from rest_framework import status
from rest_framework.response import Response
from rest_framework.views import APIView

from game.models import Game, GameEvent, GameStatuses

from ..serializers import GameEventSerializer, GameSerializer


class GameResource(APIView):
    def post(self, request):
        """Creates a new game"""

        serializer = GameSerializer(data=request.data)
        if serializer.is_valid():
            serializer.save()
            return Response(serializer.data, status=status.HTTP_201_CREATED)
        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)


class GameSingleResource(APIView):
    def get(self, request, game_id):
        """Returns a game serialized or not found"""

        try:
            game = Game.objects.get(pk=game_id)
        except Game.DoesNotExist:
            return Response(status=status.HTTP_404_NOT_FOUND)

        serializer = GameSerializer(game)
        return Response(serializer.data, status=status.HTTP_200_OK)


class GameEventResource(APIView):
    def get(self, request, game_id):
        """Returns a list of all game events"""

        try:
            game = Game.objects.get(pk=game_id)
        except Game.DoesNotExist:
            return Response(status=status.HTTP_404_NOT_FOUND)

        events = GameEvent.objects.filter(game=game)
        serializer = GameEventSerializer(events, many=True)
        return Response(serializer.data)

    def post(self, request, game_id):
        """Creates a new event"""

        try:
            game = Game.objects.get(pk=game_id)
        except Game.DoesNotExist:
            return Response(status=status.HTTP_404_NOT_FOUND)

        if game.status == GameStatuses.FINISHED:
            return Response(
                {'message': 'Game is already finished'},
                status=status.HTTP_412_PRECONDITION_FAILED,
            )

        row = request.data.get('row')
        col = request.data.get('col')
        game_event = GameEvent.objects.filter(game=game, row=row, col=col).first()
        if game_event:
            return Response(
                {'message': 'This event was already registered'},
                status=status.HTTP_409_CONFLICT,
            )
        data = dict(request.data)
        data['game'] = game.pk

        serializer = GameEventSerializer(data=data)
        if serializer.is_valid():
            serializer.save()
            return Response(serializer.data, status=status.HTTP_201_CREATED)
        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)