"""
views.py

This module contains the view functions for handling HTTP requests and rendering
responses in your application.

Each view function corresponds to a specific URL route and performs the necessary
actions to handle the request, process data, and generate a response.

This module is part of the recruitment project and is intended to
provide the main entry points for interacting with the application's functionality.
"""

import ast
import contextlib
import io
import json
import os
import random
import re
from datetime import date, datetime
from itertools import chain
from urllib.parse import parse_qs

import fitz  # type: ignore
from django import template
from django.conf import settings
from django.contrib import messages
from django.contrib.auth.models import User
from django.core import serializers
from django.core.cache import cache as CACHE
from django.core.mail import EmailMessage
from django.core.paginator import Paginator
from django.db import IntegrityError, transaction
from django.db.models import Case, IntegerField, ProtectedError, Q, When
from django.http import HttpResponse, HttpResponseRedirect, JsonResponse
from django.shortcuts import get_object_or_404, redirect, render
from django.urls import reverse
from django.utils import timezone
from django.utils.translation import gettext_lazy as _
from django.views.decorators.http import require_http_methods

from base.backends import ConfiguredEmailBackend
from base.context_processors import check_candidate_self_tracking
from base.countries import country_arr, s_a, states
from base.forms import MailTemplateForm
from base.methods import (
    eval_validate,
    export_data,
    generate_pdf,
    get_key_instances,
    sortby,
)
from base.models import EmailLog, HorillaMailTemplate, JobPosition, clear_messages
from employee.models import Employee, EmployeeWorkInformation
from employee.views import get_content_type
from horilla import settings
from horilla.decorators import (
    any_permission_required,
    hx_request_required,
    logger,
    login_required,
    permission_required,
)
from horilla.group_by import group_by_queryset
from horilla_documents.models import Document
from notifications.signals import notify
from recruitment.auth import CandidateAuthenticationBackend
from recruitment.decorators import (
    candidate_login_required,
    manager_can_enter,
    recruitment_manager_can_enter,
)
from recruitment.filters import (
    CandidateFilter,
    CandidateReGroup,
    InterviewFilter,
    RecruitmentFilter,
    SkillZoneCandFilter,
    SkillZoneFilter,
    StageFilter,
)
from recruitment.forms import (
    AddCandidateForm,
    CandidateCreationForm,
    CandidateDocumentForm,
    CandidateDocumentRejectForm,
    CandidateDocumentRequestForm,
    CandidateDocumentUpdateForm,
    CandidateExportForm,
    RecruitmentCreationForm,
    RejectReasonForm,
    ResumeForm,
    ScheduleInterviewForm,
    SkillsForm,
    SkillZoneCandidateForm,
    SkillZoneCreateForm,
    StageCreationForm,
    StageNoteForm,
    StageNoteUpdateForm,
    ToSkillZoneForm,
)
from recruitment.methods import recruitment_manages
from recruitment.models import (
    Candidate,
    CandidateDocument,
    CandidateRating,
    InterviewSchedule,
    LinkedInAccount,
    Recruitment,
    RecruitmentGeneralSetting,
    RecruitmentSurvey,
    RejectReason,
    Resume,
    Skill,
    SkillZone,
    SkillZoneCandidate,
    Stage,
    StageFiles,
    StageNote,
)
from recruitment.views.linkedin import delete_post, post_recruitment_in_linkedin
from recruitment.views.paginator_qry import paginator_qry


def is_stagemanager(request, stage_id=False):
    """
    This method is used to identify the employee is a stage manager or
    not, if stage_id is passed through args, method will
    check the employee is manager to the corresponding stage, return
    tuple with boolean and all stages that employee is manager.
    if called this method without stage_id args it will return boolean
     with all the stage that the employee is stage manager
    Args:
        request : django http request
        stage_id : stage instance id
    """
    user = request.user
    employee = user.employee_get
    if not stage_id:
        return (
            employee.stage_set.exists() or user.is_superuser,
            employee.stage_set.all(),
        )
    stage_obj = Stage.objects.get(id=stage_id)
    return (
        employee in stage_obj.stage_managers.all()
        or user.is_superuser
        or is_recruitmentmanager(request, rec_id=stage_obj.recruitment_id.id)[0],
        employee.stage_set.all(),
    )


def is_recruitmentmanager(request, rec_id=False):
    """
    This method is used to identify the employee is a recruitment
    manager or not, if rec_id is passed through args, method will
    check the employee is manager to the corresponding recruitment,
    return tuple with boolean and all recruitment that employee is manager.
    if called this method without recruitment args it will return
    boolean with all the recruitment that the employee is recruitment manager
    Args:
        request : django http request
        rec_id : recruitment instance id
    """
    user = request.user
    employee = user.employee_get
    if not rec_id:
        return (
            employee.recruitment_set.exists() or user.is_superuser,
            employee.recruitment_set.all(),
        )
    recruitment_obj = Recruitment.objects.get(id=rec_id)
    return (
        employee in recruitment_obj.recruitment_managers.all() or user.is_superuser,
        employee.recruitment_set.all(),
    )


def pipeline_grouper(request, recruitments):
    groups = []
    for rec in recruitments:
        stages = StageFilter(request.GET, queryset=rec.stage_set.all()).qs.order_by(
            "sequence"
        )
        all_stages_grouper = []
        data = {"recruitment": rec, "stages": []}
        for stage in stages.order_by("sequence"):
            all_stages_grouper.append({"grouper": stage, "list": []})
            stage_candidates = CandidateFilter(
                request.GET,
                stage.candidate_set.filter(
                    is_active=True,
                ),
            ).qs.order_by("sequence")

            page_name = "page" + stage.stage + str(rec.id)
            grouper = group_by_queryset(
                stage_candidates,
                "stage_id",
                request.GET.get(page_name),
                page_name,
            ).object_list
            data["stages"] = data["stages"] + grouper

        ordered_data = []

        # combining un used groups in to the grouper
        groupers = data["stages"]
        for stage in stages:
            found = False
            for grouper in groupers:
                if grouper["grouper"] == stage:
                    ordered_data.append(grouper)
                    found = True
                    break
            if not found:
                ordered_data.append({"grouper": stage})
        data = {
            "recruitment": rec,
            "stages": ordered_data,
        }
        groups.append(data)
    return groups


@login_required
@hx_request_required
@permission_required(perm="recruitment.add_recruitment")
def recruitment(request):
    """
    This method is used to create recruitment, when create recruitment this method
    add  recruitment view,create candidate, change stage sequence and so on, some of
    the permission is checking manually instead of using django permission permission
    to the  recruitment managers
    """
    form = RecruitmentCreationForm()
    if request.GET:
        form = RecruitmentCreationForm(initial=request.GET.dict())
    dynamic = (
        request.GET.get("dynamic") if request.GET.get("dynamic") != "None" else None
    )
    if request.method == "POST":
        form = RecruitmentCreationForm(request.POST)
        if form.is_valid():
            recruitment_obj = form.save()
            recruitment_obj.recruitment_managers.set(
                Employee.objects.filter(
                    id__in=form.data.getlist("recruitment_managers")
                )
            )
            recruitment_obj.open_positions.set(
                JobPosition.objects.filter(id__in=form.data.getlist("open_positions"))
            )
            if (
                recruitment_obj.publish_in_linkedin
                and recruitment_obj.linkedin_account_id
            ):
                post_recruitment_in_linkedin(
                    request, recruitment_obj, recruitment_obj.linkedin_account_id
                )
            for survey in form.cleaned_data["survey_templates"]:
                for sur in survey.recruitmentsurvey_set.all():
                    sur.recruitment_ids.add(recruitment_obj)
            messages.success(request, _("Recruitment added."))
            with contextlib.suppress(Exception):
                managers = recruitment_obj.recruitment_managers.select_related(
                    "employee_user_id"
                )
                users = [employee.employee_user_id for employee in managers]
                notify.send(
                    request.user.employee_get,
                    recipient=users,
                    verb="You are chosen as one of recruitment manager",
                    verb_ar="تم اختيارك كأحد مديري التوظيف",
                    verb_de="Sie wurden als einer der Personalvermittler ausgewählt",
                    verb_es="Has sido elegido/a como uno de los gerentes de contratación",
                    verb_fr="Vous êtes choisi(e) comme l'un des responsables du recrutement",
                    icon="people-circle",
                    redirect=reverse("pipeline"),
                )
            return HttpResponse("<script>location.reload();</script>")
    return render(
        request, "recruitment/recruitment_form.html", {"form": form, "dynamic": dynamic}
    )


@login_required
@permission_required(perm="recruitment.view_recruitment")
def recruitment_view(request):
    """
    This method is used to  render all recruitment to view
    """
    if not request.GET:
        request.GET.copy().update({"is_active": "on"})
    queryset = Recruitment.objects.filter(is_active=True)
    if Recruitment.objects.all():
        template = "recruitment/recruitment_view.html"
    else:
        template = "recruitment/recruitment_empty.html"
    initial_tag = {}
    if request.GET.get("closed") == "false":
        queryset = queryset.filter(closed=True)
        initial_tag["closed"] = ["true"]
    else:
        queryset = queryset.filter(closed=False)
        initial_tag["closed"] = ["false"]

    filter_obj = RecruitmentFilter(request.GET, queryset)
    filter_dict = request.GET.copy()
    for key, value in initial_tag.items():
        filter_dict[key] = value

    return render(
        request,
        template,
        {
            "data": paginator_qry(filter_obj.qs, request.GET.get("page")),
            "f": filter_obj,
            "filter_dict": filter_dict,
            "pd": request.GET.urlencode() + "&closed=false",
        },
    )


@login_required
@permission_required(perm="recruitment.change_recruitment")
@hx_request_required
def recruitment_update(request, rec_id):
    """
    This method is used to update the recruitment, when updating the recruitment,
    any changes in manager is exists then permissions also assigned to the manager
    Args:
        id : recruitment_id
    """
    recruitment_obj = Recruitment.find(rec_id)
    if not recruitment_obj:
        messages.error(
            request, _("The recruitment entry you are trying to edit does not exist.")
        )
        return HttpResponse("<script>window.location.reload();</script>")
    survey_template_list = []
    survey_templates = RecruitmentSurvey.objects.filter(
        recruitment_ids=rec_id
    ).distinct()
    for survey in survey_templates:
        survey_template_list.append(survey.template_id.all())
    form = RecruitmentCreationForm(instance=recruitment_obj)
    if request.GET:
        form = RecruitmentCreationForm(request.GET)
    dynamic = (
        request.GET.get("dynamic") if request.GET.get("dynamic") != "None" else None
    )
    if request.method == "POST":
        form = RecruitmentCreationForm(request.POST, instance=recruitment_obj)
        if form.is_valid():
            recruitment_obj = form.save()
            for survey in form.cleaned_data["survey_templates"]:
                for sur in survey.recruitmentsurvey_set.all():
                    sur.recruitment_ids.add(recruitment_obj)
            recruitment_obj.save()
            if len(form.changed_data) > 0:
                if (
                    recruitment_obj.publish_in_linkedin
                    and recruitment_obj.linkedin_account_id
                ):
                    delete_post(recruitment_obj)
                    post_recruitment_in_linkedin(
                        request, recruitment_obj, recruitment_obj.linkedin_account_id
                    )
            messages.success(request, _("Recruitment Updated."))
            response = render(
                request, "recruitment/recruitment_form.html", {"form": form}
            )
            with contextlib.suppress(Exception):
                managers = recruitment_obj.recruitment_managers.select_related(
                    "employee_user_id"
                )
                users = [employee.employee_user_id for employee in managers]
                notify.send(
                    request.user.employee_get,
                    recipient=users,
                    verb=f"{recruitment_obj} is updated, You are chosen as one of the managers",
                    verb_ar=f"{recruitment_obj} تم تحديثه، تم اختيارك كأحد المديرين",
                    verb_de=f"{recruitment_obj} wurde aktualisiert. Sie wurden als\
                            einer der Manager ausgewählt",
                    verb_es=f"{recruitment_obj} ha sido actualizado/a. Has sido elegido\
                            a como uno de los gerentes",
                    verb_fr=f"{recruitment_obj} a été mis(e) à jour. Vous êtes choisi(e) comme\
                            l'un des responsables",
                    icon="people-circle",
                    redirect=reverse("pipeline"),
                )

            return HttpResponse(
                response.content.decode("utf-8") + "<script>location.reload();</script>"
            )
    return render(
        request,
        "recruitment/recruitment_update_form.html",
        {"form": form, "dynamic": dynamic},
    )


def paginator_qry_recruitment_limited(qryset, page_number):
    """
    This method is used to generate common paginator limit.
    """
    paginator = Paginator(qryset, 4)
    qryset = paginator.get_page(page_number)
    return qryset


user_recruitments = {}


@login_required
@manager_can_enter(perm="recruitment.view_recruitment")
def recruitment_pipeline(request):
    """
    This method is used to filter out candidate through pipeline structure
    """
    filter_obj = RecruitmentFilter(
        request.GET,
    )
    if filter_obj.qs.exists():
        template = "pipeline/pipeline.html"
    else:
        template = "pipeline/pipeline_empty.html"
    stage_filter = StageFilter(request.GET)
    candidate_filter = CandidateFilter(request.GET)
    recruitments = paginator_qry_recruitment_limited(
        filter_obj.qs, request.GET.get("page")
    )

    now = timezone.now()

    return render(
        request,
        template,
        {
            "rec_filter_obj": filter_obj,
            "recruitment": recruitments,
            "stage_filter_obj": stage_filter,
            "candidate_filter_obj": candidate_filter,
            "now": now,
        },
    )


