maybeAddCustomCommands() deployer example

InitCommand.php

<?php

namespace DeployerCommands;

use Deployer\Command\InitCommand as ParentInit;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Style\SymfonyStyle;
use Symfony\Component\Process\Exception\RuntimeException;
use Symfony\Component\Process\PhpProcess;
use Symfony\Component\Process\Process as Process;

class InitCommand extends ParentInit
{
    // Example: Custom class var
    private $domain;

    // Example: Customize command description
    protected function configure(): void
    {
        $this
            ->setName('init')
            ->setDescription('Custom initialization of deployer in your project')
            ->addOption('path', 'p', InputOption::VALUE_OPTIONAL, 'Recipe path');
    }

    // Example: Adding new setDomain() question to dep init
    protected function setTemplateVars(InputInterface $input, OutputInterface $output): void
    {
        $io = new SymfonyStyle($input, $output);

        $this->setRecipePath($input, $io);
        $this->setTemplate($io);
        $this->setRepository($io);
        $this->setProject($io);
        $this->setDomain($io);
        $this->guessHost();
        $this->setHosts($io);
    }

    // Example: Query for domain in init process
    private function setDomain($io): void
    {
        $default = '';
        try {
            $process = Process::fromShellCommandline('basename "$PWD"');
            $default = $process->mustRun()->getOutput();
            $default = trim(rtrim($default, '.com')) . '.com';
        } catch (RuntimeException $e) {
            //@TODO Throw error $e->getMessage();
        }
        $this->domain = $io->ask('Domain', $default);
    }

    // Example: overridden guessHost() based on new setDomain()
    // Assumes that in our custom hosting stack, there will be
    // a file called 'host.php' which will return the site's
    // hostname; if not, guess failed.
    protected function guessHost(): void
    {
        if ($this->domain) {
            $this->tempHostFile = tempnam(sys_get_temp_dir(), 'temp-host-file');

            $ch = curl_init("https://$this->domain/host.php");
            curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
            curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
            curl_setopt($ch, CURLOPT_MAXREDIRS, 10);
            curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5);
            curl_setopt($ch, CURLOPT_TIMEOUT, 5);
            $result = curl_exec($ch);
            curl_close($ch);
          
            if (filter_var($result, FILTER_VALIDATE_DOMAIN, FILTER_FLAG_HOSTNAME)) {
              file_put_contents($this->tempHostFile, $result);
            }
        }
    }
}