import { chromium, type Browser, type Page } from 'playwright';
import 'dotenv/config';

function requireEnv(key: string): string {
  const value = process.env[key];
  if (!value) throw new Error(`Missing required env var: ${key}`);
  return value;
}

export const GITEA_URL = requireEnv('GITEA_URL');
export const USERNAME = requireEnv('GITEA_USERNAME');
const PASSWORD = requireEnv('GITEA_PASSWORD');

export interface Session {
  browser: Browser;
  page: Page;
}

export async function createSession(): Promise<Session> {
  const browser = await chromium.launch({ headless: true });
  const page = await browser.newPage();

  await page.goto(`${GITEA_URL}/user/login`, { waitUntil: 'load' });
  await page.fill('input[name="user_name"]', USERNAME);
  await page.fill('input[name="password"]', PASSWORD);

  await Promise.all([
    page.waitForNavigation({ waitUntil: 'load' }),
    page.getByRole('button', { name: /sign in/i }).click(),
  ]);

  if (page.url().includes('change_password')) {
    await page.fill('input[name="password"]', PASSWORD);
    await page.fill('input[name="retype"]', PASSWORD);
    await Promise.all([
      page.waitForNavigation({ waitUntil: 'load' }),
      page.getByRole('button', { name: /update password/i }).click(),
    ]);
  }

  const loggedIn = (await page.$('.avatar')) !== null;
  if (!loggedIn) {
    await browser.close();
    throw new Error('Login failed');
  }

  return { browser, page };
}