@login_required
@hx_request_required
@manager_can_enter(perm="recruitment.view_recruitment")
def filter_pipeline(request):
    """
    This method is used to search/filter from pipeline
    """
    filter_obj = RecruitmentFilter(request.GET)
    stage_filter = StageFilter(request.GET)
    candidate_filter = CandidateFilter(request.GET)
    view = request.GET.get("view")
    recruitments = filter_obj.qs.filter(is_active=True)
    if not request.user.has_perm("recruitment.view_recruitment"):
        recruitments = recruitments.filter(
            Q(recruitment_managers=request.user.employee_get)
        )
        stage_recruitment_ids = (
            stage_filter.qs.filter(stage_managers=request.user.employee_get)
            .values_list("recruitment_id", flat=True)
            .distinct()
        )
        recruitments = recruitments | filter_obj.qs.filter(id__in=stage_recruitment_ids)
        recruitments = recruitments.filter(is_active=True).distinct()

    closed = request.GET.get("closed")
    filter_dict = parse_qs(request.GET.urlencode())
    filter_dict = get_key_instances(Recruitment, filter_dict)

    CACHE.set(
        request.session.session_key + "pipeline",
        {
            "candidates": candidate_filter.qs.filter(is_active=True).order_by(
                "sequence"
            ),
            "stages": stage_filter.qs.order_by("sequence"),
            "recruitments": recruitments,
            "filter_dict": filter_dict,
            "filter_query": request.GET,
        },
    )

    previous_data = request.GET.urlencode()
    paginator = Paginator(recruitments, 4)
    page_number = request.GET.get("page")
    page_obj = paginator.get_page(page_number)

    template = "pipeline/components/pipeline_search_components.html"
    if request.GET.get("view") == "card":
        template = "pipeline/kanban_components/kanban.html"
    return render(
        request,
        template,
        {
            "recruitment": page_obj,
            "stage_filter_obj": stage_filter,
            "candidate_filter_obj": candidate_filter,
            "filter_dict": filter_dict,
            "status": closed,
            "view": view,
            "pd": previous_data,
        },
    )


@login_required
@manager_can_enter("recruitment.view_recruitment")
def get_stage_badge_count(request):
    """
    Method to update stage badge count
    """
    stage_id = request.GET["stage_id"]
    stage = Stage.objects.get(id=stage_id)
    count = stage.candidate_set.filter(is_active=True).count()
    return HttpResponse(count)


@login_required
@manager_can_enter(perm="recruitment.view_recruitment")
def stage_component(request, view: str = "list"):
    """
    This method will stage tab contents
    """
    recruitment_id = request.GET["rec_id"]
    recruitment = Recruitment.objects.get(id=recruitment_id)
    ordered_stages = CACHE.get(request.session.session_key + "pipeline")[
        "stages"
    ].filter(recruitment_id__id=recruitment_id)
    template = "pipeline/components/stages_tab_content.html"
    if view == "card":
        template = "pipeline/kanban_components/kanban_stage_components.html"
    return render(
        request,
        template,
        {
            "rec": recruitment,
            "ordered_stages": ordered_stages,
            "filter_dict": CACHE.get(request.session.session_key + "pipeline")[
                "filter_dict"
            ],
        },
    )


@login_required
@manager_can_enter(perm="recruitment.change_candidate")
def update_candidate_stage_and_sequence(request):
    """
    Update candidate sequence method
    """
    order_list = request.GET.getlist("order")
    stage_id = request.GET["stage_id"]
    stage = (
        CACHE.get(request.session.session_key + "pipeline")["stages"]
        .filter(id=stage_id)
        .first()
    )
    context = {}
    for index, cand_id in enumerate(order_list):
        candidate = CACHE.get(request.session.session_key + "pipeline")[
            "candidates"
        ].filter(id=cand_id)
        candidate.update(sequence=index, stage_id=stage)
    if stage.stage_type == "hired":
        if stage.recruitment_id.is_vacancy_filled():
            context["message"] = _("Vaccancy is filled")
            context["vacancy"] = stage.recruitment_id.vacancy
    return JsonResponse(context)


@login_required
@manager_can_enter(perm="recruitment.change_candidate")
def update_candidate_sequence(request):
    """
    Update candidate sequence method
    """
    order_list = request.GET.getlist("order")
    stage_id = request.GET["stage_id"]
    stage = (
        CACHE.get(request.session.session_key + "pipeline")["stages"]
        .filter(id=stage_id)
        .first()
    )
    data = {}

    for index, cand_id in enumerate(order_list):
        candidate = CACHE.get(request.session.session_key + "pipeline")[
            "candidates"
        ].filter(id=cand_id)
        candidate.update(
            sequence=index, stage_id=stage, hired=(stage.stage_type == "hired")
        )

    return JsonResponse(data)


def limited_paginator_qry(queryset, page):
    """
    Limited pagination
    """
    paginator = Paginator(queryset, 10)
    queryset = paginator.get_page(page)
    return queryset


@login_required
@hx_request_required
@manager_can_enter(perm="recruitment.view_recruitment")
def candidate_component(request):
    """
    Candidate component
    """
    stage_id = request.GET.get("stage_id")
    stage = (
        CACHE.get(request.session.session_key + "pipeline")["stages"]
        .filter(id=stage_id)
        .first()
    )
    candidates = CACHE.get(request.session.session_key + "pipeline")[
        "candidates"
    ].filter(stage_id=stage)

    template = "pipeline/components/candidate_stage_component.html"
    if (
        CACHE.get(request.session.session_key + "pipeline")["filter_query"].get("view")
        == "card"
    ):
        template = "pipeline/kanban_components/candidate_kanban_components.html"

    now = timezone.now()
    return render(
        request,
        template,
        {
            "candidates": limited_paginator_qry(
                candidates, request.GET.get("candidate_page")
            ),
            "stage": stage,
            "rec": getattr(candidates.first(), "recruitment_id", {}),
            "now": now,
        },
    )


@login_required
@manager_can_enter("recruitment.change_candidate")
def change_candidate_stage(request):
    """
    This method is used to update candidates stage
    """
    if request.method == "POST":
        canIds = request.POST["canIds"]
        stage_id = request.POST["stageId"]
        context = {}
        if request.GET.get("bulk") == "True":
            canIds = json.loads(canIds)
            for cand_id in canIds:
                try:
                    candidate = Candidate.objects.get(id=cand_id)
                    stage = Stage.objects.filter(
                        recruitment_id=candidate.recruitment_id, id=stage_id
                    ).first()
                    if stage:
                        candidate.stage_id = stage
                        candidate.save()
                        if stage.stage_type == "hired":
                            if stage.recruitment_id.is_vacancy_filled():
                                context["message"] = _("Vaccancy is filled")
                                context["vacancy"] = stage.recruitment_id.vacancy
                        messages.success(request, _("Candidate stage updated"))
                except Candidate.DoesNotExist:
                    messages.error(request, _("Candidate not found."))
        else:
            try:
                candidate = Candidate.objects.get(id=canIds)
                stage = Stage.objects.filter(
                    recruitment_id=candidate.recruitment_id, id=stage_id
                ).first()
                if stage:
                    candidate.stage_id = stage
                    candidate.save()
                    if stage.stage_type == "hired":
                        if stage.recruitment_id.is_vacancy_filled():
                            context["message"] = _("Vaccancy is filled")
                            context["vacancy"] = stage.recruitment_id.vacancy
                    candidate.stage_id = stage
                    candidate.save()
                    messages.success(request, _("Candidate stage updated"))
            except Candidate.DoesNotExist:
                messages.error(request, _("Candidate not found."))
        return JsonResponse(context)
    candidate_id = request.GET["candidate_id"]
    stage_id = request.GET["stage_id"]
    candidate = Candidate.objects.get(id=candidate_id)
    stage = Stage.objects.filter(
        recruitment_id=candidate.recruitment_id, id=stage_id
    ).first()
    if stage:
        candidate.stage_id = stage
        candidate.save()
        messages.success(request, _("Candidate stage updated"))
    return stage_component(request)


@login_required
@permission_required(perm="recruitment.view_recruitment")
def recruitment_pipeline_card(request):
    """
    This method is used to render pipeline card structure.
    """
    search = request.GET.get("search")
    search = search if search is not None else ""
    recruitment_obj = Recruitment.objects.all()
    candidates = Candidate.objects.filter(name__icontains=search, is_active=True)
    stages = Stage.objects.all()
    return render(
        request,
        "pipeline/pipeline_components/pipeline_card_view.html",
        {"recruitment": recruitment_obj, "candidates": candidates, "stages": stages},
    )


@login_required
@permission_required(perm="recruitment.delete_recruitment")
def recruitment_archive(request, rec_id):
    """
    This method is used to archive and unarchive the recruitment
    args:
        rec_id: The id of the Recruitment
    """
    try:
        recruitment = Recruitment.objects.get(id=rec_id)
        if recruitment.is_active:
            recruitment.is_active = False
        else:
            recruitment.is_active = True
        recruitment.save()
    except (Recruitment.DoesNotExist, OverflowError):
        messages.error(request, _("Recruitment Does not exists.."))
    return HttpResponseRedirect(request.META.get("HTTP_REFERER", "/"))


@login_required
@hx_request_required
@manager_can_enter(perm="recruitment.change_stage")
def stage_update_pipeline(request, stage_id):
    """
    This method is used to update stage from pipeline view
    """
    stage_obj = Stage.objects.get(id=stage_id)
    form = StageCreationForm(instance=stage_obj)
    if request.POST:
        form = StageCreationForm(request.POST, instance=stage_obj)
        if form.is_valid():
            stage_obj = form.save()
            messages.success(request, _("Stage updated."))
            with contextlib.suppress(Exception):
                managers = stage_obj.stage_managers.select_related("employee_user_id")
                users = [employee.employee_user_id for employee in managers]
                notify.send(
                    request.user.employee_get,
                    recipient=users,
                    verb=f"{stage_obj.stage} stage in recruitment {stage_obj.recruitment_id}\
                            is updated, You are chosen as one of the managers",
                    verb_ar=f"تم تحديث مرحلة {stage_obj.stage} في التوظيف {stage_obj.recruitment_id}\
                            ، تم اختيارك كأحد المديرين",
                    verb_de=f"Die Stufe {stage_obj.stage} in der Rekrutierung {stage_obj.recruitment_id}\
                            wurde aktualisiert. Sie wurden als einer der Manager ausgewählt",
                    verb_es=f"Se ha actualizado la etapa {stage_obj.stage} en la contratación\
                          {stage_obj.recruitment_id}.Has sido elegido/a como uno de los gerentes",
                    verb_fr=f"L'étape {stage_obj.stage} dans le recrutement {stage_obj.recruitment_id}\
                          a été mise à jour.Vous avez été choisi(e) comme l'un des responsables",
                    icon="people-circle",
                    redirect=reverse("pipeline"),
                )

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

    return render(request, "pipeline/form/stage_update.html", {"form": form})


@login_required
@hx_request_required
@recruitment_manager_can_enter(perm="recruitment.change_recruitment")
def recruitment_update_pipeline(request, rec_id):
    """
    This method is used to update recruitment from pipeline view
    """
    recruitment_obj = Recruitment.objects.get(id=rec_id)
    form = RecruitmentCreationForm(instance=recruitment_obj)
    if request.POST:
        form = RecruitmentCreationForm(request.POST, instance=recruitment_obj)
        if form.is_valid():
            recruitment_obj = form.save()
            messages.success(request, _("Recruitment updated."))
            with contextlib.suppress(Exception):
                managers = recruitment_obj.recruitment_managers.select_related(
                    "employee_user_id"
                )
                users = [employee.employee_user_id for employee in managers]
                notify.send(
                    request.user.employee_get,
                    recipient=users,
                    verb=f"{recruitment_obj} is updated, You are chosen as one of the managers",
                    verb_ar=f"تم تحديث {recruitment_obj}، تم اختيارك كأحد المديرين",
                    verb_de=f"{recruitment_obj} wurde aktualisiert.\
                          Sie wurden als einer der Manager ausgewählt",
                    verb_es=f"{recruitment_obj} ha sido actualizado/a. Has sido elegido\
                            a como uno de los gerentes",
                    verb_fr=f"{recruitment_obj} a été mis(e) à jour. Vous avez été\
                            choisi(e) comme l'un des responsables",
                    icon="people-circle",
                    redirect=reverse("pipeline"),
                )

            response = render(
                request, "pipeline/form/recruitment_update.html", {"form": form}
            )
            return HttpResponse(
                response.content.decode("utf-8") + "<script>location.reload();</script>"
            )
    return render(request, "pipeline/form/recruitment_update.html", {"form": form})


@login_required
@recruitment_manager_can_enter(perm="recruitment.change_recruitment")
def recruitment_close_pipeline(request, rec_id):
    """
    This method is used to close recruitment from pipeline view
    """
    try:
        recruitment_obj = Recruitment.objects.get(id=rec_id)
        recruitment_obj.closed = True
        recruitment_obj.save()
        messages.success(request, "Recruitment closed successfully")
    except (Recruitment.DoesNotExist, OverflowError):
        messages.error(request, _("Recruitment Does not exists.."))
    return HttpResponseRedirect(request.META.get("HTTP_REFERER", "/"))


