ditto/packages/ditto/utils/note.test.ts

import { DittoConf } from '@ditto/conf';
import { assertEquals } from '@std/assert';

import { contentToHtml, getCardUrl, getMediaLinks, removeTrailingTokens } from '@/utils/note.ts';
import { genEvent } from '@nostrify/nostrify/test';

Deno.test('contentToHtml', () => {
  const conf = new DittoConf(new Map());
  const html = contentToHtml('Hello, world!', [], { conf });

  assertEquals(html, 'Hello, world!');
});

Deno.test('contentToHtml parses URLs', () => {
  const conf = new DittoConf(new Map());
  const html = contentToHtml('check out my website: https://alexgleason.me', [], { conf });

  assertEquals(html, 'check out my website: <a href="https://alexgleason.me">https://alexgleason.me</a>');
});

Deno.test('contentToHtml parses bare URLs', () => {
  const conf = new DittoConf(new Map());
  const html = contentToHtml('have you seen ditto.pub?', [], { conf });

  assertEquals(html, 'have you seen <a href="http://ditto.pub">ditto.pub</a>?');
});

Deno.test('contentToHtml parses mentions with apostrophes', () => {
  const conf = new DittoConf(new Map());

  const html = contentToHtml(
    `did you see nostr:nprofile1qqsqgc0uhmxycvm5gwvn944c7yfxnnxm0nyh8tt62zhrvtd3xkj8fhgprdmhxue69uhkwmr9v9ek7mnpw3hhytnyv4mz7un9d3shjqgcwaehxw309ahx7umywf5hvefwv9c8qtmjv4kxz7gpzemhxue69uhhyetvv9ujumt0wd68ytnsw43z7s3al0v's speech?`,
    [{
      id: '0461fcbecc4c3374439932d6b8f11269ccdb7cc973ad7a50ae362db135a474dd',
      username: 'alex',
      acct: 'alex@gleasonator.dev',
      url: 'https://gleasonator.dev/@alex',
    }],
    { conf },
  );

  assertEquals(
    html,
    'did you see <span class="h-card"><a class="u-url mention" href="https://gleasonator.dev/@alex" rel="ugc">@<span>alex@gleasonator.dev</span></a></span>&apos;s speech?',
  );
});

Deno.test('contentToHtml parses mentions with commas', () => {
  const conf = new DittoConf(new Map());

  const html = contentToHtml(
    `Sim. Hi nostr:npub1q3sle0kvfsehgsuexttt3ugjd8xdklxfwwkh559wxckmzddywnws6cd26p and nostr:npub1gujeqakgt7fyp6zjggxhyy7ft623qtcaay5lkc8n8gkry4cvnrzqd3f67z, any chance to have Cobrafuma as PWA?`,
    [{
      id: '0461fcbecc4c3374439932d6b8f11269ccdb7cc973ad7a50ae362db135a474dd',
      username: 'alex',
      acct: 'alex@gleasonator.dev',
      url: 'https://gleasonator.dev/@alex',
    }, {
      id: '47259076c85f9240e852420d7213c95e95102f1de929fb60f33a2c32570c98c4',
      username: 'patrick',
      acct: 'patrick@patrickdosreis.com',
      url: 'https://gleasonator.dev/@patrick@patrickdosreis.com',
    }],
    { conf },
  );

  assertEquals(
    html,
    'Sim. Hi <span class="h-card"><a class="u-url mention" href="https://gleasonator.dev/@alex" rel="ugc">@<span>alex@gleasonator.dev</span></a></span> and <span class="h-card"><a class="u-url mention" href="https://gleasonator.dev/@patrick@patrickdosreis.com" rel="ugc">@<span>patrick@patrickdosreis.com</span></a></span>, any chance to have Cobrafuma as PWA?',
  );
});

Deno.test("contentToHtml doesn't parse invalid nostr URIs", () => {
  const conf = new DittoConf(new Map());
  const html = contentToHtml('nip19 has URIs like nostr:npub and nostr:nevent, etc.', [], { conf });
  assertEquals(html, 'nip19 has URIs like nostr:npub and nostr:nevent, etc.');
});

Deno.test('contentToHtml renders empty for non-profile nostr URIs', () => {
  const conf = new DittoConf(new Map());

  const html = contentToHtml(
    'nostr:nevent1qgsr9cvzwc652r4m83d86ykplrnm9dg5gwdvzzn8ameanlvut35wy3gpz3mhxue69uhhztnnwashymtnw3ezucm0d5qzqru8mkz2q4gzsxg99q7pdneyx7n8p5u0afe3ntapj4sryxxmg4gpcdvgce',
    [],
    { conf },
  );

  assertEquals(html, '');
});

