//***************************************** back-end *******************************
/*LSS  = Lohnsteuersatz
BLP  = Bruttolistenpreis
LWA  = Wohn-Arbeits-Weg (Einfach)
Tags = Laufzeitfaktor in Monate
pVe  = Prozent Versteuerung Elektro/Hybrid
pWA  = Prozent Wohn-Arbeit
pVa  = Prozent Versteuerung Andere
GV5 = Kosten 0.5% Versteuerung
GV1 = Kosten 1% Versteuerung
GVFBe = Kosten Fahrtenbuch Elektrofahrzeug
GVFBa = Kosten Fahrtenbuch Andere
LGES = Jahres-Laufleistung
AB = Abschreibung
PE = Preis pro KWh
KEV = Verbrauch Elektro
PA = Anteil Privat-Kilometer
PV = Preis pro Liter
KVV = Verbrauch Verbrenner
TSFB = Zeiterparnis Fahrtenbuch
CA = CO2-Absorption Buche
BW1 = CO2-Äquivalent Elektro/Hybrid
BW2 = CO2-Äquivalent Benzin
BW3 = CO2-Äquivalent Diesel
BW4 = CO2-Äquivalent Autogas
BW5 = CO2-Äquivalent Erdgas

const pVe  = 0.005;
const pWA  = 0.0003;
const pVa  = 0.01;
const AB   = 0.15;
const pW   = 0.1296;
const t2   = 100;
const t1   = 3;
const BW1  = 0.52;
const BW2  = 2.33;
const BW3  = 2.64;
Const BW4  = 1.64;
const BW5  = 2.79;*/
var values = {};
var fueltype = 'diesel';
function updateCalculation() {
    (fueltype === 'electric') ?  electroVehicleClick() : otherVehicleClick();
}

//Berechnung mit geldwerten Vorteil bei Antriebsart = Elektro/Hybrid
function electroVehicleClick() {
    var LGES, KEV, PA, LSS, BLP, LWA;

    LSS  = values.range_tax_salary/100;
    BLP  = values.range_price;
    LWA  = values.range_distance;
    LGES = values.range_kilometers;
    KVV  = values.range_fuel_consumption;
    KKV  = 0.3;
    pPF = values.range_private_trips/100;

    var FK = BLP * 0.05;
    var RBLP = 15;
    var ABS = 12.445;
    var dAB = BLP * (1-RBLP * 0.01) * ABS * 0.01;

    var GVE = (BLP*0.005+BLP*0.015*0.01*LWA)*12
    var SLE = GVE*LSS

    var GSK  = 1/100*KKV*KVV*LGES;

    var VK = 177/14000
    var WK = 263/14000
    var RK = 171/14000
    var RGK = 250

    var IHK = (VK+WK+RK)*LGES+RGK;

    var GEFB = ((dAB +FK + IHK)* 0.5 + GSK)/LGES*(2*LWA*220+pPF*LGES);
    var SLEFB = GEFB*LSS;
    var RESE = SLE-SLEFB;
    if (!isNaN(RESE)) {
        RESE = RESE < 0 ? 0 : RESE;
        var output = document.getElementById("moneyResult");
        output.innerHTML = formatNumber(Math.ceil(RESE)) +' €';
    }
    calculateTime();
    co2EmissionElectro();
}

//Berechnung mit geldwerten Vorteil bei Antriebsart = Andere
function otherVehicleClick() {
    var LSS, BLP, LWA, LGES, KVV, pPF;
    var tags = 12;
    LSS  = values.range_tax_salary/100;
    BLP  = values.range_price;
    LWA  = values.range_distance;
    LGES = values.range_kilometers;
    KVV  = values.range_fuel_consumption;
    KKV  = values.range_price_fuel;
    pPF = values.range_private_trips/100;
    var FK = BLP * 0.05;
    var RBLP = 15;
    var ABS = 12.445;

    var GVV = (BLP*0.01+BLP*0.03*0.01*LWA)*tags
    var SLV = GVV * LSS;

    var dAB = BLP * (1-RBLP * 0.01) * ABS * 0.01

    var GKK = 1/100*KKV*KVV*LGES;

    var VK = 177/14000
    var WK = 263/14000
    var RK = 171/14000
    var RGK = 250
    var IHK = (VK+WK+RK)*LGES+RGK;

    var GVFB =(dAB+FK+GKK+IHK)/LGES*(2*LWA*220+pPF*LGES);
    var SLVFB = GVFB*LSS;

    var RESV = SLV-SLVFB;
    var output = document.getElementById("moneyResult");
    if (!isNaN(RESV)) {
        RESV = RESV < 0 ? 0 : RESV;
        output.innerHTML = formatNumber(Math.ceil(RESV)) + ' €';
    }
    calculateTime();
    co2EmissionOther();
}

function calculateTime() {
    var LGES = values.range_kilometers;
    var TSFB = (LGES/30)*70/3600;
    var output = document.getElementById("timeResult");
    if (!isNaN(TSFB)) {
     TSFB = TSFB < 0 ? 0 : TSFB;
     output.innerHTML = formatNumber(Math.round(TSFB)) +' h';
    }
}

//CO2-Emission und Bausparrechner
function co2EmissionElectro() {
    var LGES = values.range_kilometers;
    var KVV  = values.range_fuel_consumption;

    var CO2e = Math.floor(KVV)*Math.floor(LGES)*0.01*0.52;//BW1
    var n = Math.floor(CO2e/12.5);

    var output = document.getElementById("co2Result");
    var trees = document.getElementById("treeresult");
    if (!isNaN(n)) {
        n = n < 0 ? 0 : n;
        trees.innerHTML = formatNumber(Math.ceil(n));
        var tonne = parseFloat(CO2e / 1000);
        output.innerHTML = tonne.toFixed(2) + ' Tonnen';
    }

}

function co2EmissionOther() {
    var BWi;
    var LGES = values.range_kilometers;
    var KVV  = values.range_fuel_consumption;
    switch(fueltype) {
        case 'gasoline':
            BWi = 2.33;
            break;
        case 'diesel':
            BWi = 2.64;
            break;
        case 'autogas':
            BWi = 1.64;
            break;
        case 'erdgas':
            BWi = 2.79;
            break;
        case 'electric':
            BWi = 0.47;
            break;
    }

    var CO2a = (KVV*LGES/100*BWi);
    var n = Math.floor(CO2a/12.5);

    var output = document.getElementById("co2Result");
    var trees = document.getElementById("treeresult");

    if (!isNaN(n)) {
        n = n < 0 ? 0 : n;
        trees.innerHTML = Math.ceil(n);
        var tonne = parseFloat(CO2a / 1000);
        output.innerHTML = tonne.toFixed(2) + ' Tonnen';
    }
}

function formatNumber(num) {
    return num.toString().replace(/(\d)(?=(\d{3})+(?!\d))/g, '$1.')
}