@login_required
@recruitment_manager_can_enter(perm="recruitment.change_recruitment")
def recruitment_reopen_pipeline(request, rec_id):
    """
    This method is used to reopen recruitment from pipeline view
    """
    recruitment_obj = Recruitment.objects.get(id=rec_id)
    recruitment_obj.closed = False
    recruitment_obj.save()

    messages.success(request, "Recruitment reopend successfully")
    return HttpResponseRedirect(request.META.get("HTTP_REFERER", "/"))


@login_required
@manager_can_enter(perm="recruitment.change_candidate")
def candidate_stage_update(request, cand_id):
    """
    This method is a ajax method used to update candidate stage when drag and drop
    the candidate from one stage to another on the pipeline template
    Args:
        id : candidate_id
    """
    stage_id = request.POST["stageId"]
    candidate_obj = Candidate.objects.get(id=cand_id)
    history_queryset = candidate_obj.history_set.all().first()
    stage_obj = Stage.objects.get(id=stage_id)
    if candidate_obj.stage_id == stage_obj:
        return JsonResponse({"type": "noChange", "message": _("No change detected.")})
    # Here set the last updated schedule date on this stage if schedule exists in history
    history_queryset = candidate_obj.history_set.filter(stage_id=stage_obj)
    schedule_date = None
    if history_queryset.exists():
        # this condition is executed when a candidate dropped back to any previous
        # stage, if there any scheduled date then set it back
        schedule_date = history_queryset.first().schedule_date
    stage_manager_on_this_recruitment = (
        is_stagemanager(request)[1]
        .filter(recruitment_id=stage_obj.recruitment_id)
        .exists()
    )
    if (
        stage_manager_on_this_recruitment
        or request.user.is_superuser
        or is_recruitmentmanager(rec_id=stage_obj.recruitment_id.id)[0]
    ):
        candidate_obj.stage_id = stage_obj
        candidate_obj.hired = stage_obj.stage_type == "hired"
        candidate_obj.canceled = stage_obj.stage_type == "cancelled"
        candidate_obj.schedule_date = schedule_date
        candidate_obj.start_onboard = False
        candidate_obj.save()
        with contextlib.suppress(Exception):
            managers = stage_obj.stage_managers.select_related("employee_user_id")
            users = [employee.employee_user_id for employee in managers]
            notify.send(
                request.user.employee_get,
                recipient=users,
                verb=f"New candidate arrived on stage {stage_obj.stage}",
                verb_ar=f"وصل مرشح جديد إلى المرحلة {stage_obj.stage}",
                verb_de=f"Neuer Kandidat ist auf der Stufe {stage_obj.stage} angekommen",
                verb_es=f"Nuevo candidato llegó a la etapa {stage_obj.stage}",
                verb_fr=f"Nouveau candidat arrivé à l'étape {stage_obj.stage}",
                icon="person-add",
                redirect=reverse("pipeline"),
            )

        return JsonResponse(
            {"type": "success", "message": _("Candidate stage updated")}
        )
    return JsonResponse(
        {"type": "danger", "message": _("Something went wrong, Try agian.")}
    )


@login_required
@hx_request_required
@manager_can_enter(perm="recruitment.view_stagenote")
def view_note(request, cand_id):
    """
    This method renders a template components to view candidate remark or note
    Args:
        id : candidate instance id
    """
    candidate_obj = Candidate.objects.get(id=cand_id)
    notes = candidate_obj.stagenote_set.all().order_by("-id")
    return render(
        request,
        "pipeline/pipeline_components/view_note.html",
        {"cand": candidate_obj, "notes": notes},
    )


@login_required
@hx_request_required
@manager_can_enter(perm="recruitment.add_stagenote")
def add_note(request, cand_id=None):
    """
    This method renders template component to add candidate remark
    """
    form = StageNoteForm(initial={"candidate_id": cand_id})
    if request.method == "POST":
        form = StageNoteForm(
            request.POST,
            request.FILES,
        )
        if form.is_valid():
            note, attachment_ids = form.save(commit=False)
            candidate = Candidate.objects.get(id=cand_id)
            note.candidate_id = candidate
            note.stage_id = candidate.stage_id
            note.updated_by = request.user.employee_get
            note.save()
            note.stage_files.set(attachment_ids)
            messages.success(request, _("Note added successfully.."))
    candidate_obj = Candidate.objects.get(id=cand_id)
    return render(
        request,
        "candidate/individual_view_note.html",
        {
            "candidate": candidate_obj,
            "note_form": form,
        },
    )


@login_required
@hx_request_required
@manager_can_enter(perm="recruitment.add_stagenote")
def create_note(request, cand_id=None):
    """
    This method renders template component to add candidate remark
    """
    form = StageNoteForm(initial={"candidate_id": cand_id})
    if request.method == "POST":
        form = StageNoteForm(request.POST, request.FILES)
        if form.is_valid():
            note, attachment_ids = form.save(commit=False)
            candidate = Candidate.objects.get(id=cand_id)
            note.candidate_id = candidate
            note.stage_id = candidate.stage_id
            note.updated_by = request.user.employee_get
            note.save()
            note.stage_files.set(attachment_ids)
            messages.success(request, _("Note added successfully.."))
            return redirect("view-note", cand_id=cand_id)
    candidate_obj = Candidate.objects.get(id=cand_id)
    notes = candidate_obj.stagenote_set.all().order_by("-id")
    return render(
        request,
        "pipeline/pipeline_components/view_note.html",
        {"note_form": form, "cand": candidate_obj, "notes": notes},
    )


@login_required
@manager_can_enter(perm="recruitment.change_stagenote")
def note_update(request, note_id):
    """
    This method is used to update the stage not
    Args:
        id : stage note instance id
    """
    note = StageNote.objects.get(id=note_id)
    form = StageNoteUpdateForm(instance=note)
    if request.POST:
        form = StageNoteUpdateForm(request.POST, request.FILES, instance=note)
        if form.is_valid():
            form.save()
            messages.success(request, _("Note updated successfully..."))
            cand_id = note.candidate_id.id
            return redirect("view-note", cand_id=cand_id)

    return render(
        request, "pipeline/pipeline_components/update_note.html", {"form": form}
    )


@login_required
@manager_can_enter(perm="recruitment.change_stagenote")
def note_update_individual(request, note_id):
    """
    This method is used to update the stage not
    Args:
        id : stage note instance id
    """
    note = StageNote.objects.get(id=note_id)
    form = StageNoteForm(instance=note)
    if request.POST:
        form = StageNoteForm(request.POST, request.FILES, instance=note)
        if form.is_valid():
            form.save()
            messages.success(request, _("Note updated successfully..."))
            response = render(
                request,
                "pipeline/pipeline_components/update_note_individual.html",
                {"form": form},
            )
            return HttpResponse(
                response.content.decode("utf-8") + "<script>location.reload();</script>"
            )
    return render(
        request,
        "pipeline/pipeline_components/update_note_individual.html",
        {
            "form": form,
        },
    )


@login_required
@hx_request_required
def add_more_files(request, id):
    """
    This method is used to Add more files to the stage candidate note.
    Args:
        id : stage note instance id
    """
    note = StageNote.objects.get(id=id)
    if request.method == "POST":
        files = request.FILES.getlist("files")
        files_ids = []
        for file in files:
            instance = StageFiles.objects.create(files=file)
            files_ids.append(instance.id)

            note.stage_files.add(instance.id)
    return redirect("view-note", cand_id=note.candidate_id.id)


@login_required
@hx_request_required
def add_more_individual_files(request, id):
    """
    This method is used to Add more files to the stage candidate note.
    Args:
        id : stage note instance id
    """
    note = StageNote.objects.get(id=id)
    if request.method == "POST":
        files = request.FILES.getlist("files")
        files_ids = []
        for file in files:
            instance = StageFiles.objects.create(files=file)
            files_ids.append(instance.id)
            note.stage_files.add(instance.id)
        messages.success(request, _("Files uploaded successfully"))
    return redirect(f"/recruitment/add-note/{note.candidate_id.id}/")


@login_required
def delete_stage_note_file(request, id):
    """
    This method is used to delete the stage note file
    Args:
        id : stage file instance id
    """
    script = ""
    file = StageFiles.objects.get(id=id)
    file.delete()
    messages.success(request, _("File deleted successfully"))
    return HttpResponse(script)


@login_required
@hx_request_required
def delete_individual_note_file(request, id):
    """
    This method is used to delete the stage note file
    Args:
        id : stage file instance id
    """
    script = ""
    file = StageFiles.objects.get(id=id)
    cand_id = file.stagenote_set.all().first().candidate_id.id
    file.delete()
    messages.success(request, _("File deleted successfully"))
    return HttpResponse(script)


@login_required
@hx_request_required
@manager_can_enter(perm="recruitment.add_stagenote")
def candidate_can_view_note(request, id):
    note = StageNote.objects.filter(id=id)
    note.update(candidate_can_view=not note.first().candidate_can_view)

    messages.success(request, _("Candidate view status updated"))
    return redirect("view-note", cand_id=note.first().candidate_id.id)


@login_required
@permission_required(perm="recruitment.change_candidate")
def candidate_schedule_date_update(request):
    """
    This is a an ajax method to update schedule date for a candidate
    """
    candidate_id = request.POST["candidateId"]
    schedule_date = request.POST["date"]
    candidate_obj = Candidate.objects.get(id=candidate_id)
    candidate_obj.schedule_date = schedule_date
    candidate_obj.save()
    return JsonResponse({"message": "congratulations"})


@login_required
@manager_can_enter(perm="recruitment.add_stage")
def stage(request):
    """
    This method is used to create stages, also several permission assigned to the stage managers
    """
    form = StageCreationForm(
        initial={"recruitment_id": request.GET.get("recruitment_id")}
    )
    if request.method == "POST":
        form = StageCreationForm(request.POST)
        if form.is_valid():
            stage_obj = form.save()
            stage_obj.stage_managers.set(
                Employee.objects.filter(id__in=form.data.getlist("stage_managers"))
            )
            stage_obj.save()
            recruitment_obj = stage_obj.recruitment_id
            rec_stages = (
                Stage.objects.filter(recruitment_id=recruitment_obj, is_active=True)
                .order_by("sequence")
                .last()
            )
            if rec_stages.sequence is None:
                stage_obj.sequence = 1
            else:
                stage_obj.sequence = rec_stages.sequence + 1
            stage_obj.save()
            messages.success(request, _("Stage added."))
            with contextlib.suppress(Exception):
                managers = stage_obj.stage_managers.select_related("employee_user_id")
                users = [employee.employee_user_id for employee in managers]
                notify.send(
                    request.user.employee_get,
                    recipient=users,
                    verb=f"Stage {stage_obj} is updated on recruitment {stage_obj.recruitment_id},\
                          You are chosen as one of the managers",
                    verb_ar=f"تم تحديث المرحلة {stage_obj} في التوظيف\
                          {stage_obj.recruitment_id}، تم اختيارك كأحد المديرين",
                    verb_de=f"Stufe {stage_obj} wurde in der Rekrutierung {stage_obj.recruitment_id}\
                          aktualisiert. Sie wurden als einer der Manager ausgewählt",
                    verb_es=f"La etapa {stage_obj} ha sido actualizada en la contratación\
                          {stage_obj.recruitment_id}. Has sido elegido/a como uno de los gerentes",
                    verb_fr=f"L'étape {stage_obj} a été mise à jour dans le recrutement\
                          {stage_obj.recruitment_id}. Vous avez été choisi(e) comme l'un des responsables",
                    icon="people-circle",
                    redirect=reverse("pipeline"),
                )

            return HttpResponse("<script>location.reload();</script>")
    return render(request, "stage/stage_form.html", {"form": form})


@login_required
@permission_required(perm="recruitment.view_stage")
def stage_view(request):
    """
    This method is used to render all stages to a template
    """
    stages = Stage.objects.all()
    stages = stages.filter(recruitment_id__is_active=True)
    recruitments = group_by_queryset(
        stages,
        "recruitment_id",
        request.GET.get("rpage"),
    )
    filter_obj = StageFilter()
    form = StageCreationForm()
    if stages.exists():
        template = "stage/stage_view.html"
    else:
        template = "stage/stage_empty.html"
    return render(
        request,
        template,
        {
            "data": paginator_qry(stages, request.GET.get("page")),
            "form": form,
            "f": filter_obj,
            "recruitments": recruitments,
        },
    )


def stage_data(request, rec_id):
    stages = StageFilter(request.GET).qs.filter(recruitment_id__id=rec_id)
    previous_data = request.GET.urlencode()
    data_dict = parse_qs(previous_data)
    get_key_instances(Stage, data_dict)

    return render(
        request,
        "stage/stage_component.html",
        {
            "data": paginator_qry(stages, request.GET.get("page")),
            "filter_dict": data_dict,
            "pd": request.GET.urlencode(),
            "hx_target": request.META.get("HTTP_HX_TARGET"),
        },
    )


@login_required
@manager_can_enter(perm="recruitment.change_stage")
@hx_request_required
def stage_update(request, stage_id):
    """
    This method is used to update stage, if the managers changed then\
    permission assigned to new managers also
    Args:
        id : stage_id

