功能：接入乐玩开放平台双渠道路由，并修复渠道锁定与 Webhook 可靠性
在保持 DLC 默认零破坏的前提下，支持 priority/仅乐玩/仅 DLC 履约策略与后台 GUI 配置；同步补齐 Prepare 渠道落库、乐玩订单取消、Webhook 验签与失败重试。 Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
yml2213
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package handler
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import (
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"encoding/json"
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"io"
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"net/http"
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"strings"
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"time"
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"affiliate_dash/internal/model"
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"affiliate_dash/internal/pkg/lewan"
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"affiliate_dash/internal/pkg/response"
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"affiliate_dash/internal/service"
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"github.com/gin-gonic/gin"
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"gorm.io/gorm"
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)
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// LewanWebhookHandler 接收乐玩开放平台的 Webhook 事件推送
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type LewanWebhookHandler struct {
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fulfillmentSvc *service.FulfillmentService
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webhookSecret string
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applicationID string
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db *gorm.DB
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}
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func NewLewanWebhookHandler(fulfillmentSvc *service.FulfillmentService, db *gorm.DB, webhookSecret, applicationID string) *LewanWebhookHandler {
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return &LewanWebhookHandler{
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fulfillmentSvc: fulfillmentSvc,
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db: db,
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webhookSecret: strings.TrimSpace(webhookSecret),
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applicationID: strings.TrimSpace(applicationID),
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}
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}
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type WebhookEventData struct {
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OrderID string `json:"orderId"`
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OrderNo string `json:"orderNo"`
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CallerOrderID string `json:"callerOrderId"`
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Status string `json:"status"` // SUCCEEDED, PARTIAL_SUCCESS, FAILED
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SucceededQuantity int64 `json:"succeededQuantity"`
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FailedQuantity int64 `json:"failedQuantity"`
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ReleasedQuantity int64 `json:"releasedQuantity"`
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PendingQuantity int64 `json:"pendingQuantity"`
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FailureCodes []string `json:"failureCodes"`
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ChangedUnitID string `json:"changedUnitId"`
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Items json.RawMessage `json:"items"`
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}
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type WebhookPayload struct {
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SchemaVersion string `json:"schemaVersion"`
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ApplicationID string `json:"applicationId"`
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EventID string `json:"eventId"`
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OrderVersion *int `json:"orderVersion"`
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Type string `json:"type"`
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OccurredAt string `json:"occurredAt"`
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Data WebhookEventData `json:"data"`
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}
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func (h *LewanWebhookHandler) Handle(c *gin.Context) {
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appID := c.GetHeader(lewan.HeaderWebhookAppID)
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eventID := c.GetHeader(lewan.HeaderWebhookEventID)
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timestamp := c.GetHeader(lewan.HeaderWebhookTimestamp)
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signature := c.GetHeader(lewan.HeaderWebhookSignature)
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if eventID == "" || timestamp == "" || signature == "" {
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c.JSON(http.StatusBadRequest, gin.H{"error": "missing webhook headers"})
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return
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}
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if h.webhookSecret == "" {
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c.JSON(http.StatusServiceUnavailable, gin.H{"error": "webhook secret not configured"})
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return
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}
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// 限制请求体大小 256 KiB
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rawBody, err := io.ReadAll(io.LimitReader(c.Request.Body, 256<<10))
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if err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": "read body failed"})
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return
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}
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if !lewan.VerifyWebhook(h.webhookSecret, signature, timestamp, eventID, rawBody, 5*time.Minute) {
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c.JSON(http.StatusUnauthorized, gin.H{"error": "signature verification failed"})
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return
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}
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var payload WebhookPayload
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if err := json.Unmarshal(rawBody, &payload); err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": "invalid json"})
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return
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}
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if payload.EventID == "" {
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payload.EventID = eventID
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}
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if payload.ApplicationID == "" {
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payload.ApplicationID = appID
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}
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if h.applicationID != "" {
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gotAppID := payload.ApplicationID
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if gotAppID == "" {
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gotAppID = appID
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}
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if gotAppID != "" && gotAppID != h.applicationID {
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c.JSON(http.StatusUnauthorized, gin.H{"error": "application id mismatch"})
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return
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}
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}
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// 幂等：已处理过的 eventId 直接 200
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if h.db != nil && payload.EventID != "" {
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var existing int64
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if err := h.db.Model(&model.SourceAPINonce{}).
