<?php
session_start();

// Log the logout activity if user was logged in
if (isset($_SESSION['user_id'])) {
    require_once 'admin/database/db_config.php';
    
    $user_id = $_SESSION['user_id'];
    $user_role = $_SESSION['role'];
    
    // Log the activity
    $activity_query = "INSERT INTO activities (user_id, user_type, activity_type, activity_description) 
                      VALUES (?, ?, 'logout', 'User logged out successfully')";
    $stmt = $conn->prepare($activity_query);
    $stmt->bind_param("is", $user_id, $user_role);
    $stmt->execute();
}

// Clear all session variables
$_SESSION = array();

// Destroy the session cookie
if (isset($_COOKIE[session_name()])) {
    setcookie(session_name(), '', time()-3600, '/');
}

// Destroy the session
session_destroy();

// Redirect to login page
header("Location: login.php");
exit;