    """
    stages = Stage.objects.get(id=stage_id)
    form = StageCreationForm(instance=stages)
    if request.method == "POST":
        form = StageCreationForm(request.POST, instance=stages)
        if form.is_valid():
            form.save()
            messages.success(request, _("Stage updated."))
            response = render(
                request, "recruitment/recruitment_form.html", {"form": form}
            )
            return HttpResponse(
                response.content.decode("utf-8") + "<script>location.reload();</script>"
            )
    return render(request, "stage/stage_update_form.html", {"form": form})


@login_required
@hx_request_required
@manager_can_enter("recruitment.add_candidate")
def add_candidate(request):
    """
    This method is used to add candidate directly to the stage
    """
    form = AddCandidateForm(initial={"stage_id": request.GET.get("stage_id")})
    if request.POST:
        form = AddCandidateForm(
            request.POST,
            request.FILES,
            initial={"stage_id": request.GET.get("stage_id")},
        )
        if form.is_valid():
            form.save()
            messages.success(request, "Candidate Added")
            return HttpResponse("<script>window.location.reload()</script>")
    return render(request, "pipeline/form/candidate_form.html", {"form": form})


@login_required
@require_http_methods(["POST"])
@hx_request_required
def stage_title_update(request, stage_id):
    """
    This method is used to update the name of recruitment stage
    """
    stage_obj = Stage.objects.get(id=stage_id)
    stage_obj.stage = request.POST["stage"]
    stage_obj.save()
    message = _("The stage title has been updated successfully")
    return HttpResponse(
        f'<div class="oh-alert-container"><div class="oh-alert oh-alert--animated oh-alert--success">{message}</div></div>'
    )


@login_required
@any_permission_required(
    perms=["recruitment.add_candidate", "onboarding.add_onboardingcandidate"]
)
def candidate(request):
    """
    This method used to create candidate
    """
    form = CandidateCreationForm()
    open_recruitment = Recruitment.objects.filter(closed=False, is_active=True)
    path = "/recruitment/candidate-view"
    if request.method == "POST":
        form = CandidateCreationForm(request.POST, request.FILES)
        if form.is_valid():
            candidate_obj = form.save(commit=False)
            candidate_obj.start_onboard = False
            candidate_obj.source = "software"
            if candidate_obj.stage_id is None:
                candidate_obj.stage_id = Stage.objects.filter(
                    recruitment_id=candidate_obj.recruitment_id, stage_type="initial"
                ).first()
            # when creating new candidate from onboarding view
            if request.GET.get("onboarding") == "True":
                candidate_obj.hired = True
                path = "/onboarding/candidates-view"
            if form.data.get("job_position_id"):
                candidate_obj.save()
                messages.success(request, _("Candidate added."))
            else:
                messages.error(request, "Job position field is required")
                return render(
                    request,
                    "candidate/candidate_create_form.html",
                    {"form": form, "open_recruitment": open_recruitment},
                )
            return redirect(path)

    return render(
        request,
        "candidate/candidate_create_form.html",
        {"form": form, "open_recruitment": open_recruitment},
    )


@login_required
@permission_required(perm="recruitment.add_candidate")
def recruitment_stage_get(_, rec_id):
    """
    This method returns all stages as json
    Args:
        id: recruitment_id
    """
    recruitment_obj = Recruitment.objects.get(id=rec_id)
    all_stages = recruitment_obj.stage_set.all()
    all_stage_json = serializers.serialize("json", all_stages)
    return JsonResponse({"stages": all_stage_json})


@login_required
@permission_required(perm="recruitment.view_candidate")
def candidate_view(request):
    """
    This method render all candidate to the template
    """
    view_type = request.GET.get("view")
    previous_data = request.GET.urlencode()
    candidates = Candidate.objects.filter(is_active=True)
    recruitments = Recruitment.objects.filter(closed=False, is_active=True)

    mails = list(Candidate.objects.values_list("email", flat=True))
    # Query the User model to check if any email is present
    existing_emails = list(
        User.objects.filter(username__in=mails).values_list("email", flat=True)
    )

    filter_obj = CandidateFilter(request.GET, queryset=candidates)
    if Candidate.objects.exists():
        template = "candidate/candidate_view.html"
    else:
        template = "candidate/candidate_empty.html"
    data_dict = parse_qs(previous_data)
    get_key_instances(Candidate, data_dict)

    # Store the candidates in the session
    request.session["filtered_candidates"] = [candidate.id for candidate in candidates]

    return render(
        request,
        template,
        {
            "data": paginator_qry(filter_obj.qs, request.GET.get("page")),
            "pd": previous_data,
            "f": filter_obj,
            "view_type": view_type,
            "filter_dict": data_dict,
            "gp_fields": CandidateReGroup.fields,
            "emp_list": existing_emails,
            "recruitments": recruitments,
        },
    )


@login_required
@hx_request_required
def interview_filter_view(request):
    """
    This method is used to filter Disciplinary Action.
    """

    previous_data = request.GET.urlencode()

    if request.user.has_perm("recruitment.view_interviewschedule"):
        interviews = InterviewSchedule.objects.all().order_by("-interview_date")
    else:
        interviews = InterviewSchedule.objects.filter(
            employee_id=request.user.employee_get.id
        ).order_by("-interview_date")

    if request.GET.get("sortby"):
        interviews = sortby(request, interviews, "sortby")

    dis_filter = InterviewFilter(request.GET, queryset=interviews).qs

    page_number = request.GET.get("page")
    page_obj = paginator_qry(dis_filter, page_number)
    data_dict = parse_qs(previous_data)
    get_key_instances(InterviewSchedule, data_dict)
    now = timezone.now()
    return render(
        request,
        "candidate/interview_list.html",
        {
            "data": page_obj,
            "pd": previous_data,
            "filter_dict": data_dict,
            "now": now,
        },
    )


@login_required
def interview_view(request):
    """
    This method render all interviews to the template
    """
    previous_data = request.GET.urlencode()

    if request.user.has_perm("recruitment.view_interviewschedule"):
        interviews = InterviewSchedule.objects.all().order_by("-interview_date")
    else:
        interviews = InterviewSchedule.objects.filter(
            employee_id=request.user.employee_get.id
        ).order_by("-interview_date")

    form = InterviewFilter(request.GET, queryset=interviews)
    page_number = request.GET.get("page")
    page_obj = paginator_qry(form.qs, page_number)
    previous_data = request.GET.urlencode()
    template = "candidate/interview_view.html"
    now = timezone.now()

    return render(
        request,
        template,
        {
            "data": page_obj,
            "pd": previous_data,
            "f": form,
            "now": now,
        },
    )


@login_required
@manager_can_enter(perm="recruitment.change_interviewschedule")
def interview_employee_remove(request, interview_id, employee_id):
    """
    This view is used to remove the employees from the meeting ,
    Args:
        interview_id(int) : primarykey of the interview.
        employee_id(int) : primarykey of the employee
    """
    interview = InterviewSchedule.objects.filter(id=interview_id).first()
    interview.employee_id.remove(employee_id)
    messages.success(request, "Interviewer removed succesfully.")
    interview.save()
    return HttpResponse("<script>$('.filterButton')[0].click()</script>")


@login_required
def candidate_export(request):
    """
    This method is used to Export candidate data
    """
    if request.META.get("HTTP_HX_REQUEST"):
        export_column = CandidateExportForm()
        export_filter = CandidateFilter()
        content = {
            "export_filter": export_filter,
            "export_column": export_column,
        }
        return render(request, "candidate/export_filter.html", context=content)
    return export_data(
        request=request,
        model=Candidate,
        filter_class=CandidateFilter,
        form_class=CandidateExportForm,
        file_name="Candidate_export",
    )


@login_required
@permission_required(perm="recruitment.view_candidate")
def candidate_view_list(request):
    """
    This method renders all candidate on candidate_list.html template
    """
    previous_data = request.GET.urlencode()
    candidates = Candidate.objects.all()
    if request.GET.get("is_active") is None:
        candidates = candidates.filter(is_active=True)
    candidates = CandidateFilter(request.GET, queryset=candidates).qs
    return render(
        request,
        "candidate/candidate_list.html",
        {
            "data": paginator_qry(candidates, request.GET.get("page")),
            "pd": previous_data,
        },
    )


@login_required
@hx_request_required
@permission_required(perm="recruitment.view_candidate")
def candidate_view_card(request):
    """
    This method renders all candidate on candidate_card.html template
    """
    previous_data = request.GET.urlencode()
    candidates = Candidate.objects.all()
    if request.GET.get("is_active") is None:
        candidates = candidates.filter(is_active=True)
    candidates = CandidateFilter(request.GET, queryset=candidates).qs
    return render(
        request,
        "candidate/candidate_card.html",
        {
            "data": paginator_qry(candidates, request.GET.get("page")),
            "pd": previous_data,
        },
    )


@login_required
@manager_can_enter(perm="recruitment.view_candidate")
def candidate_view_individual(request, cand_id, **kwargs):
    """
    This method is used to view profile of candidate.
    """
    candidate_obj = Candidate.find(cand_id)
    if not candidate_obj:
        messages.error(request, _("Candidate not found"))
        return HttpResponseRedirect(request.META.get("HTTP_REFERER", "/"))

    mails = list(Candidate.objects.values_list("email", flat=True))
    # Query the User model to check if any email is present
    existing_emails = list(
        User.objects.filter(username__in=mails).values_list("email", flat=True)
    )
    ratings = candidate_obj.candidate_rating.all()
    documents = CandidateDocument.objects.filter(candidate_id=cand_id)
    rating_list = []
    avg_rate = 0
    for rating in ratings:
        rating_list.append(rating.rating)
    if len(rating_list) != 0:
        avg_rate = round(sum(rating_list) / len(rating_list))

    # Retrieve the filtered candidate from the session
    filtered_candidate_ids = request.session.get("filtered_candidates", [])

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

    next_id = None
    previous_id = None

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

    now = timezone.now()

    return render(
        request,
        "candidate/individual.html",
        {
            "candidate": candidate_obj,
            "previous": previous_id,
            "next": next_id,
            "requests_ids": requests_ids,
            "emp_list": existing_emails,
            "average_rate": avg_rate,
            "documents": documents,
            "now": now,
        },
    )


@login_required
@manager_can_enter(
    perms=["recruitment.change_candidate", "onboarding.change_onboardingcandidate"]
)
def candidate_update(request, cand_id, **kwargs):
    """
    Used to update or change the candidate
    Args:
        id : candidate_id
    """
    try:
        candidate_obj = Candidate.objects.get(id=cand_id)
        form = CandidateCreationForm(instance=candidate_obj)
        path = "/recruitment/candidate-view"
        if request.method == "POST":
            form = CandidateCreationForm(
                request.POST, request.FILES, instance=candidate_obj
            )
            if form.is_valid():
                candidate_obj = form.save()
                if candidate_obj.stage_id is None:
                    candidate_obj.stage_id = Stage.objects.filter(
                        recruitment_id=candidate_obj.recruitment_id,
                        stage_type="initial",
                    ).first()
                if candidate_obj.stage_id is not None:
                    if (
                        candidate_obj.stage_id.recruitment_id
                        != candidate_obj.recruitment_id
                    ):
                        candidate_obj.stage_id = (
                            candidate_obj.recruitment_id.stage_set.filter(
                                stage_type="initial"
                            ).first()
                        )
                if request.GET.get("onboarding") == "True":
                    candidate_obj.hired = True
                    path = "/onboarding/candidates-view"
                candidate_obj.save()
                messages.success(request, _("Candidate Updated Successfully."))
                return redirect(path)
        return render(request, "candidate/candidate_create_form.html", {"form": form})
    except (Candidate.DoesNotExist, OverflowError):
        messages.error(request, _("Candidate Does not exists.."))
    return HttpResponseRedirect(request.META.get("HTTP_REFERER", "/"))


@transaction.atomic
@login_required
@manager_can_enter(perm="recruitment.change_candidate")
def candidate_conversion(request, cand_id, **kwargs):
    candidate_obj = Candidate.find(cand_id)

    if not candidate_obj:
        messages.error(request, ("Candidate not found"))
        return HttpResponseRedirect(request.META.get("HTTP_REFERER", "/"))

    if candidate_obj.converted_employee_id:
        messages.info(request, "This candidate is already converted to an employee.")
        return HttpResponseRedirect(request.META.get("HTTP_REFERER", "/"))

    user_exists = User.objects.filter(username=candidate_obj.email).exists()
    employee_exists = Employee.objects.filter(
        employee_user_id__username=candidate_obj.email
    ).exists()

    if user_exists:
        messages.error(request, ("User instance with this mail already exists"))
    elif not employee_exists:
        try:
            new_employee = Employee(
                employee_first_name=candidate_obj.name,
                email=candidate_obj.email,
                phone=candidate_obj.mobile,
                gender=candidate_obj.gender,
                is_directly_converted=True,
            )
            new_employee.save()

            work_info = new_employee.employee_work_info
            work_info.job_position_id = candidate_obj.job_position_id
            work_info.department_id = candidate_obj.job_position_id.department_id
            work_info.company_id = candidate_obj.recruitment_id.company_id
            work_info.save()

            Document.objects.bulk_create(
                [
                    Document(
                        title=doc.title,
                        employee_id=new_employee,
                        document=doc.document,
                        status=doc.status,
                        reject_reason=doc.reject_reason,
                    )
                    for doc in candidate_obj.candidatedocument_set.all()
                ]
            )

            candidate_obj.converted_employee_id = new_employee
            candidate_obj.save()
            messages.success(
                request,
                _("Candidate has been successfully converted into an employee."),
            )
        except IntegrityError:
            messages.warning(request, "An error occurred while creating employee data.")

