feat(channels): add Shangwutong connector

backend/internal/handler/api/v1/conversation_serializer.go

@@ -128,6 +128,10 @@ type chatwootMessagePayload struct {
 	CreatedAt         int64          `json:"created_at"`
 	Private           bool           `json:"private"`
 	SourceID          string         `json:"source_id"`
+	External          bool           `json:"external"`
+	ExternalSourceIDs map[string]any `json:"external_source_ids"`
+	AdditionalAttrs   map[string]any `json:"additional_attributes"`
+	IdempotentReplay  bool           `json:"idempotent_replay,omitempty"`
 	Sender            map[string]any `json:"sender,omitempty"`
 	Attachments       []any          `json:"attachments,omitempty"`
 	Call              map[string]any `json:"call,omitempty"`
@@ -438,6 +442,10 @@ func serializeMessage(ctx context.Context, db *gorm.DB, message *model.Message,
 		CreatedAt:         message.CreatedAt.Unix(),
 		Private:           message.Private,
 		SourceID:          message.SourceID,
+		External:          message.External,
+		ExternalSourceIDs: jsonObject(message.ExternalSourceIDs),
+		AdditionalAttrs:   jsonObject(message.AdditionalAttributes),
+		IdempotentReplay:  message.IdempotentReplay,
 	}
 	if db != nil && message.SenderID != nil && *message.SenderID != 0 {
 		senderType := normalizedSenderType(message.SenderType)
@@ -606,7 +614,7 @@ func serializeAttachment(ctx context.Context, db *gorm.DB, attachment *model.Att
 func serializeAttachmentPushEventData(attachment *model.Attachment) map[string]any {
 	extension := strings.TrimPrefix(filepath.Ext(attachment.FileName), ".")
 	dataURL := nonEmpty(attachment.FileURL, attachment.ExternalURL)
-	return map[string]any{
+	payload := map[string]any{
 		"id":         attachment.ID,
 		"message_id": attachment.MessageID,
 		"file_type":  attachment.FileType,
@@ -618,6 +626,13 @@ func serializeAttachmentPushEventData(attachment *model.Attachment) map[string]a
 		"width":      attachment.Width,
 		"height":     attachment.Height,
 	}
+	if strings.TrimSpace(attachment.Metadata) != "" {
+		metadata := map[string]any{}
+		if json.Unmarshal([]byte(attachment.Metadata), &metadata) == nil {
+			payload["metadata"] = metadata
+		}
+	}
+	return payload
 }
 
 func serializeAttachmentWithConversation(ctx context.Context, db *gorm.DB, attachment *model.Attachment) map[string]any {