var icApplicationUrl = "https://secure.logmeinrescue.com/";

var ICLoader = null;
// Default websessionID length
var webSessionIdLength = 24;

function RescueInstantChatLoader()
{
    var msp = null;
    var mspcounter = 0;
    var windtitle = "";
    var windblinkingvar = null;
    // Start InstantChat Preloader
    this.Start = function()
    {
        // Reload page with rescuewebsesisonid
        if (window.location.hash.length == webSessionIdLength + 1)
        {
            if ((window.location + "").indexOf("rescuewebsessionid") == -1)
            {
                var separator = "?";
                if (window.location.search.length != 0)
                    separator = "&";
                window.location = removeBookmark(window.location + "") + separator + "rescuewebsessionid=" + window.location.hash.replace("#", "");
                return;
            }
            else
            {
                window.location = (window.location + "").replace("rescuewebsessionid", "rescuewebsession2id");
                return;
            }
        }
        ICLoader = this;
        // Check the obligatory parameters
        if (checkParameter(ICLoader.ICContainer, "ICContainer", true))
            return;
        if (checkParameter(ICLoader.HostedCSS, "HostedCSS", false))
            return;
        ICLoader.ICContainerDiv = document.getElementById(ICLoader.ICContainer);
        // Check the obligatory attributes
        if (ICLoader.ICContainerDiv.style.width == "")
        {
            alert('*** ENGINE ERROR ***\n\nMissing "style.width": "' + ICLoader.ICContainer + '"');
            return;
        }
        if (ICLoader.ICContainerDiv.style.height == "")
        {
            alert('*** ENGINE ERROR ***\n\nMissing "style.height": "' + ICLoader.ICContainer + '"');
            return;
        }
        // Hosted Instant Chat or not
        // iPod Touch, or any other iPod
        // iPhone
        // iPad
        // Palm Pre or Palm device with webOS
        // Android
        if (!(IsHostedInstance() || (!IsHostedInstance() && !AmIiPodTouch() && !AmIiPhone() && !AmIiPad() && !AmIPalmPre() && !AmIAndroid())))
        {
            // Generate an empty viewport
            var meta = document.createElement("meta");
            meta.name = "viewport";
            meta.id = "viewport";
            // Disallow zooming + set default viewstate (for iPhone + iPod Touch)
            meta.content = "width=334; height=434; user-scalable=0;";
            // Set default container size (for iPhone + iPod Touch)
            ICLoader.ICContainerDiv.style.width = "334px";
            ICLoader.ICContainerDiv.style.height = "434px";
            // iPad
            if (AmIiPad())
            {
                ICLoader.ICContainerDiv.style.width = "538px"; // 70% of 768
                ICLoader.ICContainerDiv.style.height = "663px"; // (70% of 1024) - safari header height
                // Disallow zooming
                meta.content = "width=538; height=663; user-scalable=0;";
            }
            // Palm Pre or Palm device with webOS
            if (AmIPalmPre())
            {
                ICLoader.ICContainerDiv.style.width = "334px";
                ICLoader.ICContainerDiv.style.height = "480px";
                // Allow zooming
                meta.content = "width=334; height=480; user-scalable=yes;";
            }
            // Android
            if (AmIAndroid())
            {
                ICLoader.ICContainerDiv.style.width = "334px"; // Default ic size
                ICLoader.ICContainerDiv.style.height = "700px";
                // Allow zooming
                meta.content = "width=334; height=700; user-scalable=yes;";
