feat: add refund

backend/app/http/admin/orders.go

@@ -3,6 +3,7 @@ package admin
 import (
 	"quyun/app/models"
 	"quyun/app/requests"
+	"quyun/database/fields"
 	"quyun/providers/wepay"
 
 	"github.com/gofiber/fiber/v3"
@@ -37,5 +38,32 @@ func (ctl *orders) Refund(ctx fiber.Ctx, id int64) error {
 		return err
 	}
 
-	return ctx.JSON(order)
+	post, err := models.Posts.GetByID(ctx.Context(), order.PostID)
+	if err != nil {
+		return err
+	}
+
+	refundTotal := order.Price * int64(order.Discount) / 100
+	resp, err := ctl.wepay.Refund(ctx.Context(), func(bm *wepay.BodyMap) {
+		bm.
+			OutRefundNo(order.OrderNo).
+			OutTradeNo(order.OrderNo).
+			TransactionID(order.TransactionID).
+			CNYRefundAmount(refundTotal, refundTotal).
+			RefundReason("管理员退款").
+			RefundGoodsInfo(post.Title)
+	})
+	if err != nil {
+		return err
+	}
+
+	meta := order.Meta.Data
+	meta.RefundResp = resp
+	order.Meta = fields.ToJson(meta)
+	order.RefundTransactionID = resp.RefundId
+
+	if err := models.Orders.Update(ctx.Context(), order); err != nil {
+		return err
+	}
+	return nil
 }