<?php
declare(strict_types=1);

header('Content-Type: text/plain; charset=utf-8');

$configFile = dirname(__DIR__) . '/config.php';

echo "Arbeitsstunden Debug\n";
echo "===================\n\n";

echo 'PHP Version: ' . PHP_VERSION . "\n";
echo 'Config gefunden: ' . (is_file($configFile) ? 'ja' : 'nein') . "\n";
echo 'PDO geladen: ' . (extension_loaded('pdo') ? 'ja' : 'nein') . "\n";
echo 'PDO MySQL geladen: ' . (extension_loaded('pdo_mysql') ? 'ja' : 'nein') . "\n\n";

if (!is_file($configFile)) {
    echo "config.php fehlt neben httpdocs.\n";
    exit;
}

$config = require $configFile;
$db = $config['db'] ?? [];

echo 'DB Host: ' . (($db['host'] ?? '') !== '' ? $db['host'] : '(leer)') . "\n";
echo 'DB Name: ' . (($db['name'] ?? '') !== '' ? $db['name'] : '(leer)') . "\n";
echo 'DB User: ' . (($db['user'] ?? '') !== '' ? $db['user'] : '(leer)') . "\n";
echo 'DB Passwort gesetzt: ' . (($db['pass'] ?? '') !== '' ? 'ja' : 'nein') . "\n\n";

try {
    $dsn = sprintf('mysql:host=%s;dbname=%s;charset=utf8mb4', (string)($db['host'] ?? ''), (string)($db['name'] ?? ''));
    $pdo = new PDO($dsn, (string)($db['user'] ?? ''), (string)($db['pass'] ?? ''), [PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION]);
    echo "DB Verbindung: ok\n";

    $version = $pdo->query('SELECT VERSION()')->fetchColumn();
    echo 'DB Version: ' . $version . "\n";

    $hasUsers = $pdo->query("SHOW TABLES LIKE 'users'")->fetchColumn();
    echo 'Tabelle users vorhanden: ' . ($hasUsers ? 'ja' : 'nein') . "\n";

    if ($hasUsers) {
        $count = $pdo->query('SELECT COUNT(*) FROM users')->fetchColumn();
        echo 'Benutzer in users: ' . $count . "\n";
    }
} catch (Throwable $e) {
    echo "DB Verbindung: fehlgeschlagen\n";
    echo 'Fehler: ' . $e->getMessage() . "\n";
}