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Diffstat (limited to 'zend/demos/Zend/Gdata/YouTubeVideoApp/operations.php')
| -rwxr-xr-x | zend/demos/Zend/Gdata/YouTubeVideoApp/operations.php | 1097 |
1 files changed, 1097 insertions, 0 deletions
diff --git a/zend/demos/Zend/Gdata/YouTubeVideoApp/operations.php b/zend/demos/Zend/Gdata/YouTubeVideoApp/operations.php new file mode 100755 index 0000000..c149583 --- /dev/null +++ b/zend/demos/Zend/Gdata/YouTubeVideoApp/operations.php @@ -0,0 +1,1097 @@ +<?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 + * @copyright Copyright (c) 2005-2012 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 >= 5.2.11 + * This sample is run from within a web browser. These files are required: + * session_details.php - a script to view log output and session variables + * operations.php - the main logic, which interfaces with the YouTube API + * index.php - the HTML to represent the web UI, contains some PHP + * video_app.css - the CSS to define the interface style + * video_app.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. + */ +require_once 'Zend/Loader.php'; +Zend_Loader::loadClass('Zend_Gdata_YouTube'); +Zend_Loader::loadClass('Zend_Gdata_AuthSub'); +Zend_Loader::loadClass('Zend_Gdata_App_Exception'); + +/* + * The main controller logic. + * + * POST used for all authenticated requests + * otherwise use GET for retrieve and supplementary values + */ +session_start(); +setLogging('on'); +generateUrlInformation(); + +if (!isset($_POST['operation'])) { + // if a GET variable is set then process the token upgrade + if (isset($_GET['token'])) { + updateAuthSubToken($_GET['token']); + } else { + if (loggingEnabled()) { + logMessage('reached operations.php without $_POST or $_GET variables set', 'error'); + header('Location: index.php'); + } + } +} + +$operation = $_POST['operation']; + +switch ($operation) { + + case 'create_upload_form': + createUploadForm($_POST['videoTitle'], + $_POST['videoDescription'], + $_POST['videoCategory'], + $_POST['videoTags']); + break; + + case 'edit_meta_data': + editVideoData($_POST['newVideoTitle'], + $_POST['newVideoDescription'], + $_POST['newVideoCategory'], + $_POST['newVideoTags'], + $_POST['videoId']); + break; + + case 'check_upload_status': + checkUpload($_POST['videoId']); + break; + + case 'delete_video': + deleteVideo($_POST['videoId']); + break; + + case 'auth_sub_request': + generateAuthSubRequestLink(); + break; + + case 'auth_sub_token_upgrade': + updateAuthSubToken($_GET['token']); + break; + + case 'clear_session_var': + clearSessionVar($_POST['name']); + break; + + case 'retrieve_playlists': + retrievePlaylists(); + break; + + case 'create_playlist': + createPlaylist($_POST['playlistTitle'], $_POST['playlistDescription']); + break; + + case 'delete_playlist': + deletePlaylist($_POST['playlistTitle']); + break; + + case 'update_playlist': + updatePlaylist($_POST['newPlaylistTitle'], + $_POST['newPlaylistDescription'], + $_POST['oldPlaylistTitle']); + break; + + case (strcmp(substr($operation, 0, 7), 'search_') == 0): + // initialize search specific information + $searchType = substr($operation, 7); + searchVideos($searchType, $_POST['searchTerm'], $_POST['startIndex'], + $_POST['maxResults']); + break; + + case 'show_video': + echoVideoPlayer($_POST['videoId']); + break; + + default: + unsupportedOperation($_POST); + break; +} + +/** + * Perform a search on youtube. Passes the result feed to echoVideoList. + * + * @param string $searchType The type of search to perform. + * If set to 'owner' then attempt to authenticate. + * @param string $searchTerm The term to search on. + * @param string $startIndex Start retrieving search results from this index. + * @param string $maxResults The number of results to retrieve. + * @return void + */ +function searchVideos($searchType, $searchTerm, $startIndex, $maxResults) +{ + // create an unauthenticated service object + $youTubeService = new Zend_Gdata_YouTube(); + $query = $youTubeService->newVideoQuery(); + $query->setQuery($searchTerm); + $query->setStartIndex($startIndex); + $query->setMaxResults($maxResults); + + switch ($searchType) { + case 'most_viewed': + $query->setFeedType('most viewed'); + $query->setTime('this_week'); + $feed = $youTubeService->getVideoFeed($query); + break; + case 'most_recent': + $query->setFeedType('most recent'); + $query->setTime('this_week'); + $feed = $youTubeService->getVideoFeed($query); + break; + case 'recently_featured': + $query->setFeedType('recently featured'); + $feed = $youTubeService->getVideoFeed($query); + break; + case 'top_rated': + $query->setFeedType('top rated'); + $query->setTime('this_week'); + $feed = $youTubeService->getVideoFeed($query); + break; + case 'username': + $feed = $youTubeService->getUserUploads($searchTerm); + break; + case 'all': + $feed = $youTubeService->getVideoFeed($query); + break; + case 'owner': + $httpClient = getAuthSubHttpClient(); + $youTubeService = new Zend_Gdata_YouTube($httpClient); + try { + $feed = $youTubeService->getUserUploads('default'); + if (loggingEnabled()) { + logMessage($httpClient->getLastRequest(), 'request'); + logMessage($httpClient->getLastResponse()->getBody(), + 'response'); + } + } catch (Zend_Gdata_App_HttpException $httpException) { + print 'ERROR ' . $httpException->getMessage() + . ' HTTP details<br /><textarea cols="100" rows="20">' + . $httpException->getRawResponseBody() + . '</textarea><br />' + . '<a href="session_details.php">' + . 'click here to view details of last request</a><br />'; + return; + } catch (Zend_Gdata_App_Exception $e) { + print 'ERROR - Could not retrieve users video feed: ' + . $e->getMessage() . '<br />'; + return; + } + echoVideoList($feed, true); + return; + + default: + echo 'ERROR - Unknown search type - \'' . $searchType . '\''; + return; + } + + if (loggingEnabled()) { + $httpClient = $youTubeService->getHttpClient(); + logMessage($httpClient->getLastRequest(), 'request'); + logMessage($httpClient->getLastResponse()->getBody(), 'response'); + } + echoVideoList($feed); +} + +/** + * 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; +} + +/** + * Check the upload status of a video + * + * @param string $videoId The video to check. + * @return string A message about the video's status. + */ +function checkUpload($videoId) +{ + $httpClient = getAuthSubHttpClient(); + $youTubeService = new Zend_Gdata_YouTube($httpClient); + + $feed = $youTubeService->getuserUploads('default'); + $message = 'No further status information available yet.'; + + foreach($feed as $videoEntry) { + if ($videoEntry->getVideoId() == $videoId) { + // check if video is in draft status + try { + $control = $videoEntry->getControl(); + } catch (Zend_Gdata_App_Exception $e) { + print 'ERROR - not able to retrieve control element ' + . $e->getMessage(); + return; + } + + if ($control instanceof Zend_Gdata_App_Extension_Control) { + if (($control->getDraft() != null) && + ($control->getDraft()->getText() == 'yes')) { + $state = $videoEntry->getVideoState(); + if ($state instanceof Zend_Gdata_YouTube_Extension_State) { + $message = 'Upload status: ' . $state->getName() . ' ' + . $state->getText(); + } else { + print $message; + } + } + } + } + } + print $message; +} + +/** + * Store location of the demo application into session variables. + * + * @return void + */ +function generateUrlInformation() +{ + if (!isset($_SESSION['operationsUrl']) || !isset($_SESSION['homeUrl'])) { + $_SESSION['operationsUrl'] = 'http://'. $_SERVER['HTTP_HOST'] + . $_SERVER['PHP_SELF']; + $path = explode('/', $_SERVER['PHP_SELF']); + $path[count($path)-1] = 'index.php'; + $_SESSION['homeUrl'] = 'http://'. $_SERVER['HTTP_HOST'] + . implode('/', $path); + } +} + +/** + * Log a message to the