// 
// There are 2 files that need to be updated to keep the calculator up to date:
// This file (PropCalc.js), and the file called PropCalc .  There are comments
// in both files describing exactly what needs to be changed.
// 
// NOTE - For the Town of Derry, there are only 2 variables in here that need to be updated.  Scroll
// down just a little and you will see 2 variables highlighted in RED.  These are the only 2 values that
// apply to how Derry is using this file.  The rest of the variables and code are not being used here
// and do not need to be updated at all.
//
// Be sure to adhere to the same format -- for totaltownvaluation simply change the value inside the
// quotes, and for taxrate all you need to do is replace the number that is there.  The semi-colons and
// quotes in these variable declarations are important - please do not remove them.   Thank  you.
//
//
//
// Important Note - something to watch when you're editing code in here -- the first thing the page does
// when its done loading is to populate all the constant values - tax rates, town valuation, and all the
// department numbers in the 3rd table.   If you've made an error in coding when editing stuff here, 
// there is a decent change it will affect the whole file, including the setupPage function.  So, after
// you've made your changes, saved this file, and refreshed your browser window, one huge hint that there
// is a coding error is if the page does not automatically fill in these values.
//
// Note -- Naming convention:  there will be a 1, 2, or 3 after (on in) the id name to indicate which table
// it belongs to.  For example, townrate2 is the field containing the town's tax rate value in table #2
//
// For the 3rd table, its a little more involved -- admin3total is the total Administration value for the 3rd
// table (this comes from the list below and populates the 2nd column in table #3), while admin3portion is 
// the taxpayer's portion of that total amount (this is the results of all the calculations we're doing here 
// and populates the fields in the 3rd column of table #3).  All the subcategories in the 3rd table are named 
// the same way.
// 
// Warning - if you're making changes to any of the calculations or other code - remember that this stuff is
// *very* picky and it *is* case sensitive with everything - variable names, function calls, etc.
//


// When the page has finished loading, run the setupPage function, which fills in the constant values
// from the list below.

window.onload = setupPage;


// 
// Define the page-wide rates here.  When they change for another year, all that needs to be 
// done is to adjust the values in the list just below here and the whole page will update 
// automatically.
// 

  var totaltownvaluation = "To Be Supplied"; // this is a string variable - we don't use it for any calculations
                                               // so its a quoted string because it looks better with the commas

//
// Try to *not* change any of the names of these variables - they're used in various places in the other functions
// and you'll need to be careful to change every reference to make a change work for you. 
// 

  var taxrate = 16.29;

  var countytaxrate = 3.46;
  var towntaxrate = 3.14;
  var schooltaxrate = 5.60;

  var Administration = 279873;
  var Selectmen = 15300;
  var TownManager = 54400;
  var ClerkTaxCollector = 77060;
  var CodeEnforcement = 52868;
  var HealthOfficer = 985;
  var GeneralAssistance = 21235;
  var Elections = 1785;
  var AppealsBoard = 1048;
  var PlanningBoard = 5036;
  var ServiceProviders = 13500;
  var Alarms = 3300;
  var AnimalControl = 5550;
  var Rescue = 52649;
  var DaytimeRescue = 6500;
  var Fire = 77790;
  var Dispatch = 11300;
  var SolidWaste = 134289;  
  var HazardousWaste = 11000;
  var RWSDebtService = 3800;
  var Roads = 281976;
  var SnowRemoval = 204524;
  var StreetLights = 10000;
  var TownHall = 21167;
  var TownOffice = 16005;
  var TownGarage = 19547;
  var VeteransMemorial = 2100;
  var SebagoCemetery = 1025;
  var AssociatedCemeteries = 600;
  var SmallCemeteries = 75;
  var SebagoDays = 5000;
  var MemorialDay = 500;
  var RecreationAdministration = 21310;
  var DouglasMountain = 3300;
  var TownBeach = 4950;
  var SYAABaseball = 4500;
  var Soccer = 500; 
  var Football = 500;
  var Basketball = 1500;
  var Library = 20000;
  var CIP = 329609;
  var CountyTax = 220517;
  var MSAD61 = 3232614;
  
  var TotalTownTax = 5231087;

