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<?php
/**
* Translation System for SoundStudioPro
* Supports English and French
*/
// Initialize session if not already started
if (session_status() === PHP_SESSION_NONE) {
session_start();
}
// Define available languages
define('AVAILABLE_LANGUAGES', ['en', 'fr']);
define('DEFAULT_LANGUAGE', 'en');
/**
* Get current language from session or browser preference
*/
function getCurrentLanguage() {
// Check if language is set in session
if (isset($_SESSION['language']) && in_array($_SESSION['language'], AVAILABLE_LANGUAGES)) {
return $_SESSION['language'];
}
// Check if language is set via GET parameter
if (isset($_GET['lang']) && in_array($_GET['lang'], AVAILABLE_LANGUAGES)) {
$_SESSION['language'] = $_GET['lang'];
return $_GET['lang'];
}
// Try to detect from browser Accept-Language header
if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
$browserLang = substr($_SERVER['HTTP_ACCEPT_LANGUAGE'], 0, 2);
if (in_array($browserLang, AVAILABLE_LANGUAGES)) {
$_SESSION['language'] = $browserLang;
return $browserLang;
}
}
// Default to English
$_SESSION['language'] = DEFAULT_LANGUAGE;
return DEFAULT_LANGUAGE;
}
/**
* Set language
*/
function setLanguage($lang) {
if (in_array($lang, AVAILABLE_LANGUAGES)) {
$_SESSION['language'] = $lang;
return true;
}
return false;
}
/**
* Load translation file
*/
function loadTranslations($lang) {
static $translations = [];
if (isset($translations[$lang])) {
return $translations[$lang];
}
$translationFile = __DIR__ . '/../lang/' . $lang . '.php';
if (file_exists($translationFile)) {
$translations[$lang] = require $translationFile;
return $translations[$lang];
}
// Fallback to English if translation file doesn't exist
if ($lang !== DEFAULT_LANGUAGE) {
$translationFile = __DIR__ . '/../lang/' . DEFAULT_LANGUAGE . '.php';
if (file_exists($translationFile)) {
$translations[$lang] = require $translationFile;
return $translations[$lang];
}
}
// Return empty array if no translation file exists
return [];
}
/**
* Translation function - main function to use throughout the site
* Usage: t('key') or t('key', ['param' => 'value'])
*/
function t($key, $params = []) {
$lang = getCurrentLanguage();
$translations = loadTranslations($lang);
// Get translation
$translation = $translations[$key] ?? $key;
// Replace parameters if provided
if (!empty($params)) {
foreach ($params as $paramKey => $paramValue) {
$translation = str_replace(':' . $paramKey, $paramValue, $translation);
}
}
return $translation;
}
/**
* Echo translation (shorthand)
*/
function te($key, $params = []) {
echo t($key, $params);
}
/**
* Helper to fetch localized plan names with graceful fallback.
*/
function getPlanLabel($planKey, $defaultName = null) {
$translationKey = 'plans.label.' . $planKey;
$translated = t($translationKey);
if ($translated === $translationKey) {
if ($defaultName !== null) {
return $defaultName;
}
$readable = str_replace('_', ' ', $planKey);
return ucwords($readable);
}
return $translated;
}
/**
* Helper to fetch localized plan target audience text.
*/
function getPlanAudienceLabel($planKey, $defaultDescription = null) {
$translationKey = 'plans.target_audience.' . $planKey;
$translated = t($translationKey);
if ($translated === $translationKey) {
if ($defaultDescription !== null) {
return $defaultDescription;
}
return $translationKey;
}
return $translated;
}
/**
* Get language name
*/
function getLanguageName($lang) {
$names = [
'en' => 'English',
'fr' => 'Français'
];
return $names[$lang] ?? $lang;
}
/**
* Get language direction (for RTL support in future)
*/
function getLanguageDirection($lang = null) {
if ($lang === null) {
$lang = getCurrentLanguage();
}
return 'ltr'; // Both English and French are LTR
}
/**
* Translate credit transaction descriptions
* Maps known English descriptions to translation keys
*/
function translateCreditDescription($description) {
// Map of known English descriptions to translation keys
$descriptionMap = [
'Holiday Gift - 5 Free Songs' => 'credits.desc.holiday_gift',
'Subscription renewal' => 'credits.desc.subscription_renewal',
