// 目标接口
type Logger interface {
    Log(message string)
}

// 被适配者：旧日志系统
type OldLogger struct{}

func (o *OldLogger) S*eLog(data string) {
    fmt.Println("旧日志系统保存:", data)
}

// 适配器
type LoggerAdapter struct {
    oldLogger *OldLogger
}

func (a *LoggerAdapter) Log(message string) {
    a.oldLogger.S*eLog("[LOG] " + message)
}

oldLogger := &OldLogger{}
adapter := &LoggerAdapter{oldLogger: oldLogger}
adapter.Log("用户登录")
// 输出：旧日志系统保存: [LOG] 用户登录

// 统一支付接口
type Payment interface {
    Pay(amount float64) string
}

// 微信支付（第三方服务）
type WeChatPay struct{}

func (w *WeChatPay) SendPayment(money float64) string {
    return fmt.Sprintf("微信支付 %.2f 元成功", money)
}

// 支付宝支付
type AliPay struct{}

func (a *AliPay) MakePayment(value float64) string {
    return fmt.Sprintf("支付宝支付 %.2f 元成功", value)
}

// 微信适配器
type WeChatAdapter struct {
    weChat *WeChatPay
}

func (w *WeChatAdapter) Pay(amount float64) string {
    return w.weChat.SendPayment(amount)
}

// 支付宝适配器
type AliPayAdapter struct {
    aliPay *AliPay
}

func (a *AliPayAdapter) Pay(amount float64) string {
    return a.aliPay.MakePayment(amount)
}

payments := []Payment{
    &WeChatAdapter{weChat: &WeChatPay{}},
    &AliPayAdapter{aliPay: &AliPay{}},
}

for _, p := range payments {
    fmt.Println(p.Pay(99.5))
}

func (a *LoggerAdapter) Log(message string) {
    timestamp := time.Now().Format("2006-01-02 15:04:05")
    logEntry := fmt.Sprintf("[%s][%s] %s", timestamp, "INFO", message)
    a.oldLogger.S*eLog(logEntry)
}