//
// *** End of page-wide values ***
//


// 
// This function will take the number and clean it up so it looks like dollars and cents
// 
 function FixNum(num) 
{
    var z1 = (Math.round(num*100)/100) + "";    // round to the nearest hundredth and add "" to convert to string
    var locPeriod = z1.indexOf(".");            // find location of "." in the number

    if (locPeriod == -1)                        // If there is no ".", then its an integer
    {
       z1 = "$" + z1 + ".00";                   // so add the .00 at the end, and the "$" at the beginning
       return(z1);
    }
    else                                        // otherwise there is a "."
    {
      var Len1 = z1.length;                     // how long is the string?
      var locat = Len1 - 3;                     // what is the location of the character 3rd from the end
      var char1 = z1.charAt(locat);             // grab that character

      if (char1 != ".")                         // We already know its *not* an integer *and* its rounded to the
         z1 = z1 + "0";                         // nearest hundredth, so if the 3rd character from the end is not
      z1 = "$" + z1;                            // a ".", then there is only a single digit after the ".", such 
      return(z1);                               // as 52.7.  So add the extra "0" at the end to make it look right;
    }                                           // and put the "$" at the beginning
 }


// 
// This function gets called when the user clicks on the Calculate button.  It will call the calculateForm 
// function if the input is a valid number, otherwise it will give us a message box and reset the form.
//
function VerifyInput() 
{
   if (isNaN(property_calc.propvalue.value))
   {
     alert("   Please input a valid number\n(with no punctuation or commas)");
     resetForm();
   }
   else
   {
    calculateForm();
   }
}

//
// This setupPage function call will take the values from the variable list above and populate the
// page when it first loads.
// 
function setupPage() {
  document.getElementById("townvalue1").innerHTML = totaltownvaluation;
  property_calc.propvalue.value = "0";

  document.getElementById("rate1").innerHTML = FixNum(taxrate);

  document.getElementById("countyrate2").innerHTML = FixNum(countytaxrate);
  document.getElementById("townrate2").innerHTML = FixNum(towntaxrate);
  document.getElementById("schoolrate2").innerHTML = FixNum(schooltaxrate);
  document.getElementById("taxrate2").innerHTML = FixNum(taxrate);

  document.getElementById("propvalue3a").innerHTML = "0";
  document.getElementById("propvalue3b").innerHTML = "0";
  document.getElementById("propvalue3c").innerHTML = "0";

