/* <copyright>
 This file contains proprietary software owned by Motorola Mobility, Inc.<br/>
 No rights, expressed or implied, whatsoever to this software are provided by Motorola Mobility, Inc. hereunder.<br/>
 (c) Copyright 2011 Motorola Mobility, Inc.  All Rights Reserved.
 </copyright> */
/* <notice>
 Code from node-uuid: https://github.com/broofa/node-uuid/raw/master/uuid.js<br/>
 MIT license https://github.com/broofa/node-uuid/blob/master/LICENSE.md<br/>
 </notice> */

/**
	@module montage/core/uuid
    @requires montage/core/core
*/
/**
    @class module:montage/core/uuid.Uuid
    @extends module:montage/core/core.Montage
 */
var CHARS = '0123456789ABCDEF'.split(''),
    FORMAT = 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.split(''),
    Uuid = exports.Uuid = Object.create(Object.prototype, /** @lends module:montage/core/uuid.Uuid# */ {
        /**
            Returns a univerally unique ID (UUID).
            @function
            @param {Property} argument
            @returns {String} The UUID.
        */
        generate: {
            enumerable: false,
            value: generate
        }
    });

exports.generate = generate;
function generate(argument) {
    var c = CHARS, id = FORMAT, r;

    id[0] = c[(r = Math.random() * 0x100000000) & 0xf];
    id[1] = c[(r >>>= 4) & 0xf];
    id[2] = c[(r >>>= 4) & 0xf];
    id[3] = c[(r >>>= 4) & 0xf];
    id[4] = c[(r >>>= 4) & 0xf];
    id[5] = c[(r >>>= 4) & 0xf];
    id[6] = c[(r >>>= 4) & 0xf];
    id[7] = c[(r >>>= 4) & 0xf];

    id[9] = c[(r = Math.random() * 0x100000000) & 0xf];
    id[10] = c[(r >>>= 4) & 0xf];
    id[11] = c[(r >>>= 4) & 0xf];
    id[12] = c[(r >>>= 4) & 0xf];
    id[15] = c[(r >>>= 4) & 0xf];
    id[16] = c[(r >>>= 4) & 0xf];
    id[17] = c[(r >>>= 4) & 0xf];

    id[19] = c[(r = Math.random() * 0x100000000) & 0x3 | 0x8];
    id[20] = c[(r >>>= 4) & 0xf];
    id[21] = c[(r >>>= 4) & 0xf];
    id[22] = c[(r >>>= 4) & 0xf];
    id[24] = c[(r >>>= 4) & 0xf];
    id[25] = c[(r >>>= 4) & 0xf];
    id[26] = c[(r >>>= 4) & 0xf];
    id[27] = c[(r >>>= 4) & 0xf];

    id[28] = c[(r = Math.random() * 0x100000000) & 0xf];
    id[29] = c[(r >>>= 4) & 0xf];
    id[30] = c[(r >>>= 4) & 0xf];
    id[31] = c[(r >>>= 4) & 0xf];
    id[32] = c[(r >>>= 4) & 0xf];
    id[33] = c[(r >>>= 4) & 0xf];
    id[34] = c[(r >>>= 4) & 0xf];
    id[35] = c[(r >>>= 4) & 0xf];

    return id.join('');
}