export let SizedImages = function( images ){

	var sizes = {
		small: false,
		medium: false,
		large: false,
		huge: false
	}

	if( images.length <= 0 ) return sizes;

	for( var i = 0; i < images.length; i++ ){

		// spotify-styled images
		if( images[i].height ){
			if( images[i].height > 800 ){
				sizes.huge = images[i].url;
			}else if( images[i].height > 600 ){
				sizes.large = images[i].url;
			}else if( images[i].height > 280 ){
				sizes.medium = images[i].url;
			}else{
				sizes.small = images[i].url;
			}

		// Mopidy-Images styled images
		}else if( typeof(images[i]) == 'string' ){
			sizes.small = images[i]
		}
	}

	if( !sizes.medium )	sizes.medium = sizes.small;
	if( !sizes.large ) sizes.large = sizes.medium;
	if( !sizes.huge ) sizes.huge = sizes.large;

	return sizes;
}

export let generateGuid = function(){
	return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
		var r = Math.random()*16|0, v = c == 'x' ? r : (r&0x3|0x8);
		return v.toString(16);
	});
}


export let getCurrentPusherConnection = function( connections, connectionid ){
	function isCurrentConnection(connection){
		return connection.connectionid == newProps.pusher.connectionid;
	}
	
	var currentConnection = newProps.pusher.connections.find(isCurrentConnection);
	if( !currentConnection ) return false;

	return currentConnection;
}




/**
 * Figure out a URI's source namespace
 * @param uri = string
 **/
export let uriSource = function( uri ){
    var exploded = uri.split(':');
    return exploded[0]
}



/**
 * Get an element from a URI
 * @param element = string, the element we wish to extract
 * @param uri = string
 **/
export let getFromUri = function( element, uri ){
    var exploded = uri.split(':');         

    if( exploded[0] == 'spotify' ){

	    if( element == 'userid' && exploded[1] == 'user' )
	        return exploded[2];             
	    if( element == 'playlistid' && exploded[3] == 'playlist' )
	        return exploded[4];
	    if( element == 'artistid' && exploded[1] == 'artist' )
	        return exploded[2];             
	    if( element == 'albumid' && exploded[1] == 'album' )
	        return exploded[2];             
	    if( element == 'trackid' && exploded[1] == 'track' )
	        return exploded[2];             
	    return null;

	}

	return null
}

/**
 * Identify what kind of asset a URI is (playlist, album, etc)
 * @param uri = string
 * @return string
 **/
export let uriType = function( uri ){
    var exploded = uri.split(':');

    if( exploded[0] == 'spotify' ){
    	switch( exploded[1] ){
    		case 'track':
    			return 'track'
    			break;
    		case 'artist':
    			return 'artist'
    			break;
    		case 'album':
    			return 'album'
    			break;
    		case 'user':
    			if( exploded[3] == 'playlist' ) return 'playlist'
    			if( exploded.length == 3 ) return 'user'
    			return null
    			break;
    	}
    }

    return null;
}