import { NextResponse } from 'next/server';
import { cookies } from 'next/headers';
import { createAdminClient } from '@/lib/supabase/admin';
import { verifyAdminTokenNode } from '@/lib/admin-auth';

export const runtime = 'nodejs';

async function checkAuth() {
  const cookieStore = await cookies();
  const token = cookieStore.get('admin_token')?.value;
  return token && verifyAdminTokenNode(token);
}

export async function GET() {
  if (!(await checkAuth())) {
    return NextResponse.json({ error: 'Unauthorized' }, { status: 401 });
  }

  const supabase = createAdminClient();
  const { data, error } = await supabase
    .from('ad_channels')
    .select('*')
    .order('created_at', { ascending: false });

  if (error) return NextResponse.json({ error: error.message }, { status: 500 });
  return NextResponse.json({ channels: data ?? [] });
}

export async function POST(request: Request) {
  if (!(await checkAuth())) {
    return NextResponse.json({ error: 'Unauthorized' }, { status: 401 });
  }

  let body: Record<string, unknown>;
  try {
    body = await request.json();
  } catch {
    return NextResponse.json({ error: '잘못된 요청 형식' }, { status: 400 });
  }

  const name = typeof body.name === 'string' && body.name.trim() ? body.name.trim() : null;

  if (!name) {
    return NextResponse.json({ error: '채널명을 입력해주세요.' }, { status: 400 });
  }

  const supabase = createAdminClient();
  const { data, error } = await supabase
    .from('ad_channels')
    .insert({
      name,
      url: typeof body.url === 'string' && body.url.trim() ? body.url.trim() : null,
      memo: typeof body.memo === 'string' && body.memo.trim() ? body.memo.trim() : null,
    })
    .select()
    .single();

  if (error) return NextResponse.json({ error: error.message }, { status: 500 });
  return NextResponse.json({ channel: data });
}