/* *******************************************
// Copyright 2010, Anthony Hand
//
// LICENSE INFORMATION
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//        http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
// either express or implied. See the License for the specific
// language governing permissions and limitations under the License.
//
//
// ABOUT THIS PROJECT
//   Project Owner: Anthony Hand
//   Email: anthony.hand@gmail.com
//   Web Site: http://www.mobileesp.com
//   Source Files: http://code.google.com/p/mobileesp/
//  
//   Versions of this code are available for:
//      PHP, JavaScript, Java, and ASP.NET (C#)
//
//
// WARNING:
//   These JavaScript-based device detection features may ONLY work
//   for the newest generation of smartphones, such as the iPhone,
//   Android and Palm WebOS devices.
//   These device detection features may NOT work for older smartphones
//   which had poor support for JavaScript, including
//   older BlackBerry, PalmOS, and Windows Mobile devices.
//   Additionally, because JavaScript support is extremely poor among
//   'feature phones', these features may not work at all on such devices.
//   For better results, consider using a server-based version of this code,
//   such as Java, APS.NET, or PHP.
//
// *******************************************
*/

//Optional: Store values for quickly accessing same info multiple times.
//Stores whether the device is an iPhone or iPod Touch.
var isIphone = false;
//Stores whether is the iPhone tier of devices.
var isTierIphone = false;
//Stores whether the device can probably support Rich CSS, but JavaScript support is not assumed. (e.g., newer BlackBerry, Windows Mobile)
var isTierRichCss = false;
//Stores whether it is another mobile device, which cannot be assumed to support CSS or JS (eg, older BlackBerry, RAZR)
var isTierGenericMobile = false;

//Initialize some initial string variables we'll look for later.
var engineWebKit = "webkit";
var deviceAndroid = "android";
var deviceIphone = "iphone";
var deviceIpod = "ipod";

var deviceNuvifone = "nuvifone"; //Garmin Nuvifone

var deviceSymbian = "symbian";
var deviceS60 = "series60";
var deviceS70 = "series70";
var deviceS80 = "series80";
var deviceS90 = "series90";

var deviceWinMob = "windows ce";
var deviceWindows = "windows";
var deviceIeMob = "iemobile";
var enginePie = "wm5 pie";  //An old Windows Mobile

var deviceBB = "blackberry";
var vndRIM = "vnd.rim"; //Detectable when BB devices emulate IE or Firefox
var deviceBBStorm = "blackberry95"; //Storm 1 and 2
var deviceBBBold = "blackberry97"; //Bold
var deviceBBTour = "blackberry96"; //Tour
var deviceBBCurve = "blackberry89"; //Curve 2

var devicePalm = "palm";
var deviceWebOS = "webos"; //For Palm's new WebOS devices
var engineBlazer = "blazer"; //Old Palm browser
var engineXiino = "xiino";

//Initialize variables for mobile-specific content.
var vndwap = "vnd.wap";
var wml = "wml";

//Initialize variables for random devices and mobile browsers.
//Some of these may not support JavaScript
var deviceBrew = "brew";
var deviceDanger = "danger";
var deviceHiptop = "hiptop";
var devicePlaystation = "playstation";
var deviceNintendoDs = "nitro";
var deviceNintendo = "nintendo";
var deviceWii = "wii";
var deviceXbox = "xbox";
var deviceArchos = "archos";

var engineOpera = "opera"; //Popular browser
var engineNetfront = "netfront"; //Common embedded OS browser
var engineUpBrowser = "up.browser"; //common on some phones
var engineOpenWeb = "openweb"; //Transcoding by OpenWave server
var deviceMidp = "midp"; //a mobile Java technology
var uplink = "up.link";
var engineTelecaQ = 'teleca q'; //a modern feature phone browser

var devicePda = "pda";
var mini = "mini";  //Some mobile browsers put 'mini' in their names.
var mobile = "mobile"; //Some mobile browsers put 'mobile' in their user agent strings.
var mobi = "mobi"; //Some mobile browsers put 'mobi' in their user agent strings.

