/*
 * Lab3 Spring 17 version to play with in class
 */
package lab3part1play;

import java.util.Scanner;

/**
 *
 * @author jcmtiernan
 */
public class Lab3Part1play
{

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args)
    {
        // choose car based on init cost, mpg, $ per gallon, 15Kmiles yrly, 10 yr
        double priceCar1;
        double priceCar2;
        double mpgCar1;
        double mpgCar2;
        double costPerGallon = 2.75;
        double milesPerYear = 15000;
        double years = 10;
        double oldMaint = .1;  // maintenance cost as a % of original price for "old" cars
        double newMaint = .04;
        int maintYear = 2007;
        
        double totalCar1;
        double totalCar2;
        String nameCar1;
        String nameCar2;
        int yearCar1;
        int yearCar2;
        double maintenance1 = 235.00;  
        double maintenance2 = 235.00;        
        Scanner input = new Scanner(System.in);
        
        String tempString1;
        String tempString2;
        double tempDouble1;
        double tempDouble2;
        char nl = '\n';
        
        priceCar1 = 965;
        priceCar2 = 2643;
        mpgCar1 = 19;
        mpgCar2 = 14;
        nameCar1 = "Yugo Cabrio";
        nameCar2 = "Suzuki Samarai";
        maintenance1 = priceCar1 * .04;
        maintenance2 = priceCar2 * .04;
        yearCar1 = 1991;
        yearCar2 = 1995;
        
        
        System.out.println("This program will help you choose a car "
                + "based on cost over time.");
        System.out.println();
        System.out.print("Please enter, on one line, the make, model and year"
                + nl +" of the first comparison car: ");
        tempString1 = input.nextLine();
        nameCar1 = inputCheckCar((tempString1.split(" ").length < 3), 
                "make and model", tempString1, nameCar1);
        if (tempString1.split(" ").length == 3)
        {
            try
            {
            tempDouble1 = Integer.parseInt(tempString1.split(" ")[2]);
            yearCar1 = (int)inputCheck((tempDouble1 < 1900), 
                    "year", tempDouble1, yearCar1);
            }
            catch (NumberFormatException nfe)
            {  
            yearCar1 = (int)inputCheck(true, 
                    "year", -1, yearCar1);            
            }
        }
        
         
        System.out.print("Please enter the make, model, and year of the "
                + "second comparison car: ");
        tempString2 = input.nextLine();
        nameCar2 = inputCheckCar((tempString2.split(" ").length < 3), 
                "make and model", tempString2, nameCar2);
        if (tempString2.split(" ").length == 3)
        {
            try
            {
            tempDouble2 = Integer.parseInt(tempString2.split(" ")[2]);
            yearCar2 = (int)inputCheck((tempDouble2 < 1900), 
                    "year", tempDouble2, yearCar2);
            }
            catch (NumberFormatException nfe)
            {  
            yearCar2 = (int)inputCheck(true, 
                    "year", -1, yearCar2);            
            }
        }       

        System.out.print("Please enter the price and the "
                + "average miles per gallon of the "+ nameCar1+": ");
        tempDouble1 = input.nextDouble();
        priceCar1 = inputCheck((tempDouble1 < 0), 
                "price", tempDouble1, priceCar1);        

        tempDouble1 = input.nextDouble();
        mpgCar1 = inputCheck((tempDouble1 < 0), 
                "mpg", tempDouble1, mpgCar1);        
       
        System.out.print("Please enter the price and the "
                + "average miles per gallon of the "+ nameCar2+": ");
        tempDouble2 = input.nextDouble();
        priceCar2 = inputCheck((tempDouble2 < 0), 
                "price", tempDouble2, priceCar2);

        tempDouble2 = input.nextDouble();
        mpgCar2 = inputCheck((tempDouble2 < 0), 
                "mpg", tempDouble2, mpgCar2);         
       
        /*
            1.a. Allow the user to specify the year to separate "old" cars
                 and "new" cars.  Error check the year to make sure it 
                 is meaningful.
            1.b. Have user select a percentage of original price to 
                 assign for maintenance cost of "new" cars and "old" cars.
                 No error checking is needed for this question.
        */ 
        
        if (yearCar1 >= maintYear)
            maintenance1 = priceCar1 * newMaint;
        else
            maintenance1 = priceCar1 * oldMaint;
        if (yearCar2 >= maintYear)
            maintenance2 = priceCar2 * newMaint;
        else
            maintenance2 = priceCar2 * oldMaint; 
        
        /*
            1.c. Allow the user to specify the number of years to consider for cost
                 No error checking is needed for this question.
        */        
        
        /*
            1.d. Accept the costPerGallon from user IF desired
                 No error checking is needed for this question.
        */ 
        
        // cost for car is init price plus cost per year times 10
        // cost per year is miles per year divided by mpg times cost per gallon
        
        totalCar1 = (milesPerYear / mpgCar1 * costPerGallon 
                + maintenance1) * years + priceCar1;
        totalCar2 = (milesPerYear / mpgCar2 * costPerGallon 
                + maintenance2) * years + priceCar2;
        
        System.out.println();
        System.out.println("The comparison of of car costs is the initial price \n"
                + "plus cost per year over "+(int)years+" years with an average \nof "
                +(int)milesPerYear+" miles per year and a price of "
                +costPerGallon+" per gallon of gas plus a \n"
                + "yearly maintenance cost of %"
                +(newMaint*100)+" of the original car cost \n"
                + "for cars newer than "+maintYear+" and %"
                +(oldMaint*100)+" for older.");
        System.out.println();
        System.out.print("Total cost for the "+nameCar1+" is ");
        System.out.printf("%.2f\n", totalCar1);

        System.out.print("Total cost for the "+nameCar2+" is ");
        System.out.printf("%.2f\n", totalCar2);
        System.out.println();
        
    }
    public static String inputCheckCar(boolean test, String item, 
            String tempStr, String defStr)
    {
        String t1, t2;
        if (test)
        {
            System.out.println("This is an invalid "+item+".");
            System.out.println("Default "+item+" of "+defStr+" will be used.");
            return defStr;
        }
        else
        {
            t1 = tempStr.split(" ")[0];
            t2 = tempStr.split(" ")[1];
            return t1+" "+t2;
        }
    }    
    
    public static double inputCheck(boolean test, String item, double tempDouble, double defDouble)
    {
        if (test)
        {
            System.out.println("This is an invalid "+item+".");
            System.out.println("Default "+item+" of "+defDouble+" will be used.");
            return defDouble;
        }
        else
        {
            return tempDouble;
        }

    }
    
}