import { NextResponse } from 'next/server';
import { requireUser } from '@/lib/session';
import { engine } from '@/lib/engine';

export async function GET(_, { params }) {
  const user = await requireUser();
  if (!user) return NextResponse.json({ error: 'Unauthorized' }, { status: 401 });
  try {
    const { id } = await params;
    const channel = await engine.getChannel(user.id, id);
    return NextResponse.json(channel);
  } catch (err) {
    return NextResponse.json({ error: err.message }, { status: 500 });
  }
}

export async function PATCH(req, { params }) {
  const user = await requireUser();
  if (!user) return NextResponse.json({ error: 'Unauthorized' }, { status: 401 });
  try {
    const { id } = await params;
    const body = await req.json();
    const channel = await engine.updateChannel(user.id, id, body);
    return NextResponse.json(channel);
  } catch (err) {
    return NextResponse.json({ error: err.message }, { status: 500 });
  }
}

export async function DELETE(_, { params }) {
  const user = await requireUser();
  if (!user) return NextResponse.json({ error: 'Unauthorized' }, { status: 401 });
  try {
    const { id } = await params;
    await engine.deleteChannel(user.id, id);
    return NextResponse.json({ ok: true });
  } catch (err) {
    return NextResponse.json({ error: err.message }, { status: 500 });
  }
}