Deno.test("contentToHtml doesn't fuck up links to my own post", () => {
  const conf = new DittoConf(new Map());

  const html = contentToHtml(
    'Check this post: https://gleasonator.dev/@alex@gleasonator.dev/posts/a8badb480d88f9e7b6a090342279ef47ed0e0a3989ed85f898dfedc6be94225f',
    [{
      id: '0461fcbecc4c3374439932d6b8f11269ccdb7cc973ad7a50ae362db135a474dd',
      username: 'alex',
      acct: 'alex@gleasonator.dev',
      url: 'https://gleasonator.dev/@alex',
    }],
    { conf },
  );

  assertEquals(
    html,
    'Check this post: <a href="https://gleasonator.dev/@alex@gleasonator.dev/posts/a8badb480d88f9e7b6a090342279ef47ed0e0a3989ed85f898dfedc6be94225f">https://gleasonator.dev/@alex@gleasonator.dev/posts/a8badb480d88f9e7b6a090342279ef47ed0e0a3989ed85f898dfedc6be94225f</a>',
  );
});

Deno.test('getMediaLinks', () => {
  const links = [
    { href: 'https://example.com/image.png' },
    { href: 'https://example.com/index.html' },
    { href: 'https://example.com/yolo' },
    { href: 'https://example.com/' },
  ];

  const mediaLinks = getMediaLinks(links);

  assertEquals(mediaLinks, [[
    ['url', 'https://example.com/image.png'],
    ['m', 'image/png'],
  ]]);
});

Deno.test('removeTrailingTokens with spaces', () => {
  const urls = new Set<string>([
    'https://ditto.pub/a.png',
    'https://ditto.pub/b.jpg',
  ]);

  const result = removeTrailingTokens(
    'hey!\n\nthis  is cool https://ditto.pub/a.png https://ditto.pub/b.jpg',
    urls,
  );

  assertEquals(result, 'hey!\n\nthis  is cool');
});

Deno.test('removeTrailingTokens with newlines', () => {
  const urls = new Set<string>([
    'https://ditto.pub/a.png',
    'https://ditto.pub/b.jpg',
  ]);

  const result = removeTrailingTokens(
    'Hey!\n\nthis is cool \n\nhttps://ditto.pub/a.png\nhttps://ditto.pub/b.jpg\n ',
    urls,
  );

  assertEquals(result, 'Hey!\n\nthis is cool');
});

Deno.test('removeTrailingTokens with only URLs', () => {
  const urls = new Set<string>([
    'https://ditto.pub/a.png',
    'https://ditto.pub/b.jpg',
  ]);

  const result = removeTrailingTokens(
    'https://ditto.pub/a.png https://ditto.pub/b.jpg',
    urls,
  );

  assertEquals(result, '');
});

Deno.test('removeTrailingTokens with just one URL', () => {
  const urls = new Set<string>(['https://ditto.pub/a.png']);
  const result = removeTrailingTokens('https://ditto.pub/a.png', urls);

  assertEquals(result, '');
});

Deno.test('getCardUrl', async (t) => {
  await t.step('returns undefined for an event with no URLs', () => {
    const result = getCardUrl(genEvent({ kind: 1, content: 'Hello, world!' }));
    assertEquals(result, undefined);
  });

  await t.step('returns the first URL for an event with a URL', () => {
    const result = getCardUrl(genEvent({ kind: 1, content: 'https://soapbox.pub' }));
    assertEquals(result, 'https://soapbox.pub');
  });

  await t.step('returns the first URL for an event with multiple URLs', () => {
    const result = getCardUrl(genEvent({ kind: 1, content: 'https://ditto.pub https://soapbox.pub' }));
    assertEquals(result, 'https://ditto.pub');
  });

  await t.step('returns the first non-media URL (by file extension) in an event without imeta tags', () => {
    const result = getCardUrl(genEvent({ kind: 1, content: 'https://i.nostr.build/video.mp4 https://ditto.pub' }));
    assertEquals(result, 'https://ditto.pub');
  });

  await t.step('returns the first non-media URL in an event with imeta tags', () => {
    const result = getCardUrl(genEvent({
      kind: 1,
      content: 'https://i.nostr.build/video https://ditto.pub',
      tags: [['imeta', 'url https://i.nostr.build/video']],
    }));

    assertEquals(result, 'https://ditto.pub');
  });

  await t.step('returns undefined in an event with multiple imeta tags and no other URLs', () => {
    const result = getCardUrl(genEvent({
      kind: 1,
      content: 'https://i.nostr.build/video https://ditto.pub',
      tags: [
        ['imeta', 'url https://i.nostr.build/video'],
        ['imeta', 'url https://ditto.pub'],
      ],
    }));

    assertEquals(result, undefined);
  });
});