            }
            // Apply viewstate
            document.getElementsByTagName("head").item(0).appendChild(meta);
        }
        if (ICLoader.PrivateCode != null)
            if (ICLoader.PrivateCode.length > 6)
            ICLoader.PrivateCode = ICLoader.PrivateCode.substring(0, 6);
        // Encode hasmark
        var encodedLocation = window.location + "";
        encodedLocation = encodedLocation.replace("#", "-h-a-s-m1-a2-r5-k7-");
        // Generate content
        var content = "<i" + "f" + "r" + "a" + "m" + "e id='ic_mainframe' src='" + icApplicationUrl + "InstantChat/HTMLEngine.aspx?";
        content += ((getParameter("rescuewebsessionid") != "") ? "rescuewebsessionid=" + encodeURIComponent2(getParameter("rescuewebsessionid")) + "&" : "");
        content += ((ICLoader.HostedCSS != null) ? "HostedCSS=" + encodeURIComponent2(ICLoader.HostedCSS) + "&" : "");
        content += ((ICLoader.HostedLanguagesForChatOnlyMode != null) ? "HostedLanguagesForChatOnlyMode=" + encodeURIComponent2(ICLoader.HostedLanguagesForChatOnlyMode) + "&" : "");
        content += ((ICLoader.HostedLanguagesForAppletMode != null) ? "HostedLanguagesForAppletMode=" + encodeURIComponent2(ICLoader.HostedLanguagesForAppletMode) + "&" : "");
        content += ((ICLoader.PageTitle != null) ? "PageTitle=" + encodeURIComponent2(ICLoader.PageTitle) + "&" : "");
        content += ((ICLoader.EntryID != null) ? "EntryID=" + encodeURIComponent2(ICLoader.EntryID) + "&" : "");
        content += ((ICLoader.PrivateCode != null) ? "PrivateCode=" + encodeURIComponent2(ICLoader.PrivateCode) + "&" : "");
        content += ((ICLoader.Name != null) ? "name=" + encodeURIComponent2(ICLoader.Name.replace(/\r/g, "").replace(/\n/g, " ")) + "&" : "");
        content += ((ICLoader.Comment1 != null) ? "comment1=" + encodeURIComponent2(ICLoader.Comment1.replace(/\r/g, "").replace(/\n/g, " ")) + "&" : "");
        content += ((ICLoader.Comment2 != null) ? "comment2=" + encodeURIComponent2(ICLoader.Comment2.replace(/\r/g, "").replace(/\n/g, " ")) + "&" : "");
        content += ((ICLoader.Comment3 != null) ? "comment3=" + encodeURIComponent2(ICLoader.Comment3.replace(/\r/g, "").replace(/\n/g, " ")) + "&" : "");
        content += ((ICLoader.Comment4 != null) ? "comment4=" + encodeURIComponent2(ICLoader.Comment4.replace(/\r/g, "").replace(/\n/g, " ")) + "&" : "");
        content += ((ICLoader.Comment5 != null) ? "comment5=" + encodeURIComponent2(ICLoader.Comment5.replace(/\r/g, "").replace(/\n/g, " ")) + "&" : "");
        content += ((ICLoader.Tracking0 != null) ? "tracking0=" + encodeURIComponent2(ICLoader.Tracking0) + "&" : "");
        content += ((ICLoader.Language != null) ? "language=" + encodeURIComponent2(ICLoader.Language) + "&" : "");
        content += ((encodedLocation.toLowerCase().indexOf("rescuedebug=1") != -1) ? "rescuedebug=1" : "");
        content += ((encodedLocation.toLowerCase().indexOf("rescuedebug=2") != -1) ? "rescuedebug=2" : "");
        content += "#" + encodedLocation;
        content += "' style='border: none; ";
        content += "width: " + getLiveProperty(ICLoader.ICContainerDiv, "width") + "; ";
        content += "height: " + getLiveProperty(ICLoader.ICContainerDiv, "height") + "; ";
        content += "margin: 0px' scrolling='no' frameborder='0' allowtransparency='true'></i" + "f" + "r" + "a" + "m" + "e>";
        // Start to communicate with Client Engine
        msp = setInterval(GetMessagesFromClientEngine, 1000);
        // Add content
        ICLoader.ICContainerDiv.innerHTML = content;
        ICLoader.ICMainFrame = document.getElementById("ic_mainframe");
    }
    
