satori-services/public/translate.php

<?php
define('TL_FORMAT', strtolower($_GET['fmt'] ?? 'json'));

if (isset($_SERVER['HTTP_USER_AGENT'], $_GET['pretty']) && strpos($_SERVER['HTTP_USER_AGENT'], 'Mozilla/') !== false)
    define('JSON_ARGS', JSON_PRETTY_PRINT);
else
    define('JSON_ARGS', 0);

function out($arr, $mode) {
    $output = '';
    $mimeType = 'text/plain';

    switch (TL_FORMAT) {
        case 'xml':
            $mimeType = 'application/xml';
            $output = "<?xml version=\"1.0\" encoding=\"utf-8\"?>\r\n";
            
            switch ($mode) {
                case 'list':
                    $type = get_class($arr[0]);
                    $output .= "<ArrayOf{$type}>";
                    foreach ($arr as $part) {
                        $output .= "<{$type} ";
                        
                        foreach (get_object_vars($part) as $name => $value) {
                            $output .= "{$name}=\"{$value}\" ";
                        }
                        
                        $output .= '/>';
                    }
                    $output .= "</ArrayOf{$type}>";
                    break;

                case 'do':
                    $output .= "<Translation ";

                    foreach ($arr as $name => $value) {
                        $value = htmlspecialchars($value);
                        $output .= "{$name}=\"{$value}\" ";
                    }

                    $output .= '/>';
                    break;
            }
            break;

        case 'json':
        default:
            $mimeType = 'application/json';
            $output = json_encode($arr, JSON_ARGS);
            break;
    }
    
    header("Content-Type: {$mimeType}; charset=utf-8");
    die($output);
}

define('TRANSLATE_URL', 'https://translate.google.com/translate_a/single?ie=UTF-8&oe=UTF-8&multires=1&client=gtx&sl=%s&tl=%s&dt=t&q=%s');
define('CURL_USER_AGENT', 'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/109.0');
define('MAX_TRANSL_LENGTH', 630);

function curl_req($url) {
    $curl = curl_init($url);

    curl_setopt_array($curl, [
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_SSL_VERIFYPEER => false,
        CURLOPT_SSL_VERIFYHOST => false,

        CURLOPT_USERAGENT => CURL_USER_AGENT,
    ]);

    return curl_exec($curl);
}

class Language {
    public $code;
    public $name;
    
    public function __construct($code, $name) {
        $this->code = $code;
        $this->name = $name;
    }
    
    public static function fromCode($code) {
        return new Language($code, locale_get_display_name($code));
    }
}

$languages = [
    'af', 'sq', 'ar', 'hy', 'az', 'eu', 'be', 'bn', 'bs',
    'bg', 'ca', 'ny', 'co', 'hr', 'cs', 'da', 'nl', 'en',
    'eo', 'tl', 'fi', 'fr', 'fy', 'gl', 'ka', 'de', 'el',
    'gu', 'ht', 'ha', 'iw', 'hi', 'hu', 'is', 'ig', 'id',
    'ga', 'ja', 'jw', 'kn', 'kk', 'km', 'ko', 'ku', 'ky',
    'lo', 'la', 'lv', 'lt', 'lb', 'mk', 'mg', 'ms', 'ml',
    'mt', 'mi', 'mr', 'mn', 'my', 'ne', 'no', 'ps', 'fa',
    'pl', 'pt', 'ma', 'ro', 'ru', 'sm', 'gd', 'sr', 'st',
    'sn', 'sd', 'si', 'sk', 'sl', 'so', 'es', 'su', 'sw',
    'sv', 'tg', 'ta', 'te', 'th', 'tr', 'uk', 'ur', 'uz',
    'vi', 'cy', 'xh', 'yi', 'yo', 'zu', 'it',
    'ceb', 'haw', 'hmn',
    'zh-cn', 'zh-tw',
];

$mode = $_GET['m'] ?? null;

switch ($mode) {
    case 'list':
        $out = [];

        foreach ($languages as $lang)
            $out[] = Language::fromCode($lang);

        out($out, $mode);

    case 'do':
        $from = strtolower($_GET['f'] ?? 'auto');
        $to = strtolower($_GET['t'] ?? 'en');

        if ($from !== 'auto' && !in_array($from, $languages))
            out(['error' => 'The given origin language is invalid.'], $mode);

        if (!in_array($to, $languages))
            out(['error' => 'The given destination language is invalid.'], $mode);

        $text = isset($_GET['z']) ? $_GET['z'] : file_get_contents('php://input');
        $t_len = strlen($text);

        if ($t_len < 1)
            out(['error' => 'Nothing to translate.'], $mode);

        if ($t_len > MAX_TRANSL_LENGTH)
            out(['error' => 'Too much text, please split some up.'], $mode);

        $google_txt = curl_req(sprintf(TRANSLATE_URL, $from, $to, rawurlencode($text)));

        $google = json_decode($google_txt);

        if (strlen($google_txt) < 1 || !$google)
            out(['error' => 'Something happened.'], $mode);

        $result = $google[0][0][0];
        $original = $google[0][0][1];
        $from = $google[2];
        $from_text = locale_get_display_name($from);
        $to_text = locale_get_display_name($to);

        out(compact('from', 'from_text', 'to', 'to_text', 'original', 'result'), $mode);
}