestcommentForm(request.POST)
        if form.is_valid():
            form.instance.employee_id = emp
            form.instance.request_id = leave
            form.save()
            comments = LeaveallocationrequestComment.objects.filter(
                request_id=leave_id
            ).order_by("-created_at")
            no_comments = False
            if not comments.exists():
                no_comments = True
            form = LeaveallocationrequestcommentForm(
                initial={"employee_id": emp.id, "request_id": leave_id}
            )
            messages.success(request, _("Comment added successfully!"))
            work_info = EmployeeWorkInformation.objects.filter(
                employee_id=leave.employee_id
            )
            if work_info.exists():
                if (
                    leave.employee_id.employee_work_info.reporting_manager_id
                    is not None
                ):
                    if request.user.employee_get.id == leave.employee_id.id:
                        rec = (
                            leave.employee_id.employee_work_info.reporting_manager_id.employee_user_id
                        )
                        notify.send(
                            request.user.employee_get,
                            recipient=rec,
                            verb=f"{leave.employee_id}'s leave allocation request has received a comment.",
                            verb_ar=f"تلقت طلب تخصيص الإجازة لـ {leave.employee_id} تعليقًا.",
                            verb_de=f"{leave.employee_id}s Anfrage zur Urlaubszuweisung hat einen Kommentar erhalten.",
                            verb_es=f"La solicitud de asignación de permisos de {leave.employee_id} ha recibido un comentario.",
                            verb_fr=f"La demande d'allocation de congé de {leave.employee_id} a reçu un commentaire.",
                            redirect=reverse("leave-allocation-request-view")
                            + f"?id={leave.id}",
                            icon="chatbox-ellipses",
                        )
                    elif (
                        request.user.employee_get.id
                        == leave.employee_id.employee_work_info.reporting_manager_id.id
                    ):
                        rec = leave.employee_id.employee_user_id
                        notify.send(
                            request.user.employee_get,
                            recipient=rec,
                            verb="Your leave allocation request has received a comment.",
                            verb_ar="تلقى طلب تخصيص الإجازة الخاص بك تعليقًا.",
                            verb_de="Ihr Antrag auf Urlaubszuweisung hat einen Kommentar erhalten.",
                            verb_es="Tu solicitud de asignación de permisos ha recibido un comentario.",
                            verb_fr="Votre demande d'allocation de congé a reçu un commentaire.",
                            redirect=reverse("leave-allocation-request-view")
                            + f"?id={leave.id}",
                            icon="chatbox-ellipses",
                        )
                    else:
                        rec = [
                            leave.employee_id.employee_user_id,
                            leave.employee_id.employee_work_info.reporting_manager_id.employee_user_id,
                        ]
                        notify.send(
                            request.user.employee_get,
                            recipient=rec,
                            verb=f"{leave.employee_id}'s leave allocation request has received a comment.",
                            verb_ar=f"تلقت طلب تخصيص الإجازة لـ {leave.employee_id} تعليقًا.",
                            verb_de=f"{leave.employee_id}s Anfrage zur Urlaubszuweisung hat einen Kommentar erhalten.",
                            verb_es=f"La solicitud de asignación de permisos de {leave.employee_id} ha recibido un comentario.",
                            verb_fr=f"La demande d'allocation de congé de {leave.employee_id} a reçu un commentaire.",
                            redirect=reverse("leave-allocation-request-view")
                            + f"?id={leave.id}",
                            icon="chatbox-ellipses",
                        )
                else:
                    rec = leave.employee_id.employee_user_id
                    notify.send(
                        request.user.employee_get,
                        recipient=rec,
                        verb="Your leave allocation request has received a comment.",
                        verb_ar="تلقى طلب تخصيص الإجازة الخاص بك تعليقًا.",
                        verb_de="Ihr Antrag auf Urlaubszuweisung hat einen Kommentar erhalten.",
                        verb_es="Tu solicitud de asignación de permisos ha recibido un comentario.",
                        verb_fr="Votre demande d'allocation de congé a reçu un commentaire.",
                        redirect=reverse("leave-allocation-request-view")
                        + f"?id={leave.id}",
                        icon="chatbox-ellipses",
                    )
            return render(
                request,
                "leave/leave_allocation_request/leave_allocation_comment.html",
                {
                    "comments": comments,
                    "no_comments": no_comments,
                    "request_id": leave_id,
                },
            )
    return render(
        request,
        "leave/leave_allocation_request/leave_allocation_comment.html",
        {"form": form, "request_id": leave_id, "pd": previous_data},
    )