session variable array. + * + * @param string $message The message to log. + * @param string $messageType The type of message to log. + * @return void + */ +function logMessage($message, $messageType) +{ + if (!isset($_SESSION['log_maxLogEntries'])) { + $_SESSION['log_maxLogEntries'] = 20; + } + + if (!isset($_SESSION['log_currentCounter'])) { + $_SESSION['log_currentCounter'] = 0; + } + + $currentCounter = $_SESSION['log_currentCounter']; + $currentCounter++; + + if ($currentCounter > $_SESSION['log_maxLogEntries']) { + $_SESSION['log_currentCounter'] = 0; + } + + $logLocation = 'log_entry_'. $currentCounter . '_' . $messageType; + $_SESSION[$logLocation] = $message; + $_SESSION['log_currentCounter'] = $currentCounter; +} + +/** + * Update an existing video's meta-data. + * + * @param string $newVideoTitle The new title for the video entry. + * @param string $newVideoDescription The new description for the video entry. + * @param string $newVideoCategory The new category for the video entry. + * @param string $newVideoTags The new set of tags for the video entry (whitespace separated). + * @param string $videoId The video id for the video to be edited. + * @return void + */ +function editVideoData($newVideoTitle, $newVideoDescription, $newVideoCategory, $newVideoTags, $videoId) +{ + $httpClient = getAuthSubHttpClient(); + $youTubeService = new Zend_Gdata_YouTube($httpClient); + $feed = $youTubeService->getVideoFeed('https://gdata.youtube.com/feeds/users/default/uploads'); + $videoEntryToUpdate = null; + + foreach($feed as $entry) { + if ($entry->getVideoId() == $videoId) { + $videoEntryToUpdate = $entry; + break; + } + } + + if (!$videoEntryToUpdate instanceof Zend_Gdata_YouTube_VideoEntry) { + print 'ERROR - Could not find a video entry with id ' . $videoId + . '<br />' . printCacheWarning(); + return; + } + + try { + $putUrl = $videoEntryToUpdate->getEditLink()->getHref(); + } catch (Zend_Gdata_App_Exception $e) { + print 'ERROR - Could not obtain video entry\'s edit link: ' + . $e->getMessage() . '<br />'; + return; + } + + $videoEntryToUpdate->setVideoTitle($newVideoTitle); + $videoEntryToUpdate->setVideoDescription($newVideoDescription); + $videoEntryToUpdate->setVideoCategory($newVideoCategory); + + // convert tags from space separated to comma separated + $videoTagsArray = explode(' ', trim($newVideoTags)); + + // strip out empty array elements + foreach($videoTagsArray as $key => $value) { + if (strlen($value) < 2) { + unset($videoTagsArray[$key]); + } + } + + $videoEntryToUpdate->setVideoTags(implode(', ', $videoTagsArray)); + + try { + $updatedEntry = $youTubeService->updateEntry($videoEntryToUpdate, $putUrl); + if (loggingEnabled()) { + logMessage($httpClient->getLastRequest(), 'request'); + logMessage($httpClient->getLastResponse()->getBody(), 'response'); + } + } catch (Zend_Gdata_App_HttpException $httpException) { + print 'ERROR ' . $httpException->getMessage() + . ' HTTP details<br /><textarea cols="100" rows="20">' + . $httpException->getRawResponseBody() + . '</textarea><br />' + . '<a href="session_details.php">' + . 'click here to view details of last request</a><br />'; + return; + } catch (Zend_Gdata_App_Exception $e) { + print 'ERROR - Could not post video meta-data: ' . $e->getMessage(); + return; + } + print 'Entry updated successfully.<br /><a href="#" onclick="' + . 'ytVideoApp.presentFeed(\'search_owner\', 5, 0, \'none\'); ' + . 