<?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/>.
 */

define('ROOT', rtrim($_SERVER['DOCUMENT_ROOT'], '/') . '/');

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

if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $code    = $_POST['code'];
    $user_id = get_user_id();

    if (!$user_id) {
        echo "Not logged in.";
        exit;
    }

    $host    = '127.0.0.1';
    $db      = 'gnufaultdb';
    $db_user = 'gnufaultdb_user';
    $pass    = trim(file_get_contents('/etc/gnufault.d/password'));

    $charset = 'utf8mb4';
    $dsn     = "mysql:host=$host;dbname=$db;charset=$charset";

    $options = [
        PDO::ATTR_ERRMODE            => PDO::ERRMODE_EXCEPTION,
        PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
        PDO::ATTR_EMULATE_PREPARES   => false,
    ];

    try {
        $pdo = new PDO($dsn, $db_user, $pass, $options);
    } catch (\PDOException $e) {
        throw new \PDOException($e->getMessage(), (int)$e->getCode());
    }

    try {
        $sql = "SELECT verification_code FROM users WHERE id = :id";
        $stmt = $pdo->prepare($sql);

        $stmt->execute(['id' => $user_id]);

        $user = $stmt->fetch();
        if (!$user) {
            echo "User not found.";
            exit;
        }

        $real_code = $user['verification_code'];
    } catch (\PDOException $e) {
        echo "Error: " . $e->getMessage();
        exit;
    }

    if ($real_code == '0001') {
        echo "Account is already verifed";
        exit;
    }

    if ($code != $real_code) {
        echo "Code is not correct!";
        exit;
    }

    try {
        $sql = "UPDATE users SET verification_code = :code WHERE id = :id";
        $stmt = $pdo->prepare($sql);

        $stmt->execute([
            'code' => '0001',
            'id'   => $user_id
        ]);

        if ($stmt->rowCount() == 0) {
            echo "User not found.";
        }
    } catch (\PDOException $e) {
        echo "Error: " . $e->getMessage();
        exit;
    }

    header("Location: /signin");
}

?>