@login_required
@hx_request_required
def view_allocationrequest_comment(request, leave_id):
    """
    This method is used to show Allocation request comments
    """
    leave_alloc_request = LeaveAllocationRequest.find(leave_id)
    if not (
        request.user.employee_get == leave_alloc_request.employee_id
        or request.user.has_perm("leave.view_leaveallocationrequestcomment")
        or is_reportingmanager(request)
    ):
        messages.warning(request, _("You don't have permission"))
        return render(request, "decorator_404.html")
    comments = LeaveallocationrequestComment.objects.filter(
        request_id=leave_id
    ).order_by("-created_at")
    no_comments = False
    if not comments.exists():
        no_comments = True

    if request.FILES:
        files = request.FILES.getlist("files")
        comment_id = request.GET["comment_id"]
        comment = LeaveallocationrequestComment.objects.get(id=comment_id)
        attachments = []
        for file in files:
            file_instance = LeaverequestFile()
            file_instance.file = file
            file_instance.save()
            attachments.append(file_instance)
        comment.files.add(*attachments)

    return render(
        request,
        "leave/leave_allocation_request/leave_allocation_comment.html",
        {
            "comments": comments,
            "no_comments": no_comments,
            "request_id": leave_id,
            "leave_alloc_request": leave_alloc_request,
        },
    )


@login_required
@hx_request_required
def delete_allocationrequest_comment(request, comment_id):
    """
    This method is used to delete Allocation request comments
    """
    script = ""
    comment = LeaveallocationrequestComment.find(comment_id)
    request_id = comment.request_id.id
    if (
        request.user.employee_get == comment.employee_id
        or request.user.has_perm("leave.delete_leaveallocationrequestcomment")
        or is_reportingmanager(request)
    ):
        comment.delete()
        messages.success(request, _("Comment deleted successfully!"))
    else:
        script = f"""
                    <span hx-get="/leave/allocation-request-view-comment/{request_id}/" hx-target="#commentContainer" hx-trigger="load"></span>
                """
        messages.warning(request, _("You don't have permission"))
    return HttpResponse(script)


@login_required
def delete_allocation_comment_file(request):
    """
    Used to delete attachment
    """
    script = ""
    ids = request.GET.getlist("ids")
    leave_id = request.GET["leave_id"]
    comment_id = request.GET["comment_id"]
    comment = LeaveallocationrequestComment.find(comment_id)
    if (
        request.user.employee_get == comment.employee_id
        or request.user.has_perm("leave.delete_leaverequestfile")
        or is_reportingmanager(request)
    ):
        LeaverequestFile.objects.filter(id__in=ids).delete()
        messages.success(request, _("File deleted successfully"))
    else:
        messages.warning(request, _("You don't have permission"))
        script = f"""
                <span hx-get='/leave/allocation-request-view-comment/{leave_id}/' hx-target='#commentContainer' hx-trigger='load'></span>
                """
    return HttpResponse(script)


@login_required
@hx_request_required
def view_clashes(request, leave_request_id):
    """
    This method is used to filter or view the leave clashes
    """
    record = get_object_or_404(LeaveRequest, id=leave_request_id)

    if record.status == "rejected" or record.status == "cancelled":
        overlapping_requests = LeaveRequest.objects.none()
        clashed_due_to_department = LeaveRequest.objects.none()
        clashed_due_to_job_position = LeaveRequest.objects.none()
    else:
        overlapping_requests = (
            LeaveRequest.objects.filter(
                (
                    Q(
                        employee_id__employee_work_info__department_id=record.employee_id.employee_work_info.department_id
                    )
                    | Q(
                        employee_id__employee_work_info__job_position_id=record.employee_id.employee_work_info.job_position_id
                    )
                )
                & Q(
                    employee_id__employee_work_info__company_id=record.employee_id.employee_work_info.company_id
                ),
                start_date__lte=record.end_date,
                end_date__gte=record.start_date,
            )
            .exclude(id=leave_request_id)
            .exclude(Q(status="cancelled") | Q(status="rejected"))
        )

        clashed_due_to_department = overlapping_requests.filter(
            employee_id__employee_work_info__department_id=record.employee_id.employee_work_info.department_id
        )

        clashed_due_to_job_position = overlapping_requests.filter(
            employee_id__employee_work_info__job_position_id=record.employee_id.employee_work_info.job_position_id
        )

    leave_request_filter = LeaveRequestFilter(request.GET, overlapping_requests).qs
    leave_request_filter = paginator_qry(leave_request_filter, request.GET.get("page"))

    requests_ids = json.dumps(
        [instance.id for instance in leave_request_filter.object_list]
    )

    return render(
        request,
        "leave/leave_request/leave_clashes.html",
        {
            "leave_request": record,
            "records": overlapping_requests,
            "current_date": date.today(),
            "requests_ids": requests_ids,
            "clashed_due_to_department": clashed_due_to_department,
            "clashed_due_to_job_position": clashed_due_to_job_position,
        },
    )


@login_required
@permission_required("leave.view_leavegeneralsetting")
def compensatory_leave_settings_view(request):
    enabled_compensatory = (
        LeaveGeneralSetting.objects.exists()
        and LeaveGeneralSetting.objects.first().compensatory_leave
    )
    leave_type, create = LeaveType.objects.get_or_create(
        is_compensatory_leave=True,
        defaults={"name": "Compensatory Leave Type", "payment": "paid"},
    )
    context = {"enabled_compensatory": enabled_compensatory, "leave_type": leave_type}
    return render(request, "compensatory_settings.html", context)


