<?php
declare(strict_types=1);

require_once dirname(__DIR__) . '/src/UrlNormalizer.php';
require_once dirname(__DIR__) . '/src/SlugGenerator.php';

function assert_true(bool $cond, string $msg): void {
    if (!$cond) {
        fwrite(STDERR, "FAIL: $msg\n");
        exit(1);
    }
}

$n = UrlNormalizer::normalize('HTTPS://Example.COM/path?q=1#frag');
assert_true($n === 'https://example.com/path?q=1#frag', 'normalize host case');

$h = UrlNormalizer::originHash($n);
assert_true(strlen($h) === 64, 'origin hash length');

try {
    UrlNormalizer::normalize('http://127.0.0.1/');
    fwrite(STDERR, "FAIL: should block localhost\n");
    exit(1);
} catch (InvalidArgumentException $e) {
    // ok
}

$slug = SlugGenerator::baseSlug(42, 'https://example.com/a');
assert_true(strlen($slug) === 12, 'slug length 12');
assert_true(ctype_xdigit($slug), 'slug hex');

$candidates = SlugGenerator::candidates(1, 'https://a.test/');
assert_true(count($candidates) >= 2, 'collision candidates');

echo "OK url-shortener php tests\n";