import { describe, it, expect } from 'vitest';
import { extractFromJson } from '../../src/services/extractors/threads/json-extractor.js';
const jsonHtml = (obj: unknown) =>
``;
describe('threads json-extractor (media walk)', () => {
it('picks the highest-resolution video_versions entry plus meta', () => {
const html = jsonHtml({
code: 'ABC123',
caption: { text: 'my threads clip #cool' },
user: { username: 'tester', full_name: 'Test User' },
image_versions2: {
candidates: [
{
width: 320,
height: 568,
url: 'https://scontent.cdninstagram.com/lo.jpg',
},
{
width: 1080,
height: 1920,
url: 'https://scontent.cdninstagram.com/hi.jpg',
},
],
},
video_versions: [
{
type: 101,
width: 720,
height: 1280,
url: 'https://scontent.cdninstagram.com/720.mp4',
},
{
type: 102,
width: 1080,
height: 1920,
url: 'https://scontent.cdninstagram.com/1080.mp4',
},
],
});
const result = extractFromJson(html);
expect(result).not.toBeNull();
if (!result) return;
expect(result.formats).toHaveLength(1);
expect(result.formats[0]).toMatchObject({
format_id: 'hd',
url: 'https://scontent.cdninstagram.com/1080.mp4',
width: 1080,
height: 1920,
});
expect(result.title).toBe('my threads clip #cool');
expect(result.uploader).toBe('Test User');
expect(result.thumbnail).toBe('https://scontent.cdninstagram.com/hi.jpg');
});
it('falls back to playable_url fields (with co-located dims) when video_versions absent', () => {
const html = jsonHtml({
playable_url_quality_hd: 'https://video.cdninstagram.com/hd.mp4',
playable_url: 'https://video.cdninstagram.com/sd.mp4',
original_width: 720,
original_height: 1280,
user: { username: 'creator' },
});
const result = extractFromJson(html);
const hd = result?.formats.find((format) => format.format_id === 'hd');
expect(hd?.url).toContain('hd.mp4');
expect(hd?.width).toBe(720);
expect(hd?.height).toBe(1280);
expect(
result?.formats.find((format) => format.format_id === 'sd')?.url
).toContain('sd.mp4');
expect(result?.uploader).toBe('creator');
});
it('emits photo formats for an image-only post', () => {
const html = jsonHtml({
caption: { text: 'a photo' },
user: { full_name: 'Shooter' },
image_versions2: {
candidates: [
{
width: 1080,
height: 1080,
url: 'https://scontent.cdninstagram.com/p.jpg',
},
],
},
});
const result = extractFromJson(html);
expect(result?.formats).toHaveLength(1);
expect(result?.formats[0]).toMatchObject({
format_id: 'photo',
ext: 'jpeg',
url: 'https://scontent.cdninstagram.com/p.jpg',
});
});
it('captures an fb-style poster when image_versions2 is absent', () => {
const html = jsonHtml({
browser_native_hd_url: 'https://video.cdninstagram.com/v.mp4',
original_width: 1080,
original_height: 1920,
preferred_thumbnail: {
image: { uri: 'https://scontent.cdninstagram.com/poster.jpg' },
},
user: { full_name: 'Poster User' },
});
const result = extractFromJson(html);
expect(result?.formats[0]).toMatchObject({
format_id: 'hd',
width: 1080,
height: 1920,
});
expect(result?.thumbnail).toBe(
'https://scontent.cdninstagram.com/poster.jpg'
);
});
it('returns null for a walled shell with no media keys', () => {
expect(
extractFromJson(jsonHtml({ foo: 'bar', locale: 'en_US' }))
).toBeNull();
});
it('ignores unparseable json blocks', () => {
const html = '';
expect(extractFromJson(html)).toBeNull();
});
});