phpbb-extensions/mediaembed

<?php
/**
 *
 * phpBB Media Embed PlugIn extension for the phpBB Forum Software package.
 *
 * @copyright (c) 2016 phpBB Limited <https://www.phpbb.com>
 * @license GNU General Public License, version 2 (GPL-2.0)
 *
 */

namespace phpbb\mediaembed;

class ext extends \phpbb\extension\base
{
    /**
     * @var string Minimum requirements:
     * phpBB 3.3.2 because using role_exists in migrations
     * phpBB 3.3.2 because TextFormatter 2.7.5 supports clyp.it and codepen.com
     */
    public const PHPBB_MINIMUM = '3.3.2';

    /**
     * @var string YAML file extension
     */
    public const YML = '.yml';

    /**
     * @var array An array of installation error messages
     */
    protected $errors = [];

    /**
     * {@inheritDoc}
     */
    public function is_enableable()
    {
        return $this->check_phpbb_version()
            ->check_s9e_mediaembed()
            ->result();
    }

    /**
     * Check the installed phpBB version meets this
     * extension's requirements.
     *
     * @return \phpbb\mediaembed\ext
     */
    protected function check_phpbb_version()
    {
        if (phpbb_version_compare(PHPBB_VERSION, self::PHPBB_MINIMUM, '<'))
        {
            $this->errors[] = 'PHPBB_VERSION_ERROR';
        }

        return $this;
    }

    /**
     * Check if s9e MediaEmbed extension for phpBB is installed
     * (it must NOT be to enable this extension).
     *
     * @return \phpbb\mediaembed\ext
     */
    protected function check_s9e_mediaembed()
    {
        $ext_manager = $this->container->get('ext.manager');

        if ($ext_manager->is_enabled('s9e/mediaembed'))
        {
            $this->errors[] = 'S9E_MEDIAEMBED_ERROR';
        }

        return $this;
    }

    /**
     * Return the is enableable result. Either true, or the best enable failed
     * response for the current phpBB environment: array of error messages
     * in phpBB 3.3 or newer, false otherwise.
     *
     * @return array|bool
     */
    protected function result()
    {
        if (empty($this->errors))
        {
            return true;
        }

        if (phpbb_version_compare(PHPBB_VERSION, '3.3.0-b1', '>='))
        {
            $language = $this->container->get('language');
            $language->add_lang('install', 'phpbb/mediaembed');
            return array_map([$language, 'lang'], $this->errors);
        }

        return false;
    }
}