@login_required
@permission_required("leave.add_leavegeneralsetting")
def enable_compensatory_leave(request):
    """
    This method is used to enable/disable the compensatory leave feature
    """
    compensatory_leave = LeaveGeneralSetting.objects.first()
    compensatory_leave = (
        compensatory_leave if compensatory_leave else LeaveGeneralSetting()
    )
    compensatory_leave.compensatory_leave = "compensatory_leave" in request.GET.keys()
    compensatory_leave.save()
    if "compensatory_leave" in request.GET.keys():
        messages.success(request, _("Compensatory leave is enabled successfully!"))
    else:
        messages.success(request, _("Compensatory leave is disabled successfully!"))
    return HttpResponse("")


@login_required
@hx_request_required
def delete_leaverequest_comment(request, comment_id):
    """
    This method is used to delete Leave request comments
    """
    script = ""
    comment = LeaverequestComment.find(comment_id)
    if (
        request.user.employee_get == comment.employee_id
        or request.user.has_perm("leave.delete_leaverequestcomment")
        or is_reportingmanager(request)
    ):
        comment.delete()
        messages.success(request, _("Comment deleted successfully!"))
    else:
        messages.warning(request, _("You don't have permission"))
        script = f"""
            <span hx-get="/leave/leave-request-view-comment/{comment.request_id.id}/?&amp;target=leaveRequest" hx-target="#commentContainer" hx-trigger="load"></span>
        """
    return HttpResponse(script)


@login_required
def delete_leave_comment_file(request):
    """
    Used to delete attachment
    """
    script = ""
    ids = request.GET.getlist("ids")
    leave_id = request.GET["leave_id"]
    comment_id = request.GET["comment_id"]
    comment = LeaverequestComment.find(comment_id)
    if (
        request.user.employee_get == comment.employee_id
        or request.user.has_perm("leave.delete_leaverequestfile")
        or is_reportingmanager(request)
    ):
        LeaverequestFile.objects.filter(id__in=ids).delete()
        messages.success(request, _("File deleted successfully"))
    else:
        messages.warning(request, _("You don't have permission"))
        script = f"""
            <span hx-get="/leave/leave-request-view-comment/{leave_id}/?&amp;target=leaveRequest" hx-target="#commentContainer" hx-trigger="load"></span>
        """
    return HttpResponse(script)


if apps.is_installed("attendance"):
    from leave.models import CompensatoryLeaveRequest, CompensatoryLeaverequestComment

    @login_required
    def get_leave_attendance_dates(request):
        """
        function used to return attendance dates that taken on leave days .

        Parameters:
        request (HttpRequest): The HTTP request object.

        Returns:
        GET : return attendance dates
        """
        if request.GET.get("employee_id"):
            employee = Employee.objects.get(id=request.GET.get("employee_id"))
            holiday_attendance = get_leave_day_attendance(employee)
            # Get a list of tuples containing (id, attendance_date)
            attendance_dates = list(
                holiday_attendance.values_list("id", "attendance_date")
            )
            form = CompensatoryLeaveForm()
            form.fields["attendance_id"].choices = attendance_dates
            attendance_id = render_to_string(
                "leave/compensatory_leave/attendance_id.html",
                {
                    "form": form,
                },
            )
            return HttpResponse(f"{attendance_id}")

    @login_required
    def delete_comment_compensatory_file(request):
        """
        Used to delete attachment
        """
        ids = request.GET.getlist("ids")
        LeaverequestFile.objects.filter(id__in=ids).delete()
        leave_id = request.GET["leave_id"]
        comments = CompensatoryLeaverequestComment.objects.all()
        if not request.user.has_perm("leave.delete_compensatoryleaverequestcomment"):
            comments = comments.filter(employee_id__employee_user_id=request.user)
        if request.GET.get("compensatory"):
            comments = comments.filter(request_id=leave_id).order_by("-created_at")
            template = "leave/compensatory_leave/compensatory_leave_comment.html"
        else:
            comments = comments.filter(request_id=leave_id).order_by("-created_at")
            template = "leave/leave_request/leave_comment.html"
        return render(
            request,
            template,
            {
                "comments": comments,
                "request_id": leave_id,
            },
        )

    @login_required
    @hx_request_required
    def delete_leaverequest_compensatory_comment(request, comment_id):
        """
        This method is used to delete Leave request comments
        """
        if request.GET.get("compensatory"):
            comment = CompensatoryLeaverequestComment.objects.filter(id=comment_id)
            if not request.user.has_perm(
                "leave.delete_compensatoryleaverequestcomment"
            ):
                comment = comment.filter(employee_id__employee_user_id=request.user)
            redirect_url = "view-compensatory-leave-comment"
        else:
            comment = LeaverequestComment.objects.filter(id=comment_id)
            if not request.user.has_perm("leave.delete_leaverequestcomment"):
                comment = comment.filter(employee_id__employee_user_id=request.user)
            redirect_url = "leave-request-view-comment"
        leave_id = comment.first().request_id.id
        comment.delete()
        messages.success(request, _("Comment deleted successfully!"))
        return redirect(redirect_url, leave_id)

    @login_required
    @is_compensatory_leave_enabled()
    def view_compensatory_leave(request):
        """
        function used to view compensatory leave requests.