'Credit purchase' => 'credits.desc.credit_purchase',
'Track generation' => 'credits.desc.track_generation',
'Welcome bonus' => 'credits.desc.welcome_bonus',
'Refund' => 'credits.desc.refund',
];
// Check for exact match
if (isset($descriptionMap[$description])) {
return t($descriptionMap[$description]);
}
// Handle "Music track creation" descriptions with mode and track title
// Format: "Music track creation (Pro Mode): Track Title" or "Music track creation: Track Title"
// Note: Track title may be empty, so we use .* instead of .+
if (preg_match('/^Music track creation(?: \(([^)]+)\))?(?:: (.*))?$/i', $description, $matches)) {
$mode = $matches[1] ?? '';
$trackTitle = $matches[2] ?? '';
// Translate mode
$translatedMode = '';
if ($mode) {
switch ($mode) {
case 'Pro Mode':
$translatedMode = t('credits.desc.mode_pro');
break;
case 'Advanced Mode':
$translatedMode = t('credits.desc.mode_advanced');
break;
case 'Simple Mode':
case 'Basic Mode':
$translatedMode = t('credits.desc.mode_simple');
break;
default:
$translatedMode = $mode;
}
}
// Build translated description
$result = t('credits.desc.track_creation');
if ($translatedMode) {
$result .= ' (' . $translatedMode . ')';
}
if ($trackTitle) {
$result .= ' : ' . $trackTitle;
}
return $result;
}
// Check for pattern matches (for descriptions with dynamic content)
foreach ($descriptionMap as $pattern => $key) {
if (stripos($description, $pattern) !== false) {
return t($key);
}
}
// Return original if no translation found
return $description;
}
/**
* Format a date in the current language
* @param int|string $timestamp Unix timestamp or date string
* @param string $format Format key: 'short', 'medium', 'long', 'datetime', 'time'
* @return string Localized date string
*/
function formatLocalizedDate($timestamp, $format = 'medium') {
if (is_string($timestamp)) {
$timestamp = strtotime($timestamp);
}
$lang = getCurrentLanguage();
// French month names
$frenchMonths = [
1 => 'janvier', 2 => 'février', 3 => 'mars', 4 => 'avril',
5 => 'mai', 6 => 'juin', 7 => 'juillet', 8 => 'août',
9 => 'septembre', 10 => 'octobre', 11 => 'novembre', 12 => 'décembre'
];
$frenchMonthsShort = [
1 => 'janv.', 2 => 'févr.', 3 => 'mars', 4 => 'avr.',
5 => 'mai', 6 => 'juin', 7 => 'juil.', 8 => 'août',
9 => 'sept.', 10 => 'oct.', 11 => 'nov.', 12 => 'déc.'
];
$day = date('j', $timestamp);
$month = (int)date('n', $timestamp);
$year = date('Y', $timestamp);
$hour = date('G', $timestamp);
$minute = date('i', $timestamp);
$timezone = date('T', $timestamp);
if ($lang === 'fr') {
switch ($format) {
case 'short':
// 13 déc.
return $day . ' ' . $frenchMonthsShort[$month];
case 'medium':
// 13 déc. 2025
return $day . ' ' . $frenchMonthsShort[$month] . ' ' . $year;
case 'long':
// 13 décembre 2025
return $day . ' ' . $frenchMonths[$month] . ' ' . $year;
case 'datetime':
// 13 déc., 14h30
return $day . ' ' . $frenchMonthsShort[$month] . ', ' . $hour . 'h' . $minute;
case 'full':
// 13 décembre 2025 à 14h30 UTC
return $day . ' ' . $frenchMonths[$month] . ' ' . $year . ' à ' . $hour . 'h' . $minute . ' ' . $timezone;
case 'time':
// 14h30
return $hour . 'h' . $minute;
default:
return $day . ' ' . $frenchMonthsShort[$month] . ' ' . $year;
}
} else {
// English formats
$englishMonths = date('F', $timestamp);
$englishMonthsShort = date('M', $timestamp);
$ampm = date('A', $timestamp);
$hour12 = date('g', $timestamp);
switch ($format) {
case 'short':
// Dec 13
return $englishMonthsShort . ' ' . $day;
case 'medium':
// Dec 13, 2025
return $englishMonthsShort . ' ' . $day . ', ' . $year;
case 'long':
// December 13, 2025
return $englishMonths . ' ' . $day . ', ' . $year;
case 'datetime':
// Dec 13, 2:30 PM
return $englishMonthsShort . ' ' . $day . ', ' . $hour12 . ':' . $minute . ' ' . $ampm;
case 'full':
// December 13, 2025 at 2:30 PM UTC
return $englishMonths . ' ' . $day . ', ' . $year . ' at ' . $hour12 . ':' . $minute . ' ' . $ampm . ' ' . $timezone;
case 'time':
// 2:30 PM
return $hour12 . ':' . $minute . ' ' . $ampm;
default:
return $englishMonthsShort . ' ' . $day . ', ' . $year;
}
}
}