correctly update the collection when music files are moved around

apps/media/ajax/api.php

@@ -134,7 +134,7 @@ if($arguments['action']){
 	}
 }
 
-function findMusic($path='/'){
+function findMusic($path=''){
 	$music=array();
 	$dh=OC_Filesystem::opendir($path);
 	if($dh){

apps/media/lib_collection.php

@@ -251,10 +251,12 @@ class OC_MEDIA_COLLECTION{
 		if($name=='' or $path==''){
 			return 0;
 		}
-		$uid=$_SESSION['user_id'];
+		$uid=OC_User::getUser();
 		//check if the song is already in the database
 		$songId=self::getSongId($name,$artist,$album);
 		if($songId!=0){
+			$songInfo=self::getSong($songId);
+			self::moveSong($songInfo['song_path'],$path);
 			return $songId;
 		}else{
 			if(!isset(self::$queries['addsong'])){
@@ -357,13 +359,23 @@ class OC_MEDIA_COLLECTION{
 	 */
 	public static function getSongByPath($path){
 		$query=OC_DB::prepare("SELECT song_id FROM *PREFIX*media_songs WHERE song_path = ?");
-		$result=$query->execute(array($path))->fetchAll();
-		if(count($result)>0){
-			return $result[0]['song_id'];
+		$result=$query->execute(array($path));
+		if($row=$result->fetchRow()){
+			return $row['song_id'];
 		}else{
 			return 0;
 		}
 	}
+	
+	/**
+	 * set the path of a song
+	 * @param string $oldPath
+	 * @param string $newPath
+	 */
+	public static function moveSong($oldPath,$newPath){
+		$query=OC_DB::prepare("UPDATE *PREFIX*media_songs SET song_path = ? WHERE song_path = ?");
+		$query->execute(array($newPath,$oldPath));
+	}
 }
 
 ?>
\ No newline at end of file

apps/media/lib_media.php

@@ -30,6 +30,9 @@ OC_Hook::connect('OC_Filesystem','post_write','OC_MEDIA','updateFile');
 //listen for file deletions to clean the database if a song is deleted
 OC_Hook::connect('OC_Filesystem','delete','OC_MEDIA','deleteFile');
 
+//list for file moves to update the database
+OC_Hook::connect('OC_Filesystem','post_rename','OC_MEDIA','moveFile');
+
 class OC_MEDIA{
 	/**
 	 * get the sha256 hash of the password needed for ampache
@@ -61,6 +64,7 @@ class OC_MEDIA{
 			$path=substr($path,1);
 		}
 		$path='/'.$path;
+		error_log("$path was updated");
 		OC_MEDIA_SCANNER::scanFile($path);
 	}
 
@@ -72,6 +76,11 @@ class OC_MEDIA{
 		require_once 'lib_collection.php';
 		OC_MEDIA_COLLECTION::deleteSongByPath($path);
 	}
+
+	public static function moveFile($params){
+		require_once 'lib_collection.php';
+		OC_MEDIA_COLLECTION::moveSong($params['oldpath'],$params['newpath']);
+	}
 }
 
 class OC_MediaSearchProvider extends OC_Search_Provider{