import assert from 'node:assert/strict';
import { mkdir, mkdtemp, rm, writeFile } from 'node:fs/promises';
import { tmpdir } from 'node:os';
import { join } from 'node:path';
import test from 'node:test';
import { checkRenderedOutput } from '../scripts/lib/rendered-output.mjs';

async function withRenderedSite(run) {
  const root = await mkdtemp(join(tmpdir(), 'incognito-rendered-'));
  try {
    await run(root);
  } finally {
    await rm(root, { recursive: true, force: true });
  }
}

test('reports every published HTML page that does not contain exactly one H1', async () => {
  await withRenderedSite(async (root) => {
    await mkdir(join(root, 'about'), { recursive: true });
    await mkdir(join(root, 'empty'), { recursive: true });
    await writeFile(join(root, 'index.html'), '<main><h1>Home</h1></main>');
    await writeFile(join(root, 'about/index.html'), '<main><h1>About</h1><h1>Duplicate</h1></main>');
    await writeFile(join(root, 'empty/index.html'), '<main><p>No heading</p></main>');
    await writeFile(join(root, '404.html'), '<main><p>Generated error page</p></main>');

    const result = await checkRenderedOutput({ distRoot: root });

    assert.equal(result.htmlFilesChecked, 3);
    assert.deepEqual(result.headingIssues, [
      { file: 'about/index.html', h1Count: 2 },
      { file: 'empty/index.html', h1Count: 0 },
    ]);
  });
});

test('reports any to-be-studied path that reaches built output', async () => {
  await withRenderedSite(async (root) => {
    await writeFile(join(root, 'index.html'), '<main><h1>Home</h1></main>');
    await mkdir(join(root, 'to-be-studied'), { recursive: true });
    await writeFile(join(root, 'to-be-studied/leak.txt'), 'unpublished');

    const result = await checkRenderedOutput({ distRoot: root });

    assert.deepEqual(result.unpublishedPaths, ['to-be-studied/leak.txt']);
  });
});