<?php


/**
 * -----------------------------------------------------------------------------
 * com_muscol	Music Collection component for Joomla
 * -----------------------------------------------------------------------------
 *
 * @package		Muscol
 * @copyright	Copyright (C) 2009 - 2016 JoomlaThat!. All rights reserved.
 * @license		http://www.gnu.org/licenses/gpl-2.0.html GNU/GPL v2 or later
 * @author		JoomlaThat!
 * website		http://www.joomlathat.com
 * support		support@joomlathat.com
 */

jimport('joomla.application.component.controller');

class AlbumsController extends JControllerLegacy
{
	function display( $cachable = false, $urlparams = array())
	{
			parent::display($cachable,$urlparams);
	}
}

class ArtistsController extends JControllerLegacy
{

	function display( $cachable = false, $urlparams = array())
	{

		$jinput = JFactory::getApplication()->input;

		$id = $jinput->get('id', 0, 'int');

		//check if ID exists on DB, otherwise show 404
		$exists = true;

		$view = $jinput->get('view', '', 'cmd');

		$db = JFactory::getDbo();

		$form = false;
		$layout = $jinput->get('layout', '', 'string');

		if($layout == "form" || $layout == "simpleform"){
			$form = true;
		}

		$query = null;

		switch ($view) {
			case "album":
				$query = 'SELECT id FROM #__muscol_albums WHERE id = ' . $id ;
			break;
			case "artist": case "songs":
				$query = 'SELECT id FROM #__muscol_artists WHERE id = ' . $id ;
			break;
			case "song":
				$query = 'SELECT id FROM #__muscol_songs WHERE id = ' . $id ;
			break;
			case "file":
				$query = 'SELECT id FROM #__muscol_songs WHERE id = ' . $id ;
				$zip = JRequest::getInt( 'zip' ) ;
				if($zip){//is album
					$query = 'SELECT id FROM #__muscol_albums WHERE id = ' . $id ;
				}

			break;
			case "playlist":
				$query = 'SELECT 1 FROM #__muscol_playlists' ;
			break;
			case "artists":
				require_once(JPATH_SITE.DS.'components'.DS.'com_muscol'.DS.'helpers'.DS.'alphabets.php');
				$letter = $jinput->get('letter', '', 'string');
				$characters = MusColAlphabets::get_characters();

				$inicials 	= $characters['internal'] ;

				if(!in_array($letter, $inicials) && $letter != "") $exists = false;
			break;
			case "search": case "playlists":

			break;
			default:
				JError::raiseError(404, JText::_('JERROR_PAGE_NOT_FOUND'));
			break;
		}

		if($query){
			$db->setQuery($query);
			$exists = $db->loadResult();
		}

		if(!$form){
			if(!$exists){

				JError::raiseError(404, JText::_('JERROR_PAGE_NOT_FOUND'));

			}
		}
		elseif($id){
			if(!$exists){

				JError::raiseError(404, JText::_('JERROR_PAGE_NOT_FOUND'));

			}
		}

		if ($form) {
			$user = JFactory::getUser();

			$id = $jinput->get('id', '', 'int');

			$params =JComponentHelper::getParams( 'com_muscol' );
			$itemid = $params->get('itemid');
			if($itemid != "") $itemid = "&Itemid=" . $itemid;

			if(!$user->id){ // not registered
				switch($view){
					case "album":
					$msg = JText::_('NOT_AUTHORIZED_ALBUMS');
					break;
					case "artist":
					$msg = JText::_('NOT_AUTHORIZED_ARTISTS');
					break;
					case "song":
					$msg = JText::_('NOT_AUTHORIZED_SONGS');
					break;
					default:
					$msg = JText::_('NOT_AUTHORIZED_ALBUMS');
				}

				$link = JRoute::_('index.php?option=com_muscol&view=artists' . $itemid);
				$this->setRedirect($link, $msg);
			}

			else{ // registered

				switch($view){
					case "album":
					$can_edit = $this->check_album_permission($id);
					$msg = JText::_('NOT_AUTHORIZED_ALBUM');
					$link = JRoute::_('index.php?option=com_muscol&view=album&id='. $id . $itemid);
					break;

					case "song":
					$can_edit = $this->check_song_permission($id);
					$msg = JText::_('NOT_AUTHORIZED_SONG');
					$link = JRoute::_('index.php?option=com_muscol&view=song&id='. $id . $itemid);
					break;

					case "artist":
					$can_edit = $this->check_artist_permission($id);
					$msg = JText::_('NOT_AUTHORIZED_ARTIST');
					$link = JRoute::_('index.php?option=com_muscol&view=artist&id='. $id . $itemid);

					if(!$user->authorise('muscol.createartists', 'com_muscol')){
						$can_edit = false ;
						$msg = JText::_('NOT_AUTHORIZED_ARTISTS');
						$link = JRoute::_('index.php?option=com_muscol&view=artists' . $itemid);
					}
					break;

					default:
					$can_edit = $this->check_album_permission($id);
					$msg = JText::_('NOT_AUTHORIZED_ALBUMS');
					$link = JRoute::_('index.php?option=com_muscol&view=album&id='. $id . $itemid);
				}

				if(!$can_edit){

					if(!$id) $link = JRoute::_('index.php?option=com_muscol&view=artists' . $itemid);

