<?php

/**
 * Class Bitline
 *
 * by github.com/kythin
 *
 * http://www.blitline.com/docs/examples
 *
 * Very basic starter SDK for PHP for this awesome service! From this code you should be able to do pretty much anything.
 * 
 */


class Blitline {
    public $key;
    public $url = "http://api.blitline.com/job";
    public $response;

    public function __construct($key) {
        $this->key = $key;
    }

    /**
     * onejob
     * A really basic starter function to run basic jobs through blitline.
     * See the examples on http://www.blitline.com/docs/examples for what the call the function names, and the paramaters.
     *
     * @param $src
     * @param $function
     * @param $params
     * @return bool
     */
    public function onejob($src, $function, $params) {

        $extension = '.'.array_pop(explode('.',$src));

        $id = 'image_'.time();

        $packet = array();
        $packet['application_id'] = $this->key;
        $packet['src'] = $src;
        $packet['functions'] = array(
                                    array('name'=>$function,
                                        'params'=>$params,
                                        'save'=>array('image_identifier'=>$id,
                                        'extension' => $extension
                                        )
                                    )
                                );


        if ($extension == ".png") {
            $packet['functions'][0]['save']['png_quantize'] = true;
        }

        //print_r($packet);

        if ($this->sendRequest(array('json'=>json_encode($packet)))) {

            $result = json_decode($this->response, true);

            if (count(@$result['results']['images'])) {
                return array_pop($result['results']['images'])['s3_url'];
            } else {
                //print_r($result);
                return false;
            }

        } else {
            echo "Something went wrong with the send.";
        }


    }


    /**
     * Send Request
     * Generic function to send whatever request has been prepared, and save the response.
     * @return bool
     */
    private function sendRequest($data) {
        $url = $this->url;

        //init the curl request
        $ch = curl_init();
        $qry_str = http_build_query($data);

        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $qry_str);


        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_TIMEOUT, '30');

        //send it off & save the result
        $content = trim(curl_exec($ch));
        curl_close($ch);

        if ($content) {
            $this->response = $content;
            return true;
        } else {
            return false;
        }

    }


}