Facade 패턴을 사용하여 Golang의 복잡한 로직을 우아하게 캡슐화합니다.

type UserManager struct {}

func (um *UserManager) Register(username, password string) {
    // 注册逻辑
}

func (um *UserManager) Login(username, password string) {
    // 登录逻辑
}

func (um *UserManager) GetUserInfo(username string) {
    // 查询用户信息逻辑
}

type ProductManager struct {}

func (pm *ProductManager) AddProduct(name, price string) {
    // 添加商品逻辑
}

func (pm *ProductManager) UpdateProduct(name, price string) {
    // 修改商品逻辑
}

func (pm *ProductManager) DeleteProduct(name string) {
    // 删除商品逻辑
}

type OrderManager struct {}

func (om *OrderManager) CreateOrder(username string) {
    // 创建订单逻辑
}

func (om *OrderManager) PayOrder(username, orderId string) {
    // 支付订单逻辑
}

func (om *OrderManager) CancelOrder(username, orderId string) {
    // 取消订单逻辑
}

type Facade struct {
    UserManager    *UserManager
    ProductManager *ProductManager
    OrderManager   *OrderManager
}

func NewFacade() *Facade {
    return &Facade{
        UserManager:    &UserManager{},
        ProductManager: &ProductManager{},
        OrderManager:   &OrderManager{},
    }
}

func (f *Facade) Register(username, password string) {
    f.UserManager.Register(username, password)
}

func (f *Facade) Login(username, password string) {
    f.UserManager.Login(username, password)
}

func (f *Facade) GetUserInfo(username string) {
    f.UserManager.GetUserInfo(username)
}

func (f *Facade) AddProduct(name, price string) {
    f.ProductManager.AddProduct(name, price)
}

func (f *Facade) UpdateProduct(name, price string) {
    f.ProductManager.UpdateProduct(name, price)
}

func (f *Facade) DeleteProduct(name string) {
    f.ProductManager.DeleteProduct(name)
}

func (f *Facade) CreateOrder(username string) {
    f.OrderManager.CreateOrder(username)
}

func (f *Facade) PayOrder(username, orderId string) {
    f.OrderManager.PayOrder(username, orderId)
}

func (f *Facade) CancelOrder(username, orderId string) {
    f.OrderManager.CancelOrder(username, orderId)
}

func main() {
    facade := NewFacade()
    
    facade.Register("user1", "password1")
    facade.Login("user1", "password1")
    facade.GetUserInfo("user1")
    
    facade.AddProduct("product1", "100.00")
    facade.UpdateProduct("product1", "200.00")
    facade.DeleteProduct("product1")
    
    facade.CreateOrder("user1")
    facade.PayOrder("user1", "order1")
    facade.CancelOrder("user1", "order1")
}