from django.contrib.auth import get_user_model

from rest_framework import status
from rest_framework import viewsets
from rest_framework.decorators import detail_route, list_route
from rest_framework.response import Response

from . import ExtendedModelViewSet

from .serializers.course import (
    CategorySerializer, LikeSerializer,
    CourseSerializer, CourseCreateSerializer,
    MaterialSerializer, MaterialCreateSerializer,
    LessonSerializer, LessonCreateSerializer,
)
from .serializers.content import (
    ImageSerializer, ImageCreateSerializer,
    TextSerializer, TextCreateSerializer,
    ImageTextSerializer, ImageTextCreateSerializer,
    VideoSerializer, VideoCreateSerializer,
    GallerySerializer,
    GalleryImageSerializer, GalleryImageCreateSerializer,
    ImageObjectSerializer,
)
from .serializers.user import (
    UserSerializer, UserPhotoSerializer,
)

from .permissions import IsAdmin, IsAdminOrIsSelf, IsAuthorOrAdmin, IsAuthorObjectOrAdmin

from apps.course.models import Category, Course, Material, Lesson, Like
from apps.content.models import (
    Image, Text, ImageText, Video,
    Gallery, GalleryImage, ImageObject,
)

User = get_user_model()


class ImageObjectViewSet(ExtendedModelViewSet):
    queryset = ImageObject.objects.all()
    serializer_class = ImageObjectSerializer
    # permission_classes = (IsAuthorOrAdmin,)


class MaterialViewSet(ExtendedModelViewSet):
    queryset = Material.objects.all()
    serializer_class = MaterialCreateSerializer
    serializer_class_map = {
        'list': MaterialSerializer,
        'retrieve': MaterialSerializer,
    }
    search_fields = ('title', 'short_description',)
    ordering_fields = ('title', 'created_at', 'update_at',)
    # permission_classes = (IsAdmin,)


class LikeViewSet(ExtendedModelViewSet):
    queryset = Like.objects.select_related('user').all()
    serializer_class = LikeSerializer
    search_fields = ('user__email', 'user__firstname', 'user__lastname',)
    ordering_fields = ('created_at', 'update_at',)
    # permission_classes = (IsAdmin,)


class CategoryViewSet(ExtendedModelViewSet):
    queryset = Category.objects.all()
    serializer_class = CategorySerializer
    search_fields = ('title',)
    ordering_fields = ('title',)
    # permission_classes = (IsAdmin,)


class CourseViewSet(ExtendedModelViewSet):
    queryset = Course.objects.select_related(
        'author', 'category', 'cover', 'gallery',
    ).prefetch_related(
        'likes', 'materials', 'content',
    ).all()
    serializer_class = CourseCreateSerializer
    serializer_class_map = {
        'list': CourseSerializer,
        'retrieve': CourseSerializer,
    }
    filter_fields = ('category', 'status', 'is_infinite', 'is_featured',)
    search_fields = ('author__email', 'title', 'category__title',)
    ordering_fields = ('title', 'created_at', 'update_at',)
    # permission_classes = (IsAuthorObjectOrAdmin,)
    # permission_map = {
    #     'create': IsAuthorOrAdmin,
    #     'delete': IsAdmin,
    # }


class LessonViewSet(ExtendedModelViewSet):
    queryset = Lesson.objects.select_related(
        'course', 'cover'
    ).prefetch_related('content').all()
    serializer_class = LessonCreateSerializer
    serializer_class_map = {
        'list': LessonSerializer,
        'retrieve': LessonSerializer,
    }
    filter_fields = ('course',)
    search_fields = ('title', 'short_description',)
    ordering_fields = ('title', 'created_at', 'update_at',)
    # permission_classes = (IsAuthorObjectOrAdmin,)
    # permission_map = {
    #     'create': IsAuthorOrAdmin,
    #     'delete': IsAdmin,
    # }