        Parameters:
        request (HttpRequest): The HTTP request object.

        Returns:
        GET : return compensetory leave request view template
        """
        employee = request.user.employee_get
        queryset = CompensatoryLeaveRequest.objects.all().order_by("-id")
        queryset = CompensatoryLeaveRequestFilter(request.GET, queryset).qs
        queryset = filtersubordinates(
            request, queryset, "leave.view_compensatoryleaverequest"
        )
        page_number = request.GET.get("page")
        comp_leave_requests = paginator_qry(queryset, page_number)
        requests_ids = json.dumps(
            list(comp_leave_requests.object_list.values_list("id", flat=True))
        )
        my_comp_leave_requests = CompensatoryLeaveRequest.objects.filter(
            employee_id=employee.id
        ).order_by("-id")
        my_comp_leave_requests = CompensatoryLeaveRequestFilter(
            request.GET, my_comp_leave_requests
        ).qs
        my_page_number = request.GET.get("m_page")
        my_comp_leave_requests = paginator_qry(my_comp_leave_requests, my_page_number)
        my_requests_ids = json.dumps(
            list(my_comp_leave_requests.object_list.values_list("id", flat=True))
        )
        comp_leave_requests_filter = CompensatoryLeaveRequestFilter()
        previous_data = request.GET.urlencode()
        data_dict = parse_qs(previous_data)
        data_dict = get_key_instances(CompensatoryLeaveRequest, data_dict)
        context = {
            "my_comp_leave_requests": my_comp_leave_requests,
            "comp_leave_requests": comp_leave_requests,
            "pd": previous_data,
            "form": comp_leave_requests_filter.form,
            "filter_dict": data_dict,
            "gp_fields": LeaveAllocationRequestReGroup.fields,
            "requests_ids": requests_ids,
            "my_requests_ids": my_requests_ids,
        }
        return render(
            request, "leave/compensatory_leave/compensatory_leave_view.html", context
        )

    @login_required
    @is_compensatory_leave_enabled()
    @hx_request_required
    def filter_compensatory_leave(request):
        """
        function used to view compensatory leave requests.
        """
        field = request.GET.get("field")
        employee = request.user.employee_get
        page_number = request.GET.get("page")
        my_page_number = request.GET.get("m_page")
        previous_data = request.GET.urlencode()
        template = "leave/compensatory_leave/compensatory_leave_req_list.html"

        # Filter compensatory leave requests
        comp_leave_requests_filtered = CompensatoryLeaveRequestFilter(
            request.GET
        ).qs.order_by("-id")
        my_comp_leave_requests_filtered = CompensatoryLeaveRequest.objects.filter(
            employee_id=employee.id
        ).order_by("-id")
        my_comp_leave_requests_filtered = CompensatoryLeaveRequestFilter(
            request.GET, my_comp_leave_requests_filtered
        ).qs
        comp_leave_requests_filtered = filtersubordinates(
            request, comp_leave_requests_filtered, "leave.view_leaveallocationrequest"
        )

        # Sort compensatory leave requests if requested
        if request.GET.get("sortby"):
            comp_leave_requests_filtered = sortby(
                request, comp_leave_requests_filtered, "sortby"
            )
            my_comp_leave_requests_filtered = sortby(
                request, my_comp_leave_requests_filtered, "sortby"
            )

        # Group compensatory leave requests if field parameter is provided
        if field:
            comp_leave_requests = group_by_queryset(
                comp_leave_requests_filtered, field, page_number, "page"
            )
            my_comp_leave_requests = group_by_queryset(
                my_comp_leave_requests_filtered, field, my_page_number, "m_page"
            )

            # Convert IDs to JSON format for details view
            list_values = [entry["list"] for entry in comp_leave_requests]
            id_list = [
                instance.id for value in list_values for instance in value.object_list
            ]
            requests_ids = json.dumps(list(id_list))

            list_values = [entry["list"] for entry in my_comp_leave_requests]
            id_list = [
                instance.id for value in list_values for instance in value.object_list
            ]
            my_requests_ids = json.dumps(list(id_list))
            template = (
                "leave/leave_allocation_request/leave_allocation_request_group_by.html"
            )
        else:
            comp_leave_requests = paginator_qry(
                comp_leave_requests_filtered, page_number
            )
            my_comp_leave_requests = paginator_qry(
                my_comp_leave_requests_filtered, my_page_number
            )
            requests_ids = json.dumps(
                list(comp_leave_requests.object_list.values_list("id", flat=True))
            )
            my_requests_ids = json.dumps(
                list(my_comp_leave_requests.object_list.values_list("id", flat=True))
            )

        # Parse previous data and construct context for filter tag
        data_dict = parse_qs(previous_data)
        data_dict = get_key_instances(CompensatoryLeaveRequest, data_dict)
        data_dict.pop("m_page", None)

        context = {
            "comp_leave_requests": comp_leave_requests,
            "my_comp_leave_requests": my_comp_leave_requests,
            "pd": previous_data,
            "filter_dict": data_dict,
            "field": field,
            "requests_ids": requests_ids,
            "my_requests_ids": my_requests_ids,
        }
        return render(request, template, context=context)

    @login_required
    @is_compensatory_leave_enabled()
    @hx_request_required
    def create_compensatory_leave(request, comp_id=None):
        """
        function used to create or update compensatory leave request.