					$this->setRedirect($link, $msg);
				}
				else{

					if($view == "album"){
						$db = JFactory::getDbo();

						if(!$user->authorise('muscol.createalbumsallartists', 'com_muscol')) $where_clause = ' WHERE user_id = ' . $user->id;
						else $where_clause = '';

						$query = 'SELECT COUNT(*) FROM #__muscol_artists '. $where_clause ;
						$db->setQuery($query);
						$has_artists = $db->loadResult();

						if(!$has_artists){
							if($user->authorise('muscol.createartists', 'com_muscol')){
								$msg = JText::_('ADD_ARTIST_FIRST');
								$link = JRoute::_('index.php?option=com_muscol&view=artist&layout=form' . $itemid, false);
							}
							else{
								$msg = JText::_('NO_ARTISTS_AVAILABLE');
								$link = JRoute::_('index.php?option=com_muscol&view=artists' . $itemid, false);
							}
							$this->setRedirect($link, $msg);
						}
					}

					parent::display($cachable,$urlparams); // OK
				}
			}
		}

		else {

			parent::display($cachable,$urlparams);
		}
	}

	function check_album_permission($album_id){

		if(!$album_id) return true; // everybody can add an album if is a registered user

		$db = JFactory::getDbo();
		$user = JFactory::getUser();
		$query = 'SELECT user_id FROM #__muscol_albums WHERE id = ' . $album_id ;
		$db->setQuery($query);
		$album_creator = $db->loadResult();

		if($album_creator == $user->id) return true;
		else return false;

	}

	function check_artist_permission($artist_id){

		if(!$artist_id) return true; // everybody can add an album if is a registered user

		$db = JFactory::getDBO();
		$user = JFactory::getUser();
		$query = 'SELECT user_id FROM #__muscol_artists WHERE id = ' . $artist_id ;
		$db->setQuery($query);
		$artist_creator = $db->loadResult();

		if($artist_creator == $user->id) return true;
		else return false;

	}

	function check_song_permission($song_id){

		if(!$song_id) return true; // everybody can add a song if is a registered user

		$db = JFactory::getDbo();
		$user = JFactory::getUser();
		$query = 'SELECT user_id FROM #__muscol_songs WHERE id = ' . $song_id ;
		$db->setQuery($query);
		$song_creator = $db->loadResult();

		if($song_creator == $user->id) return true;
		else return false;

	}

	function save_album()
	{
		$jinput = JFactory::getApplication()->input;

		$params =JComponentHelper::getParams( 'com_muscol' );
		$itemid = $params->get('itemid');
		if($itemid != "") $itemid = "&Itemid=" . $itemid;

		$artist_id = 0;

		$new_artist = $jinput->get('newartist', '', 'string');
		if($new_artist){
			$model = $this->getModel('artist');

			$artist_data['id'] = 0 ;
			$artist_data['artist_name'] = $new_artist ;
			$artist_data['genre_id'] = $jinput->get('genre_id', 0, 'int');

			if ($artist_id = $model->store($artist_data)) {
				$msg_art = JText::_( 'ARTIST_SAVED' );

				JRequest::setVar('artist_id', $artist_id);

			} else {
				$msg_art = JText::_( 'ERROR_SAVING_ARTIST' );

			}
		}

		$model = $this->getModel('album');

		if ($id = $model->store($artist_id)) {
			$msg = JText::_( 'ALBUM_SAVED' );
			$saved_ok = true;

		} else {
			$msg = JText::_( 'ERROR_SAVING_ALBUM' );
			$saved_ok = false;
		}

		$link = JRoute::_('index.php?option=com_muscol&view=album&id='. $id . $itemid) ;

		$this->setRedirect($link, $msg . " " . $msg_art);
	}

	function save_artist()
	{
		$user = JFactory::getUser();
		$model = $this->getModel('artist');

		$params =JComponentHelper::getParams( 'com_muscol' );
		$itemid = $params->get('itemid');

		if($itemid != "") $itemid = "&Itemid=" . $itemid;

		if (!$user->authorise('muscol.createartists', 'com_muscol')) {
			$can_edit = false ;
			$msg = JText::_('NOT_AUTHORIZED_ARTISTS');
			$link = JRoute::_('index.php?option=com_muscol&view=artists' . $itemid);
			$this->setRedirect($link, $msg);
		} else {
			if ($id = $model->store()) {
				$msg = JText::_( 'ARTIST_SAVED' );
				$saved_ok = true;
			} else {
				$msg = JText::_( 'ERROR_SAVING_ARTIST' );
				$saved_ok = false;
			}

			$link = JRoute::_('index.php?option=com_muscol&view=artist&id='. $id . $itemid) ;

			$this->setRedirect($link, $msg);
		}
	}

	function save_song()
	{
		$jinput = JFactory::getApplication()->input;
		$model = $this->getModel('song');

		if ($album_id = $model->store()) {
			$msg = JText::_( 'SONG_SAVED' );
		} else {
			$msg = JText::_( 'ERROR_SAVING_SONG' );
		}

		$params = JComponentHelper::getParams( 'com_muscol' );
		$itemid = $params->get('itemid');
		if($itemid != "") $itemid = "&Itemid=" . $itemid;