  document.getElementById("admin3total").innerHTML = "$" + Administration;
  document.getElementById("select3total").innerHTML = "$" + Selectmen;
  document.getElementById("manager3total").innerHTML = "$" + TownManager;
  document.getElementById("clerk3total").innerHTML = "$" + ClerkTaxCollector;
  document.getElementById("code3total").innerHTML = "$" + CodeEnforcement;
  document.getElementById("health3total").innerHTML = "$" + HealthOfficer;
  document.getElementById("general3total").innerHTML = "$" + GeneralAssistance;
  document.getElementById("election3total").innerHTML = "$" + Elections;
  document.getElementById("appeals3total").innerHTML = "$" + AppealsBoard;
  document.getElementById("planning3total").innerHTML = "$" + PlanningBoard;
  document.getElementById("service3total").innerHTML = "$" + ServiceProviders;
  document.getElementById("alarms3total").innerHTML = "$" + Alarms;
  document.getElementById("animal3total").innerHTML = "$" + AnimalControl;
  document.getElementById("rescue3total").innerHTML = "$" + Rescue;
  document.getElementById("day3total").innerHTML = "$" + DaytimeRescue;
  document.getElementById("fire3total").innerHTML = "$" + Fire;
  document.getElementById("dispatch3total").innerHTML = "$" + Dispatch;
  document.getElementById("solid3total").innerHTML = "$" + SolidWaste;
  document.getElementById("hazard3total").innerHTML = "$" + HazardousWaste;
  document.getElementById("debt3total").innerHTML = "$" + RWSDebtService;
  document.getElementById("roads3total").innerHTML = "$" + Roads;
  document.getElementById("snow3total").innerHTML = "$" + SnowRemoval;
  document.getElementById("lights3total").innerHTML = "$" + StreetLights;
  document.getElementById("townhall3total").innerHTML = "$" + TownHall;
  document.getElementById("townoffice3total").innerHTML = "$" + TownOffice;
  document.getElementById("garage3total").innerHTML = "$" + TownGarage;
  document.getElementById("veteran3total").innerHTML = "$" + VeteransMemorial;
  document.getElementById("scemetery3total").innerHTML = "$" + SebagoCemetery;
  document.getElementById("acemetery3total").innerHTML = "$" + AssociatedCemeteries;
  document.getElementById("smcemetery3total").innerHTML = "$" + SmallCemeteries;
  document.getElementById("sdays3total").innerHTML = "$" + SebagoDays;
  document.getElementById("memorial3total").innerHTML = "$" + MemorialDay;
  document.getElementById("recadm3total").innerHTML = "$" + RecreationAdministration;
  document.getElementById("douglas3total").innerHTML = "$" + DouglasMountain;
  document.getElementById("beach3total").innerHTML = "$" + TownBeach;
  document.getElementById("baseball3total").innerHTML = "$" + SYAABaseball;
  document.getElementById("soccer3total").innerHTML = "$" + Soccer;
  document.getElementById("football3total").innerHTML = "$" + Football;
  document.getElementById("basketball3total").innerHTML = "$" + Basketball;
  document.getElementById("library3total").innerHTML = "$" + Library;
  document.getElementById("cip3total").innerHTML = "$" + CIP;
  document.getElementById("countytax3total").innerHTML = "$" + CountyTax;
  document.getElementById("msad3total").innerHTML = "$" + MSAD61;

  document.getElementById("totaltowntax3").innerHTML = "$" + TotalTownTax;
}


//
// resetForm will do what it says -- anything we calculated previously (or might have) will be set 
// back to zero.  This will work whether we filled in anything before or not.
//
function resetForm() {
   property_calc.propvalue.value = "0";
   document.getElementById("totalbill1").innerHTML = "0";

   document.getElementById("countytax2").innerHTML = "0";
   document.getElementById("towntax2").innerHTML = "0";
   document.getElementById("schooltax2").innerHTML = "0";
   document.getElementById("totalbill2").innerHTML = "0";

   document.getElementById("countytax3").innerHTML = "0";
   document.getElementById("schooltax3").innerHTML = "0";
   document.getElementById("propvalue3a").innerHTML = "0";
   document.getElementById("propvalue3b").innerHTML = "0";
   document.getElementById("propvalue3c").innerHTML = "0";
 
   document.getElementById("admin3portion").innerHTML = "0";
   document.getElementById("select3portion").innerHTML = "0";
   document.getElementById("manager3portion").innerHTML = "0";
   document.getElementById("clerk3portion").innerHTML = "0";
   document.getElementById("code3portion").innerHTML = "0";
   document.getElementById("health3portion").innerHTML = "0";
   document.getElementById("general3portion").innerHTML = "0";
   document.getElementById("election3portion").innerHTML = "0";
   document.getElementById("appeals3portion").innerHTML = "0";
   document.getElementById("planning3portion").innerHTML = "0";
   document.getElementById("service3portion").innerHTML = "0";
   document.getElementById("alarms3portion").innerHTML = "0";
   document.getElementById("animal3portion").innerHTML = "0";
   document.getElementById("rescue3portion").innerHTML = "0";
   document.getElementById("day3portion").innerHTML = "0";
   document.getElementById("fire3portion").innerHTML = "0";
   document.getElementById("dispatch3portion").innerHTML = "0";
   document.getElementById("solid3portion").innerHTML = "0";
   document.getElementById("hazard3portion").innerHTML = "0";
   document.getElementById("debt3portion").innerHTML = "0";
   document.getElementById("roads3portion").innerHTML = "0";
   document.getElementById("snow3portion").innerHTML = "0";
   document.getElementById("lights3portion").innerHTML = "0";
   document.getElementById("townhall3portion").innerHTML = "0";
   document.getElementById("townoffice3portion").innerHTML = "0";
   document.getElementById("garage3portion").innerHTML = "0";
   document.getElementById("veteran3portion").innerHTML = "0";
   document.getElementById("scemetery3portion").innerHTML = "0";
   document.getElementById("acemetery3portion").innerHTML = "0";
   document.getElementById("smcemetery3portion").innerHTML = "0";
   document.getElementById("sdays3portion").innerHTML = "0";
   document.getElementById("memorial3portion").innerHTML = "0";
   document.getElementById("recadm3portion").innerHTML = "0";
   document.getElementById("douglas3portion").innerHTML = "0";
   document.getElementById("beach3portion").innerHTML = "0";
   document.getElementById("baseball3portion").innerHTML = "0";
   document.getElementById("soccer3portion").innerHTML = "0";
   document.getElementById("football3portion").innerHTML = "0";
   document.getElementById("basketball3portion").innerHTML = "0";
   document.getElementById("library3portion").innerHTML = "0";
   document.getElementById("cip3portion").innerHTML = "0";
   document.getElementById("countytax3portion").innerHTML = "0";
   document.getElementById("msad3portion").innerHTML = "0";
 