        Parameters:
        request (HttpRequest): The HTTP request object.

        Returns:
        GET : return leave allocation request form template
        POST : return leave allocation request view
        """
        employee = request.user.employee_get
        template = "leave/compensatory_leave/comp_leave_form.html"
        instance = None
        if comp_id != None:
            instance = CompensatoryLeaveRequest.objects.get(id=comp_id)
        form = CompensatoryLeaveForm(instance=instance)
        if request.method == "POST":
            form = CompensatoryLeaveForm(request.POST, instance=instance)
            if form.is_valid():
                comp_req = form.save()
                comp_req.requested_days = attendance_days(
                    comp_req.employee_id, comp_req.attendance_id.all()
                )
                comp_req.save()
                if comp_id != None:
                    messages.success(request, _("Compensatory Leave updated."))
                else:
                    messages.success(request, _("Compensatory Leave created."))
                return HttpResponse("<script>window.location.reload();</script>")

        context = {
            "employee": employee,
            "form": form,
        }
        return render(request, template, context)

    @login_required
    @is_compensatory_leave_enabled()
    @hx_request_required
    @owner_can_enter(
        perm="leave.delete_compensatoryleaverequest",
        model=CompensatoryLeaveRequest,
        manager_access=True,
    )
    def delete_compensatory_leave(request, comp_id):
        """
        function used to delete compensatory leave request,
        and reload the list view of compensatory leave requests.
        """
        try:
            comp_leave_req = CompensatoryLeaveRequest.objects.get(id=comp_id).delete()
            messages.success(request, _("Compensatory leave request deleted."))

        except:
            messages.error(request, _("Sorry, something went wrong!"))
        if request.GET.get("list") == "True":
            return redirect(filter_compensatory_leave)
        else:
            return HttpResponse("<script>location.reload();</script>")

    @login_required
    @is_compensatory_leave_enabled()
    @hx_request_required
    @manager_can_enter(perm="leave.change_compensatoryleaverequest")
    def approve_compensatory_leave(request, comp_id):
        """
        function used to approve compensatory leave request,
        and reload the list view of compensatory leave requests.
        """
        try:
            comp_leave_req = CompensatoryLeaveRequest.objects.get(id=comp_id)
            if comp_leave_req.status == "requested":
                comp_leave_req.status = "approved"
                comp_leave_req.assign_compensatory_leave_type()
                comp_leave_req.save()
                messages.success(request, _("Compensatory leave request approved."))
                with contextlib.suppress(Exception):
                    notify.send(
                        request.user.employee_get,
                        recipient=comp_leave_req.employee_id.employee_user_id,
                        verb="Your compensatory leave request has been approved",
                        verb_ar="تمت الموافقة على طلب إجازة الاعتذار الخاص بك",
                        verb_de="Ihr Antrag auf Freizeitausgleich wurde genehmigt",
                        verb_es="Su solicitud de permiso compensatorio ha sido aprobada",
                        verb_fr="Votre demande de congé compensatoire a été approuvée",
                        redirect=reverse("view-compensatory-leave")
                        + f"?id={comp_leave_req.id}",
                    )
            else:
                messages.info(
                    request,
                    _(
                        "The compensatory leave request is not in the 'requested' status."
                    ),
                )
        except:
            messages.error(request, _("Sorry, something went wrong!"))
        if request.GET.get("individual"):
            return HttpResponse("<script>location.reload();</script>")
        return redirect(filter_compensatory_leave)

    @login_required
    @is_compensatory_leave_enabled()
    @hx_request_required
    @manager_can_enter(perm="leave.delete_compensatoryleaverequest")
    def reject_compensatory_leave(request, comp_id):
        """
        function used to Reject compensatoey leave request.

        Parameters:
        request (HttpRequest): The HTTP request object.
        comp_id : compensatory leave request id

        Returns:
        GET : It returns to the default compensatory leave request view template.

