import logging, os
from urllib.parse import urlencode
from django.http import HttpResponse, HttpResponseRedirect
from django.shortcuts import redirect
from django.urls import reverse
from django.utils.translation import gettext as _
from base.models import MultipleApprovalManagers
from employee.models import Employee, EmployeeWorkInformation
from django.contrib import messages
from django.shortcuts import render
from horilla.settings import TEMPLATES, BASE_DIR
from horilla import settings
from base.models import BiometricAttendance


logger = logging.getLogger(__name__)

TEMPLATES[0]["DIRS"] = [os.path.join(BASE_DIR, "templates")]

decorator_with_arguments = (
    lambda decorator: lambda *args, **kwargs: lambda func: decorator(
        func, *args, **kwargs
    )
)


def check_manager(employee, instance):
    try:
        if isinstance(instance, Employee):
            return instance.employee_work_info.reporting_manager_id == employee
        return employee == instance.employee_id.employee_work_info.reporting_manager_id
    except:
        return False


@decorator_with_arguments
def permission_required(function, perm):
    def _function(request, *args, **kwargs):
        if request.user.has_perm(perm):
            return function(request, *args, **kwargs)
        else:
            messages.info(request, "You dont have permission.")
            previous_url = request.META.get("HTTP_REFERER", "/")
            key = "HTTP_HX_REQUEST"
            if key in request.META.keys():
                return render(request, "decorator_404.html")
            script = f'<script>window.location.href = "{previous_url}"</script>'
            return HttpResponse(script)

    return _function


decorator_with_arguments = (
    lambda decorator: lambda *args, **kwargs: lambda func: decorator(
        func, *args, **kwargs
    )
)


@decorator_with_arguments
def delete_permission(function):
    def _function(request, *args, **kwargs):
        user = request.user
        employee = user.employee_get
        is_manager = EmployeeWorkInformation.objects.filter(
            reporting_manager_id=employee
        ).exists()
        if (
            request.user.has_perm(
                kwargs["model"]._meta.app_label
                + ".delete_"
                + kwargs["model"]._meta.model_name
            )
            or is_manager
        ):
            return function(request, *args, **kwargs)
        else:
            messages.info(request, "You dont have permission for delete.")
            previous_url = request.META.get("HTTP_REFERER", "/")
            key = "HTTP_HX_REQUEST"
            if key in request.META.keys():
                return render(request, "decorator_404.html")
            script = f'<script>window.location.href = "{previous_url}"</script>'
            return HttpResponse(script)

    return _function


decorator_with_arguments = (
    lambda decorator: lambda *args, **kwargs: lambda func: decorator(
        func, *args, **kwargs
    )
)


@decorator_with_arguments
def duplicate_permission(function):
    def _function(request, *args, **kwargs):
        user = request.user
        employee = user.employee_get
        is_manager = EmployeeWorkInformation.objects.filter(
            reporting_manager_id=employee
        ).exists()

        app_label = kwargs["model"]._meta.app_label
        model_name = kwargs["model"]._meta.model_name
        obj_id = kwargs["obj_id"]
        object_instance = kwargs["model"].objects.filter(pk=obj_id).first()
        try:
            if object_instance.employee_id == employee:
                return function(request, *args, **kwargs)
        except:
            pass
        permission = f"{app_label}.add_{model_name}"
        if request.user.has_perm(permission) or is_manager:
            return function(request, *args, **kwargs)
        else:
            messages.info(request, "You dont have permission for duplicate action.")
            previous_url = request.META.get("HTTP_REFERER", "/")
            key = "HTTP_HX_REQUEST"
            if key in request.META.keys():
                return render(request, "decorator_404.html")
            script = f'<script>window.location.href = "{previous_url}"</script>'
            return HttpResponse(script)

    return _function


decorator_with_arguments = (
    lambda decorator: lambda *args, **kwargs: lambda func: decorator(
        func, *args, **kwargs
    )
)


@decorator_with_arguments
def manager_can_enter(function, perm):
    """
    This method is used to check permission to employee for enter to the function if the employee
    do not have permission also checks, has reporting manager.
    """

    def _function(request, *args, **kwargs):
        leave_perm = [
            "leave.view_leaverequest",
            "leave.change_leaverequest",
            "leave.delete_leaverequest",
        ]
        user = request.user
        employee = user.employee_get
        if perm in leave_perm:
            is_approval_manager = MultipleApprovalManagers.objects.filter(
                employee_id=employee.id
            ).exists()
            if is_approval_manager:
                return function(request, *args, **kwargs)
        is_manager = EmployeeWorkInformation.objects.filter(
            reporting_manager_id=employee
        ).exists()
        if user.has_perm(perm) or is_manager:
            return function(request, *args, **kwargs)
        else:
            messages.info(request, "You dont have permission.")
            previous_url = request.META.get("HTTP_REFERER", "/")
            script = f'<script>window.location.href = "{previous_url}"</script>'
            key = "HTTP_HX_REQUEST"
            if key in request.META.keys():
                return render(request, "decorator_404.html")
            return HttpResponse(script)

    return _function


def login_required(view_func):
    def wrapped_view(request, *args, **kwargs):
        path = request.path
        res = path.split("/", 2)[1].capitalize().replace("-", " ").upper()
        if res == "PMS":
            res = "Performance"
        request.session["title"] = res
        if path == "" or path == "/":
            request.session["title"] = "Dashboard".upper()
        if not request.user.is_authenticated:
            login_url = reverse("login")
            params = urlencode(request.GET)
            url = f"{login_url}?next={request.path}"
            if params:
                url += f"&{params}"
            return redirect(url)
        try:
            func = view_func(request, *args, **kwargs)
        except Exception as e:
            logger.exception(e)
            if not settings.DEBUG:
                return render(request, "went_wrong.html")
            return view_func(request, *args, **kwargs)
        return func

    return wrapped_view


def hx_request_required(view_func):
    def wrapped_view(request, *args, **kwargs):
        key = "HTTP_HX_REQUEST"
        if key not in request.META.keys():
            return HttpResponse("method not allowed...")
        return view_func(request, *args, **kwargs)

    return wrapped_view


@decorator_with_arguments
def owner_can_enter(function, perm: str, model: object, manager_access=False):
    """
    Only the users with permission, or the owner, or employees manager can enter,
    If manager_access:True then all the managers can enter
    """

    def _function(request, *args, **kwargs):
        instance_id = kwargs[list(kwargs.keys())[0]]
        if model == Employee:
            employee = Employee.objects.get(id=instance_id)
        else:
            employee = model.objects.get(id=instance_id).employee_id
        can_enter = (
            request.user.employee_get == employee
            or request.user.has_perm(perm)
            or check_manager(request.user.employee_get, employee)
            or (
                EmployeeWorkInformation.objects.filter(
                    reporting_manager_id__employee_user_id=request.user
                ).exists()
                if manager_access
                else False
            )
        )
        if can_enter:
            return function(request, *args, **kwargs)
        return render(request, "no_perm.html")

    return _function


def install_required(function):
    def _function(request, *args, **kwargs):
        object = BiometricAttendance.objects.all().first()
        if object.is_installed:
            return function(request, *args, **kwargs)
        else:
            messages.info(
                request,
                _(
                    "Please activate the biometric attendance feature in the settings menu."
                ),
            )
            return HttpResponseRedirect(request.META.get("HTTP_REFERER", "/"))

    return _function