from rest_framework.viewsets import ViewSet
from rest_framework.decorators import action
from rest_framework.response import Response
from rest_framework import status
from datetime import datetime
from django.conf import settings
from rest_framework_simplejwt.tokens import RefreshToken

class AuthBaseViewSet(ViewSet):
    """Базовый класс для аутентификации с общими методами"""
    
    def _set_auth_cookies(self, response, refresh):
        """Устанавливает куки для токенов аутентификации"""
        response.set_cookie(
            'access_token',
            str(refresh.access_token),
            httponly=True,
            secure=True,
            samesite='Lax',
            max_age=300
        )
        response.set_cookie(
            'refresh_token',
            str(refresh),
            httponly=True,
            secure=True,
            samesite='Lax',
            max_age=86400
        )
        return response

    @action(detail=False, methods=['post'], url_path="refresh")
    def refresh_token(self, request):
        try:
            refresh_token = request.data.get('refresh')
            
            if not refresh_token:
                return Response(
                    {'error': 'Refresh token is required'}, 
                    status=status.HTTP_400_BAD_REQUEST
                )

            try:
                token = RefreshToken(refresh_token)
                response_data = {
                    'access': str(token.access_token),
                    'refresh': str(token),
                    'expires_at': datetime.timestamp(
                        datetime.now() + settings.SIMPLE_JWT['ACCESS_TOKEN_LIFETIME']
                    )
                }
                
                return Response(response_data)
                
            except Exception as e:      
                return Response(
                    {'error': f'Invalid refresh token: {str(e)}'}, 
                    status=status.HTTP_400_BAD_REQUEST
                )

        except Exception as e:
            return Response(
                {'error': f'Token refresh failed: {str(e)}'}, 
                status=status.HTTP_400_BAD_REQUEST
            )