<?php
/**
 * Health Check Endpoint
 * Returns application health status and database connectivity
 */

header('Content-Type: application/json');

$health = [
    'status' => 'ok',
    'timestamp' => time()
];

// Check database connection
$dbConnected = false;
$dbError = null;

try {
    $conn = @mysqli_connect(
        'aide-mariadb',
        'aide',
        'aide',
        'thetool_s13'
    );

    if ($conn) {
        $dbConnected = true;
        mysqli_close($conn);
    }
} catch (Exception $e) {
    $dbError = $e->getMessage();
}

if ($dbConnected) {
    $health['db'] = true;
} else {
    $health['db'] = false;
    if ($dbError) {
        $health['db_error'] = $dbError;
    }
}

// Set HTTP status code
if ($health['db']) {
    http_response_code(200);
} else {
    http_response_code(503); // Service Unavailable
}

echo json_encode($health);