/common/libraries/plugin/google/demos/Zend/Gdata/YouTubeVideoBrowser/index.php

<?php

/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Gdata
 * @subpackage Demos
 * @copyright  Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */



/**
 * PHP sample code for the YouTube data API.  Utilizes the Zend Framework
 * Zend_Gdata component to communicate with the YouTube data API.
 *
 * Requires the Zend Framework Zend_Gdata component and PHP >= 5.1.4
 *
 * This sample is run from within a web browser.  These files are required:
 * index.php - the main logic, which interfaces with the YouTube API
 * interface.html - the HTML to represent the web UI
 * web_browser.css - the CSS to define the interface style
 * web_browser.js - the JavaScript used to provide the video list AJAX interface
 *
 * NOTE: If using in production, some additional precautions with regards
 * to filtering the input data should be used.  This code is designed only
 * for demonstration purposes.
 */



/**
 * @see Zend_Loader
 */

require_once 'Zend/Loader.php';



/**
 * @see Zend_Gdata_YouTube
 */

Zend_Loader :: loadClass('Zend_Gdata_YouTube');



/**
 * Finds the URL for the flash representation of the specified video
 *
 * @param  Zend_Gdata_YouTube_VideoEntry $entry The video entry
 * @return string|null The URL or null, if the URL is not found
 */

function findFlashUrl($entry)

{

    foreach ($entry->mediaGroup->content as $content)

    {

        if ($content->type === 'application/x-shockwave-flash')

        {

            return $content->url;

        }

    }

    return null;

}



/**
 * Returns a feed of top rated videos for the specified user
 *
 * @param  string $user The username
 * @return Zend_Gdata_YouTube_VideoFeed The feed of top rated videos
 */

function getTopRatedVideosByUser($user)

{

    $userVideosUrl = 'http://gdata.youtube.com/feeds/users/' . $user . '/uploads';

    $yt = new Zend_Gdata_YouTube();

    $ytQuery = $yt->newVideoQuery($userVideosUrl);

    // order by the rating of the videos
    $ytQuery->setOrderBy('rating');

    // retrieve a maximum of 5 videos
    $ytQuery->setMaxResults(5);

    // retrieve only embeddable videos
    $ytQuery->setFormat(5);

    return $yt->getVideoFeed($ytQuery);

}



/**
 * Returns a feed of videos related to the specified video
 *
 * @param  string $videoId The video
 * @return Zend_Gdata_YouTube_VideoFeed The feed of related videos
 */

function getRelatedVideos($videoId)

{

    $yt = new Zend_Gdata_YouTube();

    $ytQuery = $yt->newVideoQuery();

    // show videos related to the specified video
    $ytQuery->setFeedType('related', $videoId);

    // order videos by rating
    $ytQuery->setOrderBy('rating');

    // retrieve a maximum of 5 videos
    $ytQuery->setMaxResults(5);

    // retrieve only embeddable videos
    $ytQuery->setFormat(5);

    return $yt->getVideoFeed($ytQuery);

}



/**
 * Echo img tags for the first thumbnail representing each video in the
 * specified video feed.  Upon clicking the thumbnails, the video should
 * be presented.
 *
 * @param  Zend_Gdata_YouTube_VideoFeed $feed The video feed
 * @return void
 */

function echoThumbnails($feed)

{

    foreach ($feed as $entry)

    {

        $videoId = $entry->getVideoId();

        echo '<img src="' . $entry->mediaGroup->thumbnail[0]->url . '" ';

        echo 'width="80" height="72" onclick="ytvbp.presentVideo(\'' . $videoId . '\')">';

    }

}



/**
 * Echo the video embed code, related videos and videos owned by the same user
 * as the specified videoId.
 *
 * @param  string $videoId The video
 * @return void
 */

function echoVideoPlayer($videoId)

{

    $yt = new Zend_Gdata_YouTube();

    

    $entry = $yt->getVideoEntry($videoId);

    $videoTitle = $entry->mediaGroup->title;

    $videoUrl = findFlashUrl($entry);

    $relatedVideoFeed = getRelatedVideos($entry->getVideoId());

    $topRatedFeed = getTopRatedVideosByUser($entry->author[0]->name);

    

    print <<<END
    <b>$videoTitle</b><br />
    <object width="425" height="350">
      <param name="movie" value="${videoUrl}&autoplay=1"></param>
      <param name="wmode" value="transparent"></param>
      <embed src="${videoUrl}&autoplay=1" type="application/x-shockwave-flash" wmode="transparent"
        width=425" height="350"></embed>
    </object>
END;

    echo '<br />';

    echoVideoMetadata($entry);

    echo '<br /><b>Related:</b><br />';

    echoThumbnails($relatedVideoFeed);

    echo '<br /><b>Top rated videos by user:</b><br />';

    echoThumbnails($topRatedFeed);

