tag mapping improvements

src/app/api/libraries/[id]/bulk-rename/route.ts

@@ -0,0 +1,70 @@
+import { NextRequest, NextResponse } from 'next/server'
+import { requireAdmin } from '@/lib/auth'
+import { getLibrary } from '@/lib/libraries'
+import { getDb } from '@/lib/db'
+
+export async function POST(
+  request: NextRequest,
+  { params }: { params: Promise<{ id: string }> },
+) {
+  const auth = await requireAdmin(request)
+  if (auth instanceof NextResponse) return auth
+
+  const { id: libraryId } = await params
+  const library = getLibrary(libraryId)
+  if (!library) {
+    return NextResponse.json({ error: 'Library not found' }, { status: 404 })
+  }
+  if (library.type !== 'comics') {
+    return NextResponse.json({ error: 'Only comics libraries support bulk rename' }, { status: 400 })
+  }
+
+  const body = await request.json()
+  const { pattern, preview } = body as { pattern: string; preview?: boolean }
+
+  if (!pattern || typeof pattern !== 'string') {
+    return NextResponse.json({ error: 'Pattern is required' }, { status: 400 })
+  }
+
+  // Validate regex
+  let regex: RegExp
+  try {
+    regex = new RegExp(pattern, 'g')
+  } catch {
+    return NextResponse.json({ error: 'Invalid regex pattern' }, { status: 400 })
+  }
+
+  const db = getDb()
+
+  const rows = db
+    .prepare(
+      `SELECT item_key, title FROM media_items
+       WHERE library_id = ? AND item_type IN ('comic_series', 'comic_issue')`
+    )
+    .all(libraryId) as { item_key: string; title: string }[]
+
+  const changes: { itemKey: string; oldTitle: string; newTitle: string }[] = []
+
+  for (const row of rows) {
+    // Reset lastIndex since we reuse the regex with 'g' flag
+    regex.lastIndex = 0
+    const newTitle = row.title.replace(regex, '').trim()
+    if (newTitle && newTitle !== row.title) {
+      changes.push({ itemKey: row.item_key, oldTitle: row.title, newTitle })
+    }
+  }
+
+  if (preview) {
+    return NextResponse.json({ changes })
+  }
+
+  // Apply
+  const stmt = db.prepare('UPDATE media_items SET title = ? WHERE item_key = ?')
+  db.transaction(() => {
+    for (const c of changes) {
+      stmt.run(c.newTitle, c.itemKey)
+    }
+  })()
+
+  return NextResponse.json({ updated: changes.length })
+}