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

async function requireAdmin() {
  const session = await auth()
  if (!session?.user?.id) return null
  const user = await prisma.user.findUnique({ where: { id: session.user.id }, select: { role: true } })
  if (user?.role !== 'ADMIN') return null
  return session.user.id
}

export async function GET() {
  const userId = await requireAdmin()
  if (!userId) return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })

  const notes = await prisma.note.findMany({
    where: { isPublic: true, trashedAt: null },
    select: {
      id: true, title: true, publicSlug: true, publishedAt: true,
      user: { select: { name: true } },
    },
    orderBy: { publishedAt: 'desc' },
  })

  return NextResponse.json({ notes })
}

export async function DELETE(request: NextRequest) {
  const userId = await requireAdmin()
  if (!userId) return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })

  const { noteId } = await request.json()
  if (!noteId) return NextResponse.json({ error: 'noteId required' }, { status: 400 })

  await prisma.note.update({
    where: { id: noteId },
    data: { isPublic: false, publicSlug: null, publishedAt: null },
  })

  // Notify the owner
  const note = await prisma.note.findUnique({
    where: { id: noteId },
    select: { userId: true, publicSlug: true },
  })
  if (note) {
    await prisma.notification.create({
      data: {
        userId: note.userId,
        type: 'publish_revoked',
        title: 'Publication retirée par un administrateur',
        message: 'Votre note a été dépubliée par la modération. Si vous pensez qu\'il s\'agit d\'une erreur, contactez le support.',
      },
    }).catch(() => {})
  }

  return NextResponse.json({ success: true })
}