<?php
/**
* Returns the 100 most recent links in results in past year, sorting by date (most recent first).
* Example:
* http://www.google.com/search?q=sebsauvage&num=100&complete=0&tbs=qdr:y,sbd:1
*    complete=0&num=100 : get 100 results
*    qdr:y : in past year
*    sbd:1 : sort by date (will only work if qdr: is specified)
*/
class GoogleSearchBridge extends BridgeAbstract
{
    const MAINTAINER = "sebsauvage";
    const NAME = "Google search";
    const URI = "https://www.google.com/";
    const CACHE_TIMEOUT = 1800; // 30min
    const DESCRIPTION = "Returns most recent results from Google search.";

    const PARAMETERS = array( array(
        'q'=>array(
            'name'=>"keyword",
            'required'=>true
        )
    ));


    public function collectData()
    {
        $html = '';

        $html = getSimpleHTMLDOM(self::URI
          .'search?q=' . urlencode($this->getInput('q'))
          .'&num=100&complete=0&tbs=qdr:y,sbd:1')
          or returnServerError('No results for this query.');

        $emIsRes = $html->find('div[id=ires]', 0);
        if (!is_null($emIsRes)) {
            foreach ($emIsRes->find('li[class=g]') as $element) {
                $item = array();

                // Extract direct URL from google href (eg. /url?q=...)
                $t = $element->find('a[href]', 0)->href;
                $item['uri'] = ''.$t;
                parse_str(parse_url($t, PHP_URL_QUERY), $parameters);
                if (isset($parameters['q'])) {
                    $item['uri'] = $parameters['q'];
                }
                $item['title'] = $element->find('h3', 0)->plaintext;
                $item['content'] = $element->find('span[class=st]', 0)->plaintext;
                $this->items[] = $item;
            }
        }
    }

    public function getName()
    {
        return $this->getInput('q') .' - Google search';
    }
}