<?php
/**
 * Logout Script for Kayal Aqua
 * Handles user logout and session cleanup
 */

require_once 'config/config.php';
require_once 'includes/functions.php';

// Check if user is logged in
if (isLoggedIn()) {
    $currentUser = getCurrentUser();
    
    // Log logout activity
    if ($currentUser) {
        logSystemActivity('Logout', 'User logged out: ' . $currentUser['username'], $currentUser['id']);
    }
    
    // Clear remember me token if exists
    if (isset($_COOKIE['remember_token'])) {
        $token = $_COOKIE['remember_token'];
        
        // Remove token from database
        updateData('users', [
            'remember_token' => null,
            'remember_expires' => null
        ], 'remember_token = ?', [$token]);
        
        // Clear cookie
        setcookie('remember_token', '', time() - 3600, '/', '', true, true);
    }
    
    // Clear all session data
    $_SESSION = array();
    
    // Destroy session cookie
    if (isset($_COOKIE[session_name()])) {
        setcookie(session_name(), '', time() - 42000, '/');
    }
    
    // Destroy session
    session_destroy();
    
    // Redirect to login with success message
    redirect('login.php?logout=success');
} else {
    // Not logged in, redirect to login
    redirect('login.php');
}
?>