<?php
/*
 *  GNUfault.org - GNUfault's website
 *  Copyright (C) 2026  Connor Thomson
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Affero General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Affero General Public License for more details.
 *
 *  You should have received a copy of the GNU Affero General Public License
 *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

require_once ROOT . '/php/session.php';
require_once ROOT . '/php/database.php';
require_once ROOT . '/php/render.php';

const USER_STATUSES = ['none', 'member', 'mod', 'admin'];

function find_user(string $username): ?array {
    $sql = "SELECT id, username, status FROM users WHERE username = :username";

    return fetch_row($sql, ['username' => $username]);
}

function current_user(): ?array {
    $user_id = get_user_id();

    if ($user_id === null) {
        return null;
    }

    $sql = "SELECT id, username, status FROM users WHERE id = :id";

    return fetch_row($sql, ['id' => $user_id]);
}

function is_admin(): bool {
    $user = current_user();

    return $user !== null && $user['status'] === 'admin';
}

function require_admin(): void {
    if (is_admin()) {
        return;
    }

    if (get_user_id() === null) {
        http_response_code(401);
    } else {
        http_response_code(403);
    }

    exit;
}

?>