feat: 支持蝦皮批量创建 PDD 采集任务 (#185)

admin/repository/shopee.go

@@ -301,6 +301,37 @@ func GetShopeeProductByGoodsID(q Execer, goodsID string) (*model.ShopeeProduct,
 	return &p, nil
 }
 
+// ListShopeePddLinksByGoodsIDs 批量读取蝦皮商品当前关联的 PDD 商品 ID。
+// 返回结果只包含仍存在的蝦皮商品；值为空表示商品存在但尚未关联 PDD。
+func ListShopeePddLinksByGoodsIDs(q Execer, goodsIDs []string) (map[string]string, error) {
+	links := make(map[string]string, len(goodsIDs))
+	if len(goodsIDs) == 0 {
+		return links, nil
+	}
+	placeholders := strings.TrimSuffix(strings.Repeat("?,", len(goodsIDs)), ",")
+	args := make([]any, len(goodsIDs))
+	for i, goodsID := range goodsIDs {
+		args[i] = goodsID
+	}
+	rows, err := q.Query(`SELECT goods_id, COALESCE(pdd_goods_id, '')
+		FROM shopee_products WHERE goods_id IN (`+placeholders+`)`, args...)
+	if err != nil {
+		return nil, fmt.Errorf("批量查询蝦皮商品 PDD 关联失败: %w", err)
+	}
+	defer rows.Close()
+	for rows.Next() {
+		var shopeeGoodsID, pddGoodsID string
+		if err := rows.Scan(&shopeeGoodsID, &pddGoodsID); err != nil {
+			return nil, fmt.Errorf("读取蝦皮商品 PDD 关联失败: %w", err)
+		}
+		links[shopeeGoodsID] = pddGoodsID
+	}
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("遍历蝦皮商品 PDD 关联失败: %w", err)
+	}
+	return links, nil
+}
+
 // UpdateShopeePddLink 更新蝦皮商品当前关联的 PDD 商品。
 // 调用方必须先在同一事务里保证 PDD 商品存在，避免留下悬空关联。
 func UpdateShopeePddLink(q Execer, shopeeGoodsID, pddGoodsID, pddURL string) error {