//
//  Copyright 2026 The InfiniFlow Authors. All Rights Reserved.
//
//  Licensed under the Apache License, Version 2.0 (the "License");
//  you may not use this file except in compliance with the License.
//  You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
//  Unless required by applicable law or agreed to in writing, software
//  distributed under the License is distributed on an "AS IS" BASIS,
//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//  See the License for the specific language governing permissions and
//  limitations under the License.
//

package service

import (
	"ragflow/internal/dao"
)

// ConnectorService connector service
type ConnectorService struct {
	connectorDAO  *dao.ConnectorDAO
	userTenantDAO *dao.UserTenantDAO
}

// NewConnectorService create connector service
func NewConnectorService() *ConnectorService {
	return &ConnectorService{
		connectorDAO:  dao.NewConnectorDAO(),
		userTenantDAO: dao.NewUserTenantDAO(),
	}
}

// ListConnectorsResponse list connectors response
type ListConnectorsResponse struct {
	Connectors []*dao.ConnectorListItem `json:"connectors"`
}

// ListConnectors list connectors for a user
// Equivalent to Python's ConnectorService.list(current_user.id)
func (s *ConnectorService) ListConnectors(userID string) (*ListConnectorsResponse, error) {
	// Get tenant IDs by user ID
	tenantIDs, err := s.userTenantDAO.GetTenantIDsByUserID(userID)
	if err != nil {
		return nil, err
	}

	// For now, use the first tenant ID (primary tenant)
	// This matches the Python implementation behavior
	var tenantID string
	if len(tenantIDs) > 0 {
		tenantID = tenantIDs[0]
	} else {
		tenantID = userID
	}

	// Query connectors by tenant ID
	connectors, err := s.connectorDAO.ListByTenantID(tenantID)
	if err != nil {
		return nil, err
	}

	return &ListConnectorsResponse{
		Connectors: connectors,
	}, nil
}