feat: add wechat pay

backend/database/fields/orders.go

@@ -0,0 +1,19 @@
+package fields
+
+// swagger:enum OrderType
+// ENUM( Charge, Consume, Refund)
+type OrderType int16
+
+// swagger:enum OrderStatus
+// ENUM( Pending, Paid, Refunding, Refunded, Cancelled)
+type OrderStatus int16
+
+type OrderMeta struct {
+	ObjectID int64 `json:"object_id"`
+	Price    int64 `json:"price"`
+	Discount int16 `json:"discount"`
+	Coupons  []struct {
+		ID          int64  `json:"id"`
+		Description string `json:"description"`
+	} `json:"coupons"`
+}