List pkp-lib 3.4 events

listEvents.php

<?php

/**
 * @file tools/event/listEvents.php
 *
 * Copyright (c) 2014-2021 Simon Fraser University
 * Copyright (c) 2003-2021 John Willinsky
 * Distributed under the GNU GPL v3. For full terms see the file docs/COPYING.
 *
 * @class listEvents
 * @ingroup tools
 *
 * @brief CLI tool to list all events registered on the system
 */

namespace PKP\tools\event;

use PKP\cliTool\CommandLineTool;
use PKP\core\PKPContainer;
use PKP\core\PKPEventServiceProvider;

use Symfony\Component\Console\Helper\Table;
use Illuminate\Console\OutputStyle;
use Symfony\Component\Console\Input\StringInput;
use Symfony\Component\Console\Output\StreamOutput;

define('APP_ROOT', dirname(dirname(dirname(dirname(dirname(__FILE__))))));
require(APP_ROOT . '/tools/bootstrap.inc.php');

class listEvents extends CommandLineTool
{
    /**
     * Print command usage information.
     */
    public function usage()
    {
        echo "Command-line tool to list all events registered on the system \n"
            . "Usage:\n"
            . "\t{$this->scriptName}: List all events registered\n";
    }

    /**
     * Parse and execute list event command
     */
    public function execute()
    {
        $eventServiceProvider = app()
            ->makeWith(
                PKPEventServiceProvider::class,
                ['app' => PKPContainer::getInstance()]
            );

        $events = [];

        $rawEvents = $eventServiceProvider->getEvents();

        foreach($rawEvents as $event => $listeners) {
            $events[] = [$event, implode(', ', $listeners)];
        }

        $output = new OutputStyle(
            new StringInput(''),
            new StreamOutput(fopen('php://stdout', 'w'))
        );

        $table = new Table($output);
        $table
            ->setHeaders(['Event', 'Listeners'])
            ->setRows($events);
        $table->render();
    }
}

$tool = new listEvents($argv ?? []);
$tool->execute();