}



/**
 * Echo video metadata
 *
 * @param  Zend_Gdata_YouTube_VideoEntry $entry The video entry
 * @return void
 */

function echoVideoMetadata($entry)

{

    $title = $entry->mediaGroup->title;

    $description = $entry->mediaGroup->description;

    $authorUsername = $entry->author[0]->name;

    $authorUrl = 'http://www.youtube.com/profile?user=' . $authorUsername;

    $tags = $entry->mediaGroup->keywords;

    $duration = $entry->mediaGroup->duration->seconds;

    $watchPage = $entry->mediaGroup->player[0]->url;

    $viewCount = $entry->statistics->viewCount;

    $rating = $entry->rating->average;

    $numRaters = $entry->rating->numRaters;

    $flashUrl = findFlashUrl($entry);

    print <<<END
    <b>Title:</b> ${title}<br />
    <b>Description:</b> ${description}<br />
    <b>Author:</b> <a href="${authorUrl}">${authorUsername}</a><br />
    <b>Tags:</b> ${tags}<br />
    <b>Duration:</b> ${duration} seconds<br />
    <b>View count:</b> ${viewCount}<br />
    <b>Rating:</b> ${rating} (${numRaters} ratings)<br />
    <b>Flash:</b> <a href="${flashUrl}">${flashUrl}</a><br />
    <b>Watch page:</b> <a href="${watchPage}">${watchPage}</a> <br />
END;

}



/**
 * Echo the list of videos in the specified feed.
 *
 * @param  Zend_Gdata_YouTube_VideoFeed $feed The video feed
 * @return void
 */

function echoVideoList($feed)

{

    echo '<table class="videoList">';

    echo '<tbody width="100%">';

    foreach ($feed as $entry)

    {

        $videoId = $entry->getVideoId();

        $thumbnailUrl = $entry->mediaGroup->thumbnail[0]->url;

        $videoTitle = $entry->mediaGroup->title;

        $videoDescription = $entry->mediaGroup->description;

        print <<<END
        <tr onclick="ytvbp.presentVideo('${videoId}')">
        <td width="130"><img src="${thumbnailUrl}" /></td>
        <td width="100%">
        <a href="#">${videoTitle}</a>
        <p class="videoDescription">${videoDescription}</p>
        </td>
        </tr>
END;

    }

    echo '</table>';

}



/*
 * The main controller logic of the YouTube video browser demonstration app.
 */

$queryType = isset($_POST['queryType']) ? $_POST['queryType'] : null;



if ($queryType === null)

{

    /* display the entire interface */

    include 'interface.html';

}

else 

    if ($queryType == 'show_video')

    {

        /* display an individual video */

        if (array_key_exists('videoId', $_POST))

        {

            $videoId = $_POST['videoId'];

            echoVideoPlayer($videoId);

        }

        else 

            if (array_key_exists('videoId', $_GET))

            {

                $videoId = $_GET['videoId'];

                echoVideoPlayer($videoId);

            }

            else

            {

                echo 'No videoId found.';

                exit();

            }

    }

    else

    {

        /* display a list of videos */

        $searchTerm = $_POST['searchTerm'];

        $startIndex = $_POST['startIndex'];

        $maxResults = $_POST['maxResults'];

        

        $yt = new Zend_Gdata_YouTube();

        $query = $yt->newVideoQuery();

        $query->setQuery($searchTerm);

        $query->setStartIndex($startIndex);

        $query->setMaxResults($maxResults);

        

        /* check for one of the standard feeds, or list from 'all' videos */

        switch ($queryType)

        {

            case 'most_viewed' :

                $query->setFeedType('most viewed');

                $query->setTime('this_week');

                $feed = $yt->getVideoFeed($query);

                break;

            case 'most_recent' :

                $query->setFeedType('most recent');

                $feed = $yt->getVideoFeed($query);

                break;

            case 'recently_featured' :

                $query->setFeedType('recently featured');

                $feed = $yt->getVideoFeed($query);

                break;

            case 'top_rated' :

                $query->setFeedType('top rated');

                $query->setTime('this_week');

                $feed = $yt->getVideoFeed($query);

                break;

            case 'all' :

                $feed = $yt->getVideoFeed($query);

                break;

            default :

                echo 'ERROR - unknown queryType - "' . $queryType . '"';

                break;

        }

        echoVideoList($feed);

    }