		$id = $jinput->get('id', 0, 'int');

		switch($jinput->get('from', '', 'string')){
			case "album":
			$link = JRoute::_('index.php?option=com_muscol&view=album&layout=form&id=' . $album_id . $itemid);
			break;

			default:
			if(!$id)  $link = JRoute::_('index.php?option=com_muscol&view=album&id='. $album_id . $itemid);
			else $link = JRoute::_('index.php?option=com_muscol&view=song&id='. $id . $itemid);
		}

		$this->setRedirect($link, $msg);
	}

	function save_comment()
	{
		$mainframe = JFactory::getApplication();
		$user = JFactory::getUser();
		$model = $this->getModel('album');

		$comment = $model->store_comment() ;
		$comment->username = $user->name;

		if ($comment->id) {
			$msg = JText::_( 'COMMENT_SAVED' );
			$saved_ok = true;
			$type = "message";
		} else {
			$msg = JText::_( 'ERROR_SAVING_COMMENT' );
			$saved_ok = false;
			$type = "error";
		}

		$jinput = $mainframe->input;

		$album_id = $jinput->getInt('album_id', 0);
		$comment_type = $jinput->getCmd('comment_type');

		if($saved_ok){

			//new plugin access
			$dispatcher	= JEventDispatcher::getInstance();
			$plugin_ok = JPluginHelper::importPlugin('muscol');
			$results = $dispatcher->trigger('onSaveComment', array ($album_id, $comment_type));

		}

		$notifications = array();
		$notifications[0] = new stdClass();
		$notifications[0]->type = "message";
		$notifications[0]->message = $msg;

		$return = new stdClass();
		$return->notifications = $notifications;

		$returncomments = array();
		$returncomments[] = $comment;

		$return->content = MusColHelper::prepareCommentsData($returncomments);

		//we return
		echo json_encode($return);

		$mainframe->close();
	}

	function rate(){
		$mainframe = JFactory::getApplication();
        $model = $this->getModel('rating');

		$user_id = JFactory::getUser()->id;
		$saved_ok = false;
		if ($user_id) {
			if ($model->store_rating()) {
				$msg = JText::_( 'RATING_SAVED' );
				$saved_ok = true;
			} else {
				$msg = JText::_( 'ERROR_SAVING_RATING' );
				$saved_ok = false;
			}
		}

		$jinput = $mainframe->input;
		$type = $jinput->get('type', 'album', 'string');
        $album_id = $jinput->get('album_id', 0, 'int');

		if($saved_ok){
			//new plugin access
			$dispatcher	= JEventDispatcher::getInstance();
			$plugin_ok = JPluginHelper::importPlugin('muscol');
			if ($type == 'album') $results = $dispatcher->trigger('onSaveRatingAlbum', array ($album_id));
			else $results = $dispatcher->trigger('onSaveRatingSong', array ($album_id));

		}

		$notifications = array();
		$notifications[0] = new stdClass();
		if (!$user_id) {
			$notifications[0]->type = "message";
			$notifications[0]->message = JText::_('ERROR_LOGIN_FIRST');
		} else {
			if ($saved_ok) {
				$notifications[0]->type = "message";
				$notifications[0]->message = JText::_('RATING_SAVED');
			} else {
				$notifications[0]->type = "warning";
				$notifications[0]->message = JText::_('ERROR_SAVING_RATING');
			}
		}

        echo json_encode(array(
            'success' => $saved_ok,
            'id' => $album_id,
            'rating' => $model->getAlbumRating($album_id, $type),
			'notifications' => $notifications
        ));
        $mainframe->close();
	}

	//AJAX function to add a song to a playlist
	function add_song_to_playlist(){

		$mainframe = JFactory::getApplication();
		$db = JFactory::getDbo();

		$jinput = $mainframe->input;
		$id = $jinput->get('id', 1, 'int');

		$uri = JFactory::getUri();

		if($this->check_playlist_permission( $id )){
			$song_id = $jinput->get('song_id', 1, 'int');

			$model = $this->getModel('playlist');
			$return = $model->add_item($id,$song_id, 's');

			$query = " SELECT s.*,al.name as album_name, al.image, ar.artist_name FROM #__muscol_songs as s
			 LEFT JOIN #__muscol_artists AS ar ON ar.id = s.artist_id
			 LEFT JOIN #__muscol_albums AS al ON al.id = s.album_id WHERE s.id = ".$song_id;
			$db->setQuery($query);
			$song = $db->loadObject();

            $thefile = null;
            if (MusColHelper::isYoutubeFile($song->file)) {
                $thefile = MusColHelper::getYoutubeURL($song->file);
            } else {
                $thefile = MusColHelper::getSongFileURL($song);
            }

            $return = new stdClass();
            $return->notifications = array();
            $return->notifications[0] = new stdClass();
            $return->notifications[0]->type = "message";
            $return->notifications[0]->message = JText::_('SONG_ADDED_TO_PLAYLIST');

            $return->playlistsong = new stdClass();
            $return->playlistsong->title = $song->name ;
            $return->playlistsong->description = $song->artist_name ;
            $return->playlistsong->file = $thefile ;
            $return->playlistsong->image = $uri->base() . "images/albums/" . $song->image ;

