<?php

/*
 * eduVPN - End-user friendly VPN.
 *
 * Copyright: 2016-2019, The Commons Conservancy eduVPN Programme
 * SPDX-License-Identifier: AGPL-3.0+
 */

require_once dirname(__DIR__).'/vendor/autoload.php';
$baseDir = dirname(__DIR__);

use LC\Common\Config;
use LC\Portal\Storage;

try {
    $dataDir = sprintf('%s/data', $baseDir);
    $userId = null;
    $userPass = null;
    for ($i = 1; $i < $argc; ++$i) {
        if ('--user' === $argv[$i]) {
            if ($i + 1 < $argc) {
                $userId = $argv[$i + 1];
            }
            continue;
        }
        if ('--pass' === $argv[$i]) {
            if ($i + 1 < $argc) {
                $userPass = $argv[$i + 1];
            }
            continue;
        }
        if ('--help' === $argv[$i]) {
            echo 'SYNTAX: '.$argv[0].' [--user USER] [--pass PASS]'.PHP_EOL;
            exit(0);
        }
    }

    if (null === $userId) {
        echo 'User ID: ';
        $userId = trim(fgets(STDIN));
    }

    if (empty($userId)) {
        throw new RuntimeException('User ID cannot be empty');
    }

    if (null === $userPass) {
        echo sprintf('Setting password for user "%s"', $userId).PHP_EOL;
        // ask for password
        exec('stty -echo');
        echo 'Password: ';
        $userPass = trim(fgets(STDIN));
        echo PHP_EOL.'Password (repeat): ';
        $userPassRepeat = trim(fgets(STDIN));
        exec('stty echo');
        echo PHP_EOL;
        if ($userPass !== $userPassRepeat) {
            throw new RuntimeException('specified passwords do not match');
        }
    }

    if (empty($userPass)) {
        throw new RuntimeException('Password cannot be empty');
    }

    $configFile = sprintf('%s/config/config.php', $baseDir);
    $config = Config::fromFile($configFile);

    if ('FormPdoAuthentication' !== $config->requireString('authMethod')) {
        echo sprintf('WARNING: backend "%s" does NOT support adding users!', $config->requireString('authMethod')).PHP_EOL;
    }

    $storage = new Storage(
        new PDO(sprintf('sqlite://%s/db.sqlite', $dataDir)),
        sprintf('%s/schema', $baseDir),
        new DateInterval('P90D')    // XXX code smell, not needed here!
    );
    $storage->add($userId, $userPass);
} catch (Exception $e) {
    echo sprintf('ERROR: %s', $e->getMessage()).PHP_EOL;
    exit(1);
}