from django.contrib.auth.mixins import LoginRequiredMixin
from django.contrib.auth.models import AnonymousUser
from django.core.exceptions import PermissionDenied
from django.db.models import Q
from django.http import FileResponse
from django.shortcuts import redirect
from django.utils.translation import gettext_lazy as _
from django.views import View
from django.views.generic import CreateView, UpdateView, DetailView
from django_tables2 import SingleTableView

from tournament.views import AdminMixin
from .forms import SignUpForm, TFJMUserForm
from .models import TFJMUser, Document
from .tables import UserTable


class CreateUserView(CreateView):
    model = TFJMUser
    form_class = SignUpForm
    template_name = "registration/signup.html"


class MyAccountView(LoginRequiredMixin, UpdateView):
    model = TFJMUser
    form_class = TFJMUserForm
    template_name = "member/my_account.html"

    def get_object(self, queryset=None):
        return self.request.user


class UserDetailView(LoginRequiredMixin, DetailView):
    model = TFJMUser
    form_class = TFJMUserForm
    context_object_name = "tfjmuser"

    def dispatch(self, request, *args, **kwargs):
        if isinstance(request.user, AnonymousUser):
            raise PermissionDenied

        self.object = self.get_object()

        if not request.user.admin \
                and (self.object.team is not None and request.user not in self.object.team.tournament.organizers.all())\
                and self.request.user != self.object:
            raise PermissionDenied
        return super().dispatch(request, *args, **kwargs)

    def post(self, request, *args, **kwargs):
        if "view_as" in request.POST:
            session = request.session
            session["admin"] = request.user.pk
            obj = self.get_object()
            session["_fake_user_id"] = obj.pk
            return redirect(request.path)
        return self.get(request, *args, **kwargs)

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)

        context["title"] = str(self.object)

        return context


class DocumentView(LoginRequiredMixin, View):
    def get(self, request, *args, **kwargs):
        doc = Document.objects.get(file=self.kwargs["file"])

        if not request.user.admin:
            raise PermissionDenied

        return FileResponse(doc.file, content_type="application/pdf")


class ProfileListView(AdminMixin, SingleTableView):
    model = TFJMUser
    queryset = TFJMUser.objects.order_by("role", "last_name", "first_name")
    table_class = UserTable
    template_name = "member/profile_list.html"
    extra_context = dict(title=_("All profiles"))


class OrphanedProfileListView(AdminMixin, SingleTableView):
    model = TFJMUser
    queryset = TFJMUser.objects.filter((Q(role="2coach") | Q(role="3participant")) & Q(team__isnull=True))\
        .order_by("role", "last_name", "first_name")
    table_class = UserTable
    template_name = "member/profile_list.html"
    extra_context = dict(title=_("Orphaned profiles"))


class OrganizersListView(AdminMixin, SingleTableView):
    model = TFJMUser
    queryset = TFJMUser.objects.filter(Q(role="0admin") | Q(role="1volunteer"))\
        .order_by("role", "last_name", "first_name")
    table_class = UserTable
    template_name = "member/profile_list.html"
    extra_context = dict(title=_("Organizers"))


class ResetAdminView(AdminMixin, View):
    def dispatch(self, request, *args, **kwargs):
        if "_fake_user_id" in request.session:
            del request.session["_fake_user_id"]
        return redirect(request.GET["path"])