from django.shortcuts import render, get_object_or_404
from django.http import HttpResponse
from django.utils.encoding import force_str
from django.utils.http import urlsafe_base64_encode, urlsafe_base64_decode
from django.urls import reverse
from tournaments.models.court import Court
from tournaments.models.date_interval import DateInterval

from .tokens import account_activation_token

from tournaments.models import group_stage
from .serializers import ClubSerializer, CourtSerializer, DateIntervalSerializer, TournamentSerializer, UserSerializer, ChangePasswordSerializer, EventSerializer, RoundSerializer, GroupStageSerializer, MatchSerializer, TeamScoreSerializer, TeamRegistrationSerializer, PlayerRegistrationSerializer, LiveMatchSerializer, PurchaseSerializer
from .models import Club, Tournament, CustomUser, Event, Round, GroupStage, Match, TeamScore, TeamRegistration, PlayerRegistration, Purchase
from .models import TeamSummon
from datetime import datetime
import datetime

from rest_framework import viewsets, permissions
from rest_framework.authtoken.models import Token
from rest_framework.response import Response
from rest_framework.decorators import api_view
from rest_framework import status
from rest_framework.generics import UpdateAPIView
from rest_framework.exceptions import MethodNotAllowed
from rest_framework.permissions import IsAuthenticated
from django.template import loader
from datetime import date
from django.http import JsonResponse
from django.db.models import Q
import json

from qr_code.qrcode.utils import QRCodeOptions

def index(request):

    today = date.today()

    club_id = request.GET.get('club')
    q_is_private = Q(is_private=False)

    q_future = [q_is_private, Q(end_date__isnull=True, start_date__gt=today)]
    q_live = [q_is_private, Q(end_date__isnull=True, start_date__lte=today)]
    q_ended = [q_is_private, Q(end_date__isnull=False)]

    club = None
    if club_id:
        club = get_object_or_404(Club, pk=club_id)

        q_club = Q(event__club=club)
        q_future.append(q_club)
        q_live.append(q_club)
        q_ended.append(q_club)

    future_tournaments = Tournament.objects.filter(*q_future).order_by('start_date')
    live_tournaments = Tournament.objects.filter(*q_live).order_by('start_date')
    ended_tournaments = Tournament.objects.filter(*q_ended).order_by('start_date')
    return render(
        request,
        "tournaments/tournaments.html",
        {
            'future': future_tournaments,
            'live': live_tournaments,
            'ended': ended_tournaments,
            'club': club,
        }
    )

def clubs(request):
    clubs = Club.objects.all().order_by('name')
    return render(request, 'tournaments/clubs.html', {
        'clubs': clubs,
    })

def club(request, club_id):
    club = get_object_or_404(Club, pk=club_id)
    return render(request, 'tournaments/summons.html', {
        'tournament': tournament,
        'team_summons': team_summons,
    })

def tournament(request, tournament_id):

    tournament = get_object_or_404(Tournament, pk=tournament_id)

    round_id = request.GET.get('round')
    group_stage_id = request.GET.get('group_stage')
    match_groups = tournament.match_groups(False, group_stage_id, round_id)

    rounds = tournament.round_set.filter(parent=None).order_by('-index')
    group_stages = tournament.groupstage_set.order_by('index')

    return render(request, 'tournaments/matches.html', {
        'tournament': tournament,
        'rounds': rounds,
        'group_stages': group_stages,
        'match_groups': match_groups,
    })

def tournament_summons(request, tournament_id):

    tournament = get_object_or_404(Tournament, pk=tournament_id)
    team_summons = tournament.team_summons()

    return render(request, 'tournaments/summons.html', {
        'tournament': tournament,
        'team_summons': team_summons,
    })

def tournament_broadcasted_summons(request, tournament_id):
    tournament = get_object_or_404(Tournament, pk=tournament_id)
    return render(request, 'tournaments/broadcasted_summons.html', {
        'tournament': tournament,
        'qr_code_url': qr_code_url(request, tournament_id),
        'qr_code_options': qr_code_options(),
    })

def tournament_summons_json(request, tournament_id):
    tournament = get_object_or_404(Tournament, pk=tournament_id)
    team_summons = [summon.to_dict() for summon in tournament.team_summons()]
    data = json.dumps(team_summons)
    return HttpResponse(data, content_type='application/json')

def tournament_broadcast_home(request, tournament_id):
    tournament = get_object_or_404(Tournament, pk=tournament_id)
    return render(request, 'tournaments/broadcast.html', {
        'tournament': tournament,
        'qr_code_url': qr_code_url(request, tournament_id),
        'qr_code_options': qr_code_options(),
    })

def automatic_broadcast(request, tournament_id):
    tournament = get_object_or_404(Tournament, pk=tournament_id)
    return render(request, 'tournaments/broadcasted_auto.html', {
        'tournament': tournament,
        'qr_code_url': qr_code_url(request, tournament_id),
        'qr_code_options': qr_code_options(),
    })

def qr_code_url(request, tournament_id):
    qr_code_url = reverse('tournament', args=[tournament_id])
    return request.build_absolute_uri(qr_code_url)

def qr_code_options():
    return QRCodeOptions(size=10, border=4, error_correction='L')

def tournament_matches(request, tournament_id):
    tournament = get_object_or_404(Tournament, pk=tournament_id)
    return render(request, 'tournaments/broadcasted_matches.html', {
        'tournament': tournament,
        'qr_code_url': qr_code_url(request, tournament_id),
        'qr_code_options': qr_code_options(),
    })