   document.getElementById("towntax3").innerHTML = "0";
   document.getElementById("totalbill3").innerHTML = "0";
}


//
// calculateForm will do the math for all the values we've set up previously. 
//
function calculateForm() {
   document.getElementById("totalbill1").innerHTML = FixNum( ((taxrate * property_calc.propvalue.value) / 1000) + ((property_calc.propvalue.value - 100000) * (taxrate / 1000) * .02 ) );

   document.getElementById("countytax2").innerHTML = FixNum((countytaxrate * property_calc.propvalue.value) / 1000);
   document.getElementById("towntax2").innerHTML = FixNum((towntaxrate * property_calc.propvalue.value) / 1000);
   document.getElementById("schooltax2").innerHTML = FixNum((schooltaxrate * property_calc.propvalue.value) / 1000);
   document.getElementById("totalbill2").innerHTML = FixNum((taxrate * property_calc.propvalue.value) / 1000);

   document.getElementById("countytax3").innerHTML = FixNum((countytaxrate * property_calc.propvalue.value) / 1000);
   document.getElementById("schooltax3").innerHTML = FixNum((schooltaxrate * property_calc.propvalue.value) / 1000);

   document.getElementById("propvalue3a").innerHTML = "$" + property_calc.propvalue.value;
   document.getElementById("propvalue3b").innerHTML = "$" + property_calc.propvalue.value;
   document.getElementById("propvalue3c").innerHTML = "$" + property_calc.propvalue.value;

   var townPercentage = ((property_calc.propvalue.value * towntaxrate)/1000);

