/**
 * DevToolKit - English Version
 * Entry point - all requests routed through this file
 * Auto-detects domain name for SEO
 */

// Get current domain for canonical URLs
$domain = $_SERVER['HTTP_HOST'] ?? 'toolsinbox.top';
$scheme = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off') ? 'https' : 'http';
$baseUrl = $scheme . '://' . $domain;

// Define root path
define('ROOT_PATH', __DIR__ . '/');
define('VIEWS_PATH', ROOT_PATH . 'views/');
define('BASE_URL', $baseUrl);

// Load configuration
$config = include ROOT_PATH . 'config.php';

// Get requested path
$requestUri = $_SERVER['REQUEST_URI'] ?? '/';
$scriptName = $_SERVER['SCRIPT_NAME'] ?? '';

// Remove query string
$requestUri = strtok($requestUri, '?');

// Remove script name prefix if present (for non-rewrite access)
if ($scriptName && strpos($requestUri, $scriptName) === 0) {
    $requestUri = substr($requestUri, strlen($scriptName));
}

// Remove trailing slash (except for root)
if ($requestUri !== '/' && substr($requestUri, -1) === '/') {
    $requestUri = rtrim($requestUri, '/');
}

// Default to homepage if empty
if (empty($requestUri) || $requestUri === '/') {
    $page = 'index';
    $tool = null;
} else {
    // Parse route: /tool-name or /tool-name/
    // Also handle /index.php/tool-name style
    $path = trim($requestUri, '/');
    
    // Map common routes
    $routeMap = [
        '' => 'index',
        'index' => 'index',
        'json-formatter' => 'json-formatter',
        'json-minifier' => 'json-minifier',
        'json-validator' => 'json-validator',
        'json-to-java' => 'json-to-java',
        'json-to-csharp' => 'json-to-csharp',
        'json-to-go' => 'json-to-go',
        'json-to-python' => 'json-to-python',
        'json-to-typescript' => 'json-to-typescript',
        'json-to-xml' => 'json-to-xml',
        'json-to-yaml' => 'json-to-yaml',
        'json-to-csv' => 'json-to-csv',
        'html-formatter' => 'html-formatter',
        'html-minifier' => 'html-minifier',
        'css-formatter' => 'css-formatter',
        'css-minifier' => 'css-minifier',
        'js-formatter' => 'js-formatter',
        'js-minifier' => 'js-minifier',
        'sql-formatter' => 'sql-formatter',
        'xml-formatter' => 'xml-formatter',
        'regex-tester' => 'regex-tester',
        'base64' => 'base64',
        'url-encode' => 'url-encode',
        'md5-hash' => 'md5-hash',
        'sha256-hash' => 'sha256-hash',
        'sha512-hash' => 'sha512-hash',
        'password-generator' => 'password-generator',
        'uuid-generator' => 'uuid-generator',
        'color-converter' => 'color-converter',
        'unicode-converter' => 'unicode-converter',
        'word-counter' => 'word-counter',
        'case-converter' => 'case-converter',
        'timestamp-converter' => 'timestamp-converter',
        'ip-lookup' => 'ip-lookup',
        'whois-lookup' => 'whois-lookup',
        'dns-lookup' => 'dns-lookup',
        'http-headers' => 'http-headers',
        'http-status-codes' => 'http-status-codes',
        'scientific-calculator' => 'scientific-calculator',
        'percentage-calculator' => 'percentage-calculator',
        'loan-calculator' => 'loan-calculator',
        'bmi-calculator' => 'bmi-calculator',
        'length-converter' => 'length-converter',
        'weight-converter' => 'weight-converter',
        'temperature-converter' => 'temperature-converter',
        'qr-code-generator' => 'qr-code-generator',
        'barcode-generator' => 'barcode-generator',
        'image-to-base64' => 'image-to-base64',
        'favicon-generator' => 'favicon-generator',
        'hash-generator' => 'hash-generator',
        'morse-code' => 'morse-code',
        'jwt-decoder' => 'jwt-decoder',
        'curl-generator' => 'curl-generator',
        'diff-checker' => 'diff-checker',
        'lorem-ipsum' => 'lorem-ipsum',
        'slug-generator' => 'slug-generator',
        'text-replacer' => 'text-replacer',
        'ascii-table' => 'ascii-table',
        'sitemap.xml' => 'sitemap',
        'robots.txt' => 'robots',
    ];
    
    if (isset($routeMap[$path])) {
        $page = $routeMap[$path];
    } else {
        $page = $path;
    }
}

// Load the page
$viewFile = VIEWS_PATH . $page . '.php';

if ($page === 'sitemap') {
    header('Content-Type: application/xml; charset=utf-8');
    echo generateSitemap($config, $baseUrl);
    exit;
}

if ($page === 'robots') {
    header('Content-Type: text/plain; charset=utf-8');
    echo generateRobots($baseUrl);
    exit;
}

if ($page === '404') {
    http_response_code(404);
    $viewFile = VIEWS_PATH . '404.php';
}

if (!file_exists($viewFile)) {
    http_response_code(404);
    $viewFile = VIEWS_PATH . '404.php';
}

// Extract SEO config for current page
$seo = $config['seo'][$page] ?? $config['seo']['index'];
$seo['canonical'] = $baseUrl . '/' . ($page === 'index' ? '' : $page);
$seo['current_url'] = $baseUrl . '/' . ($page === 'index' ? '' : $page);

// Include header
include VIEWS_PATH . 'header.php';

// Include page content
include $viewFile;

// Include footer
include VIEWS_PATH . 'footer.php';

function generateSitemap($config, $baseUrl) {
    $urls = [];
    foreach ($config['seo'] as $key => $data) {
        $loc = $baseUrl . '/' . ($key === 'index' ? '' : $key);
        $urls[] = '    <url>
        <loc>' . htmlspecialchars($loc) . '</loc>
        <changefreq>' . ($key === 'index' ? 'daily' : 'weekly') . '</changefreq>
        <priority>' . ($key === 'index' ? '1.0' : '0.8') . '</priority>
    </url>';
    }
    
    return '<' . '?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
' . implode("\n", $urls) . '
</urlset>';
}

function generateRobots($baseUrl) {
    return "User-agent: *
Allow: /
Disallow: /api/

Sitemap: {$baseUrl}/sitemap.xml
";
}