import { getToken } from './token.js';
import { GithubError } from './client.js';

const BASE = 'https://api.github.com';

export async function restJson<T>(path: string): Promise<T> {
  const res = await fetch(`${BASE}${path}`, {
    headers: {
      authorization: `bearer ${getToken()}`,
      accept: 'application/vnd.github+json',
      'user-agent': 'pr-monitor',
    },
  });
  if (!res.ok) {
    throw new GithubError(`GitHub REST ${path}: ${res.status}`);
  }
  return res.json() as Promise<T>;
}

/** Download an artifact zip (follows the storage redirect). */
export async function restZip(path: string, maxBytes: number): Promise<Uint8Array | null> {
  const res = await fetch(`${BASE}${path}`, {
    headers: { authorization: `bearer ${getToken()}`, 'user-agent': 'pr-monitor' },
  });
  if (!res.ok) throw new GithubError(`GitHub REST ${path}: ${res.status}`);
  const buf = new Uint8Array(await res.arrayBuffer());
  if (buf.byteLength > maxBytes) return null;
  return buf;
}