            $songs = MusColHelper::prepareSongsData(array($song));
            $song = $songs[0];
            $return->content = $song;
            
			echo json_encode($return);
		}
		else echo 0;

		$mainframe->close();

	}

	function remove_song_playlist(){
		 $mainframe = JFactory::getApplication();
		 $jinput = $mainframe->input;

		 $id = $jinput->get('id', 0, 'int');

		 if ($this->check_playlist_permission($id)) {
			 $model = $this->getModel('playlist');
			if (!$model->remove_songs()) {
				$msg = JText::_( 'ERROR_SONGS_DELETED_PLAYLIST' );
				$msg_type = "error";
				$saved_ok = false;
			} else {
				$msg = JText::_( 'SONGS_DELETED_PLAYLIST' );
				$msg_type = "message";
				$saved_ok = true;
			}
		 }
		else {
			 $msg = JText::_('NOT_ALLOWED_EDIT_PLAYLIST');
			 $msg_type = "notice";
		 }

		echo json_encode($saved_ok);

		$mainframe->close();
	}

	function save_playlist_order(){
		$jinput = JFactory::getApplication()->input;
		$playlist_id = $jinput->post->get('id', 0, 'int');

		if($this->check_playlist_permission($playlist_id)){
			$model = $this->getModel('playlist');
			if(!$model->save_playlist_order()) {
				$msg = JText::_( 'ERROR_PLAYLIST_ORDER_SAVED' );
				$msg_type = "error";
			} else {
				$msg = JText::_( 'PLAYLIST_ORDER_SAVED' );
				$msg_type = "message";
			}
		}
		else{
			$msg = JText::_('NOT_ALLOWED_EDIT_PLAYLIST');
			$msg_type = "notice";
		}

		$params =JComponentHelper::getParams( 'com_muscol' );
		$itemid = $params->get('itemid');
		if($itemid != "") $itemid = "&Itemid=" . $itemid;

		$this->setRedirect( 'index.php?option=com_muscol&view=playlist&id=' . $playlist_id . $itemid, $msg, $msg_type );
	}

	function consolidate_playlist(){
		$mainframe = JFactory::getApplication();
        $jinput = $mainframe->input;
		$user = JFactory::getUser();

		$params =JComponentHelper::getParams( 'com_muscol' );

		if ($user->id && $user->authorise('muscol.allowcreateplaylists', 'com_muscol')) {
            $model = $this->getModel('playlist');
            if (!$model->consolidate_playlist()) {
                $msg = JText::_( 'ERROR_SAVING_PLAYLIST' );
                $msg_type = "error";
            } else {
                $msg = JText::_( 'PLAYLIST_SAVED' );
                $msg_type = "message";
                $saved_ok = true;
            }
		} else {
			$msg = JText::_( 'ADMIN_DISABLED_PLAYLIST_SAVING' );
			$msg_type = "message";
		}

		$itemid = $params->get('itemid');
		if($itemid != "") $itemid = "&Itemid=" . $itemid;


		if($saved_ok){

			/**** JOMSOCIAL INTEGRATION *******/

			if(file_exists( JPATH_BASE . DS . 'components' . DS . 'com_community' . DS . 'libraries' . DS . 'core.php') && $params->get('notify_jomsocial')){

				$query = ' SELECT title as name,user_id, id FROM #__muscol_playlists ORDER BY id DESC ' ;
				$db = JFactory::getDbo();
				$db->setQuery($query);
				$item = $db->loadObject() ;

				$link = JRoute::_('index.php?option=com_muscol&view=playlist&id='.$item->id .  $itemid );

				CFactory::load( 'libraries' , 'activities' );
				$user = JFactory::getUser();

				$act = new stdClass();
				$act->actor 	= $user->id;
				$act->target 	= 0;
				$act->title		= "{actor} ".JText::_('created a')." <a href='".$link."'>" . JText::_('new playlist')  ."</a>" ;
				$act->app		= 'myalbums';
				$act->cid		= $user->id;
				CActivityStream::add($act);

			}

			/*************/
		}

		$link = JRoute::_('index.php?option=com_muscol&view=playlists' .  $itemid );
		$this->setRedirect( $link, $msg, $msg_type );
	}

	function save_playlist(){
		$mainframe = JFactory::getApplication();
		$user = JFactory::getUser();

        $jinput = $mainframe->input;
        $playlist_id = $jinput->get('id', 0, 'int');

        if ($playlist_id == 0) {
            $this->consolidate_playlist();
            return;
        }

		if ($user->id && $this->check_playlist_permission($playlist_id)) { // only can save playlists registered users
			$model = $this->getModel('playlist');
			if(!$model->save_playlist()) {
				$msg = JText::_( 'ERROR_SAVING_PLAYLIST' );
				$msg_type = "error";
			} else {
				$msg = JText::_( 'PLAYLIST_SAVED' );
				$msg_type = "message";
			}
		}
		else{
			$msg = JText::_( 'You are not allowed to edit this playlist' );
			$msg_type = "notice";
		}

		$params =JComponentHelper::getParams( 'com_muscol' );
		$itemid = $params->get('itemid');
		if($itemid != "") $itemid = "&Itemid=" . $itemid;