//Use Maemo, Tablet, and Linux to test for Nokia's Internet Tablets.
var maemo = "maemo";
var maemoTablet = "tablet";
var linux = "linux";
var qtembedded = "qt embedded"; //for Sony Mylo and others
var mylocom2 = "com2"; //for Sony Mylo also

//In some UserAgents, the only clue is the manufacturer.
var manuSonyEricsson = "sonyericsson";
var manuericsson = "ericsson";
var manuSamsung1 = "sec-sgh";
var manuSony = "sony";

//In some UserAgents, the only clue is the operator.
var svcDocomo = "docomo";
var svcKddi = "kddi";
var svcVodafone = "vodafone";


//Initialize our user agent string.
var uagent = navigator.userAgent.toLowerCase();


//**************************
// Detects if the current device is an iPhone.
function DetectIphone() {
    if (uagent.search(deviceIphone) > -1) {
        //The iPod touch says it's an iPhone! So let's disambiguate.
        if (uagent.search(deviceIpod) > -1)
            return false;
        else
            return true;
    }
    else
        return false;
}

//**************************
// Detects if the current device is an iPod Touch.
function DetectIpod() {
    if (uagent.search(deviceIpod) > -1)
        return true;
    else
        return false;
}

//**************************
// Detects if the current device is an iPhone or iPod Touch.
function DetectIphoneOrIpod() {
    //We repeat the searches here because some iPods
    //  may report themselves as an iPhone, which is ok.
    if (uagent.search(deviceIphone) > -1 ||
       uagent.search(deviceIpod) > -1)
        return true;
    else
        return false;
}

//**************************
// Detects if the current device is an Android OS-based device.
function DetectAndroid() {
    if (uagent.search(deviceAndroid) > -1)
        return true;
    else
        return false;
}


//**************************
// Detects if the current device is an Android OS-based device and
//   the browser is based on WebKit.
function DetectAndroidWebKit() {
    if (DetectAndroid() && DetectWebkit())
        return true;
    else
        return false;
}

//**************************
// Detects if the current browser is based on WebKit.
function DetectWebkit() {
    if (uagent.search(engineWebKit) > -1)
        return true;
    else
        return false;
}


//**************************
// Detects if the current browser is the Nokia S60 Open Source Browser.
function DetectS60OssBrowser() {
    if (DetectWebkit()) {
        if ((uagent.search(deviceS60) > -1 ||
          uagent.search(deviceSymbian) > -1))
            return true;
        else
            return false;
    }
    else
        return false;
}

//**************************
// Detects if the current device is any Symbian OS-based device,
//   including older S60, Series 70, Series 80, Series 90, and UIQ,
//   or other browsers running on these devices.
function DetectSymbianOS() {
    if (uagent.search(deviceSymbian) > -1 ||
       uagent.search(deviceS60) > -1 ||
       uagent.search(deviceS70) > -1 ||
       uagent.search(deviceS80) > -1 ||
       uagent.search(deviceS90) > -1)
        return true;
    else
        return false;
}

//**************************
// Detects if the current browser is a Windows Mobile device.
function DetectWindowsMobile() {
    //Most devices use 'Windows CE', but some report 'iemobile'
    //  and some older ones report as 'PIE' for Pocket IE.
    if (uagent.search(deviceWinMob) > -1 ||
       uagent.search(deviceIeMob) > -1 ||
       uagent.search(enginePie) > -1)
        return true;
    else
        return false;
}

//**************************
// Detects if the current browser is a BlackBerry of some sort.
function DetectBlackBerry() {
    if (uagent.search(deviceBB) > -1)
        return true;
    if (uagent.search(vndRIM) > -1)
        return true;
    else
        return false;
}

//**************************
// Detects if the current browser is a BlackBerry Touch
//    device, such as the Storm.
function DetectBlackBerryTouch() {
    if (uagent.search(deviceBBStorm) > -1)
        return true;
    else
        return false;
}

//**************************
// Detects if the current browser is a BlackBerry device AND
//    has a more capable recent browser.
//    Examples, Storm, Bold, Tour, Curve2
function DetectBlackBerryHigh() {
    if (DetectBlackBerry()) {
        if (DetectBlackBerryTouch() ||
        uagent.search(deviceBBBold) > -1 ||
        uagent.search(deviceBBTour) > -1 ||
        uagent.search(deviceBBCurve) > -1)
            return true;
        else
            return false;
    }
    else
        return false;
}

//**************************
// Detects if the current browser is a BlackBerry device AND
//    has an older, less capable browser.
//    Examples: Pearl, 8800, Curve1.
function DetectBlackBerryLow() {
    if (DetectBlackBerry()) {
        //Assume that if it's not in the High tier, then it's Low.
        if (DetectBlackBerryHigh())
            return false;
        else
            return true;
    }
    else
        return false;
}


