<?php
// Debug language detection issue
session_start();

echo "=== Language Detection Debug ===\n\n";

// Check if session is working
echo "Session ID: " . session_id() . "\n";
echo "Session data: " . print_r($_SESSION, true) . "\n\n";

// Check GET parameters
echo "GET parameters: " . print_r($_GET, true) . "\n\n";

// Check browser language
echo "Browser language: " . ($_SERVER['HTTP_ACCEPT_LANGUAGE'] ?? 'not set') . "\n\n";

// Check constants
echo "DEFAULT_LANGUAGE constant: " . (defined('DEFAULT_LANGUAGE') ? DEFAULT_LANGUAGE : 'not defined') . "\n\n";

// Initialize translation system
require_once 'includes/config.php';
require_once 'includes/translation.php';

echo "After loading config:\n";
echo "DEFAULT_LANGUAGE constant: " . (defined('DEFAULT_LANGUAGE') ? DEFAULT_LANGUAGE : 'not defined') . "\n\n";

try {
    $translation = Translation::getInstance();
    echo "Current language: " . $translation->getCurrentLanguage() . "\n";
    echo "Supported languages: " . implode(', ', array_keys($translation->getSupportedLanguages())) . "\n";
    echo "Session language after init: " . ($_SESSION['language'] ?? 'not set') . "\n\n";
    
    // Test translation
    echo "Test translation 'nav_home': " . $translation->translate('nav_home') . "\n";
    
} catch (Exception $e) {
    echo "Error: " . $e->getMessage() . "\n";
}

echo "\n=== Debug Complete ===\n";
?>