import { test } from 'node:test';
import assert from 'node:assert/strict';
import { extractTimeId, generateSlug, buildFilename } from './slug.ts';

test('slug folds accents, lowercases, collapses', () => {
	assert.equal(
		generateSlug('Ciências Políticas - Visão Geral'),
		'ciencias-politicas-visao-geral',
	);
});

test('slug collapses runs of punctuation and whitespace to one dash', () => {
	assert.equal(generateSlug('  Hello,   World!!  '), 'hello-world');
	assert.equal(generateSlug('a/b:c*d?e'), 'a-b-c-d-e');
});

test('empty or heading-less input yields empty slug', () => {
	assert.equal(generateSlug(''), '');
	assert.equal(generateSlug('   ---   '), '');
});

test('extractTimeId accepts 12/14/18-digit prefixes, rejects others', () => {
	assert.equal(extractTimeId('202607281454-x'), '202607281454'); // 12
	assert.equal(extractTimeId('20260728145404-x'), '20260728145404'); // 14
	assert.equal(extractTimeId('202607281454049999-x'), '202607281454049999'); // 18
	assert.equal(extractTimeId('20260728145404'), '20260728145404'); // bare id
	assert.equal(extractTimeId('my-note'), null);
	assert.equal(extractTimeId('2026-budget'), null); // too short
	assert.equal(extractTimeId('2026072814540499999-x'), null); // 19, too long
});

test('buildFilename collapses empty slug to bare id', () => {
	assert.equal(
		buildFilename('20260728145404', 'some-title'),
		'20260728145404-some-title',
	);
	assert.equal(buildFilename('20260728145404', ''), '20260728145404');
});