CreateTagUsecase.php

<?php

/**
 * Ushahidi Platform Admin Tag Create Use Case
 *
 * @author     Ushahidi Team <team@ushahidi.com>
 * @package    Ushahidi\Platform
 * @copyright  2014 Ushahidi
 * @license    https://www.gnu.org/licenses/agpl-3.0.html GNU Affero General Public License Version 3 (AGPL3)
 */

namespace Ushahidi\Usecase\Admin\Tag;

use Ushahidi\Entity\Tag;
use Ushahidi\Tool\Validator;

class Create
{
	private $repo;
	private $valid;

	public function __construct(CreateTagRepository $repo, Validator $valid)
	{
		$this->repo  = $repo;
		$this->valid = $valid;
	}

	private function createSlugForTag($title)
	{
		// todo: this won't work well for non-English tag titles.
		//       a quick survery (of one: Al Jezeera) shows that it might be
		//       better to use UUID for everything. need to address this for
		//       Arabic translations.
		return preg_replace('/\s++/', '-', strtolower($title));
	}

	public function interact($tag, $type)
	{
		$slug = $this->createSlugForTag($tag);

		$this->valid->checkTag(compact('tag', 'type', 'slug'));

		$this->repo->createTag($tag, $slug, $type);

		$id = $this->repo->getCreatedTagID();
		$ts = $this->repo->getCreatedTagTimestamp();

		return new TagEntity($id, $tag, $slug, $type, $ts);
	}
}