<?php

namespace Fgm\Drupal\Composer;

use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputDefinition;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Yaml\Yaml;

/**
 * Build the services.yml file for all sites in the multisite.
 *
 * @package Fgm\Drupal\Composer
 */
class BuildServicesCommand extends BaseBuilderCommand {

  /**
   * Machine name of current building process.
   *
   * Used as file name if none provided.
   */
  const BUILD_NAME = 'services';


  /**
   * The event triggering this command.
   *
   * @var string
   */
  protected $eventName;

  /**
   * Configures the current command.
   */
  public function configure() {
    parent::configure();
    $this->eventName = $this->getName();
    $this
      ->setName('build:services')
      ->setDescription('Step 5: build the services.yml file.')
      ->setDefinition(
        new InputDefinition([
          new InputArgument(static::ARG_FILE, InputArgument::OPTIONAL, '', static::BUILD_NAME),
        ])
      )
      ->setHelp(
        <<<EOT
The build:services command combines shared and per-environment parameters and passes
them to the services.local.yml.twig template to build the settings/services.yml file.

EOT
      );
  }

  /**
   * Executes the current command.
   *
   * {@inheritDoc}
   */
  public function execute(InputInterface $input, OutputInterface $output): int {
    [
      $params,
      $msg,
      $err,
    ] = $this->getParams();
    if ($err != 0) {
      $output->writeln($msg);
      return $err;
    }

    foreach ($params['sites'] as $name => $siteParams) {
      $services = [];
      if (!empty($siteParams['parameters'])) {
        $services['parameters'] = $siteParams['parameters'];
      }
      if (!empty($siteParams['services'])) {
        $services['services'] = $siteParams['services'];
      }
      if (!$services) {
        return 0;
      }
      $fileName = $input->getArgument(static::ARG_FILE);
      $destination = "web/sites/$name/$fileName.yml";
      if (file_exists($destination)) {
        $ok = unlink($destination);
        if (!$ok) {
          return 1;
        }
      }
      // Convert PHP array to Yaml.
      $yamlServices = Yaml::dump($services, 4, 2);
      $ok = file_put_contents($destination, $yamlServices, LOCK_EX);
      if (!$ok) {
        return 2;
      }
    }

    return 0;
  }

}