import { NextRequest, NextResponse } from 'next/server'
import { prisma } from '@/lib/prisma'
import { requireAuth } from '@/lib/auth'

export async function DELETE(
  request: NextRequest,
  { params }: { params: Promise<{ id: string; songId: string }> }
) {
  try {
    const user = await requireAuth()
    const { id, songId } = await params

    const playlist = await prisma.playlist.findUnique({
      where: { id },
    })

    if (!playlist) {
      return NextResponse.json({ error: 'Playlist not found' }, { status: 404 })
    }

    if (playlist.userId !== user.id) {
      return NextResponse.json({ error: 'Unauthorized' }, { status: 403 })
    }

    const playlistSong = await prisma.playlistSong.findUnique({
      where: {
        playlistId_songId: {
          playlistId: id,
          songId,
        },
      },
    })

    if (!playlistSong) {
      return NextResponse.json({ error: 'Song not in playlist' }, { status: 404 })
    }

    await prisma.playlistSong.delete({
      where: {
        playlistId_songId: {
          playlistId: id,
          songId,
        },
      },
    })

    return NextResponse.json({ message: 'Song removed from playlist successfully' })
  } catch (error) {
    if (error instanceof Error && error.message === 'Unauthorized') {
      return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
    }
    console.error('Error removing song from playlist:', error)
    return NextResponse.json({ error: 'Failed to remove song from playlist' }, { status: 500 })
  }
}