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
 }

backend/database/fields/orders.go

@@ -2,6 +2,8 @@ package fields
 
 import (
 	"quyun/providers/wepay"
+
+	"github.com/go-pay/gopay/wechat/v3"
 )
 
 // swagger:enum OrderStatus
@@ -9,5 +11,6 @@ import (
 type OrderStatus int16
 
 type OrderMeta struct {
-	PayNotify wepay.PayNotify `json:"pay_notify"`
+	PayNotify  wepay.PayNotify             `json:"pay_notify"`
+	RefundResp *wechat.RefundOrderResponse `json:"refund_resp"`
 }

backend/providers/wepay/config.go

@@ -39,3 +39,46 @@ type PayNotify struct {
 		PayerCurrency string `json:"payer_currency"`
 	} `json:"amount"`
 }
+
+type RefundResponse struct {
+	RefundID            string    `json:"refund_id"`
+	OutRefundNo         string    `json:"out_refund_no"`
+	TransactionID       string    `json:"transaction_id"`
+	OutTradeNo          string    `json:"out_trade_no"`
+	Channel             string    `json:"channel"`
+	UserReceivedAccount string    `json:"user_received_account"`
+	SuccessTime         time.Time `json:"success_time"`
+	CreateTime          time.Time `json:"create_time"`
+	Status              string    `json:"status"`
+	FundsAccount        string    `json:"funds_account"`
+	Amount              struct {
+		Total  int `json:"total"`
+		Refund int `json:"refund"`
+		From   []struct {
+			Account string `json:"account"`
+			Amount  int    `json:"amount"`
+		} `json:"from"`
+		PayerTotal       int    `json:"payer_total"`
+		PayerRefund      int    `json:"payer_refund"`
+		SettlementRefund int    `json:"settlement_refund"`
+		SettlementTotal  int    `json:"settlement_total"`
+		DiscountRefund   int    `json:"discount_refund"`
+		Currency         string `json:"currency"`
+		RefundFee        int    `json:"refund_fee"`
+	} `json:"amount"`
+	PromotionDetail []struct {
+		PromotionID  string `json:"promotion_id"`
+		Scope        string `json:"scope"`
+		Type         string `json:"type"`
+		Amount       int    `json:"amount"`
+		RefundAmount int    `json:"refund_amount"`
+		GoodsDetail  []struct {
+			MerchantGoodsID  string `json:"merchant_goods_id"`
+			WechatpayGoodsID string `json:"wechatpay_goods_id"`
+			GoodsName        string `json:"goods_name"`
+			UnitPrice        int    `json:"unit_price"`
+			RefundAmount     int    `json:"refund_amount"`
+			RefundQuantity   int    `json:"refund_quantity"`
+		} `json:"goods_detail"`
+	} `json:"promotion_detail"`
+}

backend/providers/wepay/pay.go

@@ -78,10 +78,22 @@ type PrepayData struct {
 }
 
 // PaySignOfJSAPI
-func (pay *PrepayData) PaySignOfJSAPI() (*wechat.JSAPIPayParams, error) {
+func (pay *PrepayData) PaySignOfJSAPI() (*, error) {
 	return pay.client.payClient.PaySignOfJSAPI(pay.AppID, pay.PrepayID)
 }
 
+func (c *Client) Refund(ctx context.Context, f func(*BodyMap)) (*wechat.RefundOrderResponse,error ){
+	bm := NewBodyMap(c.config)
+	f(bm)
+
+	resp, err := c.payClient.V3Refund(ctx, bm.bm)
+	if err != nil {
+		return nil, err
+	}
+
+	return resp.Response, nil
+}
+
 func (c *Client) V3TransactionJsapi(ctx context.Context, f func(*BodyMap)) (*PrepayData, error) {
 	bm := NewBodyMap(c.config)
 	f(bm)
@@ -149,11 +161,12 @@ func NewBodyMap(c *w.Config) *BodyMap {
 	bm := make(gopay.BodyMap)
 	bm.Set("appid", c.AppID).
 		Set("mchid", c.Pay.MchID).
-		Set("notify_url", c.Pay.NotifyURL).
-		SetBodyMap("amount", func(bm gopay.BodyMap) {
-			bm.Set("total", 1).
-				Set("currency", "CNY")
-		})
+		Set("notify_url", c.Pay.NotifyURL)
+		// .
+		// SetBodyMap("amount", func(bm gopay.BodyMap) {
+		// 	bm.Set("total", 1).
+		// 		Set("currency", "CNY")
+		// })
 	return &BodyMap{
 		bm: bm,
 	}
@@ -184,6 +197,44 @@ func (b *BodyMap) OutTradeNo(outTradeNo string) *BodyMap {
 	return b.Set("out_trade_no", outTradeNo)
 }
 
+// TransactionID
+func (b *BodyMap) TransactionID(transactionID string) *BodyMap {
+	return b.Set("transaction_id", transactionID)
+}
+
+// OutRefundNo
+func (b *BodyMap) OutRefundNo(outRefundNo string) *BodyMap {
+	return b.Set("out_refund_no", outRefundNo)
+}
+
+// RefundReason
+func (b *BodyMap) RefundReason(refundReason string) *BodyMap {
+	return b.Set("reason", refundReason)
+}
+
+// RefundAmount
+func (b *BodyMap) RefundAmount(total, refund int64, currency CURRENCY) *BodyMap {
+	return b.SetBodyMap("amount", func(bm gopay.BodyMap) {
+		bm.
+			Set("total", total).
+			Set("refund", refund).
+			Set("currency", currency.String())
+	})
+}
+
+func (b *BodyMap) CNYRefundAmount(total, refund int64) *BodyMap {
+	return b.RefundAmount(total, refund, CNY)
+}
+
+// RefundGoodsInfo
+func (b *BodyMap) RefundGoodsInfo(name string) *BodyMap {
+	return b.Set("goods_detail", []map[string]any{
+		{
+			"goods_name": name,
+		},
+	})
+}
+
 // Amount
 func (b *BodyMap) Amount(total int64, currency CURRENCY) *BodyMap {
 	return b.SetBodyMap("amount", func(bm gopay.BodyMap) {