feat: support refund

backend/providers/wepay/pay.go

@@ -83,7 +83,7 @@ func (pay *PrepayData) PaySignOfJSAPI() (*wechat.JSAPIPayParams, error) {
 }
 
 func (c *Client) Refund(ctx context.Context, f func(*BodyMap)) (*wechat.RefundOrderResponse, error) {
-	bm := NewBodyMap(c.config)
+	bm := NewRefundBodyMap(c.config)
 	f(bm)
 
 	resp, err := c.payClient.V3Refund(ctx, bm.bm)
@@ -91,6 +91,11 @@ func (c *Client) Refund(ctx context.Context, f func(*BodyMap)) (*wechat.RefundOr
 		return nil, err
 	}
 
+	if resp.Code != wechat.Success {
+		log.Errorf("WePay Refund error: %s", resp.Error)
+		return nil, errors.New(resp.Error)
+	}
+
 	return resp.Response, nil
 }
 
@@ -184,6 +189,14 @@ type BodyMap struct {
 	bm gopay.BodyMap
 }
 
+func NewRefundBodyMap(c *w.Config) *BodyMap {
+	bm := make(gopay.BodyMap)
+	bm.Set("notify_url", c.Pay.NotifyURL)
+	return &BodyMap{
+		bm: bm,
+	}
+}
+
 func NewBodyMap(c *w.Config) *BodyMap {
 	bm := make(gopay.BodyMap)
 	bm.Set("appid", c.AppID).
@@ -253,13 +266,17 @@ func (b *BodyMap) CNYRefundAmount(total, refund int64) *BodyMap {
 	return b.RefundAmount(total, refund, CNY)
 }
 
+type RefundGoodsInfo struct {
+	MerchantGoodsID string `json:"merchant_goods_id"`
+	GoodsName       string `json:"goods_name"`
+	RefundQuantity  int64  `json:"refund_quantity"`
+	RefundAmount    int64  `json:"refund_amount"`
+	UnitPrice       int64  `json:"unit_price"`
+}
+
 // RefundGoodsInfo
-func (b *BodyMap) RefundGoodsInfo(name string) *BodyMap {
-	return b.Set("goods_detail", []map[string]any{
-		{
-			"goods_name": name,
-		},
-	})
+func (b *BodyMap) RefundGoods(goods []RefundGoodsInfo) *BodyMap {
+	return b.Set("goods_detail", goods)
 }
 
 // Amount
@@ -275,6 +292,19 @@ func (b *BodyMap) CNYAmount(total int64) *BodyMap {
 	return b.Amount(total, CNY)
 }
 
+type GoodsInfo struct {
+	MerchantGoodsID string `json:"merchant_goods_id"`
+	GoodsName       string `json:"goods_name"`
+	Quantity        int64  `json:"quantity"`
+	UnitPrice       int64  `json:"unit_price"`
+}
+
+func (b *BodyMap) Detail(goods []GoodsInfo) *BodyMap {
+	return b.SetBodyMap("detail", func(bm gopay.BodyMap) {
+		bm.Set("goods_detail", goods)
+	})
+}
+
 // Payer
 func (b *BodyMap) Payer(spOpenId string) *BodyMap {
 	return b.SetBodyMap("payer", func(bm gopay.BodyMap) {