var UUID = require('uuid-js');

var uuid4 = UUID.create(); // Generate a V4 UUID

console.log( uuid4.toString() );
// Prints: 896b677f-fb14-11e0-b14d-d11ca798dbac

var uuid1 = UUID.create(1); // Generate a V1 TimeUUID
console.log( uuid1.toString() );

var today = new Date().getTime();
var last30days = (new Date().setDate( today.getDate() - 30 )).getTime();

var rangeStart = UUID.firstUUIDForTime( last30days );
var rangeEnd = UUID.lastUUIDForTime( today );

// Example using cassandra
var query = ...( "select first 50 reversed ?..? from user_twits where key=?", [ rangeStart, rangeEnd, "patricknegri" ]);

UUID.create(4); // Generate V4 UUID

UUID.create(1); // Generate V1 TimeUUID

UUID.fromTime( time, last ); // Generate a V1 empty TimeUUID from a Date object (Ex: new Date().getTime() )

UUID.firstUUIDForTime( time ); // Same as fromTime but first sequence

UUID.lastUUIDForTime( time ); // Same as fromTime but last sequence

UUID.fromURN( strId ); // Generate a UUID object from string

UUID.fromBytes( ints ); // Generate a UUID object from bytes

UUID.fromBinary( binary ); // Generate a UUID object from binary

aUUID.fromParts( timeLow, timeMid, timeHiAndVersion, clockSeqHiAndReserved, clockSeqLow, node );

aUUID.toString(); // hex string version of UUID

aUUID.toURN(); // same as hex, but with urn:uuid prefix

aUUID.toBytes(); // convert to bytes