feat(handler): 支持代购订单预检和充值订单支付回调

- OrderHandler 新增 PurchaseCheck 接口用于代购订单预检
- PaymentCallback 支持充值订单支付回调处理
- 根据订单号前缀区分订单类型（代购订单 vs 充值订单）
- 充值订单回调自动更新订单状态和钱包余额

internal/handler/admin/order.go

@@ -107,3 +107,21 @@ func (h *OrderHandler) Cancel(c *fiber.Ctx) error {
 
 	return response.Success(c, nil)
 }
+
+// PurchaseCheck 代购订单预检接口
+// 路由: POST /api/admin/orders/purchase-check
+// 参数: order_type(订单类型), resource_id(资源ID), package_ids(套餐ID列表)
+// 响应: 套餐总价、强充要求、实际支付金额等预检结果
+func (h *OrderHandler) PurchaseCheck(c *fiber.Ctx) error {
+	var req dto.PurchaseCheckRequest
+	if err := c.BodyParser(&req); err != nil {
+		return errors.New(errors.CodeInvalidParam, "请求参数解析失败")
+	}
+
+	result, err := h.service.GetPurchaseCheck(c.UserContext(), &req)
+	if err != nil {
+		return err
+	}
+
+	return response.Success(c, result)
+}

internal/handler/callback/payment.go

@@ -3,12 +3,15 @@ package callback
 import (
 	"context"
 	"net/http"
+	"strings"
 
 	"github.com/gofiber/fiber/v2"
 	"github.com/valyala/fasthttp/fasthttpadaptor"
 
 	"github.com/break/junhong_cmp_fiber/internal/model"
 	orderService "github.com/break/junhong_cmp_fiber/internal/service/order"
+	rechargeService "github.com/break/junhong_cmp_fiber/internal/service/recharge"
+	"github.com/break/junhong_cmp_fiber/pkg/constants"
 	"github.com/break/junhong_cmp_fiber/pkg/errors"
 	"github.com/break/junhong_cmp_fiber/pkg/response"
 	"github.com/break/junhong_cmp_fiber/pkg/wechat"
@@ -16,12 +19,14 @@ import (
 
 type PaymentHandler struct {
 	orderService    *orderService.Service
+	rechargeService *rechargeService.Service
 	wechatPayment   wechat.PaymentServiceInterface
 }
 
-func NewPaymentHandler(orderService *orderService.Service, wechatPayment wechat.PaymentServiceInterface) *PaymentHandler {
+func NewPaymentHandler(orderService *orderService.Service, rechargeService *rechargeService.Service, wechatPayment wechat.PaymentServiceInterface) *PaymentHandler {
 	return &PaymentHandler{
 		orderService:    orderService,
+		rechargeService: rechargeService,
 		wechatPayment:   wechatPayment,
 	}
 }
@@ -41,6 +46,14 @@ func (h *PaymentHandler) WechatPayCallback(c *fiber.Ctx) error {
 		if result.TradeState != "SUCCESS" {
 			return nil
 		}
+
+		// 根据订单号前缀判断订单类型
+		if strings.HasPrefix(result.OutTradeNo, constants.RechargeOrderPrefix) {
+			// 充值订单回调
+			return h.rechargeService.HandlePaymentCallback(ctx, result.OutTradeNo, model.PaymentMethodWechat, result.TransactionID)
+		}
+
+		// 套餐订单回调
 		return h.orderService.HandlePaymentCallback(ctx, result.OutTradeNo, model.PaymentMethodWechat)
 	})
 
@@ -65,9 +78,20 @@ func (h *PaymentHandler) AlipayCallback(c *fiber.Ctx) error {
 		return errors.New(errors.CodeInvalidParam, "订单号不能为空")
 	}
 
-	if err := h.orderService.HandlePaymentCallback(c.UserContext(), req.OrderNo, model.PaymentMethodAlipay); err != nil {
+	ctx := c.UserContext()
+
+	// 根据订单号前缀判断订单类型
+	if strings.HasPrefix(req.OrderNo, constants.RechargeOrderPrefix) {
+		// 充值订单回调
+		if err := h.rechargeService.HandlePaymentCallback(ctx, req.OrderNo, model.PaymentMethodAlipay, ""); err != nil {
 			return err
 		}
+	} else {
+		// 套餐订单回调
+		if err := h.orderService.HandlePaymentCallback(ctx, req.OrderNo, model.PaymentMethodAlipay); err != nil {
+			return err
+		}
+	}
 
 	return c.SendString("success")
 }