ShortenUri.php

<?php
/*
	WildPHP - a modular and easily extendable IRC bot written in PHP
	Copyright (C) 2015 WildPHP
	This program is free software: you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation, either version 3 of the License, or
	(at your option) any later version.
	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.
	You should have received a copy of the GNU General Public License
	along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
namespace WildPHP\API;
use WildPHP\API\Exceptions\InvalidUriException;
use WildPHP\API\Exceptions\ShortUriCreationFailedException;
class ShortenUri
{
	/**
	 * @param string $uri
	 * @return string
	 */
	public static function createShortLink($uri)
	{
		if (!Validation::isValidLink($uri))
			throw new InvalidUriException($uri . ' is not a valid link');
		// Pieces...
		$shortenerBaseUrl = 'http://is.gd/create.php?format=json&url=%s';
		$uri = urlencode($uri);
		// Add them together...
		$shortenerUrl = sprintf($shortenerBaseUrl, $uri);
		// And fire a request.
		$body = Remote::getUriBody($shortenerUrl);
		$contents = $body->getContents();
		if (!($decoded = json_decode($contents)) || empty($decoded->shorturl))
			throw new ShortUriCreationFailedException('Received an invalid result set');
		return $decoded->shorturl;
	}
}