        """
        comp_leave_req = CompensatoryLeaveRequest.objects.get(id=comp_id)
        if comp_leave_req.status == "requested" or comp_leave_req.status == "approved":
            form = CompensatoryLeaveRequestRejectForm()
            if request.method == "POST":
                form = CompensatoryLeaveRequestRejectForm(request.POST)
                if form.is_valid():
                    comp_leave_req.reject_reason = form.cleaned_data["reason"]
                    comp_leave_req.status = "rejected"
                    comp_leave_req.exclude_compensatory_leave()
                    comp_leave_req.save()
                    messages.success(request, _("Compensatory Leave request rejected."))
                    with contextlib.suppress(Exception):
                        notify.send(
                            request.user.employee_get,
                            recipient=comp_leave_req.employee_id.employee_user_id,
                            verb="Your compensatory leave request has been rejected",
                            verb_ar="تم رفض طلبك للإجازة التعويضية",
                            verb_de="Ihr Antrag auf Freizeitausgleich wurde abgelehnt",
                            verb_es="Se ha rechazado su solicitud de permiso compensatorio",
                            verb_fr="Votre demande de congé compensatoire a été rejetée",
                            redirect=reverse("view-compensatory-leave")
                            + f"?id={comp_leave_req.id}",
                        )
                    return HttpResponse("<script>location.reload();</script>")
            return render(
                request,
                "leave/compensatory_leave/compensatory_leave_reject_form..html",
                {"form": form, "comp_id": comp_id},
            )
        else:
            messages.error(request, _("The leave allocation request can't be rejected"))
            return HttpResponse("<script>location.reload();</script>")

    @login_required
    @is_compensatory_leave_enabled()
    @hx_request_required
    def compensatory_leave_individual_view(request, comp_leave_id):
        """
        function used to present the compensatory leave request detailed view.

        Parameters:
        request (HttpRequest): The HTTP request object.
        comp_leave_id : compensatory leave request id

        Returns:
        return compensatory leave request single view
        """
        requests_ids_json = request.GET.get("instances_ids")
        if requests_ids_json:
            requests_ids = json.loads(requests_ids_json)
            previous_id, next_id = closest_numbers(requests_ids, comp_leave_id)
        comp_leave_req = CompensatoryLeaveRequest.objects.get(id=comp_leave_id)
        context = {
            "comp_leave_req": comp_leave_req,
            "my_request": eval_validate(request.GET.get("my_request")),
            "instances_ids": requests_ids_json,
            "previous": previous_id,
            "next": next_id,
        }
        return render(
            request,
            "leave/compensatory_leave/individual_view_compensatory.html",
            context=context,
        )

    @login_required
    @is_compensatory_leave_enabled()
    @hx_request_required
    def view_compensatory_leave_comment(request, comp_leave_id):
        """
        This method is used to show Leave request comments
        """
        comments = CompensatoryLeaverequestComment.objects.filter(
            request_id=comp_leave_id
        ).order_by("-created_at")
        no_comments = False
        if not comments.exists():
            no_comments = True

        if request.FILES:
            files = request.FILES.getlist("files")
            comment_id = request.GET["comment_id"]
            comment = CompensatoryLeaverequestComment.objects.get(id=comment_id)
            attachments = []
            for file in files:
                file_instance = LeaverequestFile()
                file_instance.file = file
                file_instance.save()
                attachments.append(file_instance)
            comment.files.add(*attachments)

        return render(
            request,
            "leave/compensatory_leave/compensatory_leave_comment.html",
            {
                "comments": comments,
                "no_comments": no_comments,
                "request_id": comp_leave_id,
            },
        )