    // Set the position of main div
    this.centralizeGUI = function()
    {
        if (ICLoader != null)
        {
            // Hosted Instant Chat or not
            // iPod Touch, or any other iPod
            // iPhone
            // iPad
            // Palm Pre or Palm device with webOS
            // Android
            if (IsHostedInstance() || (!IsHostedInstance() && !AmIiPodTouch() && !AmIiPhone() && !AmIiPad() && !AmIPalmPre() && !AmIAndroid()))
            {
                if (!document.body.offsetWidth || document.body.offsetWidth == 0)
                {
                    if ((parseInt(window.innerWidth) + 20) > parseInt(getLiveProperty(ICLoader.ICContainerDiv, "width")))
                        ICLoader.ICMainFrame.style.width = parseInt(window.innerWidth) + 20 + "px";
                }
                else
                {
                    if ((parseInt(document.body.offsetWidth) + 20) > parseInt(getLiveProperty(ICLoader.ICContainerDiv, "width")))
                    {
                        if (navigator.userAgent.indexOf("MSIE 8") != -1 || navigator.userAgent.indexOf("MSIE 9") != -1)
                            ICLoader.ICMainFrame.style.width = parseInt(document.body.offsetWidth) + 16 + "px";
                        else
                            ICLoader.ICMainFrame.style.width = parseInt(document.body.offsetWidth) + 20 + "px";
                    }
                }
                if (document.documentElement.clientHeight)
                {
                    if (parseInt(document.documentElement.clientHeight) > parseInt(getLiveProperty(ICLoader.ICContainerDiv, "height")))
                        ICLoader.ICMainFrame.style.height = parseInt(document.documentElement.clientHeight) + "px";
                }
            }
        }
    }
    
    // Check the obligatory parameters
    function checkParameter(obj, name, type)
    {
        var returnValue = false;
        if (obj == null || !obj)
        {
            alert('*** ENGINE ERROR ***\n\nMissing object parameter: "' + name + '"');
            returnValue = true;
        }
        else
            if (type && !document.getElementById(obj))
            {
                alert('*** ENGINE ERROR ***\n\nMissing HTML element: "' + obj + '"');
                returnValue = true;
            }
        return returnValue;
    }
    
    // Return QueryString parameter
    function getParameter(name)
    {
        name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
        var regexS = "[\\?&]" + name + "=([^&#]*)";
        var regex = new RegExp(regexS);
        var results = regex.exec(window.location.href);
        if (results == null)
            return "";
        else
            return results[1];
    }

    // Get actual property of style attribute
    function getLiveProperty(oObject, sProperty)
    { 
        // 0px is the default value
        var sPropertyValue = "0px";
        if (oObject.currentStyle)
            sPropertyValue = oObject.currentStyle[sProperty];
        else if(window.getComputedStyle)
        {
            var oStyle = window.getComputedStyle(oObject, null);
            if (oStyle != null)
                sPropertyValue = oStyle.getPropertyValue(sProperty);
        }
        // E.g.: the return value is auto, then returns 0px, only for IE sessions
        if ((parseInt(sPropertyValue) + "").indexOf("NaN") != -1)
            sPropertyValue = "0px";
        return sPropertyValue;
    } 
    
    // Communicate with Client Engine
    function GetMessagesFromClientEngine()
    {
        mspcounter += 1;
        var tmpstr = window.location + "";
        if (tmpstr.indexOf("#") != -1)
        {
            clearInterval(msp);
            if (ICLoader.HostedErrorHandler != null)
            {
                if ((tmpstr.substring(tmpstr.indexOf("#") + 1).indexOf("-del") == -1) && (tmpstr.substring(tmpstr.indexOf("#") + 1).length != webSessionIdLength))
                {
                    ICLoader.HostedErrorHandler(tmpstr.substring(tmpstr.indexOf("#") + 1));
                    if (tmpstr.substring(tmpstr.indexOf("#") + 1).length != webSessionIdLength)
                        window.location = tmpstr + "-del";
                }
            }
        }
        if (mspcounter > 60)
            clearInterval(msp);
    }
    
    function encodeURIComponent2(inputstr)
    {
        var str = encodeURIComponent(inputstr);
        str = decodeText3(str, "%25", "%");
        str = decodeText3(str, "'", '"');
        return str;
    }

