// Requirements
//  Simulate day to day running of the factory
// Continously add machines/equipments as capacity grows
// Show financial breakdown

// global variables
const machineArray = [];
const PKO_PRICE = 340000;
const PKC_PRICE = 40000;
const PKSL_PRICE = 50000;

const pknToPkc1 = 0.58;
const pknToPko = 0.35
const pknToPksl = 0.07
const pkc1ToPko = 0.09;
const pkc1ToPkc2 = 0.86;
const pkc1ToPksl = 0.05

function Expeller(capacity, isFirstCrush) {
    this.cap = capacity;
    this.config = {};
    this.config.firstCrush = isFirstCrush;
}

Expeller.prototype.crush = function() {
    if(this.config.firstCrush) {
        return this.firstCrush();
    } else {
        return this.secondCrush();
    }
}

Expeller.prototype.firstCrush = function() {
    this.capHr = this.cap / 24;
    const output = {};

    output.pko = this.capHr * pknToPko;
    output.pkc1 = this.capHr * pknToPkc1;
    output.pksl = this.capHr * pknToPksl;

    return output;
}

Expeller.prototype.secondCrush = function() {
    this.capHr = (this.cap - 3) / 24;
    const output = {};

    output.pko = this.capHr * pkc1ToPko
    output.pkc2 = this.capHr * pkc1ToPkc2
    output.pksl = this.capHr * pkc1ToPksl

    return output;
}

Expeller.prototype.setConfig = function() {
    this.config.firstCrush = !this.config.firstCrush;
}

function Factory() {
    this.output = {};
}

Factory.prototype.configure = function(pknAmt, pkcAmt, shiftHr) {
    // take configuration object
    // apply it to the machine array

    this.input = {};
    this.input.pkn = pknAmt;
    this.input.pkc1 = pkcAmt;
}

Factory.prototype.runMachines = function() {
    machineArray.forEach(machine => {
        let machineOutput = machine.crush();
        this.output.pko += machineOutput.pko;
        this.output.pksl += machineOutput.pksl;
        this.output.pkc1  = machineOutput.pkc1 ? this.output.pkc1 + machineOutput.pkc1 : this.output.pkc1;
        this.output.pkc2 = machineOutput.pkc2 ? this.output.pkc2 + machineOutput.pkc2 : this.output.pkc2;
    });
}

Factory.prototype.runShift = function(shiftHr) {
    for(let i = 0; i < shiftHr; i++) {
        this.runMachines();
    }

    // end of day function
    // check to see if more pkn needs to be bought
    // check to see if sale should be made
    if(this.output.pko >= 10 || this.output.pkc2 >= 5 || this.output.pksl >= 5) this.makeSale;
    // check if machine can be bought
    if(this.profit > 5000000) this.makePurchase({'expeller': 3000000})
}

Factory.prototype.sellProduct = function(qty, product) {
    let sale = 0;
    switch (product) { // reformat string
        case 'PKO':
        case 'pko':
            sale = qty * PKO_PRICE;
            break;
        case 'PKC2':
        case 'pkc2':
            sale = qty * PKC_PRICE;
            break;
        case 'PKSL':
        case 'pksl':
            sale = qty * PKSL_PRICE;
            break;
        default:
            console.log('please enter a valid product');
    }
    return sale;
}

Factory.prototype.calcRevenue = function(saleConfig) {
    for (key in this.output) {
        if(saleConfig.hasOwnProperty(key) && this.output[key] >= saleConfig[key] ) {
            revenue += this.sellProduct(saleConfig[key], key);
        }
    }
    return revenue;
}

Factory.prototype.makeSale = function() {
    let config = {};
    config['pko'] = 10;
    config['pkc2'] = 5;
    config['pksl'] = 5;
    this.revenue = this.calcRevenue(config);
    this.profit = this.revenue - this.overallCost;
}

Factory.prototype.makePurchase = function(purchaseConfig) {
    if(this.profit > 1.5 * purchaseConfig['expeller']) {

        this.profit -= purchaseConfig['expeller'];
        let isFirstCrush = false;

        if(machineArray.length % 2 == 0) isFirstCrush = true;

        machineArray.push(new Expeller(15, isFirstCrush));
    }
}