<?php
  
  OCP\JSON::checkLoggedIn();
  OCP\JSON::callCheck();
  OCP\JSON::checkAppEnabled('search_lucene');
  session_write_close();
  
  function index() {
  	$fileIds = OCA\Search_Lucene\Indexer::getUnindexed();
  
  	$eventSource = new OC_EventSource();
  	$eventSource->send('count', count($fileIds));
  
  	$skippedDirs = explode(';', OCP\Config::getUserValue(OCP\User::getUser(), 'search_lucene', 'skipped_dirs', '.git;.svn;.CVS;.bzr'));
  
  	$query = OC_DB::prepare('INSERT INTO `*PREFIX*lucene_status` VALUES (?,?)');
  
  	foreach ($fileIds as $id) {
  		$skipped = false;
  
  		try{
  			//before we start mark the file as error so we know there was a problem when the php execution dies
  			$result = $query->execute(array($id, 'E'));
  
  			$path = OC\Files\Filesystem::getPath($id);
  			$eventSource->send('indexing', $path);
  
  			//clean jobs for indexed file
  			$param=json_encode(array('path'=>$path,'user'=>OCP\User::getUser()));
  			$cleanjobquery = OC_DB::prepare('DELETE FROM `*PREFIX*queuedtasks` WHERE `app`=? AND `parameters`=?');
  			$cleanjobquery->execute(array('search_lucene',$param));
  
  			foreach ($skippedDirs as $skippedDir) {
  				if (strpos($path, '/' . $skippedDir . '/') !== false //contains dir
  					|| strrpos($path, '/' . $skippedDir) === strlen($path) - (strlen($skippedDir) + 1) // ends with dir
  				) {
  					$result = $query->execute(array($id, 'S'));
  					$skipped = true;
  					break;
  				}
  			}
  			if (!$skipped) {
  				if (OCA\Search_Lucene\Indexer::indexFile($path, OCP\User::getUser())) {
  					$result = $query->execute(array($id, 'I'));
  				}
  			}
  
  			if (!$result) {
  				OC_JSON::error(array('message' => 'Could not index file.'));
  				$eventSource->send('error', $path);
  			}
  		} catch (PDOException $e) { //sqlite might report database locked errors when stock filescan is in progress
  			//this also catches db locked exception that might come up when using sqlite
  			\OCP\Util::writeLog('search_lucene',
  				$e->getMessage() . ' Trace:
  ' . $e->getTraceAsString(),
  				\OCP\Util::ERROR);
  			OC_JSON::error(array('message' => 'Could not index file.'));
  			$eventSource->send('error', $e->getMessage());
  			//try to mark the file as new to let it reindex
  			$query->execute(array($id, 'N')); // Add UI to trigger rescan of files with status 'E'rror?
  		}
  	}
  
  	$eventSource->send('done', '');
  	$eventSource->close();
  }
  
  function handleOptimize() {
  	OCA\Search_Lucene\Lucene::optimizeIndex();
  }
  
  if ($_GET['operation']) {
  	switch ($_GET['operation']) {
  		case 'index':
  			index();
  			break;
  		case 'optimize':
  			handleOptimize();
  			break;
  		default:
  			OCP\JSON::error(array('cause' => 'Unknown operation'));
  	}
  }