import re

with open('includes/app.php', 'r', encoding='utf-8') as f:
    content = f.read()

# 1. Add is_super_admin()
role_func = """
function is_super_admin(): bool {
    if (isset($_GET['role'])) {
        $_SESSION['role'] = $_GET['role'];
    }
    return ($_SESSION['role'] ?? 'super_admin') === 'super_admin';
}
"""
if 'function is_super_admin' not in content:
    content = content.replace("function env_value", role_func + "\nfunction env_value", 1)

# 2. Update the header
header_old = '<span class="header-chip">صلاحية: المشرف العام</span>'
header_new = """<?php
                $isSuperAdmin = is_super_admin();
                $roleName = $isSuperAdmin ? 'المشرف العام' : 'مدير المركز';
                $nextRole = $isSuperAdmin ? 'center_admin' : 'super_admin';
                $currentUrl = $_SERVER['REQUEST_URI'];
                $roleSwitchUrl = strpos($currentUrl, '?') !== false 
                    ? preg_replace('/([?&])role=[^&]*(&|$)/', '$1', $currentUrl) 
                    : $currentUrl;
                $roleSwitchUrl = rtrim($roleSwitchUrl, '?&');
                $roleSwitchUrl .= (strpos($roleSwitchUrl, '?') !== false ? '&' : '?') . 'role=' . $nextRole;
                ?>
                <a href=\"<?= e($roleSwitchUrl) ?>\" class=\"header-chip text-decoration-none bg-primary text-white\" style=\"cursor:pointer;\" title=\"اضغط للتبديل\">صلاحية: <?= e($roleName) ?> ⟳</a>"""
content = content.replace(header_old, header_new)

with open('includes/app.php', 'w', encoding='utf-8') as f:
    f.write(content)