		$this->setRedirect( 'index.php?option=com_muscol&view=playlist&id=' . $playlist_id .  $itemid, $msg, $msg_type );
	}

	function new_playlist_ajax() {
        $mainframe = JFactory::getApplication();

        $jinput = $mainframe->input;

        $data = array();
        $data['title'] = $jinput->get->get('title', '', 'string');
        $data['description'] = MusColHelper::getHTMLInput('description');
        $data['user_id'] = JFactory::getUser()->id;

        $song = strval($jinput->get->get('song', 0, 'int'));
        if ($song) $data['songs'] = $song;

        $return = new stdClass();
        $return->notifications = array();
        $return->notifications[0] = new stdClass();

        if ($data['user_id']) {
            $model = $this->getModel('playlist');
            $playlist_id = $model->store($data);

            if ($playlist_id) {
                $return->notifications[0]->type = "message";
                $return->notifications[0]->message = JText::_('PLAYLIST_CREATED');
            } else {
                $return->notifications[0]->type = "error";
                $return->notifications[0]->message = JText::_('ERROR_CREATING_PLAYLIST');
            }

            $return->content = new stdClass();
            $return->content->playlist_id = $playlist_id;

            $return->lastPlaylists = MusColHelper::getLastPlaylists();
        } else {
            $return->notifications[0]->type = "error";
            $return->notifications[0]->message = JText::_('REGISTER_BEFORE');
        }

        echo json_encode($return);
        $mainframe->close();
	}

	function remove_playlist(){

		$jinput = JFactory::getApplication()->input;
		$user = JFactory::getUser();

		if($user->id && $this->check_playlist_permission( $jinput->get('id', 0, 'int') ) ){ // only can delete playlists registered users
			$model = $this->getModel('playlist');
			if(!$model->delete_playlist()) {
				$msg = JText::_( 'ERROR_ERASING_PLAYLIST' );
				$msg_type = "error";
			} else {
				$msg = JText::_( 'PLAYLIST_ERASED' );
				$msg_type = "message";
			}
		}
		else{
			$msg = JText::_( 'NOT_ALLOWED_EDIT_PLAYLIST' );
			$msg_type = "notice";
		}

		$params =JComponentHelper::getParams( 'com_muscol' );
		$itemid = $params->get('itemid');
		if($itemid != "") $itemid = "&Itemid=" . $itemid;

		$this->setRedirect( 'index.php?option=com_muscol&view=playlists' .  $itemid, $msg, $msg_type );

	}

	function edit_playlist()
	{
        $jinput = JFactory::getApplication()->input;
		$playlist_id = $jinput->get('id', 0, 'int');

			if($this->check_playlist_permission($playlist_id)) JRequest::setVar( 'layout', 'form' );
			else {
				$params =JComponentHelper::getParams( 'com_muscol' );
				$itemid = $params->get('itemid');
				if($itemid != "") $itemid = "&Itemid=" . $itemid;
				$msg = JText::_('NOT_ALLOWED_EDIT_PLAYLIST');
				$msg_type = "notice";
				$this->setRedirect( 'index.php?option=com_muscol&view=playlist&id=' . $playlist_id .  $itemid, $msg, $msg_type );
			}

		parent::display();
	}

	function check_playlist_permission($playlist_id){
		if(!$playlist_id) return true; // everybody can edit his own on-the-go playlist

		$db = JFactory::getDbo();
		$user = JFactory::getUser();
		$query = 'SELECT user_id FROM #__muscol_playlists WHERE id = ' . $playlist_id ;
		$db->setQuery($query);
		$playlist_creator = $db->loadResult();

		if($playlist_creator == $user->id) return true;
		else return false;

	}

	function remove_songs()
	{
        //this function is called only from the album form template

        $jinput = JFactory::getApplication()->input;
        $album_id = $jinput->get('id', 0, 'int');

		$params =JComponentHelper::getParams( 'com_muscol' );
		$itemid = $params->get('itemid');
		if($itemid != "") $itemid = "&Itemid=" . $itemid;

		$model = $this->getModel('song');

		if(!$model->delete()) {
			$msg = JText::_( 'ERROR_DELETING_SONGS' );
		} else {
			$msg = JText::_( 'SONGS_DELETED' );
		}

		$this->setRedirect( 'index.php?option=com_muscol&view=album&layout=form&id=' . $album_id . $itemid, $msg );
	}

	function erase_album()
	{
        $jinput = JFactory::getApplication()->input;
		$model = $this->getModel('album');

        $id = $jinput->get('id', 0, 'int');
		$confirm = JRequest::getVar('confirm');

		if($confirm){ // delete for real

			$params =JComponentHelper::getParams( 'com_muscol' );
			$itemid = $params->get('itemid');
			if($itemid != "") $itemid = "&Itemid=" . $itemid;

			$can_edit = $this->check_album_permission($id);
			$msg = JText::_('You are not authorized to delete this album');
			$link = JRoute::_('index.php?option=com_muscol&view=album&id='. $id . $itemid);

			if($can_edit){

				if(!$model->delete()) {
					$msg = JText::_( 'ERROR_DELETING_ALBUMS' );
				} else {
					$msg = JText::_( 'ALBUMS_DELETED' );
				}

				$link = JRoute::_('index.php?option=com_muscol&view=artists' . $itemid);

			}

			$this->setRedirect( $link , $msg );

