Foodprog

import java.util.LinkedList;
import java.util.Scanner;
import java.util.HashMap;
public class Food{
    public static void main(String[] args){
        String[] nutrients = {"Carbs", "Protein", "Fat", "Vitamin A(%)", "Vitamin C(%)", "Vitamin E(%)", "Vitamin K(%)", "Iron(%)", "Magnesium(%)", "Zinc(%)", "Calcium(%)", "Potassium(%)", "Calories"};
        Double[] foodssum = new Double[13];
        setFoodSumZero(foodssum);
        HashMap<String, Double[]> map = new HashMap<String, Double[]>();
        createAndSetupData(map);

        System.out.println("Welcome to Paul's Food Nutrient Track");
        System.out.print("Foods avaiable: ");
        getFoods(map);
        System.out.print("Type the exact food name to add the food. Type \"done\" to conclude \nFood:");


        Scanner in = new Scanner(System.in);
        String n;
        while(!((n = in.next()).equals("done"))){
            try{
                if(!map.containsKey(n)) throw new MyException("Food isn't supported");
                Double[] selected = map.get(n);
                System.out.println("Amount in grams?");
                int g;
                do{
                    g = in.nextInt();
                    if(g<=0) System.out.println("Please don't enter negative numbers or zero. Try again");
                    else setupGrams(selected, g);
                } while(g<=0);
                for(int i = 0; i<selected.length;i++){
                    foodssum[i] = foodssum[i] + selected[i];
                }
            } catch (Exception e){
                System.out.println("Error:" + e);
            }
            System.out.print("Next food:");
        }
        printSumNutri(foodssum, nutrients);
    }
                        //carbs protei fat  vitA vitC   vitE  vitK iron  mag   zinc calci potasi  cals, per 100g
    public static void createAndSetupData(HashMap map){
        Double[] orange = {11.7, 0.9, 0.1,  4.0, 89.0,   1.0, 0.0,  1.0, 2.0,   0.1, 4.0, 5.0,    47.0};
        Double[] broccoli = {7.2, 2.4, 0.4,  31.0,108.0, 7.0,176.0,30.0, 45.0, 23.0, 4.0, 3.0,    11.0};
        Double[] rice = {28.6, 2.4, 0.2,    0.0, 0.0,   0.0,  0.0, 8.0,  3.0,  3.0, 0.1,  1.0,    130.0};
        Double[] oats = {66.3, 12.0, 6.9,   0.0, 0.0,   0.0,  0.0, 20.0, 40.0, 20.0, 5.0, 12.0,   380.0};
        Double[] flaxseeds={10.0, 20.0, 40.0,0.0, 1.0,   2.0,  5.0, 28.5, 90.0, 30.0, 25.0, 20.0, 516.0};
        Double[] wheat = {70.0, 10.0, 1.9,  0.0, 0.0,   6.0,  3.0, 18.0, 25.0, 15.0, 4.0, 10.0,   322.0 };
        Double[] almonds = {19.3, 22.1, 50.8,0.0,0.0,   124.0, 0.0, 21.0, 69.0, 21.0, 22.0, 20.0, 597.0};


        String[] keys   = {"orange", "broccoli", "rice", "oats", "flaxseeds","wheat", "almonds"};
        Double[][] values = {orange, broccoli, rice, oats, flaxseeds, wheat, almonds};

        for (int i = 0; i < keys.length; i++){
            map.put(keys[i], values[i]);
        }
    }
    public static void printSumNutri(Double[] ar, String[] nutri){
        System.out.println("The sum of all your foods contains:");
        for(int i=0; i<ar.length; i++){
            System.out.println(nutri[i]+": "+ar[i]);
        }
    }

    public static void setFoodSumZero(Double[] ar){
        for(int i=0; i<ar.length; i++){
            ar[i] = 0.0;
        }
    }

    public static void getFoods(HashMap<String, Double[]> list){
        Object[] names = list.keySet().toArray();
        for(int i=0; i<list.size(); i++){
            System.out.print(names[i]);
            if(i!=list.size()-1) System.out.print(", ");
            if(i%10==0) System.out.println();
        }
        System.out.println();
        //System.out.println(list.keySet());
    }

    public static void setupGrams(Double[] sel, int g){
        for(int i=0; i<sel.length; i++){
            sel[i] = sel[i]*g*0.01;
        }
    }
}

class MyException extends Exception{
    String strin;
    MyException(String str) {
        strin=str;
    }
    public String toString(){
        return (strin);
    }
}