import structlog
from rest_framework.decorators import api_view
from rest_framework.response import Response

from vbv_lernwelt.completion.models import LearningContentCompletion, UserCircleCompletion
from vbv_lernwelt.completion.serializers import UserCircleCompletionSerializer, LearningContentCompletionSerializer
from vbv_lernwelt.learnpath.models import LearningContent

logger = structlog.get_logger(__name__)


@api_view(['GET'])
def request_user_circle_completion(request, circle_key):
    ucc = UserCircleCompletion.objects.filter(
        user=request.user,
        circle_key=circle_key,
    )

    response_data = {}
    if ucc.count() > 0:
        response_data = UserCircleCompletionSerializer(ucc.first()).data

    response_data['completed_learning_contents'] = LearningContentCompletionSerializer(
        LearningContentCompletion.objects.filter(circle_key=circle_key, user=request.user),
        many=True
    ).data

    return Response(status=200, data=response_data)


@api_view(['POST'])
def complete_learning_content(request):
    learning_content_key = request.data.get('learning_content_key')
    completed = request.data.get('completed', True)
    learning_content = LearningContent.objects.get(translation_key=learning_content_key)

    circle_key = learning_content.get_parent().translation_key

    lcc, created = LearningContentCompletion.objects.get_or_create(
        user=request.user,
        learning_content_key=learning_content_key,
        circle_key=circle_key,
    )
    lcc.completed = completed
    lcc.save()

    ucc, created = UserCircleCompletion.objects.get_or_create(
        user=request.user,
        circle_key=circle_key,
    )

    response_data = UserCircleCompletionSerializer(ucc).data
    response_data['completed_learning_contents'] = LearningContentCompletionSerializer(
        LearningContentCompletion.objects.filter(circle_key=circle_key, user=request.user),
        many=True
    ).data

    logger.debug(
        'learning content completed',
        label='completion_api',
        circle_key=circle_key,
        learning_content_key=learning_content_key,
        user_id=request.user.id,
    )

    return Response(status=200, data=response_data)