from django.shortcuts import get_object_or_404
from rest_framework.decorators import action
from rest_framework.generics import CreateAPIView, ListAPIView
from rest_framework.response import Response

from assets.models import Asset
from accounts import serializers
from accounts.models import Account
from accounts.filters import AccountFilterSet
from accounts.tasks import verify_accounts_connectivity
from authentication.const import ConfirmType
from common.permissions import UserConfirmation
from common.views.mixins import RecordViewLogMixin
from orgs.mixins.api import OrgBulkModelViewSet

__all__ = [
    'AccountViewSet', 'AccountSecretsViewSet', 'AccountTaskCreateAPI', 'AccountHistoriesSecretAPI'
]

from rbac.permissions import RBACPermission


class AccountViewSet(OrgBulkModelViewSet):
    model = Account
    search_fields = ('username', 'asset__address', 'name')
    filterset_class = AccountFilterSet
    serializer_classes = {
        'default': serializers.AccountSerializer,
    }
    rbac_perms = {
        'verify_account': 'assets.test_account',
        'partial_update': 'assets.change_accountsecret',
        'su_from_accounts': 'assets.view_account',
    }

    @action(methods=['get'], detail=False, url_path='su-from-accounts')
    def su_from_accounts(self, request, *args, **kwargs):
        account_id = request.query_params.get('account')
        asset_id = request.query_params.get('asset')
        if account_id:
            account = get_object_or_404(Account, pk=account_id)
            accounts = account.get_su_from_accounts()
        elif asset_id:
            asset = get_object_or_404(Asset, pk=asset_id)
            accounts = asset.accounts.all()
        else:
            accounts = []
        serializer = serializers.AccountSerializer(accounts, many=True)
        return Response(data=serializer.data)

    @action(methods=['post'], detail=True, url_path='verify')
    def verify_account(self, request, *args, **kwargs):
        account = super().get_object()
        account_ids = [account.id]
        asset_ids = [account.asset_id]
        task = verify_accounts_connectivity.delay(account_ids, asset_ids)
        return Response(data={'task': task.id})


class AccountSecretsViewSet(RecordViewLogMixin, AccountViewSet):
    """
    因为可能要导出所有账号，所以单独建立了一个 viewset
    """
    serializer_classes = {
        'default': serializers.AccountSecretSerializer,
    }
    http_method_names = ['get', 'options']
    permission_classes = [RBACPermission, UserConfirmation.require(ConfirmType.MFA)]
    rbac_perms = {
        'list': 'assets.view_accountsecret',
        'retrieve': 'assets.view_accountsecret',
    }


class AccountHistoriesSecretAPI(RecordViewLogMixin, ListAPIView):
    model = Account.history.model
    serializer_class = serializers.AccountHistorySerializer
    http_method_names = ['get', 'options']
    permission_classes = [RBACPermission, UserConfirmation.require(ConfirmType.MFA)]
    rbac_perms = {
        'list': 'assets.view_accountsecret',
    }

    def get_queryset(self):
        return self.model.objects.filter(id=self.kwargs.get('pk'))


class AccountTaskCreateAPI(CreateAPIView):
    serializer_class = serializers.AccountTaskSerializer
    search_fields = AccountViewSet.search_fields
    filterset_class = AccountViewSet.filterset_class

    def check_permissions(self, request):
        return request.user.has_perm('assets.test_assetconnectivity')

    def get_accounts(self):
        queryset = Account.objects.all()
        queryset = self.filter_queryset(queryset)
        return queryset

    def perform_create(self, serializer):
        accounts = self.get_accounts()
        account_ids = accounts.values_list('id', flat=True)
        asset_ids = [account.asset_id for account in accounts]
        task = verify_accounts_connectivity.delay(account_ids, asset_ids)
        data = getattr(serializer, '_data', {})
        data["task"] = task.id
        setattr(serializer, '_data', data)
        return task

    def get_exception_handler(self):
        def handler(e, context):
            return Response({"error": str(e)}, status=400)

        return handler