var currentDocID;
var currentDocName;

//
//  Document Tracking Methods

//  This method will call the CreateDocumentTracking method in Common.Master.cs
//  Insert a row in the DocumentTracking table and return the TrackingID of the
//  record.  The variable docID is set to this value
function TrackDocument(docName)
{
    var val = Common.CreateDocumentTracking(docName);
    currentDocID = val.value;
    
    var parts = docName.split("/");
    currentDocName = parts[parts.length - 1];
    
}

//
//  Ajax Methods
//

//  Ajax call to get the English version of the PDF document
function GetDisplayLabel()
{
    var result = Common.GetDocumentDisplayLabel(currentDocName);
    return result.value;
}    

//  Ajax call to get the path to the image of the PDF document
function GetPDFImage()
{
    var result = Common.GetDocumentImagePath(currentDocName);
    return result.value;
}

//
//  Thanks.html Methods
//

// This method checked to see if any of the checkboxes on the Thanks.html page 
//  are checked
function ThankYouChecked()
{
    var result = 1;
    if ((document.getElementById('contactNow').checked == false) && (document.getElementById('send').checked == false) && (document.getElementById('keep').checked == false))
        result = 0;
        
    return result;
}
       
      
//  This method will show/hide the data entry fields based on whether any of the 
//  checkboxes are checked.
function ShowHideDataEntry()
{
    var div = document.getElementById("dataentryfields");

    if (ThankYouChecked() == 0)
        div.style.display = "none";
    else
        div.style.display = "block";
}

//  Update the name of the whitepaper in the Thanks.html form
function UpdateWhitepaperNameInThankYou()
{
    var elem = document.getElementById("whitepapername");
    if (elem != null)
        elem.innerHTML = GetDisplayLabel();
}

//  This method will pull the correct PDF image on the Thanks.html page.
function UpdateWhitepaperImageInThankYou()
{
    var temp = new Array;
    var elem = document.getElementById("whitepaperimage");
    if (elem != null)
    {
        elem.src = GetPDFImage();
    }
}

//  This method is called from mf_lightbox.js after the Thanks.html file is
//  displayed
function UpdateThankYou()
{
    UpdateWhitepaperNameInThankYou();
    UpdateWhitepaperImageInThankYou();

    GetCookie("SO-Whitepapers");

    var email = document.getElementById("email");
	email.focus();
}

//
//  Validation and Cookie Methods
//

//  Validate submitted data
function ValidateSubmit()
{
    //document.validation.emailcheck.value
    var email = document.getElementById('email');
    var str = email.value;

    if (str.length > 0)
    {
        var name = document.getElementById("name").value;
        var phone = document.getElementById("phone").value;
        var company = document.getElementById("company").value;
        var comments = document.getElementById("comments").value;
        
        var contactImmediately = 0;
        if (document.getElementById('contactNow').checked == true)
            contactImmediately = 1
        
        var sendNotices = 0;
        if (document.getElementById('send').checked == true)
            sendNotices = 1;
            
        var newsAndUpdates = 0;
        if (document.getElementById('keep').checked == true)
            newsAndUpdates = 1;
            
        Common.UpdateDocumentTracking(currentDocID,email.value,name,phone,company,comments,contactImmediately,sendNotices,newsAndUpdates);
        CreateCookie(email.value, name, phone, company, contactImmediately, sendNotices, newsAndUpdates);
        Lightbox.hideBox();
    }
    else
    {
        alert("Please enter a valid email address.");
        email.focus();
    }
    
}

//  This method will create/override a cookie
function CreateCookie(email,name,phone,company,contactImmediately,sendNotices,newsAndUpdates)
{
    if (name.length == 0)
        name = " ";
    if (phone.length == 0)
        phone = " ";
    if (company.length == 0)
        company = " ";

    var cookie = "email:" + Base64.encode(email) + "," +
        "name:" + Base64.encode(name) + "," + "phone:" + Base64.encode(phone) + "," +
        "company:" + Base64.encode(company) + "," + "contact:" + contactImmediately + "," +
        "send:" + sendNotices + "," + "updates:" + newsAndUpdates;

	var expires = new Date();
    expires.setTime(expires.getTime() + 1000 * 60 * 60 * 24 * 365)
	
    document.cookie = "SO-Whitepapers=" + cookie + ";expires=" + expires + "; path=/";

}

//  This method is used to trim any extra spaces
function trim(stringToTrim) 
{
	return stringToTrim.replace(/^\s+|\s+$/g,"");
}