'ytVideoApp.refreshSearchResults();" >' + . '(refresh your video listing)</a><br />' + . printCacheWarning(); +} + +/** + * Create upload form by sending the incoming video meta-data to youtube and + * retrieving a new entry. Prints form HTML to page. + * + * @param string $VideoTitle The title for the video entry. + * @param string $VideoDescription The description for the video entry. + * @param string $VideoCategory The category for the video entry. + * @param string $VideoTags The set of tags for the video entry (whitespace separated). + * @param string $nextUrl (optional) The URL to redirect back to after form upload has completed. + * @return void + */ +function createUploadForm($videoTitle, $videoDescription, $videoCategory, $videoTags, $nextUrl = null) +{ + $httpClient = getAuthSubHttpClient(); + $youTubeService = new Zend_Gdata_YouTube($httpClient); + $newVideoEntry = new Zend_Gdata_YouTube_VideoEntry(); + + $newVideoEntry->setVideoTitle($videoTitle); + $newVideoEntry->setVideoDescription($videoDescription); + + //make sure first character in category is capitalized + $videoCategory = strtoupper(substr($videoCategory, 0, 1)) + . substr($videoCategory, 1); + $newVideoEntry->setVideoCategory($videoCategory); + + // convert videoTags from whitespace separated into comma separated + $videoTagsArray = explode(' ', trim($videoTags)); + $newVideoEntry->setVideoTags(implode(', ', $videoTagsArray)); + + $tokenHandlerUrl = 'https://gdata.youtube.com/action/GetUploadToken'; + try { + $tokenArray = $youTubeService->getFormUploadToken($newVideoEntry, $tokenHandlerUrl); + if (loggingEnabled()) { + logMessage($httpClient->getLastRequest(), 'request'); + logMessage($httpClient->getLastResponse()->getBody(), 'response'); + } + } catch (Zend_Gdata_App_HttpException $httpException) { + print 'ERROR ' . $httpException->getMessage() + . ' HTTP details<br /><textarea cols="100" rows="20">' + . $httpException->getRawResponseBody() + . '</textarea><br />' + . '<a href="session_details.php">' + . 'click here to view details of last request</a><br />'; + return; + } catch (Zend_Gdata_App_Exception $e) { + print 'ERROR - Could not retrieve token for syndicated upload. ' + . $e->getMessage() + . '<br /><a href="session_details.php">' + . 'click here to view details of last request</a><br />'; + return; + } + + $tokenValue = $tokenArray['token']; + $postUrl = $tokenArray['url']; + + // place to redirect user after upload + if (!$nextUrl) { + $nextUrl = $_SESSION['homeUrl']; + } + + print <<< END + <br /><form action="${postUrl}?nexturl=${nextUrl}" + method="post" enctype="multipart/form-data"> + <input name="file" type="file"/> + <input name="token" type="hidden" value="${tokenValue}"/> + <input value="Upload Video File" type="submit" /> + </form> +END; +} + +/** + * Deletes a Video. + * + * @param string $videoId Id of the video to be deleted. + * @return void + */ +function deleteVideo($videoId) +{ + $httpClient = getAuthSubHttpClient(); + $youTubeService = new Zend_Gdata_YouTube($httpClient); + $feed = $youTubeService->getVideoFeed('https://gdata.youtube.com/feeds/users/default/uploads'); + $videoEntryToDelete = null; + + foreach($feed as $entry) { + if ($entry->getVideoId() == $videoId) { + $videoEntryToDelete = $entry; + break; + } + } + + // check if videoEntryToUpdate was found + if (!$videoEntryToDelete instanceof Zend_Gdata_YouTube_VideoEntry) { + print 'ERROR - Could not find a video entry with id ' . $videoId . '<br />'; + return; + } + + try { + $httpResponse = $youTubeService->delete($videoEntryToDelete); + if (loggingEnabled()) { + logMessage($httpClient->getLastRequest(), 'request'); + logMessage($httpClient->getLastResponse()->getBody(), 'response'); + } + + } catch (Zend_Gdata_App_HttpException $httpException) { + print 'ERROR ' . $httpException->getMessage() + . ' HTTP details<br /><textarea cols="100" rows="20">' + . $httpException->getRawResponseBody() + . '</textarea><br />' + . '<a href="session_details.php">' + . 'click here to view details of last request</a><br />'; + return; + } catch (Zend_Gdata_App_Exception $e) { + print 'ERROR - Could not delete video: '. $e->getMessage(); + return; + } + + print 'Entry deleted succesfully.<br />' . $httpResponse->getBody() + . '<br /><a href="#" onclick="' + . 