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This commit is contained in:
242
backend/internal/api/handler/pay.go
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242
backend/internal/api/handler/pay.go
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package handler
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import (
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"errors"
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"net/http"
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"github.com/gin-gonic/gin"
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"pay-bridge/internal/errcode"
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"pay-bridge/internal/model"
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"pay-bridge/internal/service"
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)
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// PayHandler 支付相关 Handler
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type PayHandler struct {
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tradeSvc *service.TradeService
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refundSvc *service.RefundService
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}
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func NewPayHandler(tradeSvc *service.TradeService, refundSvc *service.RefundService) *PayHandler {
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return &PayHandler{tradeSvc: tradeSvc, refundSvc: refundSvc}
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}
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type unifiedOrderReq struct {
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ChannelCode string `json:"channel_code"`
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MerchantOrderNo string `json:"merchant_order_no" binding:"required"`
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PayMethod model.PayMethod `json:"pay_method" binding:"required"`
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Amount int64 `json:"amount" binding:"required,min=1"`
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ProfitSharingAmount int64 `json:"profit_sharing_amount"`
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Subject string `json:"subject" binding:"required"`
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NotifyURL string `json:"notify_url" binding:"required,url"`
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ExpireMinutes int `json:"expire_minutes"`
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Extra map[string]any `json:"extra"`
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MerchantID string `json:"merchant_id"` // 可选，指定收款商户
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}
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type closeOrderReq struct {
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TradeNo string `json:"trade_no" binding:"required"`
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}
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type refundReq struct {
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TradeNo string `json:"trade_no" binding:"required"`
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RefundAmount int64 `json:"refund_amount" binding:"required,min=1"`
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Reason string `json:"reason"`
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NotifyURL string `json:"notify_url"`
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}
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// UnifiedOrder POST /api/v1/pay/unified-order
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func (h *PayHandler) UnifiedOrder(c *gin.Context) {
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var req unifiedOrderReq
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if err := c.ShouldBindJSON(&req); err != nil {
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BadRequest(c, errcode.ErrInvalidParam, err.Error())
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return
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}
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appID := c.GetString("app_id")
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resp, err := h.tradeSvc.CreateOrder(c.Request.Context(), &service.CreateOrderReq{
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AppID: appID,
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ChannelCode: req.ChannelCode,
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MerchantOrderNo: req.MerchantOrderNo,
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PayMethod: req.PayMethod,
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Amount: req.Amount,
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ProfitSharingAmount: req.ProfitSharingAmount,
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Subject: req.Subject,
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NotifyURL: req.NotifyURL,
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ExpireMinutes: req.ExpireMinutes,
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Extra: req.Extra,
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MerchantID: req.MerchantID,
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})
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if err != nil {
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handleBizError(c, err)
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return
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}
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OK(c, gin.H{
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"trade_no": resp.TradeNo,
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"pay_credential": resp.PayCredential,
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"is_idempotent": resp.IsIdempotent,
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})
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}
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// QueryOrder GET /api/v1/pay/query/:tradeNo
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func (h *PayHandler) QueryOrder(c *gin.Context) {
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tradeNo := c.Param("tradeNo")
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if tradeNo == "" {
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BadRequest(c, errcode.ErrMissingParam, "trade_no is required")
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return
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}
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appID := c.GetString("app_id")
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order, err := h.tradeSvc.QueryOrder(c.Request.Context(), appID, tradeNo)
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if err != nil {
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handleBizError(c, err)
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return
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}
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OK(c, gin.H{
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"trade_no": order.TradeNo,
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"merchant_order_no": order.MerchantOrderNo,
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"pay_method": order.PayMethod,
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"amount": order.Amount,
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"status": order.Status,
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"channel_trade_no": order.ChannelTradeNo,
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"pay_time": order.PayTime,
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"created_at": order.CreatedAt,
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})
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}
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// CloseOrder POST /api/v1/pay/close
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func (h *PayHandler) CloseOrder(c *gin.Context) {
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var req closeOrderReq
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if err := c.ShouldBindJSON(&req); err != nil {
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BadRequest(c, errcode.ErrInvalidParam, err.Error())
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return
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}
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appID := c.GetString("app_id")
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if err := h.tradeSvc.CloseOrder(c.Request.Context(), appID, req.TradeNo); err != nil {
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handleBizError(c, err)
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return
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}
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OK(c, nil)
