import fs from 'fs'
import { NextRequest, NextResponse } from 'next/server'
import { getLibrary, resolveLibraryRoot, resolveAndJail } from '@/lib/libraries'
import { gamesFromDb } from '@/lib/games'
import { requireLibraryAccess, requireAdmin } from '@/lib/auth'
import { removeAllAssignmentsForItem } from '@/lib/tags'
import { getDb } from '@/lib/db'

export async function GET(request: NextRequest) {
  const { searchParams } = request.nextUrl
  const libraryId = searchParams.get('libraryId')

  if (!libraryId) {
    return NextResponse.json({ error: 'Missing libraryId' }, { status: 400 })
  }

  const auth = await requireLibraryAccess(request, libraryId)
  if (auth instanceof NextResponse) return auth

  const library = getLibrary(libraryId)
  if (!library) {
    return NextResponse.json({ error: 'Library not found' }, { status: 404 })
  }
  if (library.type !== 'games') {
    return NextResponse.json({ error: 'Library is not a games library' }, { status: 400 })
  }

  return NextResponse.json(gamesFromDb(libraryId))
}

export async function DELETE(request: NextRequest) {
  const auth = await requireAdmin(request)
  if (auth instanceof NextResponse) return auth

  const { searchParams } = request.nextUrl
  const libraryId = searchParams.get('libraryId')
  const gameId = searchParams.get('gameId')

  if (!libraryId || !gameId) {
    return NextResponse.json({ error: 'Missing libraryId or gameId' }, { status: 400 })
  }

  const library = getLibrary(libraryId)
  if (!library) {
    return NextResponse.json({ error: 'Library not found' }, { status: 404 })
  }
  if (library.type !== 'games') {
    return NextResponse.json({ error: 'Library is not a games library' }, { status: 400 })
  }

  const root = resolveLibraryRoot(library)
  const dirName = decodeURIComponent(gameId)

  let gameDir: string
  try {
    gameDir = resolveAndJail(root, dirName)
  } catch {
    return NextResponse.json({ error: 'Invalid game path' }, { status: 400 })
  }

  try {
    fs.rmSync(gameDir, { recursive: true, force: true })
  } catch {
    return NextResponse.json({ error: 'Failed to delete game directory' }, { status: 500 })
  }

  const itemKey = `${libraryId}:game:${gameId}`
  removeAllAssignmentsForItem(itemKey)
  getDb().prepare('DELETE FROM media_items WHERE item_key = ?').run(itemKey)

  return new NextResponse(null, { status: 204 })
}