import assert from 'node:assert/strict';
import { test } from 'node:test';
import { originalUrlFor, platformByPrefix, platformForUrl, stripTracking } from '../src/platforms/index.ts';

function rebuild(prefix: string, pathRest: string, search = ''): string {
  const spec = platformByPrefix(prefix);
  assert.ok(spec, `no platform for /${prefix}`);
  return originalUrlFor(spec, pathRest, search);
}

test('each prefix rebuilds its canonical original URL', () => {
  assert.equal(rebuild('x', 'user/status/123'), 'https://x.com/user/status/123');
  assert.equal(rebuild('ig', 'p/ABC123/'), 'https://www.instagram.com/p/ABC123/');
  assert.equal(rebuild('threads', '@user/post/XYZ'), 'https://www.threads.com/@user/post/XYZ');
  assert.equal(rebuild('bsky', 'profile/a.bsky.social/post/abc'),
    'https://bsky.app/profile/a.bsky.social/post/abc');
  assert.equal(rebuild('tiktok', '@user/video/789'), 'https://www.tiktok.com/@user/video/789');
});

test('a bare TikTok code rebuilds as a share link, not a broken post path', () => {
  // `vm.tiktok.com/ZGJabc/` loses its subdomain in the rewrite, so a single
  // opaque segment has to be recognised as a share code.
  assert.equal(rebuild('tiktok', 'ZGJabc123/'), 'https://vm.tiktok.com/ZGJabc123/');
});

test('tracking parameters are dropped, real ones are kept', () => {
  assert.equal(rebuild('ig', 'p/ABC/', '?igsh=Zm9v&utm_source=ig_web'), 'https://www.instagram.com/p/ABC/');
  assert.equal(rebuild('x', 'user/status/1', '?s=20&t=abc'), 'https://x.com/user/status/1');
  assert.equal(rebuild('bsky', 'profile/a/post/b', '?foo=bar'), 'https://bsky.app/profile/a/post/b?foo=bar');
});

test('fragments are dropped so the cache does not split on them', () => {
  assert.equal(stripTracking(new URL('https://x.com/a/status/1#top')).href, 'https://x.com/a/status/1');
});

test('a pasted URL routes to its platform, including the old hostnames', () => {
  assert.equal(platformForUrl('https://twitter.com/a/status/1')?.id, 'x');
  assert.equal(platformForUrl('https://mobile.x.com/a/status/1')?.id, 'x');
  assert.equal(platformForUrl('https://www.threads.net/@a/post/b')?.id, 'threads');
  assert.equal(platformForUrl('https://vm.tiktok.com/ZGJabc/')?.id, 'tiktok');
  assert.equal(platformForUrl('https://example.com/nope'), undefined);
  assert.equal(platformForUrl('not a url'), undefined);
});