//  This method will retrieve the SO-Whitepapers cookie
function GetCookie(cookieName)
{
    var cookie = document.cookie;
    
    if (cookie.indexOf(cookieName) != -1)
    {
        var startpos = cookie.indexOf(cookieName)+cookieName.length+1;
        var endpos = cookie.indexOf(";", startpos) - 0;
        
        if (endpos == -1)
        {
            endpos = cookie.length;
        }            
        
        var ck = cookie.substring(startpos,endpos);
        var parts = ck.split(",");

        var temp = parts[0].split(":");
        var email = Base64.decode(temp[1]);

        var temp = parts[1].split(":");
        var name = Base64.decode(temp[1]);

        var temp = parts[2].split(":");
        var phone = Base64.decode(temp[1]);

        var temp = parts[3].split(":");
        var company = Base64.decode(temp[1]);
        
        var temp = parts[4].split(":");
        var contact = temp[1];
        
        var temp = parts[5].split(":");
        var send = temp[1];
        
        var temp = parts[6].split(":");
        var updates = temp[1];

        document.getElementById("email").value = trim(email);
        document.getElementById("name").value = trim(name);
        document.getElementById("phone").value = trim(phone);
        document.getElementById("company").value = trim(company);
        
        if (contact == 1)
            document.getElementById("contactNow").checked = true;
        else
            document.getElementById("contactNow").checked = false;
        if (send == 1)
            document.getElementById("send").checked = true;
        if (updates == 1)
            document.getElementById("keep").checked = true;
    
    }

}

//  This class is used to do Base64 encoding/decoding of the cookie.  This
//  is necessary because the values we may store in the cookie are special 
//  characters or could be mistaken as name/value seperators.
var Base64 = {

    // private property
    _keyStr : "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",

    // public method for encoding
    encode : function (input) {
        var output = "";
        var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
        var i = 0;

        input = Base64._utf8_encode(input);

        while (i < input.length) {

            chr1 = input.charCodeAt(i++);
            chr2 = input.charCodeAt(i++);
            chr3 = input.charCodeAt(i++);

            enc1 = chr1 >> 2;
            enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
            enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
            enc4 = chr3 & 63;

            if (isNaN(chr2)) {
                enc3 = enc4 = 64;
            } else if (isNaN(chr3)) {
                enc4 = 64;
            }

            output = output +
            this._keyStr.charAt(enc1) + this._keyStr.charAt(enc2) +
            this._keyStr.charAt(enc3) + this._keyStr.charAt(enc4);

        }

        return output;
    },

    // public method for decoding
    decode : function (input) {
        var output = "";
        var chr1, chr2, chr3;
        var enc1, enc2, enc3, enc4;
        var i = 0;

        input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");

        while (i < input.length) {

            enc1 = this._keyStr.indexOf(input.charAt(i++));
            enc2 = this._keyStr.indexOf(input.charAt(i++));
            enc3 = this._keyStr.indexOf(input.charAt(i++));
            enc4 = this._keyStr.indexOf(input.charAt(i++));

            chr1 = (enc1 << 2) | (enc2 >> 4);
            chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
            chr3 = ((enc3 & 3) << 6) | enc4;

            output = output + String.fromCharCode(chr1);

            if (enc3 != 64) {
                output = output + String.fromCharCode(chr2);
            }
            if (enc4 != 64) {
                output = output + String.fromCharCode(chr3);
            }

        }

        output = Base64._utf8_decode(output);

        return output;

    },

    // private method for UTF-8 encoding
    _utf8_encode : function (string) {
        string = string.replace(/\r\n/g,"\n");
        var utftext = "";

        for (var n = 0; n < string.length; n++) {

            var c = string.charCodeAt(n);

            if (c < 128) {
                utftext += String.fromCharCode(c);
            }
            else if((c > 127) && (c < 2048)) {
                utftext += String.fromCharCode((c >> 6) | 192);
                utftext += String.fromCharCode((c & 63) | 128);
            }
            else {
                utftext += String.fromCharCode((c >> 12) | 224);
                utftext += String.fromCharCode(((c >> 6) & 63) | 128);
                utftext += String.fromCharCode((c & 63) | 128);
            }

        }

        return utftext;
    },

    // private method for UTF-8 decoding
    _utf8_decode : function (utftext) {
        var string = "";
        var i = 0;
        var c = c1 = c2 = 0;

        while ( i < utftext.length ) {

            c = utftext.charCodeAt(i);

            if (c < 128) {
                string += String.fromCharCode(c);
                i++;
            }
            else if((c > 191) && (c < 224)) {
                c2 = utftext.charCodeAt(i+1);
                string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
                i += 2;
            }
            else {
                c2 = utftext.charCodeAt(i+1);
                c3 = utftext.charCodeAt(i+2);
                string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
                i += 3;
            }

        }

        return string;
    }

}