add购买记录功能
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180
internal/domains/finance/entities/purchase_order.go
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180
internal/domains/finance/entities/purchase_order.go
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package entities
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import (
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"fmt"
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"math/rand"
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"time"
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"github.com/google/uuid"
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"github.com/shopspring/decimal"
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"gorm.io/gorm"
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)
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// PurchaseOrderStatus 购买订单状态枚举（通用）
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type PurchaseOrderStatus string
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const (
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PurchaseOrderStatusCreated PurchaseOrderStatus = "created" // 已创建
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PurchaseOrderStatusPaid PurchaseOrderStatus = "paid" // 已支付
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PurchaseOrderStatusFailed PurchaseOrderStatus = "failed" // 支付失败
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PurchaseOrderStatusCancelled PurchaseOrderStatus = "cancelled" // 已取消
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PurchaseOrderStatusRefunded PurchaseOrderStatus = "refunded" // 已退款
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PurchaseOrderStatusClosed PurchaseOrderStatus = "closed" // 已关闭
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)
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// PurchaseOrder 购买订单实体（统一表 ty_purchase_orders，兼容多支付渠道）
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type PurchaseOrder struct {
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// 基础标识
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ID string `gorm:"primaryKey;type:varchar(36)" json:"id" comment:"购买订单唯一标识"`
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UserID string `gorm:"type:varchar(36);not null;index" json:"user_id" comment:"购买用户ID"`
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OrderNo string `gorm:"type:varchar(64);not null;uniqueIndex" json:"order_no" comment:"商户订单号"`
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TradeNo *string `gorm:"type:varchar(64);uniqueIndex" json:"trade_no,omitempty" comment:"第三方支付交易号"`
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// 产品信息
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ProductID string `gorm:"type:varchar(36);not null;index" json:"product_id" comment:"产品ID"`
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ProductCode string `gorm:"type:varchar(50);not null" json:"product_code" comment:"产品编号"`
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ProductName string `gorm:"type:varchar(200);not null" json:"product_name" comment:"产品名称"`
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Category string `gorm:"type:varchar(50)" json:"category,omitempty" comment:"产品分类"`
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// 订单信息
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Subject string `gorm:"type:varchar(200);not null" json:"subject" comment:"订单标题"`
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Amount decimal.Decimal `gorm:"type:decimal(20,8);not null" json:"amount" comment:"订单金额"`
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PayAmount *decimal.Decimal `gorm:"type:decimal(20,8)" json:"pay_amount,omitempty" comment:"实际支付金额"`
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Status PurchaseOrderStatus `gorm:"type:varchar(20);not null;default:'created';index" json:"status" comment:"订单状态"`
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Platform string `gorm:"type:varchar(20);not null" json:"platform" comment:"下单平台：app/h5/pc/wx_h5/wx_mini等"`
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PayChannel string `gorm:"type:varchar(20);default:'alipay';index" json:"pay_channel" comment:"支付渠道：alipay/wechat"`
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PaymentType string `gorm:"type:varchar(20);not null" json:"payment_type" comment:"支付类型：alipay, wechat, free"`
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// 支付渠道返回信息
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BuyerID string `gorm:"type:varchar(64)" json:"buyer_id,omitempty" comment:"买家ID（支付渠道方）"`
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SellerID string `gorm:"type:varchar(64)" json:"seller_id,omitempty" comment:"卖家ID（支付渠道方）"`
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ReceiptAmount decimal.Decimal `gorm:"type:decimal(20,8)" json:"receipt_amount,omitempty" comment:"实收金额"`
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// 回调信息
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NotifyTime *time.Time `gorm:"index" json:"notify_time,omitempty" comment:"异步通知时间"`
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ReturnTime *time.Time `gorm:"index" json:"return_time,omitempty" comment:"同步返回时间"`
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PayTime *time.Time `gorm:"index" json:"pay_time,omitempty" comment:"支付完成时间"`
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// 文件信息
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FilePath *string `gorm:"type:varchar(500)" json:"file_path,omitempty" comment:"产品文件路径"`
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FileSize *int64 `gorm:"type:bigint" json:"file_size,omitempty" comment:"文件大小（字节）"`
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// 备注信息
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Remark string `gorm:"type:varchar(500)" json:"remark,omitempty" comment:"备注信息"`
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// 错误信息
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ErrorCode string `gorm:"type:varchar(64)" json:"error_code,omitempty" comment:"错误码"`
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ErrorMessage string `gorm:"type:text" json:"error_message,omitempty" comment:"错误信息"`
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// 时间戳字段
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CreatedAt time.Time `gorm:"autoCreateTime" json:"created_at" comment:"创建时间"`
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UpdatedAt time.Time `gorm:"autoUpdateTime" json:"updated_at" comment:"更新时间"`
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DeletedAt gorm.DeletedAt `gorm:"index" json:"-" comment:"软删除时间"`
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}
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// TableName 指定数据库表名
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func (PurchaseOrder) TableName() string {
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return "ty_purchase_orders"
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}
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// BeforeCreate GORM钩子：创建前自动生成UUID和订单号
