//How much can I borrow Calculator

//Variables

// Current Loan
var loan_min = 25000;
var loan_max = 900000;
var loan_initial = 100000;
var current_loan_value = loan_initial;
var loanValues = null;

// Term
var term_min = 5;
var term_max = 45;
var term_initial = 25;
var current_term_value = term_initial;
var termValues = null;

//Current Rate
var rate_min = 0.25;
var rate_max = 10;
var rate_initial = 4.5;
var current_rate_value = rate_initial;
var rateValues = null;

//Overpayments
var shortfall_min = 1000;
var shortfall_max = 500000;
var shortfall_initial = 50000;
var current_shortfall_value = shortfall_initial;
var shortfallValues = null;




//Only call the function when you need to - on mouse up
var cancelAjax = true;


// Set Inital Values and create slider Arrays

function InitializeHowMuchCanIBorrowCalculator()
{   

    // loan slider values
    loanValues = CreateSliderValues(new Array(), loan_min, 25000, 1000);
    loanValues = CreateSliderValues(loanValues, 26000, loan_max, 1000);

    // rate  values
    rateValues = CreateRSliderValues(new Array(), rate_min, rate_max);
	
     // term slider values
    termValues = CreateSliderValues(new Array(), term_min, 5, 1);
    termValues = CreateSliderValues(termValues, 5, term_max, 1);
	
	  // shortfall slider values
    shortfallValues = CreateSliderValues(new Array(), shortfall_min, 100000, 1000);
    shortfallValues = CreateSliderValues(shortfallValues, 100000, shortfall_max, 5000);

    // loan slider
    $('#loanTrack').slider({
        min: 0,
        max: loanValues.length - 1,
        steps: loanValues.length,
        change: function(e, ui)
		
        {
            current_loan_value = loanValues[ui.value]; recalmpay=1;
            ShowResult();
        },
        slide: function(e, ui)
        {
            $('#loanTextInput').val(loanValues[ui.value]);
        }
    });

    // term slider
    $('#termTrack').slider({
        min: 0,
        max: termValues.length - 1,
		
        steps: termValues.length,
        change: function(e, ui)
        {
            current_term_value = termValues[ui.value]; recalmpay=1;
            ShowResult();
        },
        slide: function(e, ui)
        {
            $('#termTextInput').val(termValues[ui.value]);
        }
    });
	
	  
    
    // rate slider
    $('#rateTrack').slider({
        min: 0,
        max: rateValues.length - 1,
        steps: rateValues.length,
        change: function(e, ui)
        {
            current_rate_value = rateValues[ui.value]; recalmpay=1;
            ShowResult();
        },


        slide: function(e, ui)
        {
            $('#rateTextInput').val(rateValues[ui.value]);
        }
    });
	
	   // shortfall slider
    $('#shortfallTrack').slider({
        min: 0,
        max: shortfallValues.length - 1,
        steps: shortfallValues.length,
        change: function(e, ui)
        {
            current_shortfall_value = shortfallValues[ui.value]; 
            ShowResult();
        },


        slide: function(e, ui)
        {
            $('#shortfallTextInput').val(shortfallValues[ui.value]);
        }
    });
	

   
   
    $('#loanTextInput').change(function(eventArgs) { return handleKeyPress(eventArgs, loanValues, 'loanTrack'); });
    $('#loanTextInput').val(current_loan_value);
	
    $('#rateTextInput').change(function(eventArgs) { return handleKeyPress(eventArgs, rateValues, 'rateTrack'); });
    $('#rateTextInput').val(current_rate_value);
	
	$('#termTextInput').change(function(eventArgs) { return handleKeyPress(eventArgs, termValues, 'termTrack'); } );
    $('#termTextInput').val(current_term_value);
	
	$('#shortfallTextInput').change(function(eventArgs) { return handleKeyPress(eventArgs, shortfallValues, 'shortfallTrack'); } );
    $('#shortfallTextInput').val(current_shortfall_value);
	
    $('#loanTrack').slider("value", FindValueIndex(loanValues, current_loan_value));
	$('#termTrack').slider("value", FindValueIndex(termValues, current_term_value));
	$('#rateTrack').slider("value", FindValueIndex(rateValues, current_rate_value));
$('#shortfallTrack').slider("value", FindValueIndex(shortfallValues, current_shortfall_value));
    
	// setting this to false will trigget the ajax call
	cancelAjax = false;
    
}

function handleKeyPress(eventArgs, valuesArr, trackId)
{
//    if (eventArgs.keyCode == 13)
//    {
        var v = parseFloat($(eventArgs.target).val());

        // is it a number?
        if (isNaN(v))
        {
            alert('Sorry, the amount is invalid.');
            return false;
        }
        else
        {
            var sliderIdx = FindValueIndex(valuesArr, v);

            if (!isNaN(sliderIdx))
            {
                // cancel this ajax request - we'll call it later on
                cancelAjax = true;
                $('#' + trackId).slider("value", sliderIdx);
                cancelAjax = false;
            }
            else
            {
                alert('Please enter a value higher than ' + valuesArr[0] + ' and lower than ' + valuesArr[valuesArr.length - 1] + '.');
                return false;
            }
        }

        $(eventArgs.target).val(v);

       
		
		
        ShowResult(); // calling the ajax request here will send the correct "current" values
        //return false;
 
}

function ShowResult()
{

// don't keep doing it, honestly, everything will go crazy.  
    if (cancelAjax) { return; }    
	
function CalculateNewMonthlyAmount (Loan, Term, Rate, Shortfall){
	var RepaymentVal = calculaterepaymentpayment(Shortfall, Rate, Term)
	var IOnlyPayment = (Loan - Shortfall)*Rate/1200
	var TotalNewPayment = RepaymentVal + IOnlyPayment
	return TotalNewPayment
}


	//Define other key variables
	var Loan			=	document.getElementById("loanTextInput").value;
		Loan			=	parseFloat(Loan.replace(/[^0-9.]/g, ''));
	var Term			=	document.getElementById("termTextInput").value;
		Term 			=	parseFloat(Term.replace(/[^0-9.]/g, ''));
	var Rate			=	document.getElementById("rateTextInput").value;
		Rate			=	parseFloat(Rate.replace(/[^0-9.]/g, ''));
	var Shortfall		=	document.getElementById("shortfallTextInput").value;
		Shortfall		=	parseFloat(Shortfall.replace(/[^0-9.]/g, ''));
	Rate = Rate
	var CurPayment 		= Loan*(Rate)/1200
	
	
	var newAmount    	=  CalculateNewMonthlyAmount (Loan, Term, Rate, Shortfall)
	
	while (newAmount > CurPayment){
	Rate = Rate - 0.0001
	newAmount = CalculateNewMonthlyAmount (Loan, Term, Rate, Shortfall)
	}
	Rate = Math.round(Rate * 100);
	Rate = Rate/100



	document.getElementById("requiredrate").innerHTML = Rate
	

	document.getElementById('resultPane').style.display = "block";

window.location.hash="calchead"

}



$(document).ready(InitializeHowMuchCanIBorrowCalculator);