'ytVideoApp.presentFeed(\'search_owner\', 5, 0, \'none\');"' + . '">(refresh your video listing)</a><br />' + . printCacheWarning(); +} + +/** + * Enables logging. + * + * @param string $loggingOption 'on' to turn logging on, 'off' to turn logging off. + * @param integer|null $maxLogItems Maximum items to log, default is 10. + * @return void + */ +function setLogging($loggingOption, $maxLogItems = 10) +{ + switch ($loggingOption) { + case 'on' : + $_SESSION['logging'] = 'on'; + $_SESSION['log_currentCounter'] = 0; + $_SESSION['log_maxLogEntries'] = $maxLogItems; + break; + + case 'off': + $_SESSION['logging'] = 'off'; + break; + } +} + +/** + * Check whether logging is enabled. + * + * @return boolean Return true if session variable for logging is set to 'on'. + */ +function loggingEnabled() +{ + if ($_SESSION['logging'] == 'on') { + return true; + } +} + +/** + * Unset a specific session variable. + * + * @param string $name Name of the session variable to delete. + * @return void + */ +function clearSessionVar($name) +{ + if (isset($_SESSION[$name])) { + unset($_SESSION[$name]); + } + header('Location: session_details.php'); +} + +/** + * Generate an AuthSub request Link and print it to the page. + * + * @param string $nextUrl URL to redirect to after performing the authentication. + * @return void + */ +function generateAuthSubRequestLink($nextUrl = null) +{ + $scope = 'https://gdata.youtube.com'; + $secure = false; + $session = true; + + if (!$nextUrl) { + generateUrlInformation(); + $nextUrl = $_SESSION['operationsUrl']; + } + + $url = Zend_Gdata_AuthSub::getAuthSubTokenUri($nextUrl, $scope, $secure, $session); + echo '<a href="' . $url + . '"><strong>Click here to authenticate with YouTube</strong></a>'; +} + +/** + * Upgrade the single-use token to a session token. + * + * @param string $singleUseToken A valid single use token that is upgradable to a session token. + * @return void + */ +function updateAuthSubToken($singleUseToken) +{ + try { + $sessionToken = Zend_Gdata_AuthSub::getAuthSubSessionToken($singleUseToken); + } catch (Zend_Gdata_App_Exception $e) { + print 'ERROR - Token upgrade for ' . $singleUseToken + . ' failed : ' . $e->getMessage(); + return; + } + + $_SESSION['sessionToken'] = $sessionToken; + generateUrlInformation(); + header('Location: ' . $_SESSION['homeUrl']); +} + +/** + * Convenience method to obtain an authenticted Zend_Http_Client object. + * + * @return Zend_Http_Client An authenticated client. + */ +function getAuthSubHttpClient() +{ + try { + $httpClient = Zend_Gdata_AuthSub::getHttpClient($_SESSION['sessionToken']); + } catch (Zend_Gdata_App_Exception $e) { + print 'ERROR - Could not obtain authenticated Http client object. ' + . $e->getMessage(); + return; + } + $httpClient->setHeaders('X-GData-Key', 'key='. $_SESSION['developerKey']); + return $httpClient; +} + +/** + * 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(); + $firstThumbnail = htmlspecialchars( + $entry->mediaGroup->thumbnail[0]->url); + echo '<img id="' . $videoId . '" class="thumbnail" src="' + . $firstThumbnail .'" width="130" height="97" onclick="' + . 'ytVideoApp.presentVideo(\'' . $videoId . '\', 1);" ' + . 'title="click to watch: ' . + htmlspecialchars($entry->getVideoTitle()) . '" />'; + } +} + +/** + * Echo the list of videos in the specified feed. + * + * @param Zend_Gdata_YouTube_VideoFeed $feed The video feed. + * @param boolean|null $authenticated If true then the videoList will + * attempt to create additional forms to edit video meta-data. + * @return void + */ +function echoVideoList($feed, $authenticated = false) +{ + $table = '<table id="videoResultList" class="videoList"><tbody>'; + $results = 0; + + foreach ($feed as $entry) { + $videoId = $entry->getVideoId(); + $thumbnailUrl = 'notfound.jpg'; + if (count($entry->mediaGroup->thumbnail) > 0) { + $thumbnailUrl = htmlspecialchars( + $entry->mediaGroup->thumbnail[0]->url); + } + + $videoTitle = htmlspecialchars($entry->getVideoTitle()); + $videoDescription = htmlspecialchars($entry->getVideoDescription()); + $videoCategory = htmlspecialchars($entry->getVideoCategory()); + $videoTags = $entry->getVideoTags(); + + $table .