80 lines
2.7 KiB
PHP
80 lines
2.7 KiB
PHP
<?php
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namespace App\Controllers;
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use App\Helpers\ErrorHandler;
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use App\Helpers\Misc;
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/**
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* Used to be compatible with HTML forms
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*/
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class RedirectController {
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static public function redirect() {
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$endpoint = '/';
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if (isset($_GET['type'], $_GET['term'])) {
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$term = trim($_GET['term']);
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switch ($_GET['type']) {
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case 'url':
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$endpoint = self::to_endpoint($term);
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if (!$endpoint) {
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echo 'Invalid or unknown TikTok URL format';
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return;
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}
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break;
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case 'user':
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// Remove @ if sent
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if ($term[0] === '@') {
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$term = substr($term, 1);
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}
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$endpoint = '/@' . $term;
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break;
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case 'tag':
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// Remove # if sent
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if ($term[0] === '#') {
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$term = substr($term, 1);
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}
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$endpoint = '/tag/' . $term;
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break;
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case 'music':
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$endpoint = '/music/' . $term;
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break;
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case 'video':
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// The @username part is not used, but
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// it is the schema that TikTok follows
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$endpoint = '/@placeholder/video/' . $term;
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break;
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}
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}
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$url = Misc::url($endpoint);
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header("Location: {$url}");
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}
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/**
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* to_endpoint maps a TikTok URL into a ProxiTok-compatible endpoint URL.
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*/
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static private function to_endpoint(string $url): string {
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if (preg_match('%^https://vm\.tiktok\.com/([A-Za-z0-9]+)%', $url, $m)) {
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// Short video URL
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return '/@placeholder/video/' . $m[1];
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} elseif (preg_match('%^https://www\.tiktok\.com/(.+)%', $url, $m)) {
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// Username component (which may indicate a user profile URL or a video URL)
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if (preg_match('%^(@[A-Za-z0-9_.]+)(?:/|$)(.*)%', $m[1], $u)) {
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if ($u[2] == '') {
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// User profile URL
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return '/' . $u[1];
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} elseif (preg_match('%^video/(\d+)%', $u[2], $v)) {
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// Video URL
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return '/' . $u[1] . '/video/' . $v[1];
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}
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} elseif (preg_match('%^tag/([^ ]+?)(?:/|$)%', $m[1], $t)) {
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// Tag URL
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return '/tag/' . $t[1];
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} elseif (preg_match('%^music/([^ ]+?)(?:/|$)%', $m[1], $m)) {
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// Music URL
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return '/music/' . $m[1];
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}
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}
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return '';
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}
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}
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