import { test } from 'node:test';
import assert from 'node:assert/strict';
import { buildTopicContent } from './topicMarkdown';

test('a URL with underscores is sent verbatim (#262)', () => {
  const t = 'Rules: https://wiki.lotusguild.org/en/server_rules_and_faq';
  assert.deepEqual(buildTopicContent(t), { topic: t });
});

test('a markdown link keeps its underscored URL in both fields (#262)', () => {
  const c = buildTopicContent('[Our wiki](https://wiki.example.org/my_cool_page)');
  assert.ok('formatted_body' in c);
  assert.match(c.formatted_body, /href="https:\/\/wiki\.example\.org\/my_cool_page"/);
  assert.equal(c.topic, 'Our wiki (https://wiki.example.org/my_cool_page)');
});

test('room aliases and user IDs with underscores are untouched (#262)', () => {
  for (const t of [
    'Join #my_room_name:matrix.org',
    'Ask @some_user_x:matrix.org',
    'see snake_case_word',
  ]) {
    assert.deepEqual(buildTopicContent(t), { topic: t });
  }
});

test('emphasis still works at word boundaries', () => {
  const c = buildTopicContent('this is _really_ *great* and **bold**');
  assert.ok('formatted_body' in c);
  assert.match(c.formatted_body, /<i data-md="_">really<\/i>/);
  assert.match(c.formatted_body, /<i data-md="\*">great<\/i>/);
  assert.match(c.formatted_body, /<strong data-md="\*\*">bold<\/strong>/);
  assert.equal(c.topic, 'this is really great and bold');
});

test('emphasis around an alias keeps the alias intact', () => {
  const c = buildTopicContent('**Join #my_room:matrix.org**');
  assert.ok('formatted_body' in c);
  assert.match(c.formatted_body, /<strong data-md="\*\*">Join #my_room:matrix\.org<\/strong>/);
  assert.equal(c.topic, 'Join #my_room:matrix.org');
});

test('inline code keeps its underscores and no backslashes appear', () => {
  const c = buildTopicContent('run `a_b_c` now');
  assert.ok('formatted_body' in c);
  assert.match(c.formatted_body, /<code data-md="`">a_b_c<\/code>/);
  assert.equal(c.topic, 'run a_b_c now');
});

test('a double quote in a link target cannot break out of the attribute (#262)', () => {
  const c = buildTopicContent('[x](https://a" onclick="alert(1))');
  assert.ok('formatted_body' in c);
  assert.doesNotMatch(c.formatted_body, /" onclick="/);
});

test('HTML in the topic is escaped, and the plain topic shows it as typed', () => {
  const c = buildTopicContent('**<b>hi</b> & bye**');
  assert.ok('formatted_body' in c);
  assert.match(c.formatted_body, /&lt;b&gt;hi&lt;\/b&gt; &amp; bye/);
  assert.equal(c.topic, '<b>hi</b> & bye');
});

test('line breaks become <br> and survive in the plain topic', () => {
  const c = buildTopicContent('**Rules**\nBe nice');
  assert.ok('formatted_body' in c);
  assert.equal(c.formatted_body, '<strong data-md="**">Rules</strong><br>Be nice');
  assert.equal(c.topic, 'Rules\nBe nice');
});

test('plain text with no markdown is sent as typed', () => {
  assert.deepEqual(buildTopicContent("It's <fun> & games"), { topic: "It's <fun> & games" });
});