def broadcast_json(request, tournament_id):
    tournament = get_object_or_404(Tournament, pk=tournament_id)
    broadcast = tournament.broadcast_content()
    data = json.dumps(broadcast)
    return HttpResponse(data, content_type='application/json')

def tournament_matches_json(request, tournament_id):
    tournament = get_object_or_404(Tournament, pk=tournament_id)
    matches, group_stages = tournament.broadcasted_matches_and_group_stages()
    live_matches = [match.live_match() for match in matches]

    data = json.dumps(live_matches, default=vars)
    return HttpResponse(data, content_type='application/json')

def tournament_group_stages(request, tournament_id):
    tournament = get_object_or_404(Tournament, pk=tournament_id)
    live_group_stages = list(tournament.live_group_stages())
    return render(request, 'tournaments/group_stages.html', {
        'tournament': tournament,
        'group_stages': live_group_stages,
    })

def tournament_broadcasted_group_stages(request, tournament_id):
    tournament = get_object_or_404(Tournament, pk=tournament_id)
    return render(request, 'tournaments/broadcasted_group_stages.html', {
        'tournament': tournament,
        'qr_code_url': qr_code_url(request, tournament_id),
        'qr_code_options': qr_code_options(),
    })

def tournament_live_group_stage_json(request, tournament_id):
    tournament = get_object_or_404(Tournament, pk=tournament_id)

    gs_dicts = [gs.to_dict() for gs in tournament.live_group_stages()]
    # group_stages = tournament.live_group_stages()
    data = json.dumps(gs_dicts)
    return HttpResponse(data, content_type='application/json')

def players(request):
    return render(request, 'tournaments/test.html')

def activate(request, uidb64, token):
    try:
        uid = force_str(urlsafe_base64_decode(uidb64))
        user = CustomUser.objects.get(pk=uid)
    except(TypeError, ValueError, OverflowError, CustomUser.DoesNotExist):
        user = None
    if user is not None and account_activation_token.check_token(user, token):
        user.is_active = True
        user.save()
        return HttpResponse('Thank you for your email confirmation. Now you can login your account.')
    else:
        return HttpResponse('Activation link is invalid!')

##### API #####

@api_view(['GET'])
def user_by_token(request):
    # return Response({"message": "Hello for today! See you tomorrow!"})
    # key = request.data['token']
    # token = Token.objects.get(key=key)
    # user = CustomUser.objects.get(username=token.user)
    serializer = UserSerializer(request.user)
    return Response(serializer.data, status=status.HTTP_200_OK)

class UserViewSet(viewsets.ModelViewSet):
    queryset = CustomUser.objects.all()
    serializer_class = UserSerializer

class ClubViewSet(viewsets.ModelViewSet):
    queryset = Club.objects.all()
    serializer_class = ClubSerializer
    permission_classes = []

class TournamentViewSet(viewsets.ModelViewSet):
    queryset = Tournament.objects.all()
    serializer_class = TournamentSerializer

class PurchaseViewSet(viewsets.ModelViewSet):
    queryset = Purchase.objects.all()
    serializer_class = PurchaseSerializer

    def get_queryset(self):
        if self.request.user:
            return self.queryset.filter(user=self.request.user)
        return []

    def put(self, request, pk):
        raise MethodNotAllowed('PUT')

    def patch(self, request, pk):
        raise MethodNotAllowed('PATCH')

    def delete(self, request, pk):
        raise MethodNotAllowed('DELETE')

# class ExpandedTournamentViewSet(viewsets.ModelViewSet):
#     queryset = Tournament.objects.all()
#     serializer_class = ExpandedTournamentSerializer

class ChangePasswordView(UpdateAPIView):
    serializer_class = ChangePasswordSerializer

    def update(self, request, *args, **kwargs):
        serializer = self.get_serializer(data=request.data)
        serializer.is_valid(raise_exception=True)
        user = serializer.save()
        # if using drf authtoken, create a new token
        if hasattr(user, 'auth_token'):
            user.auth_token.delete()
        token, created = Token.objects.get_or_create(user=user)
        # return new token
        return Response({'token': token.key}, status=status.HTTP_200_OK)

class EventViewSet(viewsets.ModelViewSet):
    queryset = Event.objects.all()
    serializer_class = EventSerializer

    def get_queryset(self):
        if self.request.user.is_anonymous:
            return []
        return self.queryset.filter(creator=self.request.user)

class RoundViewSet(viewsets.ModelViewSet):
    queryset = Round.objects.all()
    serializer_class = RoundSerializer

class GroupStageViewSet(viewsets.ModelViewSet):
    queryset = GroupStage.objects.all()
    serializer_class = GroupStageSerializer

class MatchViewSet(viewsets.ModelViewSet):
    queryset = Match.objects.all()
    serializer_class = MatchSerializer

class TeamScoreViewSet(viewsets.ModelViewSet):
    queryset = TeamScore.objects.all()
    serializer_class = TeamScoreSerializer

class TeamRegistrationViewSet(viewsets.ModelViewSet):
    queryset = TeamRegistration.objects.all()
    serializer_class = TeamRegistrationSerializer

class PlayerRegistrationViewSet(viewsets.ModelViewSet):
    queryset = PlayerRegistration.objects.all()
    serializer_class = PlayerRegistrationSerializer

class CourtViewSet(viewsets.ModelViewSet):
    queryset = Court.objects.all()
    serializer_class = CourtSerializer

class DateIntervalViewSet(viewsets.ModelViewSet):
    queryset = DateInterval.objects.all()
    serializer_class = DateIntervalSerializer