优化支付退款钱包链路

backend/internal/modules/wallet/handler.go

@@ -81,6 +81,25 @@ func (h *Handler) Recharge(c *gin.Context) {
 	response.OK(c, account)
 }
 
+func (h *Handler) Withdraw(c *gin.Context) {
+	userID, ok := currentUserID(c)
+	if !ok {
+		response.Unauthorized(c, "缺少用户上下文")
+		return
+	}
+	var req WithdrawRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		response.BadRequest(c, "提现金额不正确")
+		return
+	}
+	account, err := h.service.Withdraw(userID, req)
+	if err != nil {
+		writeWalletError(c, err)
+		return
+	}
+	response.OK(c, account)
+}
+
 func (h *Handler) AdminLedger(c *gin.Context) {
 	query, ok := parseAdminLedgerQuery(c)
 	if !ok {
@@ -136,6 +155,10 @@ func writeWalletError(c *gin.Context, err error) {
 		response.BadRequest(c, "充值金额不正确")
 	case errors.Is(err, ErrInsufficientBalance):
 		response.Error(c, 409, "insufficient_balance", "钱包余额不足")
+	case errors.Is(err, ErrRechargeDisabled):
+		response.Error(c, 410, "wallet_recharge_disabled", "钱包充值已关闭")
+	case errors.Is(err, ErrFeaturePending):
+		response.Error(c, 501, "feature_pending", "提现功能待开发")
 	default:
 		response.ServiceUnavailable(c, "钱包服务暂时不可用")
 	}