    else:
        messages.info(request, "An employee with this email already exists")

    if "HTTP_HX_REQUEST" in request.META:
        return HttpResponse(status=204, headers={"HX-Refresh": "true"})

    return HttpResponseRedirect(request.META.get("HTTP_REFERER", "/"))


@login_required
@manager_can_enter(perm="recruitment.change_candidate")
def delete_profile_image(request, obj_id):
    """
    This method is used to delete the profile image of the candidate
    Args:
        obj_id : candidate instance id
    """
    candidate_obj = Candidate.objects.get(id=obj_id)
    try:
        if candidate_obj.profile:
            file_path = candidate_obj.profile.path
            absolute_path = os.path.join(settings.MEDIA_ROOT, file_path)
            os.remove(absolute_path)
            candidate_obj.profile = None
            candidate_obj.save()
            messages.success(request, _("Profile image removed."))
    except Exception as e:
        pass
    return redirect("rec-candidate-update", cand_id=obj_id)


@login_required
@permission_required(perm="recruitment.view_history")
def candidate_history(request, cand_id):
    """
    This method is used to view candidate stage changes
    Args:
        id : candidate_id
    """
    candidate_obj = Candidate.objects.get(id=cand_id)
    candidate_history_queryset = candidate_obj.history.all()
    return render(
        request,
        "candidate/candidate_history.html",
        {"history": candidate_history_queryset},
    )


@login_required
@hx_request_required
@manager_can_enter(perm="recruitment.change_candidate")
def form_send_mail(request, cand_id=None):
    """
    This method is used to render the bootstrap modal content body form
    """
    candidate_obj = None
    stage_id = None
    if request.GET.get("stage_id"):
        stage_id = eval_validate(request.GET.get("stage_id"))
    if cand_id:
        candidate_obj = Candidate.objects.get(id=cand_id)
    candidates = Candidate.objects.all()
    if stage_id and isinstance(stage_id, int):
        candidates = candidates.filter(stage_id__id=stage_id)
    else:
        stage_id = None

    templates = HorillaMailTemplate.objects.all()
    return render(
        request,
        "pipeline/pipeline_components/send_mail.html",
        {
            "cand": candidate_obj,
            "templates": templates,
            "candidates": candidates,
            "stage_id": stage_id,
            "searchWords": MailTemplateForm().get_template_language(),
        },
    )


@login_required
@hx_request_required
@manager_can_enter(perm="recruitment.add_interviewschedule")
def interview_schedule(request, cand_id):
    """
    This method is used to Schedule interview to candidate
    Args:
        cand_id : candidate instance id
    """
    candidate = Candidate.objects.get(id=cand_id)
    candidates = Candidate.objects.filter(id=cand_id)
    template = "pipeline/pipeline_components/schedule_interview.html"
    form = ScheduleInterviewForm(initial={"candidate_id": candidate})
    form.fields["candidate_id"].queryset = candidates
    if request.method == "POST":
        form = ScheduleInterviewForm(request.POST)
        if form.is_valid():
            form.save()
            emp_ids = form.cleaned_data["employee_id"]
            cand_id = form.cleaned_data["candidate_id"]
            interview_date = form.cleaned_data["interview_date"]
            interview_time = form.cleaned_data["interview_time"]
            users = [employee.employee_user_id for employee in emp_ids]
            notify.send(
                request.user.employee_get,
                recipient=users,
                verb=f"You are scheduled as an interviewer for an interview with {cand_id.name} on {interview_date} at {interview_time}.",
                verb_ar=f"أنت مجدول كمقابلة مع {cand_id.name} يوم {interview_date} في توقيت {interview_time}.",
                verb_de=f"Sie sind als Interviewer für ein Interview mit {cand_id.name} am {interview_date} um {interview_time} eingeplant.",
                verb_es=f"Estás programado como entrevistador para una entrevista con {cand_id.name} el {interview_date} a las {interview_time}.",
                verb_fr=f"Vous êtes programmé en tant qu'intervieweur pour un entretien avec {cand_id.name} le {interview_date} à {interview_time}.",
                icon="people-circle",
                redirect=reverse("interview-view"),
            )

            messages.success(request, "Interview Scheduled successfully.")
            return HttpResponse("<script>window.location.reload()</script>")
    return render(request, template, {"form": form, "cand_id": cand_id})


@login_required
@hx_request_required
@manager_can_enter(perm="recruitment.add_interviewschedule")
def create_interview_schedule(request):
    """
    This method is used to Schedule interview to candidate
    Args:
        cand_id : candidate instance id
    """
    candidates = Candidate.objects.all()
    template = "candidate/interview_form.html"
    form = ScheduleInterviewForm()
    form.fields["candidate_id"].queryset = candidates
    if request.method == "POST":
        form = ScheduleInterviewForm(request.POST)
        if form.is_valid():
            form.save()
            emp_ids = form.cleaned_data["employee_id"]
            cand_id = form.cleaned_data["candidate_id"]
            interview_date = form.cleaned_data["interview_date"]
            interview_time = form.cleaned_data["interview_time"]
            users = [employee.employee_user_id for employee in emp_ids]
            notify.send(
                request.user.employee_get,
                recipient=users,
                verb=f"You are scheduled as an interviewer for an interview with {cand_id.name} on {interview_date} at {interview_time}.",
                verb_ar=f"أنت مجدول كمقابلة مع {cand_id.name} يوم {interview_date} في توقيت {interview_time}.",
                verb_de=f"Sie sind als Interviewer für ein Interview mit {cand_id.name} am {interview_date} um {interview_time} eingeplant.",
                verb_es=f"Estás programado como entrevistador para una entrevista con {cand_id.name} el {interview_date} a las {interview_time}.",
                verb_fr=f"Vous êtes programmé en tant qu'intervieweur pour un entretien avec {cand_id.name} le {interview_date} à {interview_time}.",
                icon="people-circle",
                redirect=reverse("interview-view"),
            )

            messages.success(request, "Interview Scheduled successfully.")
    return render(request, template, {"form": form})


@login_required
@hx_request_required
@manager_can_enter(perm="recruitment.delete_interviewschedule")
def interview_delete(request, interview_id):
    """
    Deletes an interview schedule.
    Args:
        interview_id: InterviewSchedule instance ID
    """
    view = request.GET.get("view", "false")

    try:
        InterviewSchedule.objects.get(id=interview_id).delete()
        messages.success(request, _("Interview deleted successfully."))
    except:
        messages.error(request, _("Scheduled Interview not found"))

    return HttpResponse(
        "<script>$('.filterButton')[0].click()</script>"
        if view == "true"
        else "<script>window.location.reload()</script>"
    )


@login_required
@hx_request_required
@manager_can_enter(perm="recruitment.change_interviewschedule")
def interview_edit(request, interview_id):
    """
    This method is used to Edit Schedule interview
    Args:
        interview_id : interview schedule instance id
    """
    interview = InterviewSchedule.objects.get(id=interview_id)
    view = request.GET["view"]
    if view == "true":
        candidates = Candidate.objects.all()
        view = "true"
    else:
        candidates = Candidate.objects.filter(id=interview.candidate_id.id)
        view = "false"
    template = "pipeline/pipeline_components/schedule_interview_update.html"
    form = ScheduleInterviewForm(instance=interview)
    form.fields["candidate_id"].queryset = candidates
    if request.method == "POST":
        form = ScheduleInterviewForm(request.POST, instance=interview)
        if form.is_valid():
            emp_ids = form.cleaned_data["employee_id"]
            cand_id = form.cleaned_data["candidate_id"]
            interview_date = form.cleaned_data["interview_date"]
            interview_time = form.cleaned_data["interview_time"]
            form.save()
            users = [employee.employee_user_id for employee in emp_ids]
            notify.send(
                request.user.employee_get,
                recipient=users,
                verb=f"You are scheduled as an interviewer for an interview with {cand_id.name} on {interview_date} at {interview_time}.",
                verb_ar=f"أنت مجدول كمقابلة مع {cand_id.name} يوم {interview_date} في توقيت {interview_time}.",
                verb_de=f"Sie sind als Interviewer für ein Interview mit {cand_id.name} am {interview_date} um {interview_time} eingeplant.",
                verb_es=f"Estás programado como entrevistador para una entrevista con {cand_id.name} el {interview_date} a las {interview_time}.",
                verb_fr=f"Vous êtes programmé en tant qu'intervieweur pour un entretien avec {cand_id.name} le {interview_date} à {interview_time}.",
                icon="people-circle",
                redirect=reverse("interview-view"),
            )
            messages.success(request, "Interview updated successfully.")
            return HttpResponse("<script>window.location.reload()</script>")
    return render(
        request,
        template,
        {
            "form": form,
            "interview_id": interview_id,
            "view": view,
        },
    )


def get_managers(request):
    cand_id = request.GET.get("cand_id")
    candidate_obj = Candidate.objects.get(id=cand_id)
    stage_obj = Stage.objects.filter(recruitment_id=candidate_obj.recruitment_id.id)

    # Combine the querysets into a single iterable
    all_managers = chain(
        candidate_obj.recruitment_id.recruitment_managers.all(),
        *[stage.stage_managers.all() for stage in stage_obj],
    )

    # Extract unique managers from the combined iterable
    unique_managers = list(set(all_managers))

    # Assuming you have a list of employee objects called 'unique_managers'
    employees_dict = {
        employee.id: employee.get_full_name() for employee in unique_managers
    }
    return JsonResponse({"employees": employees_dict})


@login_required
@manager_can_enter(perm="recruitment.change_candidate")
def send_acknowledgement(request):
    """
    This method is used to send acknowledgement mail to the candidate
    """
    candidate_id = request.POST.get("id")
    subject = request.POST.get("subject")
    bdy = request.POST.get("body")
    candidate_ids = request.POST.getlist("candidates")
    candidates = Candidate.objects.filter(id__in=candidate_ids)

    other_attachments = request.FILES.getlist("other_attachments")

    if candidate_id:
        candidate_obj = Candidate.objects.filter(id=candidate_id)
    else:
        candidate_obj = Candidate.objects.none()
    candidates = (candidates | candidate_obj).distinct()

    template_attachment_ids = request.POST.getlist("template_attachments")
    for candidate in candidates:
        attachments = [
            (file.name, file.read(), file.content_type) for file in other_attachments
        ]
        bodys = list(
            HorillaMailTemplate.objects.filter(
                id__in=template_attachment_ids
            ).values_list("body", flat=True)
        )
        for html in bodys:
            # due to not having solid template we first need to pass the context
            template_bdy = template.Template(html)
            context = template.Context(
                {"instance": candidate, "self": request.user.employee_get}
            )
            render_bdy = template_bdy.render(context)
            attachments.append(
                (
                    "Document",
                    generate_pdf(render_bdy, {}, path=False, title="Document").content,
                    "application/pdf",
                )
            )

        template_bdy = template.Template(bdy)
        context = template.Context(
            {"instance": candidate, "self": request.user.employee_get}
        )
        render_bdy = template_bdy.render(context)
        to = candidate.email
        email = EmailMessage(
            subject=subject,
            body=render_bdy,
            to=[to],
        )
        email.content_subtype = "html"

        email.attachments = attachments
        try:
            email.send()
            messages.success(request, "Mail sent to candidate")
        except Exception as e:
            logger.exception(e)
            messages.error(request, "Something went wrong")
    return HttpResponse("<script>window.location.reload()</script>")


@login_required
@manager_can_enter(perm="recruitment.change_candidate")
def candidate_sequence_update(request):
    """
    This method is used to update the sequence of candidate
    """
    sequence_data = json.loads(request.POST["sequenceData"])
    for cand_id, seq in sequence_data.items():
        cand = Candidate.objects.get(id=cand_id)
        cand.sequence = seq
        cand.save()

    return JsonResponse({"message": "Sequence updated", "type": "info"})


@login_required
@recruitment_manager_can_enter(perm="recruitment.change_stage")
def stage_sequence_update(request):
    """
    This method is used to update the sequence of the stages
    """
    sequence_data = json.loads(request.POST["sequence"])
    for stage_id, seq in sequence_data.items():
        stage = Stage.objects.get(id=stage_id)
        stage.sequence = seq
        stage.save()
    return JsonResponse({"type": "success", "message": "Stage sequence updated"})


@login_required
def candidate_select(request):
    """
    This method is used for select all in candidate
    """
    page_number = request.GET.get("page")

    if page_number == "all":
        employees = Candidate.objects.filter(is_active=True)
    else:
        employees = Candidate.objects.all()

    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 candidate_select_filter(request):
    """
    This method is used to select all filtered candidates
    """
    page_number = request.GET.get("page")
    filtered = request.GET.get("filter")
    filters = json.loads(filtered) if filtered else {}

    if page_number == "all":
        candidate_filter = CandidateFilter(filters, queryset=Candidate.objects.all())

        # Get the filtered queryset
        filtered_candidates = candidate_filter.qs

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

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

        return JsonResponse(context)


@login_required
def create_candidate_rating(request, cand_id):
    """
    This method is used to create rating for the candidate
    Args:
        cand_id : candidate instance id
    """
    cand_id = cand_id
    candidate = Candidate.objects.get(id=cand_id)
    employee_id = request.user.employee_get
    rating = request.POST.get("rating")
    CandidateRating.objects.create(
        candidate_id=candidate, rating=rating, employee_id=employee_id
    )
    return redirect(recruitment_pipeline)


