soil-report-ai/lib/auth.php

<?php
/**
 * lib/auth.php
 *
 * Authentication and authorization functions.
 */

/**
 * Check if user is logged in
 */
function isLoggedIn(): bool
{
    return isset($_SESSION['user_id']) && !empty($_SESSION['user_id']);
}

/**
 * Get current user ID
 */
function getCurrentUserId(): ?int
{
    return $_SESSION['user_id'] ?? null;
}

/**
 * Require user to be logged in, redirect if not
 */
function requireLogin(): void
{
    if (!isLoggedIn()) {
        header('Location: /login/login.php');
        exit;
    }
}

/**
 * Check if user has specific role/permission
 */
function hasPermission(string $permission): bool
{
    if (!isLoggedIn()) {
        return false;
    }

    // TODO: Implement proper role-based permissions
    // For now, just check if user is logged in
    return true;
}
?>