drupal_composer_builder/src/Builder.php

<?php

namespace Fgm\Drupal\Composer;

use Composer\Composer;
use Composer\EventDispatcher\Event;
use Composer\EventDispatcher\EventSubscriberInterface;
use Composer\Installer\InstallerEvents;
use Composer\Installer\PackageEvent;
use Composer\Installer\PackageEvents;
use Composer\IO\IOInterface;
use Composer\Plugin\Capability\Capability;
use Composer\Plugin\Capability\CommandProvider;
use Composer\Plugin\Capable;
use Composer\Plugin\CommandEvent;
use Composer\Plugin\PluginEvents;
use Composer\Plugin\PluginInterface;
use Composer\Script\Event as ScriptEvent;
use Composer\Script\ScriptEvents;
use Symfony\Component\Console\Input\ArgvInput;
use Symfony\Component\Console\Output\ConsoleOutput;

class Builder implements Capable, Capability,  EventSubscriberInterface, PluginInterface {

  /**
   * @var \Composer\Composer
   */
  protected $composer;

  /**
   * @var \Composer\IO\IOInterface
   */
  protected $io;

  /**
   * Apply plugin modifications to Composer
   *
   * @param Composer $composer
   * @param IOInterface $io
   */
  public function activate(Composer $composer, IOInterface $io) {
    $this->composer = $composer;
    $this->io = $io;
  }

  public function getCapabilities() {
    return [
      CommandProvider::class => BuilderCommandProvider::class,
    ];
  }

  /**
   * {@inheritdoc}
   *
   * Available events:
   *
   * - Composer\Installer\InstallerEvents::* -> Composer\Installer\InstallerEvent
   * - Composer\Installer\PackageEvents::* -> Composer\Installer\PackageEvent
   * - Composer\Installer\PluginEvents::INIT -> Composer\EventDispatcher\Event
   * - Composer\Installer\PluginEvents::COMMAND -> Composer\Plugin\CommandEvent
   * - Composer\Installer\PluginEvents::PRE_FILE_DOWNLOAD
   *     -> Composer\Plugin\PreFileDownloadEvent
   * - Composer\Script\ScriptEvents::* -> Composer\Script\Event
   */
  public static function getSubscribedEvents() {
    return [
      ScriptEvents::POST_INSTALL_CMD => 'onScriptEvent',
      ScriptEvents::POST_UPDATE_CMD => 'onScriptEvent',
    ];
  }

  public function onScriptEvent(ScriptEvent $event) {
    $buildCommand = new BuildSettingsCommand($event->getName());
    $buildCommand->run(new ArgvInput([]), new ConsoleOutput());
  }
}