import assert from 'node:assert/strict';
import { spawn } from 'node:child_process';
import { access, cp, readFile } from 'node:fs/promises';
import path from 'node:path';
import test from 'node:test';

const projectRoot = path.resolve('.');
const standaloneRoot = path.join(projectRoot, '.next', 'standalone');
const port = 43217;
const origin = `http://127.0.0.1:${port}`;

async function waitForServer(process, getLogs) {
  const deadline = Date.now() + 60_000;
  while (Date.now() < deadline) {
    if (process.exitCode !== null) throw new Error('standalone server exited early');
    try {
      const response = await fetch(origin, { signal: AbortSignal.timeout(10_000) });
      if (response.ok) return;
    } catch {}
    await new Promise((resolve) => setTimeout(resolve, 150));
  }
  throw new Error(`standalone server did not become ready\n${getLogs()}`);
}

test('the standalone server renders both locales and optimizes local images', async (t) => {
  await access(path.join(standaloneRoot, 'server.js'));
  await cp(path.join(projectRoot, 'public'), path.join(standaloneRoot, 'public'), { recursive: true });
  await cp(
    path.join(projectRoot, '.next', 'static'),
    path.join(standaloneRoot, '.next', 'static'),
    { recursive: true },
  );

  const server = spawn(process.execPath, ['server.js'], {
    cwd: standaloneRoot,
    env: { ...process.env, HOSTNAME: '127.0.0.1', PORT: String(port) },
    stdio: ['ignore', 'pipe', 'pipe'],
  });
  let serverLogs = '';
  server.stdout.on('data', (chunk) => { serverLogs += chunk; });
  server.stderr.on('data', (chunk) => { serverLogs += chunk; });
  t.after(() => server.kill());
  await waitForServer(server, () => serverLogs);

  const [englishResponse, persianResponse] = await Promise.all([
    fetch(`${origin}/`),
    fetch(`${origin}/fa`),
  ]);
  assert.equal(englishResponse.status, 200);
  assert.equal(persianResponse.status, 200);

  const [englishHtml, persianHtml] = await Promise.all([
    englishResponse.text(),
    persianResponse.text(),
  ]);
  assert.match(englishHtml, /<html[^>]*lang="en"[^>]*dir="ltr"/i);
  assert.match(englishHtml, /href="\/fa"/i);
  assert.match(englishHtml, /hreflang="fa"/i);
  assert.match(englishHtml, />Software Engineer</);
  assert.doesNotMatch(englishHtml, /id="site-loader"/);
  assert.match(persianHtml, /<html[^>]*lang="fa"[^>]*dir="rtl"/i);
  assert.match(persianHtml, /سلام، من امیرحسین خلیلی هستم/);

  const staticAsset = englishHtml.match(/(?:src|href)="(\/_next\/static\/[^"?#]+)/)?.[1];
  assert.ok(staticAsset, 'expected a built static asset');
  assert.equal((await fetch(`${origin}${staticAsset}`)).status, 200);

  const optimized = await fetch(
    `${origin}/_next/image?url=%2Fimages%2Favatar.png&w=256&q=75`,
    { headers: { Accept: 'image/webp' } },
  );
  assert.equal(optimized.status, 200);
  assert.equal(optimized.headers.get('content-type'), 'image/webp');
  assert.match(optimized.headers.get('cache-control') ?? '', /max-age=/);
});

test('Persian source copy uses standard characters and punctuation', async () => {
  const localizedFiles = [
    'src/i18n/content.ts',
    'src/data/projects.ts',
    'src/data/experience.ts',
    'src/data/education.ts',
    'src/data/milestones.ts',
  ];
  const source = (
    await Promise.all(localizedFiles.map((file) => readFile(file, 'utf8')))
  ).join('\n');

  assert.doesNotMatch(source, /[يك]/, 'use Persian ی and ک instead of Arabic forms');
  assert.doesNotMatch(source, /[—–]/, 'use Persian punctuation instead of em/en dashes');
});