    // Remove bookmark
    function removeBookmark(url)
    {
        if (url.indexOf("#") != -1)
            return url.substring(0, url.indexOf("#"));
        else
            return url;
    }

    function decodeText3(text, first, second)
    {
        var stext = text;
        while (stext.indexOf(first) != -1)
        {
            stext = stext.replace(first, second);
        }
        return stext;
    }
    
    this.startBlinking = function(msgText)
    {
        if (windblinkingvar == null)
            windblinkingvar = setInterval(function() { document.title = ((document.title == msgText) ? windtitle : msgText); }, 300);
    }
    
    this.endBlinking = function()
    {
        if (windblinkingvar != null)
        {
            clearInterval(windblinkingvar);
            document.title = windtitle;
            windblinkingvar = null;
        }
    }
    
    this.setWindowTitle = function(docTitle)
    {
        document.title = docTitle;
        windtitle = docTitle;
    }
    
    // Hosted Instant Chat or not
    function IsHostedInstance()
    {
        // Under internal servers, e.g.: 3amlabs.net
        // Under Live servers, e.g.: LIVE, BETA, Enterprise, etc.
        if (IsUnderInternalServers(window.location + "") || IsUnderLiveServers(window.location + ""))
            // DEMO Instant Chat is a hosted instance under Rescue environment
            // Under Rescue Demo
            return IsUnderRescueDemo(window.location + "");
        else
            return true;
    }

    // Under internal servers, e.g.: 3amlabs.net
    function IsUnderInternalServers(sUrl)
    {
        if (sUrl.toLowerCase().indexOf("3amlabs.net") != -1)
            return true;
        else
            return false;
    }

    // Under Live servers, e.g.: LIVE, BETA, Enterprise, etc.
    function IsUnderLiveServers(sUrl)
    {
        if (sUrl.toLowerCase().indexOf("logmeinrescue") != -1)
            return true;
        else
            return false;
    }

    // Under Rescue Demo
    function IsUnderRescueDemo(sUrl)
    {
        if ((sUrl.toLowerCase().indexOf("instantchat/demo/default.aspx") != -1) || (sUrl.toLowerCase().indexOf("instantchat/salesdemo/default.aspx") != -1) || (sUrl.toLowerCase().indexOf("chatnow/default.aspx") != -1))
            return true;
        else
            return false;
    }

    // iPod Touch, or any other iPod
    function AmIiPodTouch()
    {
        // Get user agent string
        if (GetUserAgent().toLowerCase().indexOf("(ipod") != -1)
            return true;
        else
            return false;
    }

    // iPhone
    function AmIiPhone()
    {
        // Get user agent string
        if (GetUserAgent().toLowerCase().indexOf("(iphone") != -1)
            return true;
        else
            return false;
    }

    // iPad
    function AmIiPad()
    {
        // Get user agent string
        if (GetUserAgent().toLowerCase().indexOf("(ipad") != -1)
            return true;
        else
            return false;
    }

    // Android
    function AmIAndroid()
    {
        // Get user agent string
        if (GetUserAgent().toLowerCase().indexOf("android") != -1)
            return true;
        else
            return false;
    }

    // Palm Pre or Palm device with webOS
    function AmIPalmPre()
    {
        // Get user agent string
        if (GetUserAgent().toLowerCase().indexOf("webos") != -1 || GetUserAgent().toLowerCase().indexOf("hpwos") != -1)
            return true;
        else
            return false;
    }

    // Get user agent string
    function GetUserAgent()
    {
        if (navigator.userAgent)
            return navigator.userAgent;
        else
            return "";
    }
}