using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class Commodities : MonoBehaviour {

    // Pricing of commodities
    float CrudeOilPriceRussia;
    float CrudeOilPriceNorway;

    float NaturalGasPriceRussia;
    float NaturalGasPriceSaudiArabia;

    float CornPriceUnitedStates;
    float CornPriceArgentina;

    float CoffeePriceBrazil;
    float CoffeePriceVietnam;

    float SugarPriceBrazil;
    float SugarPriceINdia;

    float SteelPriceUnitedStates;
    float SteelPriceChina;

    float IronPriceAustralia;
    float IronPriceSouthAfrica;

    // Supply of commodities
    float CrudeOilSupplyRussia;
    float CrudeOilSupplyNorway;

    float NaturalGasSupplyRussia;
    float NaturalGasSupplySaudiArabia;

    float CornSupplyUnitedStates;
    float CornSupplyArgentina;

    float CoffeeSupplyBrazil;
    float CoffeeSupplyVietnam;

    float SugarSupplyBrazil;
    float SugarSupplyIndia;

    float SteelSupplyUnitedStates;
    float SteelSupplyChina;

    float IronSupplyAustralia;
    float IronSupplySouthAfrica;

    // Daily supply deliveries
    public float DailyCrudeOilAmountRussia = 100000;
    public float DailyCrudeOilAmountNorway = 90000;

    public Text supply;

    // Use this for initialization
    void Start() {
        // Crude oil: Subject to change when adding saving system
        CrudeOilSupplyRussia = 40000000;
        CrudeOilSupplyNorway = 36000000;
        CrudeOilPriceRussia = 20.50f;
        CrudeOilPriceNorway = 22f;

        supply.text = "Supply: " + CrudeOilSupplyRussia.ToString("n2") + " price: $" + CrudeOilPriceRussia;

    }

    /*
     * Start of adding & decreasing crude oil supply
     * */
    public void AddCrudeOil(float amount) {
        CrudeOilSupplyRussia += amount;

        float fraction = amount / CrudeOilSupplyRussia;
        float increments = Mathf.Sign(fraction) * Mathf.Floor(Mathf.Abs(fraction) / 0.00125f); // the number of 0.125% changes on this day

        if (increments > 0) {
            CrudeOilPriceRussia *= Mathf.Pow(0.9994f, increments);
        } else if (increments < 0) {
            CrudeOilPriceRussia *= Mathf.Pow(1.001f, increments);
        }

        supply.text = "Supply: " + CrudeOilSupplyRussia.ToString("n2") + " price: " + CrudeOilPriceRussia;
    }

    public void DecreaseCrudeOil(float amount) {
        CrudeOilSupplyRussia -= amount;

        float fraction = amount / CrudeOilSupplyRussia;
        float increments = Mathf.Sign(fraction) * Mathf.Floor(Mathf.Abs(fraction) / 0.00125f); // the number of 0.125% changes on this day

        if (increments > 0) {
            CrudeOilPriceRussia *= Mathf.Pow(1.001f, increments);
        }
        else if (increments < 0) {
            CrudeOilPriceRussia *= Mathf.Pow(0.9994f, increments);
        }

        supply.text = "Supply: " + CrudeOilSupplyRussia.ToString("n2") + " price: " + CrudeOilPriceRussia;
    }

    /*
     * End of adding & decreasing crude oil supply
     * */
}