   document.getElementById("admin3portion").innerHTML = FixNum((Administration/TotalTownTax)*townPercentage);
   document.getElementById("select3portion").innerHTML = FixNum((Selectmen/TotalTownTax)*townPercentage);
   document.getElementById("manager3portion").innerHTML = FixNum((TownManager/TotalTownTax)*townPercentage);
   document.getElementById("clerk3portion").innerHTML = FixNum((ClerkTaxCollector/TotalTownTax)*townPercentage);
   document.getElementById("code3portion").innerHTML = FixNum((CodeEnforcement/TotalTownTax)*townPercentage);
   document.getElementById("health3portion").innerHTML = FixNum((HealthOfficer/TotalTownTax)*townPercentage);
   document.getElementById("general3portion").innerHTML = FixNum((GeneralAssistance/TotalTownTax)*townPercentage);
   document.getElementById("election3portion").innerHTML = FixNum((Elections/TotalTownTax)*townPercentage);
   document.getElementById("appeals3portion").innerHTML = FixNum((AppealsBoard/TotalTownTax)*townPercentage);
   document.getElementById("planning3portion").innerHTML = FixNum((PlanningBoard/TotalTownTax)*townPercentage);
   document.getElementById("service3portion").innerHTML = FixNum((ServiceProviders/TotalTownTax)*townPercentage);
   document.getElementById("alarms3portion").innerHTML = FixNum((Alarms/TotalTownTax)*townPercentage);
   document.getElementById("animal3portion").innerHTML = FixNum((AnimalControl/TotalTownTax)*townPercentage);
   document.getElementById("rescue3portion").innerHTML = FixNum((Rescue/TotalTownTax)*townPercentage);
   document.getElementById("day3portion").innerHTML = FixNum((DaytimeRescue/TotalTownTax)*townPercentage);
   document.getElementById("fire3portion").innerHTML = FixNum((Fire/TotalTownTax)*townPercentage);
   document.getElementById("dispatch3portion").innerHTML = FixNum((Dispatch/TotalTownTax)*townPercentage);
   document.getElementById("solid3portion").innerHTML = FixNum((SolidWaste/TotalTownTax)*townPercentage);
   document.getElementById("hazard3portion").innerHTML = FixNum((HazardousWaste/TotalTownTax)*townPercentage);
   document.getElementById("debt3portion").innerHTML = FixNum((RWSDebtService/TotalTownTax)*townPercentage);
   document.getElementById("roads3portion").innerHTML = FixNum((Roads/TotalTownTax)*townPercentage);
   document.getElementById("snow3portion").innerHTML = FixNum((SnowRemoval/TotalTownTax)*townPercentage);
   document.getElementById("lights3portion").innerHTML = FixNum((StreetLights/TotalTownTax)*townPercentage);
   document.getElementById("townhall3portion").innerHTML = FixNum((TownHall/TotalTownTax)*townPercentage);
   document.getElementById("townoffice3portion").innerHTML = FixNum((TownOffice/TotalTownTax)*townPercentage);
   document.getElementById("garage3portion").innerHTML = FixNum((TownGarage/TotalTownTax)*townPercentage);
   document.getElementById("veteran3portion").innerHTML = FixNum((VeteransMemorial/TotalTownTax)*townPercentage);
   document.getElementById("scemetery3portion").innerHTML = FixNum((SebagoCemetery/TotalTownTax)*townPercentage);
   document.getElementById("acemetery3portion").innerHTML = FixNum((AssociatedCemeteries/TotalTownTax)*townPercentage);
   document.getElementById("smcemetery3portion").innerHTML = FixNum((SmallCemeteries/TotalTownTax)*townPercentage);
   document.getElementById("sdays3portion").innerHTML = FixNum((SebagoDays/TotalTownTax)*townPercentage);
   document.getElementById("memorial3portion").innerHTML = FixNum((MemorialDay/TotalTownTax)*townPercentage);
   document.getElementById("recadm3portion").innerHTML = FixNum((RecreationAdministration/TotalTownTax)*townPercentage);
   document.getElementById("douglas3portion").innerHTML = FixNum((DouglasMountain/TotalTownTax)*townPercentage);
   document.getElementById("beach3portion").innerHTML = FixNum((TownBeach/TotalTownTax)*townPercentage);
   document.getElementById("baseball3portion").innerHTML = FixNum((SYAABaseball/TotalTownTax)*townPercentage);
   document.getElementById("soccer3portion").innerHTML = FixNum((Soccer/TotalTownTax)*townPercentage);
   document.getElementById("football3portion").innerHTML = FixNum((Football/TotalTownTax)*townPercentage);
   document.getElementById("basketball3portion").innerHTML = FixNum((Basketball/TotalTownTax)*townPercentage);
   document.getElementById("library3portion").innerHTML = FixNum((Library/TotalTownTax)*townPercentage);
   document.getElementById("cip3portion").innerHTML = FixNum((CIP/TotalTownTax)*townPercentage);
   document.getElementById("countytax3portion").innerHTML = FixNum((CountyTax/TotalTownTax)*townPercentage);
   document.getElementById("msad3portion").innerHTML = FixNum((MSAD61/TotalTownTax)*townPercentage);

   document.getElementById("towntax3").innerHTML = FixNum((towntaxrate * property_calc.propvalue.value) / 1000);
   document.getElementById("totalbill3").innerHTML = FixNum((taxrate * property_calc.propvalue.value) / 1000);
}