<?php
/**
 * Process JSONP request
 *
 * $Id$
 *
 * @author gERD Schaufelberger <gerd@php-tools.net>
 * @package WB
 * @subpackage service
 */

WBClass::load('WBService'
    , 'WBHtml'
    , 'WBHtml_JS');

/**
 * Process JSONP request
 *
 * @version 0.1.0
 * @package WB
 * @subpackage service
 */
class WBService_JSONP extends WBService
{
    /**
     * decide whether to select locale settings from path
     * @var bool
     */
    protected $useI18nFromPath = true;

    /**
     * Render Content and Add JavaScript Padding
     *
     * @todo Implement dynmaic JavaScript load support?
     * @param int $status
     * @param mixed $data to be send
     * @param string $checksum
     * @return bool true
     */
    public function run(&$status, &$data, &$checksum = null)
    {
        if (count($this->path) < 2) {
            $status =   400;
            $data   =   'Invalid path for JSONP request.';
            return true;
        }

        $sel    =   array_shift($this->path);
        $config =   array();
        $this->findLangInPath($this->path);

        $conf   =   WBClass::create('WBConfig');
        $conf->load($this->part . '/jsonp/' . implode('/', $this->path));
        $config =   $conf->get('content');

        $this->mergeRequestParams($config);

        $log    =   array(
            'service'   =>  'jsonp',
            'action'    =>  'run',
            'error'     =>  'none',
            'sel'       =>  $sel,
            'processor' =>  $config['processor'],
            'path'      =>  implode('/', $this->path)
        );

        $this->log->notice($log);

        $this->cont         =   WBClass::create('WBContent_' .  $config['processor']);
        $this->cont->configure(implode('/', $this->path), $config['params'], array());
        $config['params']   =   $this->cont->run();

        // get string from content, afterwards add JavaScript and other HTML gadgets
        $cnt    =   $this->cont->getString();

        $search =   array(
                        'WB.Ajax.update('
                        );
        $repl   =   array(
                        sprintf('WB.Ajax.JSONP.update(\'%s\', ', $sel)
                        );
        $cnt    =   str_replace($search, $repl, $cnt);

        // pre included
        $js     =   array();
        $inc    =   WBHtml_JS::getIncluded(true);
        foreach ($inc as $k => $i) {
            $i      =   str_replace('/', '.', $i);
            $js[]   =   sprintf(WBHtml_JS::FMT_LOADED, $k);
        }
        $js     =   array(sprintf(WBHtml_JS::FMT_CODE, implode("\n", $js)));

        // additional JavaScript
        $js[]   =   WBHtml::get(WBHtml::AREA_HEAD);
        $js[]   =   WBHtml::get(WBHtml::AREA_FOOT);
        $js[]   =   WBHtml::get(WBHtml::AREA_JS_ONLOAD);
        $js     =   implode("\n", $js);

        // add padding
        $data       =   sprintf('WB.Ajax.JSONP.callback("%s", %s, %s);', $sel, json_encode($cnt), json_encode($js));
        $this->res->addHeader('Content-Type', 'application/x-javascript; charset=utf-8;');
        $checksum   =   md5($data);
        $status     =   200;
        return true;
    }
}