# ///////////////////////////////////////////////
# skill zone
# ///////////////////////////////////////////////


@login_required
@manager_can_enter(perm="recruitment.view_skillzone")
def skill_zone_view(request):
    """
    This method is used to show Skill zone view
    """
    candidates = SkillZoneCandFilter(request.GET).qs.filter(is_active=True)
    skill_groups = group_by_queryset(
        candidates,
        "skill_zone_id",
        request.GET.get("page"),
        "page",
    )

    all_zones = []
    for zone in skill_groups:
        all_zones.append(zone["grouper"])

    skill_zone_filtered = SkillZoneFilter(request.GET).qs.filter(is_active=True)
    all_zone_objects = list(skill_zone_filtered)
    unused_skill_zones = list(set(all_zone_objects) - set(all_zones))

    unused_zones = []
    for zone in unused_skill_zones:
        unused_zones.append(
            {
                "grouper": zone,
                "list": [],
                "dynamic_name": "",
            }
        )
    skill_groups = skill_groups.object_list + unused_zones
    skill_groups = paginator_qry(skill_groups, request.GET.get("page"))
    previous_data = request.GET.urlencode()
    data_dict = parse_qs(previous_data)
    get_key_instances(SkillZone, data_dict)
    if skill_groups.object_list:
        template = "skill_zone/skill_zone_view.html"
    else:
        template = "skill_zone/empty_skill_zone.html"

    context = {
        "pd": previous_data,
        "filter_dict": data_dict,
        "model": SkillZone(),
        "f": SkillZoneCandFilter(),
        "skill_zones": skill_groups,
        "page": request.GET.get("page"),
    }
    return render(request, template, context=context)


@login_required
@hx_request_required
@manager_can_enter(perm="recruitment.add_skillzone")
def skill_zone_create(request):
    """
    This method is used to create Skill zone.
    """
    form = SkillZoneCreateForm()
    if request.method == "POST":
        form = SkillZoneCreateForm(request.POST)
        if form.is_valid():
            form.save()
            messages.success(request, _("Skill Zone created successfully."))
            form = SkillZoneCreateForm()

    return render(
        request,
        "skill_zone/skill_zone_form.html",
        {"form": form},
    )


@login_required
@hx_request_required
@manager_can_enter(perm="recruitment.change_skillzone")
def skill_zone_update(request, sz_id):
    """
    This method is used to update Skill zone.
    """
    skill_zone = SkillZone.objects.get(id=sz_id)
    form = SkillZoneCreateForm(instance=skill_zone)
    if request.method == "POST":
        form = SkillZoneCreateForm(request.POST, instance=skill_zone)
        if form.is_valid():
            form.save()
            messages.success(request, _("Skill Zone updated successfully."))
    return render(
        request,
        "skill_zone/skill_zone_form.html",
        {"form": form, "sz_id": sz_id},
    )


@login_required
@manager_can_enter(perm="recruitment.delete_skillzone")
def skill_zone_delete(request, sz_id):
    """
    function used to delete Skill zone.

    Parameters:
    request (HttpRequest): The HTTP request object.
    sz_id : Skill zone id

    Returns:
    GET : return Skill zone view template
    """
    try:
        skill_zone = SkillZone.find(sz_id)
        if skill_zone:
            skill_zone.delete()
            messages.success(request, _("Skill zone deleted successfully.."))
        else:
            messages.error(request, _("Skill zone not found."))
    except ProtectedError:
        messages.error(request, _("Related entries exists"))
    return HttpResponse(
        "<script>$('.filterButton')[0].click();reloadMessage();</script>"
    )


@login_required
@manager_can_enter(perm="recruitment.change_skillzone")
def skill_zone_archive(request, sz_id):
    """
    function used to archive or un-archive Skill zone.

    Parameters:
    request (HttpRequest): The HTTP request object.
    sz_id : Skill zone id

    Returns:
    GET : return Skill zone view template
    """
    skill_zone = SkillZone.find(sz_id)
    if skill_zone:
        is_active = skill_zone.is_active
        if is_active == True:
            skill_zone.is_active = False
            skill_zone_candidates = SkillZoneCandidate.objects.filter(
                skill_zone_id=sz_id
            )
            for i in skill_zone_candidates:
                i.is_active = False
                i.save()
            messages.success(request, _("Skill zone archived successfully.."))
        else:
            skill_zone.is_active = True
            skill_zone_candidates = SkillZoneCandidate.objects.filter(
                skill_zone_id=sz_id
            )
            for i in skill_zone_candidates:
                i.is_active = True
                i.save()
            messages.success(request, _("Skill zone unarchived successfully.."))
        skill_zone.save()
    else:
        messages.error(request, _("Skill zone not found."))
    return redirect(skill_zone_view)


@login_required
@hx_request_required
@manager_can_enter(perm="recruitment.view_skillzone")
def skill_zone_filter(request):
    """
    This method is used to filter and show Skill zone view.
    """
    template = "skill_zone/skill_zone_list.html"
    if request.GET.get("view") == "card":
        template = "skill_zone/skill_zone_card.html"

    candidates = SkillZoneCandFilter(request.GET).qs
    skill_zone_filtered = SkillZoneFilter(request.GET).qs
    if request.GET.get("is_active") == "false":
        skill_zone_filtered = SkillZoneFilter(request.GET).qs.filter(is_active=False)
        candidates = SkillZoneCandFilter(request.GET).qs.filter(is_active=False)

    else:
        skill_zone_filtered = SkillZoneFilter(request.GET).qs.filter(is_active=True)
        candidates = SkillZoneCandFilter(request.GET).qs.filter(is_active=True)
    skill_groups = group_by_queryset(
        candidates,
        "skill_zone_id",
        request.GET.get("page"),
        "page",
    )
    all_zones = []
    for zone in skill_groups:
        all_zones.append(zone["grouper"])

    all_zone_objects = list(skill_zone_filtered)
    unused_skill_zones = list(set(all_zone_objects) - set(all_zones))

    unused_zones = []
    for zone in unused_skill_zones:
        unused_zones.append(
            {
                "grouper": zone,
                "list": [],
                "dynamic_name": "",
            }
        )
    skill_groups = skill_groups.object_list + unused_zones
    skill_groups = paginator_qry(skill_groups, request.GET.get("page"))
    previous_data = request.GET.urlencode()
    data_dict = parse_qs(previous_data)
    get_key_instances(SkillZone, data_dict)
    context = {
        "skill_zones": skill_groups,
        "pd": previous_data,
        "filter_dict": data_dict,
    }
    return render(
        request,
        template,
        context,
    )


@login_required
@manager_can_enter(perm="recruitment.view_skillzonecandidate")
def skill_zone_cand_card_view(request, sz_id):
    """
    This method is used to show Skill zone candidates.

    Parameters:
    request (HttpRequest): The HTTP request object.
    sz_cand_id : Skill zone id

    Returns:
    GET : return Skill zone candidate view template
    """
    skill_zone = SkillZone.objects.get(id=sz_id)
    template = "skill_zone_cand/skill_zone_cand_view.html"
    sz_candidates = SkillZoneCandidate.objects.filter(
        skill_zone_id=skill_zone, is_active=True
    )
    context = {
        "sz_candidates": paginator_qry(sz_candidates, request.GET.get("page")),
        "pd": request.GET.urlencode(),
        "sz_id": sz_id,
    }
    return render(request, template, context)


@login_required
@hx_request_required
@manager_can_enter(perm="recruitment.add_skillzonecandidate")
def skill_zone_candidate_create(request, sz_id):
    """
    This method is used to add candidates to a Skill zone.

    Parameters:
    request (HttpRequest): The HTTP request object.
    sz_cand_id : Skill zone id

    Returns:
    GET : return Skill zone candidate create template
    """
    skill_zone = SkillZone.objects.get(id=sz_id)
    template = "skill_zone_cand/skill_zone_cand_form.html"
    form = SkillZoneCandidateForm(initial={"skill_zone_id": skill_zone})
    if request.method == "POST":
        form = SkillZoneCandidateForm(request.POST)
        if form.is_valid():
            form.save()
            messages.success(request, _("Candidate added successfully."))
            return HttpResponse("<script>window.location.reload()</script>")

    return render(request, template, {"form": form, "sz_id": sz_id})


@login_required
@hx_request_required
@manager_can_enter(perm="recruitment.change_skillzonecandidate")
def skill_zone_cand_edit(request, sz_cand_id):
    """
    This method is used to edit candidates in a Skill zone.

    Parameters:
    request (HttpRequest): The HTTP request object.
    sz_cand_id : Skill zone candidate id

    Returns:
    GET : return Skill zone candidate edit template
    """
    skill_zone_cand = SkillZoneCandidate.objects.filter(id=sz_cand_id).first()
    template = "skill_zone_cand/skill_zone_cand_form.html"
    form = SkillZoneCandidateForm(instance=skill_zone_cand)
    if request.method == "POST":
        form = SkillZoneCandidateForm(request.POST, instance=skill_zone_cand)
        if form.is_valid():
            form.save()
            messages.success(request, _("Candidate edited successfully."))
            return HttpResponse("<script>window.location.reload()</script>")
    return render(request, template, {"form": form, "sz_cand_id": sz_cand_id})


@login_required
@manager_can_enter(perm="recruitment.delete_skillzonecandidate")
def skill_zone_cand_delete(request, sz_cand_id):
    """
    function used to delete Skill zone candidate.

    Parameters:
    request (HttpRequest): The HTTP request object.
    sz_cand_id : Skill zone candidate id

    Returns:
    GET : return Skill zone view template
    """

    try:
        SkillZoneCandidate.objects.get(id=sz_cand_id).delete()
        messages.success(request, _("Skill zone deleted successfully.."))
    except SkillZoneCandidate.DoesNotExist:
        messages.error(request, _("Skill zone not found."))
    except ProtectedError:
        messages.error(request, _("Related entries exists"))
    return redirect(skill_zone_view)


@login_required
@manager_can_enter(perm="recruitment.view_skillzonecandidate")
def skill_zone_cand_filter(request):
    """
    This method is used to filter the skill zone candidates
    """
    template = "skill_zone_cand/skill_zone_cand_card.html"
    if request.GET.get("view") == "list":
        template = "skill_zone_cand/skill_zone_cand_list.html"

    candidates = SkillZoneCandidate.objects.all()
    candidates_filter = SkillZoneCandFilter(request.GET, queryset=candidates).qs
    previous_data = request.GET.urlencode()
    data_dict = parse_qs(previous_data)
    get_key_instances(SkillZoneCandidate, data_dict)
    context = {
        "candidates": paginator_qry(candidates_filter, request.GET.get("page")),
        "pd": previous_data,
        "filter_dict": data_dict,
        "f": SkillZoneCandFilter(),
    }
    return render(
        request,
        template,
        context,
    )


@login_required
@manager_can_enter(perm="recruitment.delete_skillzonecandidate")
def skill_zone_cand_archive(request, sz_cand_id):
    """
    function used to archive or un-archive Skill zone candidate.

    Parameters:
    request (HttpRequest): The HTTP request object.
    sz_cand_id : Skill zone candidate id

    Returns:
    GET : return Skill zone candidate view template
    """
    try:
        skill_zone_cand = SkillZoneCandidate.objects.get(id=sz_cand_id)
        is_active = skill_zone_cand.is_active
        if is_active == True:
            skill_zone_cand.is_active = False
            messages.success(request, _("Candidate archived successfully.."))

        else:
            skill_zone_cand.is_active = True
            messages.success(request, _("Candidate unarchived successfully.."))

        skill_zone_cand.save()
    except SkillZone.DoesNotExist:
        messages.error(request, _("Candidate not found."))
    return redirect(skill_zone_view)


@login_required
@manager_can_enter(perm="recruitment.delete_skillzonecandidate")
def skill_zone_cand_delete(request, sz_cand_id):
    """
    function used to delete Skill zone candidate.