    @login_required
    @is_compensatory_leave_enabled()
    @hx_request_required
    def create_compensatory_leave_comment(request, comp_leave_id):
        """
        This method renders form and template to create Compensatory leave comments
        """
        comp_leave = CompensatoryLeaveRequest.objects.filter(id=comp_leave_id).first()
        emp = request.user.employee_get
        form = CompensatoryLeaveRequestcommentForm(
            initial={"employee_id": emp.id, "request_id": comp_leave}
        )
        target = request.GET.get("target")
        url = "request-filter" if target == "leaveRequest" else "user-request-filter"
        previous_data = request.GET.urlencode()
        if request.method == "POST":
            form = CompensatoryLeaveRequestcommentForm(request.POST)
            if form.is_valid():
                form.instance.employee_id = emp
                form.instance.request_id = comp_leave
                form.save()
                comments = CompensatoryLeaverequestComment.objects.filter(
                    request_id=comp_leave
                ).order_by("-created_at")
                no_comments = False
                if not comments.exists():
                    no_comments = True
                form = CompensatoryLeaveRequestcommentForm(
                    initial={"employee_id": emp.id, "request_id": comp_leave}
                )
                messages.success(request, _("Comment added successfully!"))
                work_info = EmployeeWorkInformation.objects.filter(
                    employee_id=comp_leave.employee_id
                )
                if work_info.exists():
                    if (
                        comp_leave.employee_id.employee_work_info.reporting_manager_id
                        is not None
                    ):
                        if request.user.employee_get.id == comp_leave.employee_id.id:
                            rec = (
                                comp_leave.employee_id.employee_work_info.reporting_manager_id.employee_user_id
                            )
                            notify.send(
                                request.user.employee_get,
                                recipient=rec,
                                verb=f"{comp_leave.employee_id}'s Compensatory leave request has received a comment.",
                                verb_ar=f"تلقى طلب إجازة الاعتذار لـ {comp_leave.employee_id} تعليقًا.",
                                verb_de=f"Der Antrag auf Freizeitausgleich von {comp_leave.employee_id} hat einen Kommentar erhalten.",
                                verb_es=f"La solicitud de permiso compensatorio de {comp_leave.employee_id} ha recibido un comentario.",
                                verb_fr=f"La demande de congé compensatoire de {comp_leave.employee_id} a reçu un commentaire.",
                                redirect=reverse("view-compensatory-leave")
                                + f"?id={comp_leave.id}",
                                icon="chatbox-ellipses",
                            )
                        elif (
                            request.user.employee_get.id
                            == comp_leave.employee_id.employee_work_info.reporting_manager_id.id
                        ):
                            rec = comp_leave.employee_id.employee_user_id
                            notify.send(
                                request.user.employee_get,
                                recipient=rec,
                                verb="Your compensatory leave request has received a comment.",
                                verb_ar="تلقى طلب إجازة العوض الخاص بك تعليقًا.",
                                verb_de="Ihr Antrag auf Freizeitausgleich hat einen Kommentar erhalten.",
                                verb_es="Su solicitud de permiso compensatorio ha recibido un comentario.",
                                verb_fr="Votre demande de congé compensatoire a reçu un commentaire.",
                                redirect=reverse("view-compensatory-leave")
                                + f"?id={comp_leave.id}",
                                icon="chatbox-ellipses",
                            )
                        else:
                            rec = [
                                comp_leave.employee_id.employee_user_id,
                                comp_leave.employee_id.employee_work_info.reporting_manager_id.employee_user_id,
                            ]
                            notify.send(
                                request.user.employee_get,
                                recipient=rec,
                                verb=f"{comp_leave.employee_id}'s compensatory leave request has received a comment.",
                                verb_ar=f"تلقى طلب إجازة التعويض لـ {comp_leave.employee_id} تعليقًا.",
                                verb_de=f"Der Antrag auf Freizeitausgleich von {comp_leave.employee_id} hat einen Kommentar erhalten.",
                                verb_es=f"El pedido de permiso compensatorio de {comp_leave.employee_id} ha recibido un comentario.",
                                verb_fr=f"La demande de congé compensatoire de {comp_leave.employee_id} a reçu un commentaire.",
                                redirect=reverse("view-compensatory-leave")
                                + f"?id={comp_leave.id}",
                                icon="chatbox-ellipses",
                            )
                    else:
                        rec = comp_leave.employee_id.employee_user_id
                        notify.send(
                            request.user.employee_get,
                            recipient=rec,
                            verb="Your compensatory leave request has received a comment.",
                            verb_ar="تلقى طلب إجازة العوض الخاص بك تعليقًا.",
                            verb_de="Ihr Antrag auf Freizeitausgleich hat einen Kommentar erhalten.",
                            verb_es="Su solicitud de permiso compensatorio ha recibido un comentario.",
                            verb_fr="Votre demande de congé compensatoire a reçu un commentaire.",
                            redirect=reverse("view-compensatory-leave")
                            + f"?id={comp_leave.id}",
                            icon="chatbox-ellipses",
                        )
                return render(
                    request,
                    "leave/compensatory_leave/compensatory_leave_comment.html",
                    {
                        "comments": comments,
                        "no_comments": no_comments,
                        "request_id": comp_leave_id,
                    },
                )
        return render(
            request,
            "leave/compensatory_leave/compensatory_leave_comment.html",
            {
                "form": form,
                "request_id": comp_leave_id,
                "pd": previous_data,
                "target": target,
                "url": url,
            },
        )


if apps.is_installed("recruitment"):

    def check_interview_conflicts(request):
        start_date = request.GET.get("start_date")
        end_date = request.GET.get("end_date")
        employee_id = request.GET.get("employee_id")

        try:
            start_date_obj = datetime.strptime(start_date, "%Y-%m-%d")
            end_date_obj = datetime.strptime(end_date, "%Y-%m-%d")
            delta = start_date_obj - end_date_obj
            date_list = [
                start_date_obj + timedelta(days=i) for i in range(delta.days + 1)
            ]
            InterviewSchedule = get_horilla_model_class(
                app_label="recruitment", model="interviewschedule"
            )

            interviews = InterviewSchedule.objects.filter(
                employee_id=employee_id, interview_date__in=date_list
            )

            response = {
                "interviews": list(
                    interviews.values_list("candidate_id__name", flat=True)
                ),
            }
            return JsonResponse(response)
        except Exception as e:
            logger.error(e)
            return JsonResponse(e)


@login_required
@permission_required("leave.view_leavegeneralsetting")
def employee_past_leave_restriction(request):
    enabled_restriction = EmployeePastLeaveRestrict.objects.first()
    if not enabled_restriction:
        enabled_restriction = EmployeePastLeaveRestrict.objects.create(enabled=True)
    if request.method == "POST":
        enabled = request.POST.get("enabled")
        if enabled:
            enabled_restriction.enabled = True
        else:
            enabled_restriction.enabled = False
        enabled_restriction.save()

    return render(
        request,
        "leave/settings/past_leave_restrict_view.html",
        {"enabled_restriction": enabled_restriction},
    )


