<?php

/**
 * Simple offline translator: duplicates lang/en -> lang/de and applies a rule-based
 * English->German translation for string values while preserving tokens/placeholders.
 *
 * Usage: php scripts/generate_de_lang.php
 *
 * Note: this is a heuristic translator (word-replacement). For high-quality
 * translations use a translation provider and enable it in this script.
 */

function ensureDir(string $path)
{
    if (!is_dir($path)) mkdir($path, 0755, true);
}

function loadPhpArray(string $file)
{
    return require $file;
}

// Basic mapping (expand as needed)
$dictionary = [
    'Settings' => 'Einstellungen',
    'Setting' => 'Einstellung',
    'Update' => 'Aktualisierung',
    'Updates' => 'Aktualisierungen',
    'Application' => 'Anwendung',
    'app' => 'App',
    'Backup' => 'Sicherung',
    'Backups' => 'Sicherungen',
    'Restore' => 'Wiederherstellung',
    'File' => 'Datei',
    'Files' => 'Dateien',
    'Selected file' => 'Ausgewählte Datei',
    'Selected file:' => 'Ausgewählte Datei:',
    'Cancel' => 'Abbrechen',
    'Save' => 'Speichern',
    'Upload' => 'Hochladen',
    'Uploading...' => 'Hochladen...',
    'Name' => 'Name',
    'Date' => 'Datum',
    'Size' => 'Größe',
    'Status' => 'Status',
    'Actions' => 'Aktionen',
    'History' => 'Verlauf',
    'Configure' => 'Konfigurieren',
    'Configure Zoom Server-to-Server OAuth Credentials' => 'Zoom Server-to-Server OAuth-Anmeldedaten konfigurieren',
    'Language' => 'Sprache',
    'Languages' => 'Sprachen',
    'Language Settings' => 'Spracheinstellungen',
    'Add Language' => 'Sprache hinzufügen',
    'Translate Language Properties' => 'Spracheigenschaften übersetzen',
    'Application Update' => 'Anwendungs-Aktualisierung',
    'Update Application' => 'Anwendung aktualisieren',
    'Please do not close this window' => 'Bitte schließe dieses Fenster nicht',
    'Are you sure' => 'Bist du sicher',
    'Are you sure you want to delete this backup? This action cannot be undone.' => 'Bist du sicher, dass du diese Sicherung löschen möchtest? Diese Aktion kann nicht rückgängig gemacht werden.',
    'Confirm Application Update' => 'Anwendungsaktualisierung bestätigen',
    'Process may take several minutes' => 'Der Vorgang kann einige Minuten dauern',
    'Test Mode' => 'Testmodus',
    'Using Test Environment' => 'Verwendet Testumgebung',
    'Using Live Environment' => 'Verwendet Live-Umgebung',
    'API Credentials' => 'API-Zugangsdaten',
    'Copy' => 'Kopieren',
    'Browse Files' => 'Dateien durchsuchen',
    'No file selected' => 'Keine Datei ausgewählt',
    'Select File (.zip only)' => 'Datei auswählen (.zip nur)',
    'Uploading...' => 'Wird hochgeladen...',
    'The :attribute field confirmation does not match.' => 'Die :attribute Bestätigung stimmt nicht überein.',
    'The :attribute has already been taken.' => 'Das :attribute ist bereits vergeben.',
    'The :attribute failed to upload.' => 'Das :attribute konnte nicht hochgeladen werden.',
];

// Token patterns to preserve
$tokenPatterns = [
    '/:(\w+)/',          // :seconds, :filename
    '/\{\{.*?\}\}/',  // {{ var }}
    '/\{[^}]+\}/',      // {variable}
    '/%\w/',             // %s %d
    '/%\([^\)]+\)s/',  // %(name)s
];

function maskTokens(string $s, array $patterns, array &$tokens)
{
    $tokens = [];
    foreach ($patterns as $p) {
        $s = preg_replace_callback($p, function ($m) use (&$tokens) {
            $key = '__TOKEN'.count($tokens).'__';
            $tokens[$key] = $m[0];
            return $key;
        }, $s);
    }
    return $s;
}

function unmaskTokens(string $s, array $tokens)
{
    if (!$tokens) return $s;
    return strtr($s, $tokens);
}

function translateString(string $s, array $dictionary, array $tokenPatterns)
{
    // preserve tokens
    $tokens = [];
    $masked = maskTokens($s, $tokenPatterns, $tokens);

    // Sort dictionary by key length, descending
    uksort($dictionary, function($a, $b){ return strlen($b) - strlen($a); });

    // quick full-match dictionary
    if (isset($dictionary[$masked])) {
        $translated = $dictionary[$masked];
    } else {
        // word-by-word replace, case-sensitive and insensitive
        $translated = $masked;
        foreach ($dictionary as $eng => $ger) {
            // replace whole words and phrases
            $translated = str_ireplace($eng, $ger, $translated);
        }
    }

    // restore tokens
    $translated = unmaskTokens($translated, $tokens);

    return $translated;
}

function translateRecursive($data, $dictionary, $tokenPatterns)
{
    if (is_string($data)) {
        return translateString($data, $dictionary, $tokenPatterns);
    }
    if (is_array($data)) {
        $out = [];
        foreach ($data as $k => $v) {
            $out[$k] = translateRecursive($v, $dictionary, $tokenPatterns);
        }
        return $out;
    }
    return $data;
}

$baseEn = __DIR__ . '/../lang/en';
$baseDe = __DIR__ . '/../lang/de';

ensureDir($baseDe);

$files = glob($baseEn.'/*.php');
foreach ($files as $file) {
    $name = basename($file);
    echo "Processing $name...\n";
    $arr = require $file;
    $translated = translateRecursive($arr, $dictionary, $tokenPatterns);
    $out = "<?php\n\nreturn ".var_export($translated, true).";\n";
    file_put_contents($baseDe.'/'.$name, $out);
}

// Also copy storage group files (complex structures)
$groupsEn = __DIR__ . '/../storage/app/lang/groups';
$groupsDe = __DIR__ . '/../storage/app/lang/groups/de';
if (is_dir($groupsEn)) {
    ensureDir($groupsDe);
    $gfiles = glob($groupsEn.'/*.php');
    foreach ($gfiles as $gf) {
        $name = basename($gf);
        echo "Processing group $name...\n";
        $arr = require $gf;
        // arr is list of entries with properties arrays
        $outArr = [];
        foreach ($arr as $entry) {
            if (isset($entry['properties']) && is_array($entry['properties'])) {
                $entry['properties'] = translateRecursive($entry['properties'], $dictionary, $tokenPatterns);
            }
            $outArr[] = $entry;
        }
        $out = "<?php\n\nreturn ".var_export($outArr, true).";\n";
        file_put_contents($groupsDe.'/'.$name, $out);
    }
}

echo "Done. German lang files generated under lang/de and storage/app/lang/groups/de\n";