package main

import (
	"database/sql"
	"fmt"
	"log"

	"git.x2erp.com/qdy/go-db/factory"
)

func main() {
	// 创建数据库工厂
	dbFactory, err := factory.NewDBFactory()
	if err != nil {
		log.Fatalf("Failed to create DB factory: %v", err)
	}

	// 显示可用的数据库驱动
	drivers := dbFactory.GetAvailableDrivers()
	fmt.Printf("Available database drivers: %v\n", drivers)

	// 显示当前使用的数据库配置
	config := dbFactory.GetConfig()
	dbConfig := config.GetDatabase() // 通过接口方法获取数据库配置
	fmt.Printf("Using database type: %s\n", dbConfig.Type)
	fmt.Printf("Database host: %s:%d\n", dbConfig.Host, dbConfig.Port)
	fmt.Printf("Database name: %s\n", dbConfig.Database)

	// 创建数据库连接
	db, err := dbFactory.CreateDB()
	if err != nil {
		log.Fatalf("Failed to create database connection: %v", err)
	}
	defer db.Close()

	fmt.Println("Successfully connected to database!")

	// 测试连接
	if err := testConnection(db, dbConfig.Type); err != nil {
		log.Printf("Query test failed: %v", err)
	} else {
		fmt.Println("Database connection test passed!")
	}
}

func testConnection(db *sql.DB, dbType string) error {
	var query string
	switch dbType {
	case "mysql", "postgres", "sqlserver":
		query = "SELECT 1"
	case "oracle":
		query = "SELECT 1 FROM DUAL"
	default:
		query = "SELECT 1"
	}

	var result int
	err := db.QueryRow(query).Scan(&result)
	if err != nil {
		return fmt.Errorf("test query failed: %v", err)
	}

	if result != 1 {
		return fmt.Errorf("unexpected test result: %d", result)
	}

	return nil
}