const test = require('node:test');
const assert = require('node:assert/strict');
const fs = require('node:fs');
const path = require('node:path');
const vm = require('node:vm');
const { JSDOM } = require('jsdom');
const { marked } = require('marked');

const read = file => fs.readFileSync(path.join(__dirname, '..', file), 'utf8');

function ui(t) {
  const dom = new JSDOM('<div id="assistant-tab">' + read('public/components/assistant.html') + '</div>', { url: 'https://example.test', runScripts: 'outside-only' });
  const window = dom.window;
  window.eval(read('public/js/accountBoundary.js'));
  assert.equal(window.AccountBoundary.enter({ id: 'synthetic-rendering-owner' }, true), true);
  const style = window.document.createElement('style');
  style.textContent = read('public/css/assistant.css');
  window.document.head.appendChild(style);
  window.marked = marked;
  window.DOMPurify = require('dompurify')(window);
  window.matchMedia = () => ({ matches: true });
  const context = { window, document: window.document, console, URL, Blob, TextDecoder, AbortController,
    setTimeout() {}, clearTimeout() {}, showToast() {}, EMPTY_PROMPT_SETS: [[]],
    createAssistantImageStore: () => ({ clear() {}, renderGeneratedImage: () => '' }),
    fetchSavedAssistantChats: async () => ({ success: true, chats: [] }),
    saveAssistantChat: async () => ({ success: true }) };
  vm.createContext(context);
  for (const file of ['assistant/citations.js', 'assistant/sources.js', 'assistant/sharing.js', 'generatedImages.js', 'assistant/export.js', 'clinicalAssistant.js']) {
    vm.runInContext(read('public/js/' + file).replace(/^import[\s\S]*?from ['"][^'"]+['"];\s*/gm, '').replace(/^export /gm, ''), context);
  }
  t.after(() => window.close());
  return { context, document: window.document, window };
}

function userBubble(app) {
  return app.document.querySelector('.assistant-msg.user .assistant-bubble');
}

test('user messages render markdown while the raw transcript stays canonical', t => {
  const app = ui(t);
  const md = '**Bold** plan\n\n- item one\n- item two\n\n`inline code` and 2+2=4';
  app.context.appendMessage('user', md);
  const bubble = userBubble(app);
  assert.match(bubble.innerHTML, /<strong>Bold<\/strong>/);
  assert.match(bubble.innerHTML, /<li>item one<\/li>/);
  assert.match(bubble.innerHTML, /<li>item two<\/li>/);
  assert.match(bubble.innerHTML, /<code>inline code<\/code>/);
  assert.equal(app.context.messages[0].content, md, 'raw user text is stored unchanged');
  assert.equal(app.context.messages[0].role, 'user');
  assert.deepEqual(JSON.parse(JSON.stringify(app.context.messages[0].sources)), [], 'user turns carry no source map');
  assert.equal(bubble.querySelector('.assistant-cite'), null, 'user text cannot create citation links');
});

test('user tables render with the OWUI wrapper and keyboard-scroll accessibility attributes', t => {
  const app = ui(t);
  app.context.appendMessage('user', '| Item | Dose |\n| :--- | ---: |\n| Alpha | 2 |');
  const scroll = userBubble(app).querySelector('.assistant-table-scroll');
  assert.ok(scroll, 'user table gets the shared wrapper');
  assert.equal(scroll.getAttribute('tabindex'), '0');
  assert.equal(scroll.getAttribute('role'), 'region');
  assert.equal(scroll.getAttribute('aria-label'), 'Scrollable table');
  assert.equal(scroll.querySelectorAll('tbody tr').length, 1);
});

test('inline markdown images respect the safe allowlist: own assets and data URIs only', t => {
  const app = ui(t);
  const id = '12345678-1234-1234-1234-123456789abc';
  app.context.appendMessage('user', '![chart](/api/generated-images/' + id + ') and ![inline](data:image/png;base64,iVBORw0KGgo=)');
  const imgs = userBubble(app).querySelectorAll('img');
  assert.equal(imgs.length, 2);
  assert.ok(imgs[0].getAttribute('src').endsWith('/api/generated-images/' + id));
  assert.ok(imgs[1].getAttribute('src').startsWith('data:image/png;base64,'));
  app.context.appendMessage('user', '![evil](https://evil.example/x.png) and a normal [link](https://example.test/page)');
  const bubbles = app.document.querySelectorAll('.assistant-msg.user .assistant-bubble');
  assert.equal(bubbles[1].querySelectorAll('img').length, 0, 'external image URLs never render as images');
  assert.match(bubbles[1].textContent, /evil/);
  assert.equal(bubbles[1].querySelector('a[href="https://example.test/page"]') !== null, true, 'ordinary links stay links');
});

test('assistant markdown rendering and citation chips are unchanged by user-markdown mode', t => {
  const app = ui(t);
  const sources = [{ title: 'Synthetic A', page: 7 }];
  app.context.appendMessage('user', 'What is the dose [1]?');
  app.context.appendMessage('assistant', 'Dose [1].', sources);
  const assistantBubble = app.document.querySelector('.assistant-msg.assistant .assistant-bubble');
  assert.ok(assistantBubble.querySelector('.assistant-cite[data-source-number="1"]'));
  assert.equal(userBubble(app).querySelector('.assistant-cite'), null);
  assert.deepEqual(app.context.messages[1].sources, sources, 'per-turn source maps preserved');
});