package database

import (
	"fmt"
	
	"gorm.io/driver/mysql"
	"gorm.io/gorm"
	
	"newaterobot-process/config"
)

var DB *gorm.DB

// InitDB 初始化数据库连接
func InitDB() error {
	mysqlConfig := config.GlobalConfig.MySQL
	
	// 构建DSN
	dsn := fmt.Sprintf("%s:%s@tcp(%s:%d)/%s?charset=%s&parseTime=%t&loc=%s",
		mysqlConfig.Username,
		mysqlConfig.Password,
		mysqlConfig.Host,
		mysqlConfig.Port,
		mysqlConfig.Dbname,
		mysqlConfig.Charset,
		mysqlConfig.ParseTime,
		mysqlConfig.Loc)

	var err error
	DB, err = gorm.Open(mysql.Open(dsn), &gorm.Config{})
	if err != nil {
		return fmt.Errorf("failed to connect to database: %v", err)
	}

	return nil
}