    Parameters:
    request (HttpRequest): The HTTP request object.
    sz_cand_id : Skill zone candidate id

    Returns:
    GET : return Skill zone view template
    """
    try:
        SkillZoneCandidate.objects.get(id=sz_cand_id).delete()
        messages.success(request, _("Candidate deleted successfully.."))
    except SkillZoneCandidate.DoesNotExist:
        messages.error(request, _("Candidate not found."))
    except ProtectedError:
        messages.error(request, _("Related entries exists"))
    return redirect(skill_zone_view)


@login_required
@hx_request_required
def to_skill_zone(request, cand_id):
    """
    This method is used to Add candidate into skill zone
    Args:
        cand_id : candidate instance id
    """
    if not (
        request.user.has_perm("recruitment.change_candidate")
        or request.user.has_perm("recruitment.add_skillzonecandidate")
    ):
        messages.info(request, "You dont have permission.")
        return HttpResponse("<script>window.location.reload()</script>")

    candidate = Candidate.objects.get(id=cand_id)
    template = "skill_zone_cand/to_skill_zone_form.html"
    form = ToSkillZoneForm(
        initial={
            "candidate_id": candidate,
            "skill_zone_ids": SkillZoneCandidate.objects.filter(
                candidate_id=candidate
            ).values_list("skill_zone_id", flat=True),
        }
    )
    if request.method == "POST":
        form = ToSkillZoneForm(request.POST)
        if form.is_valid():
            skill_zones = form.cleaned_data["skill_zone_ids"]
            for zone in skill_zones:
                if not SkillZoneCandidate.objects.filter(
                    candidate_id=candidate, skill_zone_id=zone
                ).exists():
                    zone_candidate = SkillZoneCandidate()
                    zone_candidate.candidate_id = candidate
                    zone_candidate.skill_zone_id = zone
                    zone_candidate.reason = form.cleaned_data["reason"]
                    zone_candidate.save()
            messages.success(request, "Candidate Added to skill zone successfully")
            return HttpResponse("<script>window.location.reload()</script>")
    return render(request, template, {"form": form, "cand_id": cand_id})


@login_required
def update_candidate_rating(request, cand_id):
    """
    This method is used to update the candidate rating
    Args:
        id : candidate rating instance id
    """
    cand_id = cand_id
    candidate = Candidate.objects.get(id=cand_id)
    employee_id = request.user.employee_get
    rating = request.POST.get("rating")
    rate = CandidateRating.objects.get(candidate_id=candidate, employee_id=employee_id)
    rate.rating = int(rating)
    rate.save()
    return redirect(recruitment_pipeline)


def open_recruitments(request):
    """
    This method is used to render the open recruitment page
    """
    recruitments = Recruitment.default.filter(
        closed=False, is_published=True, is_active=True
    )
    context = {
        "recruitments": recruitments,
    }
    response = render(request, "recruitment/open_recruitments.html", context)
    response["X-Frame-Options"] = "ALLOW-FROM *"

    return response


def recruitment_details(request, id):
    """
    This method is used to render the recruitment details page
    """
    recruitment = Recruitment.default.get(id=id)
    context = {
        "recruitment": recruitment,
    }
    return render(request, "recruitment/recruitment_details.html", context)


@login_required
@manager_can_enter("recruitment.view_candidate")
def get_mail_log(request):
    """
    This method is used to track mails sent along with the status
    """
    candidate_id = request.GET["candidate_id"]
    candidate = Candidate.objects.get(id=candidate_id)
    tracked_mails = EmailLog.objects.filter(to__icontains=candidate.email).order_by(
        "-created_at"
    )
    return render(request, "candidate/mail_log.html", {"tracked_mails": tracked_mails})


@login_required
@hx_request_required
@permission_required("recruitment.add_recruitmentgeneralsetting")
def candidate_self_tracking(request):
    """
    This method is used to update the recruitment general setting
    """
    settings = RecruitmentGeneralSetting.objects.first()
    settings = settings if settings else RecruitmentGeneralSetting()
    settings.candidate_self_tracking = "candidate_self_tracking" in request.GET.keys()
    settings.save()
    return HttpResponse("success")


@login_required
@hx_request_required
@permission_required("recruitment.add_recruitmentgeneralsetting")
def candidate_self_tracking_rating_option(request):
    """
    This method is used to enable/disable the selt tracking rating field
    """
    settings = RecruitmentGeneralSetting.objects.first()
    settings = settings if settings else RecruitmentGeneralSetting()
    settings.show_overall_rating = "candidate_self_tracking" in request.GET.keys()
    settings.save()
    return HttpResponse("success")


def candidate_login(request):
    if request.method == "POST":
        email = request.POST["email"]
        mobile = request.POST["phone"]

        backend = CandidateAuthenticationBackend()
        candidate = backend.authenticate(request, username=email, password=mobile)

        if candidate is not None:
            request.session["candidate_id"] = candidate.id
            request.session["candidate_email"] = candidate.email
            return redirect("candidate-self-status-tracking")
        else:
            return render(
                request, "candidate/self_login.html", {"error": "Invalid credentials"}
            )

    return render(request, "candidate/self_login.html")


def candidate_logout(request):
    """Logs out the candidate by clearing session data."""

    request.session.pop("candidate_id", None)
    request.session.pop("candidate_email", None)
    messages.success(request, "You have been logged out.")
    return redirect("candidate_login")


@candidate_login_required
def candidate_self_status_tracking(request):
    """
    This method is accessed by the candidates
    """
    self_tracking_feature = check_candidate_self_tracking(request)[
        "check_candidate_self_tracking"
    ]
    if self_tracking_feature:
        candidate_id = request.session.get("candidate_id")

        if not candidate_id:
            return redirect("candidate-login")

        candidate = Candidate.objects.get(pk=candidate_id)
        interviews = candidate.candidate_interview.annotate(
            is_today=Case(
                When(interview_date=date.today(), then=0),
                default=1,
                output_field=IntegerField(),
            )
        ).order_by("is_today", "-interview_date", "interview_time")
        return render(
            request,
            "candidate/candidate_self_tracking.html",
            {"candidate": candidate, "interviews": interviews},
        )
    return render(request, "404.html")


@login_required
@manager_can_enter("recruitment.add_candidate")
def candidate_self_status_tracking_managers_view(request, cand_id):
    """
    This method is accessed by the candidates
    """
    self_tracking_feature = check_candidate_self_tracking(request)[
        "check_candidate_self_tracking"
    ]
    if self_tracking_feature:
        candidate_id = request.session.get("candidate_id")
        if (
            request.user.has_perm("recruitment.view_candidate")
            or request.user.employee_get.recruitment_set.filter(
                candidate__id=cand_id
            ).exists()
            or request.user.employee_get.stage_set.filter(candidate=cand_id).exists()
        ):
            request.session["candidate_id"] = cand_id
            candidate_id = cand_id

        if not candidate_id:
            return redirect("candidate-login")

        candidate = Candidate.objects.get(pk=candidate_id)
        interviews = candidate.candidate_interview.annotate(
            is_today=Case(
                When(interview_date=date.today(), then=0),
                default=1,
                output_field=IntegerField(),
            )
        ).order_by("is_today", "-interview_date", "interview_time")

        return render(
            request,
            "candidate/candidate_self_tracking.html",
            {"candidate": candidate, "interviews": interviews},
        )
    return render(request, "404.html")


@login_required
@hx_request_required
@permission_required("recruitment.add_rejectreason")
def create_reject_reason(request):
    """
    This method is used to create/update the reject reasons
    """
    instance_id = eval_validate(str(request.GET.get("instance_id")))
    instance = None
    if instance_id:
        instance = RejectReason.objects.get(id=instance_id)
    form = RejectReasonForm(instance=instance)
    if request.method == "POST":
        form = RejectReasonForm(request.POST, instance=instance)
        if form.is_valid():
            form.save()
            messages.success(request, "Reject reason saved")
            return HttpResponse("<script>window.location.reload()</script>")
    return render(request, "settings/reject_reason_form.html", {"form": form})


@login_required
@permission_required("recruitment.view_recruitment")
def self_tracking_feature(request):
    """
    Recruitment optional feature for candidate self tracking
    """
    return render(request, "recruitment/settings/settings.html")


@login_required
@permission_required("recruitment.delete_rejectreason")
def delete_reject_reason(request):
    """
    This method is used to delete the reject reasons
    """
    ids = request.GET.getlist("ids")
    reasons = RejectReason.objects.filter(id__in=ids)
    for reason in reasons:
        reasons.delete()
        messages.success(request, f"{reason.title} is deleted.")
    return HttpResponseRedirect(request.META.get("HTTP_REFERER", "/"))


def extract_text_with_font_info(pdf):
    """
    This method is used to extract text from the pdf and create a list of dictionaries containing details about the extracted text.
    Args:
        pdf (): pdf file to extract text from
    """
    pdf_bytes = pdf.read()
    pdf_doc = io.BytesIO(pdf_bytes)
    doc = fitz.open("pdf", pdf_doc)
    text_info = []

    for page_num in range(len(doc)):
        page = doc[page_num]
        blocks = page.get_text("dict")["blocks"]
        for block in blocks:
            try:
                for line in block["lines"]:
                    for span in line["spans"]:
                        text_info.append(
                            {
                                "text": span["text"],
                                "font_size": span["size"],
                                "capitalization": sum(
                                    1 for c in span["text"] if c.isupper()
                                )
                                / len(span["text"]),
                            }
                        )
            except:
                pass

    return text_info


def rank_text(text_info):
    """
    This method is used to rank the text

    Args:
        text_info: List of dictionary containing the details

    Returns:
        Returns a sorted list
    """
    ranked_text = sorted(
        text_info, key=lambda x: (x["font_size"], x["capitalization"]), reverse=True
    )
    return ranked_text


def dob_matching(dob):
    """
    This method is used to change the date format to YYYY-MM-DD

    Args:
        dob: Date

    Returns:
        Return date in YYYY-MM-DD
    """
    date_formats = [
        "%Y-%m-%d",
        "%Y/%m/%d",
        "%d-%m-%Y",
        "%d/%m/%Y",
        "%Y.%m.%d",
        "%d.%m.%Y",
    ]

    for fmt in date_formats:
        try:
            parsed_date = datetime.strptime(dob, fmt)
            return parsed_date.strftime("%Y-%m-%d")
        except ValueError:
            continue

    return dob


def extract_info(pdf):
    """
    This method creates the contact information dictionary from the provided pdf file
    Args:
        pdf_file: pdf file
    """

    text_info = extract_text_with_font_info(pdf)
    ranked_text = rank_text(text_info)

    phone_pattern = re.compile(r"\b\+?\d{1,2}\s?\d{9,10}\b")
    dob_pattern = re.compile(
        r"\b(?:\d{1,2}|\d{4})[-/.,]\d{1,2}[-/.,](?:\d{1,2}|\d{4})\b"
    )
    email_pattern = re.compile(r"\b[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Z|a-z]{2,}\b")
    zip_code_pattern = re.compile(r"\b\d{5,6}(?:-\d{4})?\b")

    extracted_info = {
        "full_name": "",
        "address": "",
        "country": "",
        "state": "",
        "phone_number": "",
        "dob": "",
        "email_id": "",
        "zip": "",
    }

    name_candidates = [
        item["text"]
        for item in ranked_text
        if item["font_size"] == max(item["font_size"] for item in ranked_text)
    ]

    if name_candidates:
        extracted_info["full_name"] = " ".join(name_candidates)

    for item in ranked_text:
        text = item["text"]

        if not text:
            continue

        if not extracted_info["phone_number"]:
            phone_match = phone_pattern.search(text)
            if phone_match:
                extracted_info["phone_number"] = phone_match.group()

        if not extracted_info["dob"]:
            dob_match = dob_pattern.search(text)
            if dob_match:
                extracted_info["dob"] = dob_matching(dob_match.group())

        if not extracted_info["zip"]:
            zip_match = zip_code_pattern.search(text)
            if zip_match:
                extracted_info["zip"] = zip_match.group()

        if not extracted_info["email_id"]:
            email_match = email_pattern.search(text)
            if email_match:
                extracted_info["email_id"] = email_match.group()

        if "address" in text.lower() and not extracted_info["address"]:
            extracted_info["address"] = text.replace("Address:", "").strip()

        for item in text.split(" "):
            if item.capitalize() in country_arr:
                extracted_info["country"] = item

        for item in text.split(" "):
            if item.capitalize() in states:
                extracted_info["state"] = item

    return extracted_info


def resume_completion(request):
    """
    This function is returns the data for completing the candidate creation form
    """
    resume_file = request.FILES["resume"]
    contact_info = extract_info(resume_file)

    return JsonResponse(contact_info)


def check_vaccancy(request):
    """
    check vaccancy of recruitment
    """
    stage_id = request.GET.get("stageId")
    stage = Stage.objects.get(id=stage_id)
    message = "No message"
    if stage and stage.recruitment_id.is_vacancy_filled():
        message = _("Vaccancy is filled")
    return JsonResponse({"message": message})


@login_required
def skills_view(request):
    """
    This function is used to view skills page in settings
    """
    skills = Skill.objects.all()
    return render(request, "settings/skills/skills_view.html", {"skills": skills})


@login_required
def create_skills(request):
    """
    This method is used to create the skills
    """
    instance_id = eval_validate(str(request.GET.get("instance_id")))
    dynamic = request.GET.get("dynamic")
    hx_vals = request.GET.get("data")
    instance = None
    if instance_id:
        instance = Skill.objects.get(id=instance_id)
    form = SkillsForm(instance=instance)
    if request.method == "POST":
        form = SkillsForm(request.POST, instance=instance)
        if form.is_valid():
            form.save()
            messages.success(request, "Skill created successfully")

            if request.GET.get("dynamic") == "True":
                from django.urls import reverse

                url = reverse("recruitment-create")
                instance = Skill.objects.all().last()
                mutable_get = request.GET.copy()
                skills = mutable_get.getlist("skills")
                skills.remove("create")
                skills.append(str(instance.id))
                mutable_get["skills"] = skills[-1]
                skills.pop()
                data = mutable_get.urlencode()
                try:
                    for item in skills:
                        data += f"&skills={item}"
                except:
                    pass
                return redirect(f"{url}?{data}")

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

    context = {
        "form": form,
        "dynamic": dynamic,
        "hx_vals": hx_vals,
    }

    return render(request, "settings/skills/skills_form.html", context=context)


@login_required
@permission_required("recruitment.delete_rejectreason")
def delete_skills(request):
    """
    This method is used to delete the skills
    """
    ids = request.GET.getlist("ids")
    skills = Skill.objects.filter(id__in=ids)
    for skill in skills:
        skill.delete()
        messages.success(request, f"{skill.title} is deleted.")
    return HttpResponseRedirect(request.META.get("HTTP_REFERER", "/"))