//**************************
// Detects if the current browser is on a PalmOS device.
function DetectPalmOS() {
    //Most devices nowadays report as 'Palm',
    //  but some older ones reported as Blazer or Xiino.
    if (uagent.search(devicePalm) > -1 ||
       uagent.search(engineBlazer) > -1 ||
       uagent.search(engineXiino) > -1) {
        //Make sure it's not WebOS first
        if (DetectPalmWebOS())
            return false;
        else
            return true;
    }
    else
        return false;
}

//**************************
// Detects if the current browser is on a Palm device
//   running the new WebOS.
function DetectPalmWebOS() {
    if (uagent.search(deviceWebOS) > -1)
        return true;
    else
        return false;
}

//**************************
// Detects if the current browser is a
//   Garmin Nuvifone.
function DetectGarminNuvifone() {
    if (uagent.search(deviceNuvifone) > -1)
        return true;
    else
        return false;
}


//**************************
// Check to see whether the device is a 'smartphone'.
//   You might wish to send smartphones to a more capable web page
//   than a dumbed down WAP page.
function DetectSmartphone() {
    if (DetectIphoneOrIpod())
        return true;
    if (DetectS60OssBrowser())
        return true;
    if (DetectSymbianOS())
        return true;
    if (DetectWindowsMobile())
        return true;
    if (DetectAndroid())
        return true;
    if (DetectBlackBerry())
        return true;
    if (DetectPalmWebOS())
        return true;
    if (DetectPalmOS())
        return true;
    if (DetectGarminNuvifone())
        return true;

    //Otherwise, return false.
    return false;
};

//**************************
// Detects if the current device is an Archos media player/Internet tablet.
function DetectArchos() {
    if (uagent.search(deviceArchos) > -1)
        return true;
    else
        return false;
}

//**************************
// Detects whether the device is a Brew-powered device.
function DetectBrewDevice() {
    if (uagent.search(deviceBrew) > -1)
        return true;
    else
        return false;
}


//**************************
// Detects the Danger Hiptop device.
function DetectDangerHiptop() {
    if (uagent.search(deviceDanger) > -1 ||
       uagent.search(deviceHiptop))
        return true;
    else
        return false;
}

//**************************
// Detects if the current device is on one of
// the Maemo-based Nokia Internet Tablets.
function DetectMaemoTablet() {
    if (uagent.search(maemo) > -1)
        return true;
    //Must be Linux + Tablet, or else it could be something else.
    if (uagent.search(maemoTablet) > -1 &&
       uagent.search(linux))
        return true;
    else
        return false;
}

//**************************
// Detects if the current browser is a Sony Mylo device.
function DetectSonyMylo() {
    if (uagent.search(manuSony) > -1) {
        if (uagent.search(qtembedded) > -1 ||
         uagent.search(mylocom2) > -1)
            return true;
        else
            return false;
    }
    else
        return false;
}

//**************************
// Detects if the current browser is Opera Mobile or Mini.
function DetectOperaMobile() {
    if (uagent.search(engineOpera) > -1) {
        if (uagent.search(mini) > -1 ||
         uagent.search(mobi) > -1)
            return true;
        else
            return false;
    }
    else
        return false;
}

//**************************
// Detects if the current device is a Sony Playstation.
function DetectSonyPlaystation() {
    if (uagent.search(devicePlaystation))
        return true;
    else
        return false;
};

//**************************
// Detects if the current device is a Nintendo game device.
function DetectNintendo() {
    if (uagent.search(deviceNintendo) > -1 ||
        uagent.search(deviceWii) > -1 ||
        uagent.search(deviceNintendoDs) > -1)
        return true;
    else
        return false;
};

//**************************
// Detects if the current device is a Microsoft Xbox.
function DetectXbox() {
    if (uagent.search(deviceXbox))
        return true;
    else
        return false;
};

//**************************
// Detects if the current device is an Internet-capable game console.
function DetectGameConsole() {
    if (DetectSonyPlaystation())
        return true;
    if (DetectNintendo())
        return true;
    if (DetectXbox())
        return true;
    else
        return false;
};

