<?php

namespace App\Commands;

use Illuminate\Console\Scheduling\Schedule;
use LaravelZero\Framework\Commands\Command;
use Illuminate\Support\Facades\File;

use App\Facades\Install;

use Hackzilla\PasswordGenerator\Generator\ComputerPasswordGenerator;
use Hackzilla\PasswordGenerator\RandomGenerator\Php7RandomGenerator;

/**
 *  Install Mariadb
 *
 *  @author Björn Hase, Tentakelfabrik
 *  @license http://opensource.org/licenses/MIT The MIT License
 *  @link https://gitea.tentakelfabrik.de/Tentakelfabrik/mcp
 *
 */
class MariadbInstallCommand extends Command
{
    // destination for username and password
    const MCP_LOG_FILE = '/root/mcp.log';

    // length for password
    const PASSWORD_LENGTH = 40;

    /**
     * The signature of the command.
     *
     * @var string
     */
    protected $signature = 'mariadb:install {version=10.4} {--remote}';

    /**
     * The description of the command.
     *
     * @var string
     */
    protected $description = 'Install Mariadb and set configuration';

    /**
     * Execute the console command.
     *
     * @return mixed
     */
    public function handle()
    {
        $this->info('Mariadb install...');
        $version = $this->argument('version');

        exec('apt update 2>&1', $output);

        // @TODO apt add a Warning for no good, in a later version output will be scanned for helpfull infos
        $this->line(implode("\n", Install::filterAptMessages($output)));

        if ($version === '10.4') {

            $this->info('Mariadb try install 10.04...');

            // getting release
            $release = Install::getDistributionRelease();

            if (Install::getDistributionId() === 'Ubuntu' &&  ($release === '18.04' || $release === '20.04')) {
                $this->info('Mariadb install for Ubuntu '.$release.'...');

                $output = [];
                exec('apt install -y software-properties-common 2>&1', $output);
                exec('apt-key adv --recv-keys --keyserver hkp://keyserver.ubuntu.com:80 0xF1656F24C74CD1D8 2>&1', $output);
                exec('add-apt-repository -y "deb [arch=amd64,arm64,ppc64el] http://mariadb.mirror.liquidtelecom.com/repo/10.4/ubuntu '.Install::getDistributionCodename().' main" 2>&1', $output);
                exec('apt update 2>&1', $output);
            }
        }

        exec('apt install -y mariadb-server mariadb-client 2>&1', $output);

        // @TODO apt add a Warning for no good, in a later version output will be scanned for helpfull infos
        $this->line(implode("\n", Install::filterAptMessages($output)));

        if (Install::isReady('mariadb-server') && Install::isReady('mariadb-client')) {

            $this->info('Mariadb setup...');

            // setting password for root, repeat until
            do {
                $password = $this->secret('Root Password');
                $passwordRepeat = $this->secret('Repeat Root Password');

                if ($password !== $passwordRepeat) {
                    $this->error('Password not equal! Try again!');
                }

                if (empty($password)) {
                    $this->error('Password is empty! Try again!');
                }

            } while ($password !== $passwordRepeat || empty($password));

            // make sure root can only access from local
            $this->info('Mariadb make sure root can ony access from local...');
            system('sudo mysql -u root -e "DELETE FROM mysql.user WHERE User=\'root\' AND Host NOT IN (\'localhost\', \'127.0.0.1\', \'::1\');"');

            // delete anonymous user
            $this->info('Mariadb delete anonymous user...');
            system('sudo mysql -u root -e "DELETE FROM mysql.user WHERE User=\'\';"');

            // drop test database and anthing familiar
            $this->info('Mariadb drop test and anthing familiar...');
            system('sudo mysql -u root -e "DROP DATABASE IF EXISTS test;"');
            system('sudo mysql -u root -e "DELETE FROM mysql.db WHERE Db=\'test\' OR Db=\'test_%\';"');

            // remove plugin for root and set password
            $this->info('Mariadb add password for root...');

            if ($version === '10.4') {
                system('sudo mysql -u root -e "ALTER USER root@localhost IDENTIFIED VIA mysql_native_password USING PASSWORD(\''.$password.'\'); FLUSH PRIVILEGES;"');
            } else {
                system('sudo mysql -u root -e "UPDATE mysql.user SET Password=PASSWORD(\''.$password.'\') WHERE User=\'root\'; FLUSH PRIVILEGES;"');
                system('sudo mysql -u root -e "UPDATE mysql.user SET plugin=\'\' where User=\'root\';"');
            }

            $this->info('Mariadb installing...Success! \o/');

            if ($this->option('remote') === true) {
                $this->removeAccess();
            }

        } else {
            $this->error('Failed! Please check log-file!');
        }
    }

    /**
     *
     *
     */
    private function remoteAccess()
    {
        $this->info('Mariadb remote...');
        system('mkdir -p /etc/mysql/ssl');

        $this->info('Generating CA');
        system('openssl genrsa 4096 > /etc/mysql/ssl/ca-key.pem');
        system('openssl req -new -x509 -nodes -days 365000 -key /etc/mysql/ssl/ca-key.pem -out /etc/mysql/ssl/ca-cert.pem -subj "/CN='.$name.'-mysql-ca"');

        $this->info('Generating Server Certificate');
        system('openssl req -newkey rsa:4096 -days 365000 -nodes -keyout /etc/mysql/ssl/server-key.pem -out /etc/mysql/ssl/server-req.pem -subj "/CN='.$name.'-mysql-server"');
        system('openssl rsa -in /etc/mysql/ssl/server-key.pem -out /etc/mysql/ssl/server-key.pem');
        system('openssl x509 -req -in /etc/mysql/ssl/server-req.pem -days 365000 -CA /etc/mysql/ssl/ca-cert.pem -CAkey /etc/mysql/ssl/ca-key.pem -set_serial 01 -out /etc/mysql/ssl/server-cert.pem');

        $this->info('Generating Client Certificate');
        system('openssl req -newkey rsa:4096 -days 365000 -nodes -keyout /etc/mysql/ssl/client-key.pem -out /etc/mysql/ssl/client-req.pem -subj "/CN='.$name.'-mysql-server"');
        system('openssl rsa -in /etc/mysql/ssl/client-key.pem -out /etc/mysql/ssl/client-key.pem');
        system('openssl x509 -req -in /etc/mysql/ssl/client-req.pem -days 365000 -CA /etc/mysql/ssl/ca-cert.pem -CAkey /etc/mysql/ssl/ca-key.pem -set_serial 01 -out /etc/mysql/ssl/client-cert.pem');

        $this->info('Validate Certificates');
        system('openssl verify -CAfile /etc/mysql/ssl/ca-cert.pem /etc/mysql/ssl/server-cert.pem /etc/mysql/ssl/client-cert.pem');

        system('cat >> /etc/mysql/my.cnf << EOF
[mysqld]
bind-address = 0.0.0.0

ssl-ca=/etc/mysql/ssl/ca-cert.pem
ssl-cert=/etc/mysql/ssl/server-cert.pem
ssl-key=/etc/mysql/ssl/server-key.pem

[client]
ssl-ca=/etc/mysql/ssl/ca-cert.pem
ssl-cert=/etc/mysql/ssl/client-cert.pem
ssl-key=/etc/mysql/ssl/client-key.pem
        EOF');

        system('chown -R mysql:mysql /etc/mysql/ssl');
        system('chmod 644 /etc/mysql/ssl/*cert*');
        system('chmod 644 /etc/mysql/ssl/*key*');

        system('service restart mariadb');
        system('ufw allow mysql');

        $this->info('Mariadb remote...Success! \o/');
    }
}