blitze / phpBB-ext-sitemaker

<?php

/**

 *

 * @package sitemaker

 * @copyright (c) 2013 Daniel A. (blitze)

 * @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2

 *

 */

namespace blitze\sitemaker;

class ext extends \phpbb\extension\base

{

	/** array */

	protected $errors = [];

	/**

	 * Check whether or not the extension can be enabled.

	 *

	 * @return bool|array

	 */

	public function is_enableable()

	{

		$user = $this->container->get('user');

		$user->add_lang_ext('blitze/sitemaker', 'ext');

		$metadata = $this->get_metadata('blitze/sitemaker');

		$req_phpbb_version = $metadata['extra']['soft-require']['phpbb/phpbb'];

		$phpbb_version = $this->container->get('config')['version'];

		$version_ok = $this->version_is_ok($phpbb_version, $req_phpbb_version);

		$img_dir_ok = $this->image_directory_is_ready();

		if (!$version_ok || !$img_dir_ok)

		{

			$errors = array_merge(['EXTENSION_NOT_ENABLEABLE'], $this->errors);

			return array_map([$user, 'lang'], array_filter($errors), ['', $req_phpbb_version]);

		}

		return true;

	}

	/**

	 * return bool

	*/

	protected function image_directory_is_ready()

	{

		$root_path = $this->container->getParameter('core.root_path');

		$filesystem = $this->container->get('filesystem');

		$images_folder = $root_path . 'images';

		$uploads_folder = $images_folder . '/sitemaker_uploads';

		if (!$filesystem->exists($uploads_folder) && !$filesystem->is_writable($images_folder))

		{

			$this->errors[] = 'IMAGE_DIRECTORY_NOT_WRITABLE';

			return false;

		}

		return true;

	}

	/**

	 * @param string $current_version

	 * @param string $required_version

	 * @return bool

	 */

	protected function version_is_ok($current_version, &$required_version)

	{

		$required_version = html_entity_decode($required_version);

		list($min_req_version, $max_req_version) = array_pad(explode(',', $required_version), 2, '');

		$constraint = $this->get_version_constraint($min_req_version);

		if (!phpbb_version_compare($current_version, $constraint['version'], $constraint['operator']))

		{

			$this->errors[] = 'PHPBB_VERSION_UNMET';

			return false;

		}

		$constraint = $this->get_version_constraint($max_req_version);

		if ($constraint['version'] && !phpbb_version_compare($current_version, $constraint['version'], $constraint['operator']))

		{

			$this->errors[] = 'PHPBB_VERSION_UNMET';

			return false;

		}

		return true;

	}

	/**

	 * @param string $version

	 * @return array

	 */

	protected function get_version_constraint($version)

	{

		$operator = '';

		if (preg_match('/^(\D+)(.+)/i', trim($version), $matches))

		{

			list(, $operator, $version) = $matches;

		}

		return [

			'version' => str_replace('@', '', $version),

			'operator' => $operator ?: '>=',

		];

	}

	/**

	 * Get composer metadata information

	 *

	 * @param string $name

	 * @return array

	 */

	protected function get_metadata($name)

	{

		$ext_manager = $this->container->get('ext.manager');

		$metadata_manager = $ext_manager->create_extension_metadata_manager($name);

		return $metadata_manager->get_metadata('all');

	}

}