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}
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// Refund POST /api/v1/pay/refund
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func (h *PayHandler) Refund(c *gin.Context) {
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var req refundReq
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if err := c.ShouldBindJSON(&req); err != nil {
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BadRequest(c, errcode.ErrInvalidParam, err.Error())
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return
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}
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appID := c.GetString("app_id")
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refund, err := h.refundSvc.CreateRefund(c.Request.Context(), &service.CreateRefundReq{
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AppID: appID,
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TradeNo: req.TradeNo,
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RefundAmount: req.RefundAmount,
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Reason: req.Reason,
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NotifyURL: req.NotifyURL,
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})
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if err != nil {
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handleBizError(c, err)
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return
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}
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OK(c, gin.H{
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"refund_no": refund.RefundNo,
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"trade_no": refund.TradeNo,
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"refund_amount": refund.RefundAmount,
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"status": refund.Status,
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"channel_refund_no": refund.ChannelRefundNo,
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})
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}
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// QueryRefund GET /api/v1/pay/refund/query/:refundNo
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func (h *PayHandler) QueryRefund(c *gin.Context) {
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refundNo := c.Param("refundNo")
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if refundNo == "" {
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BadRequest(c, errcode.ErrMissingParam, "refund_no is required")
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return
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}
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appID := c.GetString("app_id")
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refund, err := h.refundSvc.QueryRefund(c.Request.Context(), appID, refundNo)
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if err != nil {
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handleBizError(c, err)
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return
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}
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OK(c, gin.H{
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"refund_no": refund.RefundNo,
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"trade_no": refund.TradeNo,
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"refund_amount": refund.RefundAmount,
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"status": refund.Status,
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"channel_refund_no": refund.ChannelRefundNo,
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"refund_time": refund.RefundTime,
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})
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}
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// handleBizError 将业务错误映射到 HTTP 响应
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func handleBizError(c *gin.Context, err error) {
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code := err.Error()
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msg := errcode.Message(code)
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if msg == "未知错误" {
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msg = err.Error()
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code = errcode.ErrInternalSystem
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}
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switch code {
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case errcode.ErrInvalidParam, errcode.ErrMissingParam, errcode.ErrInvalidPayMethod, errcode.ErrInvalidAmount:
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BadRequest(c, code, msg)
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case errcode.ErrUnauthorized, errcode.ErrAppNotFound:
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Unauthorized(c, code, msg)
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case errcode.ErrPermissionDenied:
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Forbidden(c, code, msg)
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case errcode.ErrOrderNotFound, errcode.ErrOrderAlreadyPaid, errcode.ErrOrderClosed,
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errcode.ErrRefundAmountExceed, errcode.ErrSharingAmountExceed, errcode.ErrOrderNotPaid,
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errcode.ErrSharingNotConfig, errcode.ErrSharingFeeExceed, errcode.ErrRefundNotFound:
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UnprocessableEntity(c, code, msg)
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case errcode.ErrChannelCreateFail, errcode.ErrChannelRefundFail,
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errcode.ErrChannelTimeout, errcode.ErrChannelNotSupport, errcode.ErrChannelVerifyFail:
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BadGateway(c, code, msg)
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default:
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_ = errors.New(code) // suppress unused
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InternalError(c, errcode.ErrInternalSystem, errcode.Message(errcode.ErrInternalSystem))
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}
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}
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// NotifyHandler 渠道回调 Handler
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type NotifyHandler struct {
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tradeSvc *service.TradeService
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}
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func NewNotifyHandler(tradeSvc *service.TradeService) *NotifyHandler {
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return &NotifyHandler{tradeSvc: tradeSvc}
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}
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// PaymentCallback POST /api/v1/notify/payment/:channelCode
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func (h *NotifyHandler) PaymentCallback(c *gin.Context) {
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channelCode := c.Param("channelCode")
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var rawBody []byte
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if v, exists := c.Get("raw_body"); exists {
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rawBody, _ = v.([]byte)
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}
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result, err := h.tradeSvc.HandleUpstreamNotify(c.Request.Context(), channelCode, rawBody, headersMap(c))
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if err != nil {
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c.String(http.StatusOK, "fail")
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return
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}
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c.String(http.StatusOK, result)
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}
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func headersMap(c *gin.Context) map[string]string {
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m := make(map[string]string)
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for k, v := range c.Request.Header {
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if len(v) > 0 {
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m[k] = v[0]
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}
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}
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return m
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}
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