= '<tr id="video_' . $videoId . '">' + . '<td width="130"><img onclick="ytVideoApp.presentVideo(\'' + . $videoId. '\')" src="' . $thumbnailUrl. '" /></td>' + . '<td><a href="#" onclick="ytVideoApp.presentVideo(\'' + . $videoId . '\')">'. stripslashes($videoTitle) . '</a>' + . '<p class="videoDescription">' + . stripslashes($videoDescription) . '</p>' + . '<p class="videoCategory">category: ' . $videoCategory + . '</p><p class="videoTags">tagged: ' + . htmlspecialchars(implode(', ', $videoTags)) . '</p>'; + + if ($authenticated) { + $table .= '<p class="edit">' + . '<a onclick="ytVideoApp.presentMetaDataEditForm(\'' + . addslashes($videoTitle) . '\', \'' + . addslashes($videoDescription) . '\', \'' + . $videoCategory . '\', \'' + . addslashes(implode(', ', $videoTags)) . '\', \'' + . $videoId . '\');" href="#">edit video data</a> | ' + . '<a href="#" onclick="ytVideoApp.confirmDeletion(\'' + . $videoId + . '\');">delete this video</a></p><br clear="all">'; + } + + $table .= '</td></tr>'; + $results++; + } + + if ($results < 1) { + echo '<br />No results found<br /><br />'; + } else { + echo $table .'</tbody></table><br />'; + } +} + +/** + * 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) +{ + $youTubeService = new Zend_Gdata_YouTube(); + + try { + $entry = $youTubeService->getVideoEntry($videoId); + } catch (Zend_Gdata_App_HttpException $httpException) { + print 'ERROR ' . $httpException->getMessage() + . ' HTTP details<br /><textarea cols="100" rows="20">' + . $httpException->getRawResponseBody() + . '</textarea><br />' + . '<a href="session_details.php">' + . 'click here to view details of last request</a><br />'; + return; + } + + $videoTitle = htmlspecialchars($entry->getVideoTitle()); + $videoUrl = htmlspecialchars(findFlashUrl($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); +} + +/** + * 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) +{ + $youTubeService = new Zend_Gdata_YouTube(); + $ytQuery = $youTubeService->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 $youTubeService->getVideoFeed($ytQuery); +} + +/** + * 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 = 'https://gdata.youtube.com/feeds/users/' . + $user . '/uploads'; + $youTubeService = new Zend_Gdata_YouTube(); + $ytQuery = $youTubeService->newVideoQuery($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 $youTubeService->getVideoFeed($ytQuery); +} + +/** + * Echo video metadata + * + * @param Zend_Gdata_YouTube_VideoEntry $entry The video entry + * @return void + */ +function echoVideoMetadata($entry) +{ + $title = htmlspecialchars($entry->getVideoTitle()); + $description = htmlspecialchars($entry->getVideoDescription()); + $authorUsername = htmlspecialchars($entry->author[0]->name); + $authorUrl = 'http://www.youtube.com/profile?user=' . + $authorUsername; + $tags = htmlspecialchars(implode(', ', $entry->getVideoTags())); + $duration = htmlspecialchars($entry->getVideoDuration()); + $watchPage = htmlspecialchars($entry->getVideoWatchPageUrl()); + $viewCount = htmlspecialchars($entry->getVideoViewCount()); + $rating = 0; + if (isset($entry->rating->average)) { + $rating = $entry->rating->average; + } + $numRaters = 0; + if (isset($entry->rating->numRaters)) { + $numRaters = $entry->rating->numRaters; + } + $flashUrl = htmlspecialchars(findFlashUrl($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; +} + +/** + * Print message about YouTube caching. + * + * @return string A message + */ +function printCacheWarning() +{ + return '<p class="note">' + . 'Please note that the change may not be reflected in the API ' + . 'immediately due to caching.<br/>' + . 