		}
		else{ // ask for confirmation

            $params =JComponentHelper::getParams( 'com_muscol' );
            $itemid = $params->get('itemid');
            if($itemid != "") $itemid = "&Itemid=" . $itemid;

			$can_edit = $this->check_album_permission($id);
			$msg = JText::_('NOT_AUTHORIZED_DELETE_ALBUM');
			$link = JRoute::_('index.php?option=com_muscol&view=album&id='. $id . $itemid);

			if($can_edit){

				echo '<div class="muscol_confirmation">'.JText::_('SURE_DELETE_ALBUM').'</div><br /><div class="muscol_confirmation_buttons"><a href="'.JRoute::_('index.php?option=com_muscol&task=erase_album&id=' . $id .'&confirm=1').'">'.JText::_('Delete').'</a> | <a href="'.JRoute::_('index.php?option=com_muscol&view=album&id='. $id . $itemid).'">'.JText::_('Cancel').'</a></div>' ;

			}
			else{
				$this->setRedirect( $link , $msg );
			}

		}
	}

	function erase_artist()
	{
		$model = $this->getModel('artist');
        $jinput = JFactory::getApplication()->input;

        $id = $jinput->get('id', 0, 'int');
		$confirm = JRequest::getVar('confirm');

		if($confirm){ // delete for real

			$params =JComponentHelper::getParams( 'com_muscol' );
			$itemid = $params->get('itemid');
			if($itemid != "") $itemid = "&Itemid=" . $itemid;

			$can_edit = $this->check_artist_permission($id);
			$msg = JText::_('NOT_AUTHORIZED_DELETE_ARTIST');
			$link = JRoute::_('index.php?option=com_muscol&view=artist&id='. $id . $itemid);

			if($can_edit){

				if(!$model->delete()) {
					$msg = JText::_( 'ERROR_DELETING_ARTISTS' );
				} else {
					$msg = JText::_( 'ARTISTS_DELETED' );
				}

				$link = JRoute::_('index.php?option=com_muscol&view=artists' . $itemid);

			}

			$this->setRedirect( $link , $msg );

		}
		else{ // ask for confirmation

            $params =JComponentHelper::getParams( 'com_muscol' );
            $itemid = $params->get('itemid');
            if($itemid != "") $itemid = "&Itemid=" . $itemid;

			$can_edit = $this->check_artist_permission($id);
			$msg = JText::_('NOT_AUTHORIZED_DELETE_ARTIST');
			$link = JRoute::_('index.php?option=com_muscol&view=artist&id='. $id . $itemid);

			if($can_edit){

				echo '<div class="muscol_confirmation">'.JText::_('SURE_DELETE_ARTIST').'</div><br /><div class="muscol_confirmation_buttons"><a href="'.JRoute::_('index.php?option=com_muscol&task=erase_artist&id=' . $id .'&confirm=1').'">'.JText::_('Delete').'</a> | <a href="'.JRoute::_('index.php?option=com_muscol&view=artist&id='. $id . $itemid).'">'.JText::_('Cancel').'</a></div>' ;

			}
			else{
				$this->setRedirect( $link , $msg );
			}

		}
	}

	function add_song_play_count(){

		$mainframe = JFactory::getApplication();

		$mainframe->close() ;
	}

	function add_song_play_count_module(){

		$mainframe = JFactory::getApplication();
        $jinput = $mainframe->input;

		$params =JComponentHelper::getParams( 'com_muscol' );

        $pos = $jinput->get('pos', 0, 'int');
		$db = JFactory::getDbo();


		$session =JSession::getInstance('','');
		$playlist_id = $session->get('current_playlist') ; // the playlist is an array

		if($playlist_id){
		$query = 'SELECT pl.songs FROM #__muscol_playlists AS pl WHERE pl.id = ' . $playlist_id ;
					;
			$db->setQuery($query);
			$songs_in_playlist = $db->loadResult();
			$playlist = explode(",", $songs_in_playlist) ;
		}
		else{
			$session =JSession::getInstance('','');
			$playlist = $session->get('muscol_playlist') ; // the playlist is an array

		}

		$id = $playlist[$pos];

		$model = $this->getModel('song');

		if($params->get('registersongplays'))  $model->getRegisterHit($id, 4); //4 is for "play song count"

		$mainframe->close() ;
	}

	function thumbnail(){
		$mainframe = JFactory::getApplication();
		include(JPATH_SITE.DS.'components'.DS.'com_muscol'.DS.'helpers'.DS.'image_new.php');
		$mainframe->close() ;
	}


	function search_albums(){
		parent::display();
	}

	function cancel()
	{
        $jinput = JFactory::getApplication()->input;

		$params =JComponentHelper::getParams( 'com_muscol' );
		$itemid = $params->get('itemid');
		if($itemid != "") $itemid = "&Itemid=" . $itemid;

		$msg = JText::_( 'OPERATION_CANCELLED' );

        $id = $jinput->get('id', 0, 'int');
        $type = $jinput->get('type', '', 'string');

		if($id) $link = JRoute::_('index.php?option=com_muscol&view='.$type.'&id='.$id . $itemid, false) ;
		else $link = JRoute::_('index.php?option=com_muscol&view=artists&layout=detailed' . $itemid, false) ;

