<?php
if (session_status() === PHP_SESSION_NONE) {
    session_name('ORG_ADMIN_SESS');
    session_start();
}

require_once __DIR__ . '/../db/config.php';

/**
 * Check if the user is logged in
 */
function is_logged_in() {
    return isset($_SESSION['user_id']);
}

/**
 * Require login for a page
 */
function require_login() {
    if (!is_logged_in()) {
        header('Location: login.php');
        exit;
    }
}

/**
 * Get the current logged in user
 */
function get_user() {
    if (!isset($_SESSION['user_id'])) return null;
    
    try {
        $pdo = db();
        $stmt = $pdo->prepare("SELECT * FROM users WHERE id = ?");
        $stmt->execute([$_SESSION['user_id']]);
        return $stmt->fetch();
    } catch (Exception $e) {
        return null;
    }
}

/**
 * Check if user is super admin
 */
function is_super_admin() {
    $user = get_user();
    return $user && isset($user['role']) && $user['role'] === 'super_admin';
}

/**
 * Log an action to audit_logs table
 */
function log_action($action, $details = '') {
    try {
        $pdo = db();
        $user_id = $_SESSION['user_id'] ?? null;
        $stmt = $pdo->prepare("INSERT INTO audit_logs (user_id, action, details) VALUES (?, ?, ?)");
        $stmt->execute([$user_id, $action, $details]);
    } catch (Exception $e) {
        error_log("Failed to log action: " . $e->getMessage());
    }
}

/**
 * Get organization name from profile
 */
function get_org_name() {
    if (isset($_SESSION['org_name']) && !empty($_SESSION['org_name'])) {
        return $_SESSION['org_name'];
    }

    try {
        $pdo = db();
        $profile = $pdo->query("SELECT name_en FROM org_profile LIMIT 1")->fetch();
        if ($profile && !empty($profile['name_en'])) {
            $_SESSION['org_name'] = $profile['name_en'];
            return $profile['name_en'];
        }
    } catch (Exception $e) {
    }

    return 'Organization';
}

/**
 * Get organization favicon URL
 */
function get_favicon_url() {
    if (isset($_SESSION['favicon_url']) && !empty($_SESSION['favicon_url'])) {
        return $_SESSION['favicon_url'];
    }

    try {
        $pdo = db();
        $profile = $pdo->query("SELECT favicon_url FROM org_profile LIMIT 1")->fetch();
        if ($profile && !empty($profile['favicon_url'])) {
            $_SESSION['favicon_url'] = $profile['favicon_url'];
            return $profile['favicon_url'];
        }
    } catch (Exception $e) {
    }

    return '';
}

/**
 * Get organization logo URL
 */
function get_logo_url() {
    if (isset($_SESSION['logo_url']) && !empty($_SESSION['logo_url'])) {
        return $_SESSION['logo_url'];
    }

    try {
        $pdo = db();
        $profile = $pdo->query("SELECT logo_url FROM org_profile LIMIT 1")->fetch();
        if ($profile && !empty($profile['logo_url'])) {
            $_SESSION['logo_url'] = $profile['logo_url'];
            return $profile['logo_url'];
        }
    } catch (Exception $e) {
    }

    return '';
}