@login_required
@hx_request_required
@manager_can_enter("recruitment.add_candidate")
def view_bulk_resumes(request):
    """
    This function returns the bulk_resume.html page to the modal
    """
    rec_id = eval_validate(str(request.GET.get("rec_id")))
    resumes = Resume.objects.filter(recruitment_id=rec_id)

    return render(
        request, "pipeline/bulk_resume.html", {"resumes": resumes, "rec_id": rec_id}
    )


@login_required
@hx_request_required
@manager_can_enter("recruitment.add_candidate")
def add_bulk_resumes(request):
    """
    This function is used to create bulk resume
    """
    rec_id = eval_validate(str(request.GET.get("rec_id")))
    recruitment = Recruitment.objects.get(id=rec_id)
    if request.method == "POST":
        files = request.FILES.getlist("files")
        for file in files:
            Resume.objects.create(
                file=file,
                recruitment_id=recruitment,
            )

        url = reverse("view-bulk-resume")
        query_params = f"?rec_id={rec_id}"

        return redirect(f"{url}{query_params}")


@login_required
@hx_request_required
@manager_can_enter("recruitment.add_candidate")
def delete_resume_file(request):
    """
    Used to delete resume
    """
    ids = request.GET.getlist("ids")
    rec_id = request.GET.get("rec_id")
    Resume.objects.filter(id__in=ids).delete()

    url = reverse("view-bulk-resume")
    query_params = f"?rec_id={rec_id}"

    return redirect(f"{url}{query_params}")


def extract_words_from_pdf(pdf_file):
    """
    This method is used to extract the words from the pdf file into a list.
    Args:
        pdf_file: pdf file

    """
    pdf_document = fitz.open(pdf_file.path)

    words = []

    for page_num in range(len(pdf_document)):
        page = pdf_document.load_page(page_num)
        page_text = page.get_text()

        page_words = re.findall(r"\b\w+\b", page_text.lower())

        words.extend(page_words)

    pdf_document.close()

    return words


@login_required
@hx_request_required
@manager_can_enter("recruitment.add_candidate")
def matching_resumes(request, rec_id):
    """
    This function returns the matching resume table after sorting the resumes according to their scores

    Args:
        rec_id: Recruitment ID

    """
    recruitment = Recruitment.objects.filter(id=rec_id).first()
    skills = recruitment.skills.values_list("title", flat=True)
    resumes = recruitment.resume.all()
    is_candidate = resumes.filter(is_candidate=True)
    is_candidate_ids = set(is_candidate.values_list("id", flat=True))

    resume_ranks = []
    for resume in resumes:
        words = extract_words_from_pdf(resume.file)
        matching_skills_count = sum(skill.lower() in words for skill in skills)

        item = {"resume": resume, "matching_skills_count": matching_skills_count}
        if not len(words):
            item["image_pdf"] = True

        resume_ranks.append(item)

    candidate_resumes = [
        rank for rank in resume_ranks if rank["resume"].id in is_candidate_ids
    ]
    non_candidate_resumes = [
        rank for rank in resume_ranks if rank["resume"].id not in is_candidate_ids
    ]

    non_candidate_resumes = sorted(
        non_candidate_resumes, key=lambda x: x["matching_skills_count"], reverse=True
    )
    candidate_resumes = sorted(
        candidate_resumes, key=lambda x: x["matching_skills_count"], reverse=True
    )

    ranked_resumes = non_candidate_resumes + candidate_resumes

    return render(
        request,
        "pipeline/matching_resumes.html",
        {
            "matched_resumes": ranked_resumes,
            "rec_id": rec_id,
        },
    )


@login_required
@manager_can_enter("recruitment.add_candidate")
def matching_resume_completion(request):
    """
    This function is returns the data for completing the candidate creation form
    """
    resume_id = request.GET.get("resume_id")
    resume_obj = get_object_or_404(Resume, id=resume_id)
    resume_file = resume_obj.file
    contact_info = extract_info(resume_file)

    return JsonResponse(contact_info)


@login_required
@permission_required("recruitment.view_rejectreason")
def candidate_reject_reasons(request):
    """
    This method is used to view all the reject reasons
    """
    reject_reasons = RejectReason.objects.all()
    return render(
        request, "settings/reject_reasons.html", {"reject_reasons": reject_reasons}
    )


@login_required
def hired_candidate_chart(request):
    """
    function used to show hired candidates in all recruitments.

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

    Returns:
    GET : return Json response labels, data, background_color, border_color.
    """
    labels = []
    data = []
    background_color = []
    border_color = []
    recruitments = Recruitment.objects.filter(closed=False, is_active=True)
    for recruitment in recruitments:
        red = random.randint(0, 255)
        green = random.randint(0, 255)
        blue = random.randint(0, 255)
        background_color.append(f"rgba({red}, {green}, {blue}, 0.2")
        border_color.append(f"rgb({red}, {green}, {blue})")
        labels.append(f"{recruitment}")
        data.append(recruitment.candidate.filter(hired=True).count())
    return JsonResponse(
        {
            "labels": labels,
            "data": data,
            "background_color": background_color,
            "border_color": border_color,
            "message": _("No records available at the moment."),
        },
        safe=False,
    )


@login_required
def candidate_document_request(request):
    """
    This function is used to create document requests of an employee in employee requests view.

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

    Returns: return document_request_create_form template
    """
    candidate_id = (
        request.GET.get("candidate_id") if request.GET.get("candidate_id") else None
    )
    form = CandidateDocumentRequestForm(initial={"candidate_id": candidate_id})
    if request.method == "POST":
        form = CandidateDocumentRequestForm(request.POST)
        if form.is_valid():
            form.save()
            messages.success(request, _("Document request created successfully"))
            return HttpResponse("<script>window.location.reload();</script>")

    context = {
        "form": form,
    }
    return render(
        request, "documents/document_request_create_form.html", context=context
    )


@login_required
@hx_request_required
def document_create(request, id):
    """
    This function is used to create documents from employee individual & profile view.

    Parameters:
    request (HttpRequest): The HTTP request object.
    emp_id (int): The id of the employee

    Returns: return document_tab template
    """
    candidate_id = Candidate.objects.get(id=id)
    form = CandidateDocumentForm(initial={"candidate_id": candidate_id})
    form.fields["candidate_id"].queryset = Candidate.objects.filter(id=id)
    if request.method == "POST":
        form = CandidateDocumentForm(request.POST, request.FILES)
        if form.is_valid():
            form.save()
            messages.success(request, _("Document created successfully."))
            return HttpResponse("<script>window.location.reload();</script>")

    context = {
        "form": form,
        "candidate_id": candidate_id,
    }
    return render(request, "candidate/document_create_form.html", context=context)


@login_required
def update_document_title(request, id):
    """
    This function is used to create documents from employee individual & profile view.

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

    Returns: return document_tab template
    """
    document = get_object_or_404(CandidateDocument, id=id)
    name = request.POST.get("title")
    if request.method == "POST":
        document.title = name
        document.save()

        return JsonResponse(
            {"success": True, "message": "Document title updated successfully"}
        )
    else:
        return JsonResponse(
            {"success": False, "message": "Invalid request"}, status=400
        )


@login_required
@hx_request_required
@manager_can_enter("recruitment.delete_candidatedocument")
def document_delete(request, id):
    """
    Handle the deletion of a document, with permissions and error handling.

    This view function attempts to delete a document specified by its ID.
    If the user does not have the "delete_document" permission, it restricts
    deletion to documents owned by the user. It provides appropriate success
    or error messages based on the outcome. If the document is protected and
    cannot be deleted, it handles the exception and informs the user.
    """
    try:
        document = CandidateDocument.objects.filter(id=id)
        if document:
            document.delete()
            messages.success(
                request,
                _(
                    f"Document request {document.first()} for {document.first().employee_id} deleted successfully"
                ),
            )
        else:
            messages.error(request, _("Document not found"))

    except ProtectedError:
        messages.error(request, _("You cannot delete this document."))

    if "HTTP_HX_TARGET" in request.META and request.META.get(
        "HTTP_HX_TARGET"
    ).startswith("document"):
        clear_messages(request)
        return HttpResponse()
    else:
        return HttpResponse("<script>window.location.reload();</script>")


@candidate_login_required
@hx_request_required
def file_upload(request, id):
    """
    This function is used to upload documents of an employee in employee individual & profile view.

    Parameters:
    request (HttpRequest): The HTTP request object.
    id (int): The id of the document.

    Returns: return document_form template
    """
    document_item = CandidateDocument.objects.get(id=id)
    form = CandidateDocumentUpdateForm(instance=document_item)
    if request.method == "POST":
        form = CandidateDocumentUpdateForm(
            request.POST, request.FILES, instance=document_item
        )
        if form.is_valid():
            form.save()
            messages.success(request, _("Document uploaded successfully"))
            return HttpResponse("<script>window.location.reload();</script>")

    context = {
        "form": form,
        "document": document_item,
    }
    return render(request, "candidate/document_form.html", context=context)


@candidate_login_required
@hx_request_required
def view_file(request, id):
    """
    This function used to view the uploaded document in the modal.
    Parameters:

    request (HttpRequest): The HTTP request object.
    id (int): The id of the document.

    Returns: return view_file template
    """
    document_obj = CandidateDocument.objects.filter(id=id).first()
    context = {
        "document": document_obj,
    }
    if document_obj.document:
        file_path = document_obj.document.path
        file_extension = os.path.splitext(file_path)[1][1:].lower()

        content_type = get_content_type(file_extension)

        try:
            with open(file_path, "rb") as file:
                file_content = file.read()
        except:
            file_content = None

        context["file_content"] = file_content
        context["file_extension"] = file_extension
        context["content_type"] = content_type

    return render(request, "candidate/view_file.html", context)


@login_required
@hx_request_required
@manager_can_enter("recruitment.change_candidatedocument")
def document_approve(request, id):
    """
    This function used to view the approve uploaded document.
    Parameters:

    request (HttpRequest): The HTTP request object.
    id (int): The id of the document.

    Returns:
    """
    document_obj = get_object_or_404(CandidateDocument, id=id)
    if document_obj.document:
        document_obj.status = "approved"
        document_obj.save()
        messages.success(request, _("Document request approved"))
    else:
        messages.error(request, _("No document uploaded"))

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


@login_required
@hx_request_required
@manager_can_enter("recruitment.change_candidatedocument")
def document_reject(request, id):
    """
    This function used to view the reject uploaded document.
    Parameters:

    request (HttpRequest): The HTTP request object.
    id (int): The id of the document.

    Returns:
    """
    document_obj = get_object_or_404(CandidateDocument, id=id)
    form = CandidateDocumentRejectForm()
    if document_obj.document:
        if request.method == "POST":
            form = CandidateDocumentRejectForm(request.POST, instance=document_obj)
            if form.is_valid():
                instance = form.save(commit=False)
                document_obj.reject_reason = instance.reject_reason
                document_obj.status = "rejected"
                document_obj.save()
                messages.error(request, _("Document request rejected"))

                return HttpResponse("<script>window.location.reload();</script>")
    else:
        messages.error(request, _("No document uploaded"))
        return HttpResponse("<script>window.location.reload();</script>")

    return render(
        request,
        "candidate/reject_form.html",
        {"form": form, "document_obj": document_obj},
    )


@candidate_login_required
def candidate_add_notes(request, cand_id):
    """
    This method renders template component to add candidate remark
    """

    candidate = Candidate.objects.get(id=cand_id)
    updated_by = request.user.employee_get if request.user.is_authenticated else None
    label = (
        request.user.employee_get.get_full_name()
        if request.user.is_authenticated
        else candidate.name
    )

    form = StageNoteForm(initial={"candidate_id": cand_id})
    if request.method == "POST":
        form = StageNoteForm(
            request.POST,
            request.FILES,
        )
        if form.is_valid():
            note, attachment_ids = form.save(commit=False)
            note.candidate_id = candidate
            note.stage_id = candidate.stage_id
            note.updated_by = updated_by
            note.candidate_can_view = True
            note.save()
            note.stage_files.set(attachment_ids)
            messages.success(request, _("Note added successfully.."))
            with contextlib.suppress(Exception):
                managers = candidate.recruitment_id.recruitment_managers.all()
                stage_managers = candidate.stage_id.stage_managers.all()

                all_managers = managers | stage_managers
                users = [
                    employee.employee_user_id for employee in all_managers.distinct()
                ]

                notify.send(
                    candidate,
                    label=label,
                    recipient=users,
                    verb=f"{label} has added a note on the candidate {candidate}",
                    verb_ar=f"أضاف {label} ملاحظة حول المرشح {candidate}",
                    verb_de=f"{label} hat dem {candidate} eine Notiz hinzugefügt.",
                    verb_es=f"{label} agregó una nota al {candidate}.",
                    verb_fr=f"{label} a ajouté une note à {candidate}.",
                    icon="people-circle",
                    redirect=reverse(
                        "candidate-view-individual", kwargs={"cand_id": cand_id}
                    ),
                )

    return render(
        request,
        "candidate/candidate_self_tracking.html",
        {
            "candidate": candidate,
            "note_form": form,
        },
    )


@login_required
@hx_request_required
def employee_profile_interview_tab(request):
    employee = request.user.employee_get

    interviews = employee.interviewschedule_set.annotate(
        is_today=Case(
            When(interview_date=date.today(), then=0),
            default=1,
            output_field=IntegerField(),
        )
    ).order_by("is_today", "-interview_date", "interview_time")

    return render(request, "tabs/scheduled_interview.html", {"interviews": interviews})