		$this->setRedirect($link, $msg);
	}

	function search(){

		$mainframe = JFactory::getApplication();

		$model = $this->getModel('search');

		$jinput = $mainframe->input;
		$search = $jinput->get('search', '', 'string');

        $items = array();

		switch($search){
			case "albums":
			$items = $model->getAlbumsData();
			break;
			case "songs":
			$items = $model->getSongsData();
			break;
			case "artists":
			$items = $model->getArtistsData();
			break;
		}

		$this->sendJSONResponse($items);
	}

	function artist_albums(){

		$mainframe = JFactory::getApplication();
		$jinput = JFactory::getApplication()->input;
		$params = JComponentHelper::getParams( 'com_muscol' );

		$model = $this->getModel('artist');

		$id = $jinput->getInt('id') ;
		$limitstart = $jinput->getInt('limitstart') ;
		$limit = $jinput->getInt('limit') ;

		if($params->get('globalcache', 1)) {
			$cache_group = 'com_muscol-artist-albums' ;
			$cache = JFactory::getCache($cache_group);
			$cache->setCaching(true);
			$cache->setLifeTime($params->get('cachetime', 86400));

			$items = $cache->call( array( $model, 'getAlbumsData' ), $id, $limitstart, $limit);
		}
		else { //cache is off or user is logged in
			$items = $model->getAlbumsData();
		}

		echo json_encode($items) ;

		$mainframe->close();
	}

	function artist_songs(){

		$mainframe = JFactory::getApplication();
		$jinput = JFactory::getApplication()->input;
		$params = JComponentHelper::getParams( 'com_muscol' );

		$model = $this->getModel('songs');

		$id = $jinput->getInt('id') ;
		$limitstart = $jinput->getInt('limitstart') ;
		$limit = $jinput->getInt('limit') ;

		if($params->get('globalcache', 1)) {
			$cache_group = 'com_muscol-artist-songs' ;
			$cache = JFactory::getCache($cache_group);
			$cache->setCaching(true);
			$cache->setLifeTime($params->get('cachetime', 86400));

			$items = $cache->call( array( $model, 'getSongsData' ), $id, $limitstart, $limit);
		}
		else { //cache is off or user is logged in
			$items = $model->getSongsData();
		}

		echo json_encode($items) ;

		$mainframe->close();
	}

	function get_album_songs(){

		$mainframe = JFactory::getApplication();
		$jinput = JFactory::getApplication()->input;
		$params = JComponentHelper::getParams( 'com_muscol' );

		$model = $this->getModel('album');

		$id = $jinput->getInt('id') ;

		if($params->get('globalcache', 1)) {

			$cache_group = 'com_muscol-album-songs' ;
			$cache = JFactory::getCache($cache_group);
			$cache->setCaching(true);
			$cache->setLifeTime($params->get('cachetime', 86400));

			$songs = $cache->call( array( $model, 'getSongs' ), $id);
		}
		else { //cache is off or user is logged in
			$songs = $model->getSongs();
		}

		echo json_encode($songs) ;

		$mainframe->close();
	}

	function get_playlist_songs(){

		$mainframe = JFactory::getApplication();
		$jinput = JFactory::getApplication()->input;
		$params = JComponentHelper::getParams( 'com_muscol' );

		$model = $this->getModel('playlist');

		$id = $jinput->getInt('id', '0', 'int') ;

		/*if($params->get('globalcache', 1)) {
			$cache = JFactory::getCache('com_muscol');
			$cache->setCaching(true);
			$cache->setLifeTime($params->get('cachetime', 86400));

			$playlist = $cache->call( array( $model, 'getPlaylistData' ));
			$songs = $cache->call( array( $model, 'getData' ));
		}
		else { //cache is off or user is logged in*/
			$playlist = $model->getPlaylistData();
			$songs = $model->getData();
		//}

		echo json_encode(array(
			'playlist' => $playlist,
			'songs' => $songs
		)) ;

		$mainframe->close();
	}

	function get_compilation_albums(){

		$mainframe = JFactory::getApplication();
		$jinput = JFactory::getApplication()->input;
		$params = JComponentHelper::getParams( 'com_muscol' );

		$model = $this->getModel('album');

		$id = $jinput->getInt('id') ;

		if($params->get('globalcache', 1)) {
			$cache_group = 'com_muscol-album-compilation' ;
			$cache = JFactory::getCache($cache_group);
			$cache->setCaching(true);
			$cache->setLifeTime($params->get('cachetime', 86400));

			$albums = $cache->call( array( $model, 'getCompilationAlbums' ), $id);
		}
		else { //cache is off or user is logged in
			$albums = $model->getCompilationAlbums();
		}

		echo json_encode($albums) ;

		$mainframe->close();
	}

	function get_chronology_albums(){

		$mainframe = JFactory::getApplication();
		$jinput = JFactory::getApplication()->input;
		$params = JComponentHelper::getParams( 'com_muscol' );

		$model = $this->getModel('album');

		$id = $jinput->getInt('id') ;

		if($params->get('globalcache', 1)) {
			$cache_group = 'com_muscol-album-chronology' ;
			$cache = JFactory::getCache($cache_group);
			$cache->setCaching(true);
			$cache->setLifeTime($params->get('cachetime', 86400));

