릴리스: v1.4.19 템플릿 아이템 삭제 영향 경고 및 보존 정책 정리

backend/src/db.js

@@ -1413,35 +1413,35 @@ async function updateImageAssetLabel(assetId, label) {
   return mapImageAssetRow(rows[0])
 }
 
+async function countTierListsUsingGameItem(itemId) {
+  if (!itemId) return { totalCount: 0, publicCount: 0, privateCount: 0 }
+
+  const rows = await query(
+    `
+      SELECT id, is_public, groups_json, pool_json
+      FROM tierlists
+    `
+  )
+
+  let totalCount = 0
+  let publicCount = 0
+  let privateCount = 0
+
+  rows.forEach((row) => {
+    const groups = parseJson(row.groups_json, [])
+    const pool = parseJson(row.pool_json, [])
+    const inGroups = groups.some((group) => (group?.itemIds || []).includes(itemId))
+    const inPool = pool.some((item) => item?.id === itemId)
+    if (!inGroups && !inPool) return
+    totalCount += 1
+    if (row.is_public) publicCount += 1
+    else privateCount += 1
+  })
+
+  return { totalCount, publicCount, privateCount }
+}
+
 async function deleteGameItem(itemId) {
-  const gameItemRows = await query('SELECT topic_id FROM topic_items WHERE id = ? LIMIT 1', [itemId])
-  const gameId = gameItemRows[0]?.topic_id
-
-  if (gameId) {
-    const tierListRows = await query(
-      `
-        SELECT id, author_id, topic_id, title, description, is_public, groups_json, pool_json, created_at, updated_at
-        FROM tierlists
-        WHERE topic_id = ?
-      `,
-      [gameId]
-    )
-
-    for (const row of tierListRows) {
-      const tierList = mapTierListRow(row)
-      const nextGroups = (tierList.groups || []).map((group) => ({
-        ...group,
-        itemIds: (group.itemIds || []).filter((id) => id !== itemId),
-      }))
-      const nextPool = (tierList.pool || []).filter((item) => item.id !== itemId)
-
-      await query(
-        'UPDATE tierlists SET groups_json = ?, pool_json = ?, updated_at = ? WHERE id = ?',
-        [serializeJson(nextGroups), serializeJson(nextPool), now(), tierList.id]
-      )
-    }
-  }
-
   await query('DELETE FROM topic_items WHERE id = ?', [itemId])
 }
 
@@ -2560,6 +2560,7 @@ module.exports = {
   createGameItem,
   updateGameItemLabel,
   updateGameItemDisplayOrder,
+  countTierListsUsingGameItem,
   updateCustomItemLabel,
   updateImageAssetLabel,
   deleteGameItem,