'Please refer to the API documentation for more details.</p>'; +} + +/** + * Retrieve playlists for the currently authenticated user and print. + * @return void + */ +function retrievePlaylists() +{ + $httpClient = getAuthSubHttpClient(); + $youTubeService = new Zend_Gdata_YouTube($httpClient); + $feed = $youTubeService->getPlaylistListFeed('default'); + + if (loggingEnabled()) { + logMessage($httpClient->getLastRequest(), 'request'); + logMessage($httpClient->getLastResponse()->getBody(), 'response'); + } + + if (!$feed instanceof Zend_Gdata_YouTube_PlaylistListFeed) { + print 'ERROR - Could not retrieve playlists<br />'. + printCacheWarning(); + return; + } + + $playlistEntries = '<ul>'; + $entriesFound = 0; + foreach($feed as $entry) { + $playlistTitle = $entry->getTitleValue(); + $playlistDescription = $entry->getDescription()->getText(); + $playlistEntries .= '<li><h3>' . $playlistTitle + . '</h3>' . $playlistDescription . ' | ' + . '<a href="#" onclick="ytVideoApp.prepareUpdatePlaylistForm(\'' + . $playlistTitle . '\', \'' . $playlistDescription + . '\'); ">update</a> | ' + . '<a href="#" onclick="ytVideoApp.confirmPlaylistDeletion(\'' + . $playlistTitle . '\');">delete</a></li>'; + $entriesFound++; + } + + $playlistEntries .= '</ul><br /><a href="#" ' + . 'onclick="ytVideoApp.prepareCreatePlaylistForm(); ' + . 'return false;">' + . 'Add new playlist</a><br />' + . '<div id="addNewPlaylist"></div>'; + + if (loggingEnabled()) { + logMessage($httpClient->getLastRequest(), 'request'); + logMessage($httpClient->getLastResponse()->getBody(), 'response'); + } + if ($entriesFound > 0) { + print $playlistEntries; + } else { + print 'No playlists found'; + } +} + +/** + * Create a new playlist for the currently authenticated user + * + * @param string $playlistTitle Title of the new playlist + * @param string $playlistDescription Description for the new playlist + * @return void + */ +function createPlaylist($playlistTitle, $playlistDescription) +{ + $httpClient = getAuthSubHttpClient(); + $youTubeService = new Zend_Gdata_YouTube($httpClient); + $feed = $youTubeService->getPlaylistListFeed('default'); + if (loggingEnabled()) { + logMessage($httpClient->getLastRequest(), 'request'); + logMessage($httpClient->getLastResponse()->getBody(), 'response'); + } + + $newPlaylist = $youTubeService->newPlaylistListEntry(); + $newPlaylist->description = $youTubeService->newDescription()->setText($playlistDescription); + $newPlaylist->title = $youTubeService->newTitle()->setText($playlistDescription); + + if (!$feed instanceof Zend_Gdata_YouTube_PlaylistListFeed) { + print 'ERROR - Could not retrieve playlists<br />' + . printCacheWarning(); + return; + } + + $playlistFeedUrl = 'https://gdata.youtube.com/feeds/users/default/playlists'; + + try { + $updatedEntry = $youTubeService->insertEntry($newPlaylist, $playlistFeedUrl); + if (loggingEnabled()) { + logMessage($httpClient->getLastRequest(), 'request'); + logMessage($httpClient->getLastResponse()->getBody(), 'response'); + } + } catch (Zend_Gdata_App_HttpException $httpException) { + print 'ERROR ' . $httpException->getMessage() + . ' HTTP details<br /><textarea cols="100" rows="20">' + . $httpException->getRawResponseBody() + . '</textarea><br />' + . '<a href="session_details.php">' + . 'click here to view details of last request</a><br />'; + return; + } catch (Zend_Gdata_App_Exception $e) { + print 'ERROR - Could not create new playlist: ' . $e->getMessage(); + return; + } + + print 'Playlist added succesfully.<br /><a href="#" onclick="' + . 