@login_required
def employee_profile_leave_tab(request):
    """
    This method is used to view own profile of employee.
    """
    user = request.user
    employee = request.user.employee_get
    if apps.is_installed("leave"):
        instances = LeaveRequest.objects.filter(employee_id=employee)
        user_leaves = employee.available_leave.all().exclude(
            leave_type_id__is_compensatory_leave=True
        )
        if (
            LeaveGeneralSetting.objects.first()
            and LeaveGeneralSetting.objects.first().compensatory_leave
        ):
            user_leaves = employee.available_leave.all()
    else:
        user_leaves = None
        instances = None

    leave_request_ids = (
        json.dumps([instance.id for instance in instances])
        if instances
        else json.dumps([])
    )
    today = datetime.today()
    now = timezone.now()
    return render(
        request,
        "employee/profile/profile_view.html",
        {
            "employee": employee,
            "user_leaves": user_leaves,
            "leave_request_ids": leave_request_ids,
            "current_date": today,
            "now": now,
        },
    )


@login_required
def employee_view_individual_leave_tab(request, obj_id, **kwargs):
    """
    This method is used to view profile of an employee.
    """
    employee = Employee.objects.get(id=obj_id)
    instances = (
        LeaveRequest.objects.filter(employee_id=employee)
        if apps.is_installed("leave")
        else None
    )
    leave_request_ids = (
        json.dumps([instance.id for instance in instances])
        if instances
        else json.dumps([])
    )
    employee_leaves = employee.available_leave.all()
    filtered_employee_ids = request.session.get("filtered_employees", [])
    filtered_employees = Employee.objects.filter(id__in=filtered_employee_ids)

    request_ids_str = json.dumps(
        [
            instance.id
            for instance in paginator_qry(
                filtered_employees, request.GET.get("page")
            ).object_list
        ]
    )

    # Convert the string to an actual list of integers
    requests_ids = (
        ast.literal_eval(request_ids_str)
        if isinstance(request_ids_str, str)
        else request_ids_str
    )

    employee_id = employee.id
    previous_id = None
    next_id = None

    for index, req_id in enumerate(requests_ids):
        if req_id == employee_id:

            if index == len(requests_ids) - 1:
                next_id = None
            else:
                next_id = requests_ids[index + 1]
            if index == 0:
                previous_id = None
            else:
                previous_id = requests_ids[index - 1]
            break

    context = {
        "employee": employee,
        "previous": previous_id,
        "next": next_id,
        "requests_ids": requests_ids,
        "current_date": date.today(),
        "leave_request_ids": leave_request_ids,
    }
    # if the requesting user opens own data
    if request.user.employee_get == employee:
        context["user_leaves"] = employee_leaves
    else:
        context["employee_leaves"] = employee_leaves

    return render(request, "tabs/leave-tab.html", context=context)


@login_required
def leave_request_and_approve(request):
    previous_data = request.GET.urlencode()
    page_number = request.GET.get("page")
    leave_requests = LeaveRequest.objects.filter(
        status="requested",
        employee_id__is_active=True,
        start_date__gte=date.today(),
    )
    leave_requests = filtersubordinates(
        request, leave_requests, "leave.change_leaverequest"
    )

    # Filter the initial query set for multi_approve_requests
    multi_approve_requests = LeaveRequestConditionApproval.objects.filter(
        is_approved=False, is_rejected=False
    )
    if multi_approve_requests:
        multi_ids = [request.leave_request_id.id for request in multi_approve_requests]

        # Create a new list excluding leave requests with IDs in multi_ids
        leave_requests = [
            leave for leave in leave_requests if leave.id not in multi_ids
        ]

    leave_requests = paginator_qry(leave_requests, page_number)
    leave_requests_ids = json.dumps([instance.id for instance in leave_requests])
    return render(
        request,
        "request_and_approve/leave_request_approve.html",
        {
            "leave_requests": leave_requests,
            "requests_ids": leave_requests_ids,
            "pd": previous_data,
            # "current_date":date.today(),
        },
    )


@login_required
def leave_allocation_approve(request):
    previous_data = request.GET.urlencode()
    page_number = request.GET.get("page")
    allocation_reqests = LeaveAllocationRequest.objects.filter(
        status="requested", employee_id__is_active=True
    )
    allocation_reqests = filtersubordinates(
        request, allocation_reqests, "leave.view_leaveallocationrequest"
    )
    allocation_reqests = paginator_qry(allocation_reqests, page_number)
    allocation_reqests_ids = json.dumps(
        [instance.id for instance in allocation_reqests]
    )
    return render(
        request,
        "request_and_approve/leave_allocation_approve.html",
        {
            "allocation_reqests": allocation_reqests,
            "reqests_ids": allocation_reqests_ids,
            "pd": previous_data,
            # "current_date":date.today(),
        },
    )