const test = require('node:test');
const assert = require('node:assert/strict');
const fs = require('node:fs');

require('../src/common');

const timetableRegionSource = fs.readFileSync(require.resolve('../src/player/regions/timetable.js'), 'utf8');

const {
  mediaKind,
  normalizeSlide,
  renderEditorJsContent,
  renderHtmlRegionContent,
  sanitizeRichText
} = require('../src/player/render-helpers');

test('mediaKind classifies player media by extension', () => {
  assert.equal(mediaKind('poster.PNG'), 'image');
  assert.equal(mediaKind('intro.mp4'), 'video');
  assert.equal(mediaKind('manual.pdf'), 'pdf');
  assert.equal(mediaKind('notes.txt'), 'file');
});

test('sanitizeRichText strips unsafe content but preserves allowed markup', () => {
  const html = '<div class="wrap"><a href="https://example.com" target="_blank">Link</a><script>alert(1)</script><span style="color:red">Text</span><table class="grid"><colgroup><col span="1" style="width:50%"><col span="1" style="width:50%"></colgroup><thead><tr><th scope="col">Name</th><th scope="col">Value</th></tr></thead><tbody><tr><td>Alpha</td><td>Beta</td></tr></tbody></table><img src="/media/uploads/photo.png" alt="Photo" loading="lazy" onerror="alert(1)"></div>';

  assert.equal(
    sanitizeRichText(html),
    '<div class="wrap"><a href="https://example.com" target="_blank" rel="noreferrer noopener">Link</a><span style="color:red">Text</span><table class="grid"><colgroup><col span="1" style="width:50%"><col span="1" style="width:50%"></colgroup><thead><tr><th scope="col">Name</th><th scope="col">Value</th></tr></thead><tbody><tr><td>Alpha</td><td>Beta</td></tr></tbody></table><img src="/media/uploads/photo.png" alt="Photo" loading="lazy"></div>'
  );
});

test('normalizeSlide normalizes nested content without mutating the source', () => {
  const slide = {
    id: 12,
    content: {
      hero: {
        value: '{"headline":"Hello"}',
        font_family: '  Open Sans! ',
        font_size: '42',
        font_color: 'not-a-color',
        type: 'text'
      },
      footer: 'plain text'
    }
  };

  const normalized = normalizeSlide(slide);

  assert.notEqual(normalized.content, slide.content);
  assert.deepEqual(normalized.content.hero, {
    value: { headline: 'Hello' },
    font_family: '  Open Sans! ',
    font_size: '42',
    font_color: 'not-a-color',
    type: 'text'
  });
  assert.deepEqual(normalized.content.footer, {
    type: 'text',
    value: 'plain text'
  });
  assert.deepEqual(slide.content.hero, {
    value: '{"headline":"Hello"}',
    font_family: '  Open Sans! ',
    font_size: '42',
    font_color: 'not-a-color',
    type: 'text'
  });
});

test('renderEditorJsContent sanitizes editor blocks and wraps legacy text', () => {
  const editorJson = {
    blocks: [
      { type: 'header', data: { level: 2, text: '<strong>Title</strong><script>bad()</script>' } },
      { type: 'paragraph', data: { text: '<a href="javascript:alert(1)">bad</a><em>ok</em>' } },
      { type: 'list', data: { style: 'ordered', items: ['One', { text: '<span>Two</span>' }] } }
    ]
  };

  assert.equal(
    renderEditorJsContent(editorJson),
    '<h2><strong>Title</strong></h2><p><a>bad</a><em>ok</em></p><ol style="list-style-type:decimal;padding-left:1.4em;"><li>One</li><li><span>Two</span></li></ol>'
  );
  assert.equal(renderEditorJsContent('plain text'), '<p>plain text</p>');
});

test('timetable region registers the timetable type', () => {
  assert.ok(timetableRegionSource.includes("registry.register('timetable'"));
  assert.ok(timetableRegionSource.includes("sanitizeRichText(substituteTimetableVariables(value"));
});

test('shared iframe renderers size preview content explicitly', () => {
  const playerHtmlRegionSource = fs.readFileSync(require.resolve('../src/player/regions/html.js'), 'utf8');
  const playerWebpageRegionSource = fs.readFileSync(require.resolve('../src/player/regions/webpage.js'), 'utf8');
  const playerRenderHelpersSource = fs.readFileSync(require.resolve('../src/player/render-helpers.js'), 'utf8');
  const slideThumbnailPreviewSource = fs.readFileSync(require.resolve('../src/web/lib/media/slide-thumbnail-preview.js'), 'utf8');
  const slideThumbnailsSource = fs.readFileSync(require.resolve('../src/web/lib/media/slide-thumbnails.js'), 'utf8');

  assert.ok(playerHtmlRegionSource.includes('style="width:100%;height:100%;border:0;display:block;background:transparent;overflow:hidden;"'));
  assert.ok(playerWebpageRegionSource.includes('style="width:100%;height:100%;border:0;display:block;background:#fff;overflow:hidden;"'));
  assert.ok(playerRenderHelpersSource.includes('style="width:100%;height:100%;border:0;display:block;background:transparent;overflow:hidden;"'));
  assert.ok(slideThumbnailPreviewSource.includes('slide-preview-webpage-region'));
  assert.ok(slideThumbnailPreviewSource.includes('style="width:100%;height:100%;border:0;display:block;background:transparent;overflow:hidden;"'));
  assert.ok(slideThumbnailsSource.includes('slide-preview-webpage-placeholder'));
  assert.ok(slideThumbnailsSource.includes('style="width:100%;height:100%;border:0;display:block;background:transparent;overflow:hidden;"'));
});

test('html region helpers unwrap object-shaped values before rendering', () => {
  const rendered = renderHtmlRegionContent({ html: '<div>Hi</div>' });

  assert.match(rendered, /srcdoc="&lt;!doctype html&gt;&lt;html&gt;&lt;head&gt;&lt;style&gt;html,body\{margin:0;width:100%;height:100%;overflow:hidden;background:transparent;\}&lt;\/style&gt;&lt;\/head&gt;&lt;body&gt;&lt;div&gt;Hi&lt;\/div&gt;&lt;\/body&gt;&lt;\/html&gt;"/);
  assert.doesNotMatch(rendered, /\[object Object\]/);
});