/**
 * @preserve This file is part of Mibew Messenger project.
 * http://mibew.org
 * 
 * Copyright (c) 2005-2011 Mibew Messenger Community
 * License: http://mibew.org/license.php
 */

(function(Mibew, $){

    /**
     * @namespace Holds utility functions
     */
    Mibew.Utils = {};

    /**
     * Cast first character of a string to upper case
     * @param {String} str Input string
     * @returns {String} Result string
     */
    Mibew.Utils.toUpperCaseFirst = function(str) {
        if (typeof str != 'string') {
            return false;
        }
        if (str === '') {
            return str;
        }
        return str.substring(0, 1).toUpperCase() + str.substring(1);
    }

    /**
     * Cast string in camel case to dash format.
     * For example, if input string is 'anInputString' the result string will be
     * 'an-input-string'
     * @param {String} str Input string
     * @returns {String} Result string
     */
    Mibew.Utils.toDashFormat = function(str) {
        if (typeof str != 'string') {
            return false;
        }
        var parts = str.match(/((?:[A-Z]?[a-z]+)|(?:[A-Z][a-z]*))/g);
        for(var i = 0; i < parts.length; i++) {
            parts[i] = parts[i].toLowerCase();
        }
        return parts.join('-');
    }

    /**
     * Check if email address valid or not
     * @param {String} email Address to check
     * @returns {Boolean} true if address is valid and false otherwise
     */
    Mibew.Utils.checkEmail = function(email) {
        return /^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/.test(email);
    }

    /**
     * Play .wav sound file
     * @param {String} file File path
     */
    Mibew.Utils.playSound = function (file) {
        var soundHTML = '<audio autoplay style="display: none;">' +
            '<source src="' + file + '" type="audio/x-wav" />' +
            '<embed src="' + file + '" type="audio/x-wav" hidden="true" autostart="true" loop="false" />' +
            '</audio>';
        $('body').append(soundHTML);
    }

})(Mibew, $);