<?php
/*
PHP5 class for bit.ly API
I slightly modified and packaged in a simple PHP5 class the code written by
David Walsh - http://davidwalsh.name/bitly-api-php
The following is an example of usage of this class:

$mbit = new BitlyWalsh($login, $apiKey);
echo $mbit->getShort($yourLongUrl); // echo $mbit->getLong($bitlyShortUrl);

Author:  Carlo Perassi <carlo@perassi.org>
Version: 0.1
Home:    http://perassi.org/2010/07/01/php5-class-for-bit-ly-api/
License: GNU General Public License Version 3 (http://www.gnu.org/licenses/gpl.html)
*/

class BitlyWalsh
{
    private $_apiKey;
    private $_login;

    private $_timeout;

    function __construct($login, $apiKey)
    {
        $this->_login = $login;
        $this->_apiKey  = $apiKey;

        $this->_timeout = 5;
    }

    private function _curlGetResult($url)
    {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $this->_timeout);
        $data = curl_exec($ch);
        curl_close($ch);

        return $data;
    }

    public function getLong($url, $format = 'txt')
    {
        $connectURL = 'http://api.bit.ly/v3/expand?login=' . $this->_login .
                      '&apiKey=' . $this->_apiKey . '&shortUrl=' .
                      urlencode($url) . '&format=' . $format;

        return $this->_curlGetResult($connectURL);
    }

    public function getShort($url, $format = 'txt')
    {
        $connectURL = 'http://api.bit.ly/v3/shorten?login=' . $this->_login .
                      '&apiKey=' . $this->_apiKey . '&uri=' .
                      urlencode($url) . '&format=' . $format;

        return $this->_curlGetResult($connectURL);
    }
}