//**************************
// Detects if the current device is a mobile device.
//  This method catches most of the popular modern devices.
function DetectMobileQuick() {
    //Most mobile browsing is done on smartphones
    if (DetectSmartphone())
        return true;

    if (uagent.search(deviceWap) > -1 ||
        uagent.search(deviceMidp) > -1 ||
        uagent.search(deviceWml) > -1 ||
        DetectBrewDevice())
        return true;

    if (DetectOperaMobile())
        return true;

    if (uagent.search(engineNetfront) > -1)
        return true;
    if (uagent.search(engineUpBrowser) > -1)
        return true;
    if (uagent.search(engineOpenWeb) > -1)
        return true;

    if (DetectDangerHiptop())
        return true;

    if (DetectMaemoTablet())
        return true;
    if (DetectArchos())
        return true;

    if (uagent.search(devicePda) > -1)
        return true;
    if (uagent.search(mobile) > -1)
        return true;

    return false;
};


//**************************
// Detects in a more comprehensive way if the current device is a mobile device.
function DetectMobileLong() {
    if (DetectMobileQuick())
        return true;
    if (DetectGameConsole())
        return true;
    if (DetectSonyMylo())
        return true;

    //Detect for certain very old devices with stupid useragent strings.
    if (uagent.search(manuSamsung1) > -1 ||
        uagent.search(manuSonyEricsson) > -1 ||
        uagent.search(manuericsson) > -1)
        return true;

    if (uagent.search(svcDocomo) > -1)
        return true;
    if (uagent.search(svcKddi) > -1)
        return true;
    if (uagent.search(svcVodafone) > -1)
        return true;


    return false;
};


//*****************************
// For Mobile Web Site Design
//*****************************

//**************************
// The quick way to detect for a tier of devices.
//   This method detects for devices which can
//   display iPhone-optimized web content.
//   Includes iPhone, iPod Touch, Android, WebOS, etc.
function DetectTierIphone() {
    if (DetectIphoneOrIpod())
        return true;
    if (DetectAndroid())
        return true;
    if (DetectAndroidWebKit())
        return true;
    if (DetectPalmWebOS())
        return true;
    if (DetectGarminNuvifone())
        return true;
    if (DetectMaemoTablet())
        return true;
    else
        return false;
};


//**************************
// The quick way to detect for a tier of devices.
//   This method detects for devices which are likely to be
//   capable of viewing CSS content optimized for the iPhone,
//   but may not necessarily support JavaScript.
//   Excludes all iPhone Tier devices.
function DetectTierRichCss() {
    if (DetectMobileQuick()) {
        if (DetectTierIphone())
            return false;

        //The following devices are explicitly ok.
        if (DetectWebkit())
            return true;
        if (DetectS60OssBrowser())
            return true;

        //Note: 'High' BlackBerry devices ONLY
        if (DetectBlackBerryHigh())
            return true;

        if (DetectWindowsMobile())
            return true;

        if (uagent.search(engineTelecaQ) > -1)
            return true;

        else
            return false;
    }
    else
        return false;
};

//**************************
// The quick way to detect for a tier of devices.
//   This method detects for all other types of phones,
//   but excludes the iPhone and RichCSS Tier devices.
// NOTE: This method probably won't work due to poor
//  support for JavaScript among other devices.
function DetectTierOtherPhones() {
    if (DetectMobileLong()) {
        //Exclude devices in the other 2 categories
        if (DetectTierIphone())
            return false;
        if (DetectTierRichCss())
            return false;

        //Otherwise, it's a YES
        else
            return true;
    }
    else
        return false;
};

/****** implementation ************/

Date.prototype.addHours = function(h) {
    this.setHours(this.getHours() + h);
    return this;
}

function getCookieValue(cookieName) {
    var exp = new RegExp(escape(cookieName) + "=([^;]+)");
    if (exp.test(document.cookie + ";")) {
        exp.exec(document.cookie + ";");
        return unescape(RegExp.$1);
    }
    else return false;
}

function cookieExists() {
    var myCookieName = "ShowNonMobileWebsite";
    if (getCookieValue(myCookieName))
        return true;
    else
        return false;
}

var referer = document.referrer;

if (referer.indexOf(mobileURL) > -1) {
    var expdate = new Date().addHours(1);
    document.cookie = "ShowNonMobileWebsite=true;" + expdate;
}

else
{ 
    if (cookieExists() == false) {

        if (DetectSmartphone()) {
            window.location = mobileURL;
        }
    }
}