import abc
from rest_framework.generics import ListAPIView

from assets.models import Asset, Node
from assets.api.asset.asset import AssetFilterSet
from perms import serializers
from perms.pagination import AllPermedAssetPagination
from perms.pagination import NodePermedAssetPagination
from perms.utils import UserPermAssetUtil
from common.utils import get_logger, lazyproperty

from .mixin import (
    SelfOrPKUserMixin
)


__all__ = [
    'UserAllPermedAssetsApi',
    'UserDirectPermedAssetsApi',
    'UserFavoriteAssetsApi',
    'UserPermedNodeAssetsApi',
]

logger = get_logger(__name__)


class BaseUserPermedAssetsApi(SelfOrPKUserMixin, ListAPIView):
    ordering = ('name',)
    ordering_fields = ("name", "address")
    search_fields = ('name', 'address', 'comment')
    filterset_class = AssetFilterSet
    serializer_class = serializers.AssetPermedSerializer
    only_fields = serializers.AssetPermedSerializer.Meta.only_fields

    def get_queryset(self):
        if getattr(self, 'swagger_fake_view', False):
            return Asset.objects.none()
        assets = self.get_assets()
        assets = assets.prefetch_related('platform').only(*self.only_fields)
        return assets

    @abc.abstractmethod
    def get_assets(self):
        return Asset.objects.none()

    query_asset_util: UserPermAssetUtil

    @lazyproperty
    def query_asset_util(self):
        return UserPermAssetUtil(self.user)


class UserAllPermedAssetsApi(BaseUserPermedAssetsApi):
    pagination_class = AllPermedAssetPagination

    def get_assets(self):
        return self.query_asset_util.get_all_assets()


class UserDirectPermedAssetsApi(BaseUserPermedAssetsApi):
    def get_assets(self):
        return self.query_asset_util.get_direct_assets()


class UserFavoriteAssetsApi(BaseUserPermedAssetsApi):
    def get_assets(self):
        return self.query_asset_util.get_favorite_assets()


class UserPermedNodeAssetsApi(BaseUserPermedAssetsApi):
    pagination_class = NodePermedAssetPagination
    pagination_node: Node

    def get_assets(self):
        node_id = self.kwargs.get("node_id")
        node, assets = self.query_asset_util.get_node_all_assets(node_id)
        self.pagination_node = node
        return assets