/*
 Copyright (C) 2012-2014 Hewlett-Packard Development Company, L.P.
 All Rights Reserved.

 The contents of this software are proprietary and confidential to the
 Hewlett-Packard Development Company, L.P.  No part of this program
 may be photocopied, reproduced, or translated into another
 programming language without prior written consent of the
 Hewlett-Packard Development Company, L.P.
 */

//== Declare globals from other files, for JSLint ==
/*global jQuery: false */

/**
 * Detect the browser and version.
 * Flags set for supported browsers[version] (and above):
 * chrome[23]
 * firefox[15]
 * msie[9]
 **/

(function ($) {
    'use strict';
    var SUPPORTED_BROWSERS = {
            CHROME: {
                name: 'Chrome',
                version: 23
            },
            FIREFOX: {
                name: 'Firefox',
                version: 15
            },
            MSIE: {
                name: 'MSIE',
                version: 9
            }
        };

    navigator.whoIs = (function() {

        /* Example of navigator.userAgent values:
         * Firefox: "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:34.0) Gecko/20100101 Firefox/34.0"
         * Chrome:  "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.95 Safari/537.36"
         * IE8:     "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; WOW64; Trident/4.0; GTB7.5; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.5.30729; .NET4.0C; OfficeLiveConnector.1.5; OfficeLivePatch.1.3; .NET CLR 3.0.30729; .NET4.0E)"
         * IE9:
         * IE10:    "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET CLR 1.0.3705; .NET CLR 1.1.4322; SLCC1; InfoPath.3; .NET4.0C; .NET4.0E)"
         * IE11: win7 enterprise    "Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.3; .NET4.0C; .NET4.0E; rv:11.0) like Gecko"
         *       win8               "Mozilla/5.0 (Windows NT 6.3; Trident/7.0; rv:11.0) like Gecko"
         * Note for IE 11: the "rv" part is not always reported by some touch devices
         * iceweasel: version 3.5.16 "Mozilla/5.0 (x11; u; Linux i686; en-US; rv1.9.1.16) Gecko/20111108 Iceweasel/3.5.16 (like Firefox/3.5.16)"
         */

        var ua = navigator.userAgent,
            tem,
            uaMatch = ua.match(/(opera|chrome|safari|firefox|msie|trident(?=\/))\/?\s*(\d+)/i) || [],
            browserInfo = {};

        var name = uaMatch[1],
            version = uaMatch[2];

        // MSIE is no longer reported with IE11. The version is retrieved from "rv:11"
        if (/trident/i.test(name)) {
            tem = /\brv[ :]+(\d+)/g.exec(ua) || [];

            name = 'MSIE';
            version = (tem[1] || '');
        }
        if (name === 'Chrome') {
            tem = ua.match(/\bOPR\/(\d+)/);
            if (tem) {
                name = 'Opera';
                version = tem[1];
            }
        }
        uaMatch = version ? [name, version]: [navigator.appName, navigator.appVersion, '-?'];

        tem = ua.match(/version\/(\d+)/i);
        if (tem) {
            uaMatch.splice(1, 1, tem[1]);
        }

        browserInfo.name = uaMatch[0];
        browserInfo.version = uaMatch[1];

        return browserInfo;
    }());

    // Causes the validation to fail in browser without a console
    //window.console.log('Detected browser: ' + navigator.whoIs.name + ' ' + navigator.whoIs.version + ')');


    function isSupported(browserInfo, supportedBrowser) {
        return browserInfo.name === supportedBrowser.name &&
            browserInfo.version >= supportedBrowser.version;
    }

    $.isSupportedBrowser = function () {

        if (isSupported(navigator.whoIs, SUPPORTED_BROWSERS.FIREFOX) ||
            isSupported(navigator.whoIs, SUPPORTED_BROWSERS.CHROME) ||
            isSupported(navigator.whoIs, SUPPORTED_BROWSERS.MSIE)) {

            return true;
        }

        return false;
    };

    $.verifySupportedBrowser = function ($container) {

        if (!$.isSupportedBrowser()) {
            $container.html(
                $('<div>').addClass('unsupported-browser-indicator').append(
                    $('<div>').addClass('unsupported-browser-img')
                )
            ).addClass('unsupported-browser');

            return false;
        }

        return true;
    };

}(jQuery));