			$albums = $cache->call( array( $model, 'getChronologyAlbums' ), $id);
		}
		else { //cache is off or user is logged in
			$albums = $model->getChronologyAlbums();
		}

		echo json_encode($albums) ;

		$mainframe->close();
	}

	function get_comments(){

		$mainframe = JFactory::getApplication();
		$jinput = JFactory::getApplication()->input;
		$params = JComponentHelper::getParams( 'com_muscol' );

		$model = $this->getModel('album');

		$id = $jinput->getInt('id') ;

		$comments = $model->getComments();

		echo json_encode($comments) ;

		$mainframe->close();
	}

	function artists(){

		$mainframe = JFactory::getApplication();
		$jinput = JFactory::getApplication()->input;
		$params = JComponentHelper::getParams( 'com_muscol' );

		$model = $this->getModel('artists');

		$letter = $jinput->getString('letter') ;
		$limitstart = $jinput->getInt('limitstart') ;
		$limit = $jinput->getInt('limit') ;

		if($params->get('globalcache', 1)) {
			$cache_group = 'com_muscol-artists' ;
			$cache = JFactory::getCache($cache_group);
			$cache->setCaching(true);
			$cache->setLifeTime($params->get('cachetime', 86400));

			$items = $cache->call( array( $model, 'getData' ), $letter, $limitstart, $limit);
		}
		else { //cache is off or user is logged in
			$items = $model->getData();
		}

		echo json_encode($items) ;

		$mainframe->close();
	}

	function searchtags() {
		$mainframe = JFactory::getApplication();

		$jinput = JFactory::getApplication()->input;
		$searchword = $jinput->get('searchword', '', 'STRING');

		$db = JFactory::getDbo();
		$query = $db->getQuery(true);

		$query->select($db->quoteName('tag_name'));
		$query->from($db->quoteName('#__muscol_tags'));
		$query->where($db->quoteName('tag_name') . ' LIKE '. $db->quote($db->escape('%'.$searchword.'%')));

		$db->setQuery($query);
		$results = $db->loadAssocList();

		if ($results == null) $results = array();

		echo json_encode($results);
		$mainframe->close();
	}

	/**
	 * Search user playlists
	 */
	function searchPlaylists() {
		$mainframe = JFactory::getApplication();

        $model = $this->getModel('playlists');
        $playlists = $model->searchPlaylists();

		echo json_encode($playlists);
		$mainframe->close();
	}

	function getPlaylists() {
		$mainframe = JFactory::getApplication();

		$model = $this->getModel('playlists');
		$playlists = $model->getData();

		echo json_encode($playlists);
		$mainframe->close();
	}

	/* for modules */

	function get_module_data(){

		$mainframe = JFactory::getApplication();
		$user = JFactory::getUser();

		$jinput = JFactory::getApplication()->input;
		$module_id = $jinput->getInt('module_id');

		$db = JFactory::getDbo();
		$query = 'SELECT * FROM #__modules WHERE id = '.$module_id;
		$db->setQuery($query);
		$thismodule = $db->loadObject();
		$thismoduleparams = $thismodule->params;

		$params = new JRegistry($thismoduleparams);

		if($params->get('cache')) {
			$cache = JFactory::getCache($thismodule->module);
			$items = $cache->call( array( 'ArtistsController', 'get_module_data_json' ), $thismodule );
		}

		else { //cache is off or user is logged in

			$items = $this->get_module_data_json($thismodule);
		}

		echo $items;

		$mainframe->close();
	}

	static function get_module_data_json($thismodule){

		if($thismodule->id){

			require_once (JPATH_SITE.DS.'modules'.DS.$thismodule->module.DS.'helper.php');

			$params = new JRegistry($thismodule->params);

			switch($thismodule->module){
				case "mod_muscol_albums":
					$return_json	= modMusColAlbumsHelper::getAlbums($params);
				break;
				case "mod_muscol_artists":
					$return_json	= modMusColArtistsHelper::getArtists($params);
				break;
				case "mod_muscol_songs":
					$return_json	= modMusColSongsHelper::getSongs($params);
				break;
			}

			return json_encode($return_json) ;

		}

		return "";
	}

	/* for showalbum plugin */
	function get_album_data(){

		$mainframe = JFactory::getApplication();
		$user = JFactory::getUser();

		$jinput = JFactory::getApplication()->input;
		$album_id = $jinput->getInt('album_id');

		$db = JFactory::getDbo();
		$query = 	' SELECT al.*,ar.artist_name,ar.letter,ge.genre_name, f.format_name '.
					' FROM #__muscol_albums as al '.
					' LEFT JOIN #__muscol_artists as ar ON ar.id = al.artist_id '.
					' LEFT JOIN #__muscol_format as f ON f.id = al.format_id '.
					' LEFT JOIN #__muscol_genres as ge ON ge.id = al.genre_id '.
					' WHERE al.id = '.$album_id ;
		$db->setQuery($query);
		$albums = $db->loadObjectList();

		$albums = MusColHelper::prepareAlbumsData($albums);

		$this->sendJSONResponse($albums);
	}

	function sendJSONResponse($object){

		$mainframe = JFactory::getApplication();

		header('Content-Type: application/json');

		echo json_encode($object);

		$mainframe->close();
	}

}