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Where("api_key = ? AND nonce = ?", "lewan_webhook", payload.EventID).
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Count(&existing).Error; err == nil && existing > 0 {
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c.JSON(http.StatusOK, gin.H{"code": 0, "message": "duplicate event, ignored"})
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return
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}
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}
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// 特殊测试事件：验签通过后直接确认
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if payload.Type == "WEBHOOK_TEST" {
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h.recordWebhookNonce(payload.EventID)
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c.JSON(http.StatusOK, gin.H{"code": 0, "message": "test event received"})
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return
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}
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orderNo := payload.Data.CallerOrderID
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if orderNo == "" {
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c.JSON(http.StatusOK, gin.H{"code": 0, "message": "missing callerOrderId, ignored"})
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return
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}
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if err := h.dispatchShipNotify(payload, string(rawBody)); err != nil {
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// 返回 5xx 让上游重试；尚未写入 nonce
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c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
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return
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}
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h.recordWebhookNonce(payload.EventID)
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response.OK(c, gin.H{"received": true})
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}
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func (h *LewanWebhookHandler) recordWebhookNonce(eventID string) {
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if h.db == nil || eventID == "" {
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return
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}
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_ = h.db.Create(&model.SourceAPINonce{
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APIKey: "lewan_webhook",
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Nonce: eventID,
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ExpiresAt: time.Now().Add(7 * 24 * time.Hour),
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}).Error
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}
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func (h *LewanWebhookHandler) dispatchShipNotify(payload WebhookPayload, rawBody string) error {
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orderNo := payload.Data.CallerOrderID
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switch payload.Type {
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case "ORDER_COMPLETED":
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status := payload.Data.Status
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switch status {
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case "SUCCEEDED":
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_, err := h.fulfillmentSvc.HandleShipNotify(service.ShipNotifyInput{
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OrderNo: orderNo,
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ShipStatus: "success",
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ProviderOrderNo: payload.Data.OrderNo,
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RawPayload: rawBody,
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})
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return err
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case "FAILED":
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reason := strings.Join(payload.Data.FailureCodes, "; ")
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if reason == "" {
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reason = "乐玩发货失败"
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}
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_, err := h.fulfillmentSvc.HandleShipNotify(service.ShipNotifyInput{
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OrderNo: orderNo,
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ShipStatus: "failed",
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ProviderOrderNo: payload.Data.OrderNo,
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FailReason: reason,
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RawPayload: rawBody,
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})
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return err
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case "PARTIAL_SUCCESS":
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if payload.Data.SucceededQuantity > 0 {
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_, err := h.fulfillmentSvc.HandleShipNotify(service.ShipNotifyInput{
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OrderNo: orderNo,
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ShipStatus: "success",
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ProviderOrderNo: payload.Data.OrderNo,
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RawPayload: rawBody,
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})
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return err
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}
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reason := strings.Join(payload.Data.FailureCodes, "; ")
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if reason == "" {
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reason = "乐玩部分单件被停止或释放"
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}
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_, err := h.fulfillmentSvc.HandleShipNotify(service.ShipNotifyInput{
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OrderNo: orderNo,
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ShipStatus: "failed",
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ProviderOrderNo: payload.Data.OrderNo,
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FailReason: reason,
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RawPayload: rawBody,
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})
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return err
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}
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case "BINDING_TIMEOUT", "ORDER_CANCELLED":
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_, err := h.fulfillmentSvc.HandleShipNotify(service.ShipNotifyInput{
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OrderNo: orderNo,
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ShipStatus: "failed",
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ProviderOrderNo: payload.Data.OrderNo,
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FailReason: "乐玩订单超时或已取消",
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RawPayload: rawBody,
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})
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return err
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}
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return nil
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}
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