'ytVideoApp.retrievePlaylists();"' + . '">(refresh your playlist listing)</a><br />' + . printCacheWarning(); +} + +/** + * Delete a playlist + * + * @param string $playlistTitle Title of the playlist to be deleted + * @return void + */ +function deletePlaylist($playlistTitle) +{ + $httpClient = getAuthSubHttpClient(); + $youTubeService = new Zend_Gdata_YouTube($httpClient); + $feed = $youTubeService->getPlaylistListFeed('default'); + if (loggingEnabled()) { + logMessage($httpClient->getLastRequest(), 'request'); + logMessage($httpClient->getLastResponse()->getBody(), 'response'); + } + + $playlistEntryToDelete = null; + + foreach($feed as $playlistEntry) { + if ($playlistEntry->getTitleValue() == $playlistTitle) { + $playlistEntryToDelete = $playlistEntry; + break; + } + } + + if (!$playlistEntryToDelete instanceof Zend_Gdata_YouTube_PlaylistListEntry) { + print 'ERROR - Could not retrieve playlist to be deleted<br />' + . printCacheWarning(); + return; + } + + try { + $response = $playlistEntryToDelete->delete(); + if (loggingEnabled()) { + logMessage($httpClient->getLastRequest(), 'request'); + logMessage($httpClient->getLastResponse()->getBody(), 'response'); + } + } catch (Zend_Gdata_App_HttpException $httpException) { + print 'ERROR ' . $httpException->getMessage() + . ' HTTP details<br /><textarea cols="100" rows="20">' + . $httpException->getRawResponseBody() + . '</textarea><br />' + . '<a href="session_details.php">' + . 'click here to view details of last request</a><br />'; + return; + } catch (Zend_Gdata_App_Exception $e) { + print 'ERROR - Could not delete the playlist: ' . $e->getMessage(); + return; + } + + print 'Playlist deleted succesfully.<br />' + . '<a href="#" onclick="ytVideoApp.retrievePlaylists();">' + . '(refresh your playlist listing)</a><br />' . printCacheWarning(); +} + +/** + * Delete a playlist + * + * @param string $newplaylistTitle New title for the playlist to be updated + * @param string $newPlaylistDescription New description for the playlist to be updated + * @param string $oldPlaylistTitle Title of the playlist to be updated + * @return void + */ +function updatePlaylist($newPlaylistTitle, $newPlaylistDescription, $oldPlaylistTitle) +{ + $httpClient = getAuthSubHttpClient(); + $youTubeService = new Zend_Gdata_YouTube($httpClient); + $feed = $youTubeService->getPlaylistListFeed('default'); + + if (loggingEnabled()) { + logMessage($httpClient->getLastRequest(), 'request'); + logMessage($httpClient->getLastResponse()->getBody(), 'response'); + } + + $playlistEntryToDelete = null; + + foreach($feed as $playlistEntry) { + if ($playlistEntry->getTitleValue() == $oldplaylistTitle) { + $playlistEntryToDelete = $playlistEntry; + break; + } + } + + if (!$playlistEntryToDelete instanceof Zend_Gdata_YouTube_PlaylistListEntry) { + print 'ERROR - Could not retrieve playlist to be updated<br />' + . printCacheWarning(); + return; + } + + try { + $response = $playlistEntryToDelete->delete(); + if (loggingEnabled()) { + logMessage($httpClient->getLastRequest(), 'request'); + logMessage($httpClient->getLastResponse()->getBody(), 'response'); + } + } catch (Zend_Gdata_App_HttpException $httpException) { + print 'ERROR ' . $httpException->getMessage() + . ' HTTP details<br /><textarea cols="100" rows="20">' + . $httpException->getRawResponseBody() + . '</textarea><br />' + . '<a href="session_details.php">' + . 'click here to view details of last request</a><br />'; + return; + } catch (Zend_Gdata_App_Exception $e) { + print 'ERROR - Could not delete the playlist: ' . $e->getMessage(); + return; + } + + print 'Playlist deleted succesfully.<br /><a href="#" onclick="' . + 'ytVideoApp.retrievePlaylists();"'. + '">(refresh your playlist listing)</a><br />'. + printCacheWarning(); +} + +/** + * Helper function if an unsupported operation is passed into this files main loop. + * + * @param array $post (Optional) The post variables that accompanied the operation, if available. + * @return void + */ +function unsupportedOperation($post) +{ + $message = 'ERROR An unsupported operation has been called - post variables received ' + . print_r($post, true); + + if (loggingEnabled()) { + logMessage($message, 'error'); + } + print $message; +} + +?> |