fix: 允许已采集 PDD 商品重新采集 (#121)

admin/service/pdd.go

@@ -589,6 +589,75 @@ func CreatePddCollectTasksForUser(db *sql.DB, actor *model.User, goodsIDs []stri
 	return createPddCollectTasks(db, goodsIDs, strings.TrimSpace(clientID), visibleUserID)
 }
 
+// RecollectPddProductForUser 为详情页一次明确的重新采集创建单商品任务。
+// 普通批量入口仍跳过 collected；本入口允许 collected，但保留旧采集数据，
+// 等 Client 成功提交新结果后再由既有提交逻辑覆盖。
+func RecollectPddProductForUser(db *sql.DB, actor *model.User, goodsID, clientID string) (CollectTaskResult, error) {
+	var result CollectTaskResult
+	goodsID = strings.TrimSpace(goodsID)
+	clientID = strings.TrimSpace(clientID)
+	if goodsID == "" {
+		return result, invalidInput("商品 ID 不能为空")
+	}
+
+	visibleUserID, err := visibleClientUserID(actor)
+	if err != nil {
+		return result, err
+	}
+	tx, err := db.Begin()
+	if err != nil {
+		return result, fmt.Errorf("开始事务失败: %w", err)
+	}
+	defer tx.Rollback()
+
+	if clientID != "" {
+		visible, err := repository.ClientVisibleToUser(tx, clientID, visibleUserID)
+		if err != nil {
+			return result, err
+		}
+		if !visible {
+			return result, invalidInput("所选客户端不存在或不在当前账号可见范围")
+		}
+	}
+
+	p, err := repository.GetPddProductByGoodsID(tx, goodsID)
+	if err != nil {
+		return result, err
+	}
+	if p == nil || p.IsDeleted() {
+		result.SkippedDeleted = 1
+		if err := tx.Commit(); err != nil {
+			return CollectTaskResult{}, fmt.Errorf("提交事务失败: %w", err)
+		}
+		return result, nil
+	}
+
+	ok, err := repository.MarkRecollecting(tx, goodsID)
+	if err != nil {
+		return result, err
+	}
+	if !ok {
+		result.SkippedCollecting = 1
+		if wait, ok := retryWaitFor(p.UpdatedAt); ok {
+			result.RetryWaitText = formatRetryWait(wait)
+		}
+		if err := tx.Commit(); err != nil {
+			return CollectTaskResult{}, fmt.Errorf("提交事务失败: %w", err)
+		}
+		return result, nil
+	}
+
+	if err := repository.InsertCollectTaskForClient(
+		tx, newCollectTaskID(), p.GoodsID, p.URL, clientID); err != nil {
+		return result, err
+	}
+	result.Created = 1
+	if err := tx.Commit(); err != nil {
+		return CollectTaskResult{}, fmt.Errorf("提交事务失败: %w", err)
+	}
+	return result, nil
+}
+
 func createPddCollectTasks(db *sql.DB, goodsIDs []string, clientID, visibleUserID string) (CollectTaskResult, error) {
 	var result CollectTaskResult