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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @copyright Copyright (c) 2017 Vinzenz Rosenkranz <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @author René Gieling <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @license GNU AGPL version 3 or any later version  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  This program is free software: you can redistribute it and/or modify  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  it under the terms of the GNU Affero General Public License as  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  published by the Free Software Foundation, either version 3 of the  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  License, or (at your option) any later version.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  This program is distributed in the hope that it will be useful,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  but WITHOUT ANY WARRANTY; without even the implied warranty of  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  GNU Affero General Public License for more details.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  You should have received a copy of the GNU Affero General Public License  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace OCA\Polls\Controller;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use OCP\IRequest;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use OCP\AppFramework\Controller;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use OCP\AppFramework\Http\DataResponse;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use OCA\Polls\Exceptions\NoUpdatesException;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use OCA\Polls\Service\WatchService;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class WatchController extends Controller { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	/** @var WatchService */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	private $watchService;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	use ResponseHandle;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	public function __construct(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		string $appName,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		IRequest $request,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		WatchService $watchService  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		parent::__construct($appName, $request);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$this->watchService = $watchService;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * Watch poll for updates  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @NoAdminRequired  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @NoCSRFRequired  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                	 */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	public function watchPoll(int $pollId, ?int $offset): DataResponse { | 
            
            
                                                                        
                            
            
                                    
            
            
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                		return $this->responseLong(function () use ($pollId, $offset) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                			$start = time();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                			$timeout = 30;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                			$offset = $offset ?? $start;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                			while (empty($updates) && time() <= $start + $timeout) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                				sleep(1);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                				$updates = $this->watchService->getUpdates($pollId, $offset);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                			}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                			if (empty($updates)) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                				throw new NoUpdatesException;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                			}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                			return ['updates' => $updates];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		});  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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