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

export async function GET(request: NextRequest) {
  try {
    const user = await requireAuth()

    const playlists = await prisma.playlist.findMany({
      where: {
        userId: user.id,
      },
      include: {
        _count: {
          select: {
            songs: true,
          },
        },
      },
      orderBy: {
        updatedAt: 'desc',
      },
    })

    return NextResponse.json(playlists)
  } catch (error) {
    if (error instanceof Error && error.message === 'Unauthorized') {
      return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
    }
    console.error('Error fetching playlists:', error)
    return NextResponse.json({ error: 'Failed to fetch playlists' }, { status: 500 })
  }
}

export async function POST(request: NextRequest) {
  try {
    const user = await requireAuth()

    const body = await request.json()
    const { title, description, coverUrl, isPublic = true } = body

    if (!title) {
      return NextResponse.json({ error: 'Title is required' }, { status: 400 })
    }

    const slug = slugify(title)

    const playlist = await prisma.playlist.create({
      data: {
        userId: user.id,
        title,
        slug,
        description,
        coverUrl,
        isPublic,
      },
      include: {
        _count: {
          select: {
            songs: true,
          },
        },
      },
    })

    return NextResponse.json(playlist, { status: 201 })
  } catch (error) {
    if (error instanceof Error && error.message === 'Unauthorized') {
      return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
    }
    console.error('Error creating playlist:', error)
    return NextResponse.json({ error: 'Failed to create playlist' }, { status: 500 })
  }
}