PrepareActivationReminderCommand.php

<?php

namespace WPDesk\ActivationReminder\Composer;

use Composer\Command\BaseCommand;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;


/**
 * Can prepare activation reminder for plugin.
 *
 * @package WPDesk\Composer\GitPlugin\Command
 */
class PrepareActivationReminderCommand extends BaseCommand
{

    protected function configure()
    {
        $this
            ->setName('prepare-activation-reminder')
            ->setDescription('Prepares activation reminder for WP Desk plugin.')
            ->addOption( 'no-dev' );
    }

    /**
     * Execute command.
     *
     * @param InputInterface $input
     * @param OutputInterface $output
     * @return int|void|null
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
	    $output->writeln("Creating activation reminder.");

	    $settings = Settings::create_from_composer_settings( $this->getComposer()->getPackage()->getExtra() );

	    $classLoader = require( 'vendor/autoload.php' );
	    $class_map = $classLoader->getClassMap();

	    $random_class = $this->get_random_class( $class_map );
	    $random_letter = strtolower( chr( rand( 65, 90 ) ) );

	    $target_file = $this->create_or_get_target_file_name( $class_map, $random_class, $random_letter );

	    if ( ! file_exists( $target_file ) ) {
		    $target_dir = dirname( $target_file );
		    $output->writeln( "Target file name: $target_file" );
		    copy( 'vendor/wpdesk/wp-wpdesk-activation-reminder/src/Reminder.php', $target_file );
		    $popup_javascript_file = $target_dir . '/popup.js';
		    $popup_css_file        = $target_dir . '/popup.css';
		    copy( 'vendor/wpdesk/wp-wpdesk-activation-reminder/assets/js/popup.js', $popup_javascript_file );
		    copy( 'vendor/wpdesk/wp-wpdesk-activation-reminder/assets/css/popup.css', $popup_css_file );
		    $this->prepare_class( $random_class . $random_letter, $target_file, $popup_javascript_file, $popup_css_file, $settings );
	    }

	    $this->regenerate_autoload( $target_file, $input );

	    $output->writeln( "Activation reminder created." );

		return Command::SUCCESS;
    }

    private function create_or_get_target_file_name( array $class_map, $random_class, $random_letter ) {
    	$target_file_store = 'vendor/wpdesk/wp-wpdesk-activation-reminder/target-file';
    	if ( ! file_exists( $target_file_store ) ) {
		    $target_file = $class_map[ $random_class ];
		    $target_file = str_replace( '.php', $random_letter . '.php', $target_file );