cls/internal/domain/payment/entity.go

package payment

import "time"

// PaymentType 支付类型
type PaymentType int

const (
	PaymentTypeWechat PaymentType = iota + 1 // 微信支付
	PaymentTypeAlipay                        // 支付宝支付
)

// PaymentStatus 支付状态
type PaymentStatus int

const (
	PaymentStatusPending  PaymentStatus = iota + 1 // 待支付
	PaymentStatusSuccess                           // 支付成功
	PaymentStatusFailed                            // 支付失败
	PaymentStatusRefunded                          // 已退款
)

// Payment 支付订单实体
type Payment struct {
	ID            uint64        `gorm:"primarykey" json:"id"`       // 支付ID
	OrderNo       string        `gorm:"uniqueIndex" json:"orderNo"` // 订单编号
	TransactionID string        `json:"transactionId"`              // 第三方交易号
	UserID        uint64        `json:"userId"`                     // 用户ID
	TargetID      uint64        `json:"targetId"`                   // 商品ID
	Type          PaymentType   `json:"type"`                       // 支付类型
	Amount        int64         `json:"amount"`                     // 支付金额
	Status        PaymentStatus `json:"status"`                     // 支付状态
	Description   string        `json:"description"`                // 支付描述
	NotifyData    string        `json:"notifyData"`                 // 支付回调数据
	CreatedAt     time.Time     `json:"createdAt"`                  // 创建时间
	UpdatedAt     time.Time     `json:"updatedAt"`                  // 更新时间
	DeletedAt     *time.Time    `gorm:"index" json:"deletedAt"`     // 删除时间
}

// TableName 指定表名

// IsValid 检查支付订单是否有效
func (p *Payment) IsValid() bool {
	return p.ID > 0 && p.OrderNo != "" && p.UserID > 0 && p.TargetID > 0
}

// IsSuccess 检查支付是否成功
func (p *Payment) IsSuccess() bool {
	return p.Status == PaymentStatusSuccess
}

// IsFailed 检查支付是否失败
func (p *Payment) IsFailed() bool {
	return p.Status == PaymentStatusFailed
}

// IsRefunded 检查是否已退款
func (p *Payment) IsRefunded() bool {
	return p.Status == PaymentStatusRefunded
}

// NewPayment 创建支付订单
func NewPayment(orderNo string, userID, targetID uint64, paymentType PaymentType, amount int64, description string) *Payment {
	return &Payment{
		OrderNo:     orderNo,
		UserID:      userID,
		TargetID:    targetID,
		Type:        paymentType,
		Amount:      amount,
		Status:      PaymentStatusPending,
		Description: description,
	}
}