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

export async function POST(request: NextRequest) {
  try {
    const { artist } = await requireArtist()

    const body = await request.json()
    const {
      title,
      description,
      audioUrl,
      coverUrl,
      duration,
      waveformUrl,
      albumId,
      genreIds,
      isPublic = true,
    } = body

    if (!title || !audioUrl || !duration) {
      return NextResponse.json(
        { error: 'Title, audioUrl, and duration are required' },
        { status: 400 }
      )
    }

    const slug = slugify(title)

    const song = await prisma.song.create({
      data: {
        artistId: artist.id,
        title,
        slug,
        description,
        audioUrl,
        coverUrl,
        duration,
        waveformUrl,
        albumId,
        isPublic,
        genres: genreIds
          ? {
              create: genreIds.map((genreId: string) => ({
                genreId,
              })),
            }
          : undefined,
      },
      include: {
        artist: {
          select: {
            id: true,
            name: true,
            slug: true,
            avatarUrl: true,
            verified: true,
          },
        },
        album: {
          select: {
            id: true,
            title: true,
            slug: true,
            coverUrl: true,
          },
        },
        genres: {
          include: {
            genre: true,
          },
        },
      },
    })

    return NextResponse.json(song, { status: 201 })
  } catch (error) {
    if (error instanceof Error && error.message === 'Unauthorized') {
      return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
    }
    if (error instanceof Error && error.message === 'Artist profile required') {
      return NextResponse.json({ error: 'Artist profile required' }, { status: 403 })
    }
    console.error('Error uploading song:', error)
    return NextResponse.json({ error: 'Failed to upload song' }, { status: 500 })
  }
}