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func (p *PurchaseOrder) BeforeCreate(tx *gorm.DB) error {
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if p.ID == "" {
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p.ID = uuid.New().String()
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}
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if p.OrderNo == "" {
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p.OrderNo = generatePurchaseOrderNo()
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}
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return nil
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}
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// generatePurchaseOrderNo 生成购买订单号
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func generatePurchaseOrderNo() string {
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// 使用时间戳+随机数生成唯一订单号，例如：PO202312200001
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timestamp := time.Now().Format("20060102")
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random := fmt.Sprintf("%04d", rand.Intn(9999))
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return fmt.Sprintf("PO%s%s", timestamp, random)
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}
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// IsCreated 检查是否为已创建状态
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func (p *PurchaseOrder) IsCreated() bool {
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return p.Status == PurchaseOrderStatusCreated
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}
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// IsPaid 检查是否为已支付状态
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func (p *PurchaseOrder) IsPaid() bool {
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return p.Status == PurchaseOrderStatusPaid
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}
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// IsFailed 检查是否为支付失败状态
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func (p *PurchaseOrder) IsFailed() bool {
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return p.Status == PurchaseOrderStatusFailed
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}
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// IsCancelled 检查是否为已取消状态
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func (p *PurchaseOrder) IsCancelled() bool {
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return p.Status == PurchaseOrderStatusCancelled
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}
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// IsRefunded 检查是否为已退款状态
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func (p *PurchaseOrder) IsRefunded() bool {
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return p.Status == PurchaseOrderStatusRefunded
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}
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// IsClosed 检查是否为已关闭状态
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func (p *PurchaseOrder) IsClosed() bool {
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return p.Status == PurchaseOrderStatusClosed
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}
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// MarkPaid 标记为已支付
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func (p *PurchaseOrder) MarkPaid(tradeNo, buyerID, sellerID string, payAmount, receiptAmount decimal.Decimal) {
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p.Status = PurchaseOrderStatusPaid
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p.TradeNo = &tradeNo
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p.BuyerID = buyerID
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p.SellerID = sellerID
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p.PayAmount = &payAmount
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p.ReceiptAmount = receiptAmount
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now := time.Now()
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p.PayTime = &now
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p.NotifyTime = &now
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}
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// MarkFailed 标记为支付失败
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func (p *PurchaseOrder) MarkFailed(errorCode, errorMessage string) {
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p.Status = PurchaseOrderStatusFailed
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p.ErrorCode = errorCode
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p.ErrorMessage = errorMessage
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}
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// MarkCancelled 标记为已取消
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func (p *PurchaseOrder) MarkCancelled() {
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p.Status = PurchaseOrderStatusCancelled
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}
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// MarkRefunded 标记为已退款
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func (p *PurchaseOrder) MarkRefunded() {
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p.Status = PurchaseOrderStatusRefunded
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}
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// MarkClosed 标记为已关闭
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func (p *PurchaseOrder) MarkClosed() {
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p.Status = PurchaseOrderStatusClosed
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}
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// NewPurchaseOrder 通用工厂方法 - 创建购买订单（支持多支付渠道）
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func NewPurchaseOrder(userID, productID, productCode, productName, subject string, amount decimal.Decimal, platform, payChannel, paymentType string) *PurchaseOrder {
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return &PurchaseOrder{
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ID: uuid.New().String(),
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UserID: userID,
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OrderNo: generatePurchaseOrderNo(),
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ProductID: productID,
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ProductCode: productCode,
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ProductName: productName,
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Subject: subject,
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Amount: amount,
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Status: PurchaseOrderStatusCreated,
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Platform: platform,
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PayChannel: payChannel,
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PaymentType: paymentType,
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}
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}
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