class ImageViewSet(ExtendedModelViewSet):
    queryset = Image.objects.select_related(
        'course', 'lesson', 'img',
    ).all()
    serializer_class = ImageCreateSerializer
    serializer_class_map = {
        'list': ImageSerializer,
        'retrieve': ImageSerializer,
    }
    search_fields = ('title',)
    ordering_fields = ('title', 'created_at', 'update_at', 'position',)
    # permission_classes = (IsAuthorOrAdmin,)
    # permission_map = {
    #     'delete': IsAdmin,
    # }


class TextViewSet(ExtendedModelViewSet):
    queryset = Text.objects.select_related(
        'course', 'lesson'
    ).all()
    serializer_class = TextCreateSerializer
    serializer_class_map = {
        'list': TextSerializer,
        'retrieve': TextSerializer,
    }
    search_fields = ('title',)
    ordering_fields = ('title', 'created_at', 'update_at', 'position',)
    # permission_classes = (IsAuthorOrAdmin,)
    # permission_map = {
    #     'delete': IsAdmin,
    # }


class ImageTextViewSet(ExtendedModelViewSet):
    queryset = ImageText.objects.select_related(
        'course', 'lesson', 'img'
    ).all()
    serializer_class = ImageTextCreateSerializer
    serializer_class_map = {
        'list': ImageTextSerializer,
        'retrieve': ImageTextSerializer,
    }
    search_fields = ('title',)
    ordering_fields = ('title', 'created_at', 'update_at', 'position',)
    # permission_classes = (IsAuthorOrAdmin,)
    # permission_map = {
    #     'delete': IsAdmin,
    # }


class VideoViewSet(ExtendedModelViewSet):
    queryset = Video.objects.select_related(
        'course', 'lesson'
    ).all()
    serializer_class = VideoCreateSerializer
    serializer_class_map = {
        'list': VideoSerializer,
        'retrieve': VideoSerializer,
    }
    search_fields = ('title',)
    ordering_fields = ('title', 'created_at', 'update_at', 'position',)
    # permission_classes = (IsAuthorOrAdmin,)
    # permission_map = {
    #     'delete': IsAdmin,
    # }


class GalleryViewSet(ExtendedModelViewSet):
    queryset = Gallery.objects.all()
    serializer_class = GallerySerializer
    search_fields = ('title',)
    ordering_fields = ('title', 'created_at', 'update_at',)
    # permission_classes = (IsAuthorOrAdmin,)
    # permission_map = {
    #     'delete': IsAdmin,
    # }


class GalleryImageViewSet(ExtendedModelViewSet):
    queryset = GalleryImage.objects.select_related(
        'gallery', 'img',
    ).all()
    serializer_class = GalleryImageCreateSerializer
    search_fields = ('gallery__title',)
    serializer_class_map = {
        'list': GalleryImageSerializer,
        'retrieve': GalleryImageSerializer,
    }
    # permission_classes = (IsAuthorOrAdmin,)
    # permission_map = {
    #     'delete': IsAdmin,
    # }


class UserViewSet(ExtendedModelViewSet):
    queryset = User.objects.all()
    serializer_class = UserSerializer
    serializer_class_map = {
        'upload_photo': UserPhotoSerializer,
    }
    filter_fields = ('is_staff', 'is_active', 'role',
                     'gender', 'is_email_proved', 'fb_id',)
    search_fields = ('email', 'first_name', 'last_name',
                     'country', 'city', 'fb_id',)
    ordering_fields = ('email', 'first_name', 'last_name',
                       'country', 'city', 'date_joined',)

    # permission_classes = (IsAdminOrIsSelf,)
    # permission_map = {
    #     'delete': IsAdmin,
    # }

    @list_route(methods=['get'])
    def me(self, request):
        serializer = self.get_serializer_class()
        serialized_data = serializer(instance=request.user)
        return Response(serialized_data.data)

    @detail_route(methods=['post'], url_path='upload-photo')
    def upload_photo(self, request, pk=None):
        user = self.get_object()
        serializer = self.get_serializer()
        serialized_data = serializer(data=request.data)
        if serialized_data.is_valid():
            user.photo = serialized_data['photo']
            user.save()
            return Response({'success': True})
        else:
            return Response({'success': False}, status=status.HTTP_400_BAD_REQUEST)