/*
 *   Intro to Programming CSE 1310
 * University of Texas at Arlington
 */

package code24oct17lab2;

import java.util.Scanner;

/**
 *
 * @author jcmtiernan
 */
public class Code24Oct17Lab2 
{

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) 
    {
        // Cannot put 0 on front of number in code
        // or it is interpreted as OCTAL not DECIMAL

        int exactStartTime = 0;
        int exactBreakStartTime = 0;
        int exactBreakEndTime = 0;
        int exactEndTime = 0;        
        
        
        int recStartTime = 0;
        int recBreakStartTime = 0;
        int recBreakEndTime = 0;
        int recEndTime = 0;    
        
        Scanner input = new Scanner(System.in);
        
        System.out.println("This system calculates a day's pay.  It accepts \n"
                + "time in military format, 0000 to 2359.  For each day there \n"
                + "will be a start time and an end time and there will also be \n"
                + "a break during the day with a start and end time.  Please \n"
                + "enter the requested times in military format below.\n"
                + "If the time is before 10am, do not put the extra 0 on the\n"
                + "front of your military time, i.e. for 7:45am use 745, not 0745.\n\n");
        System.out.println("Please enter the time you went on the clock for \n"
                + "the day in the format a 24-hour HHMM with no colon: ");
        exactStartTime = input.nextInt();
        System.out.println("Please enter the time that you began your break: ");
        exactBreakStartTime = input.nextInt();
        System.out.println("Please enter the time that you returned to work from \n"
                + "your break: ");
        exactBreakEndTime = input.nextInt();
        System.out.println("Please enter the time that you ended your work day: ");
        exactEndTime = input.nextInt();
        
        // error checking is done on input exactStartTime
        
        exactStartTime = errorCheck(exactStartTime);
        
        // rounding for exactStartTime
        // put into it is exactStartTime and get out recStartTime       
        recStartTime =  rounding(exactStartTime);

        
        // put into it is exactBreakStartTime and get out recBreakStartTime
        exactBreakStartTime = errorCheck(exactBreakStartTime);
        recBreakStartTime = rounding(exactBreakStartTime);
        
        
        // put into it is exactBreakEndTime and get out recEndTime
        exactBreakEndTime = errorCheck(exactBreakEndTime);
        recBreakEndTime = rounding(exactBreakEndTime);
        
        
        // put into it is exactEndTime and get out recEndTime
        exactEndTime = errorCheck(exactEndTime);
        recEndTime = rounding(exactEndTime);
        
         
        

        // need to deal with minutes seperately out of 60 not out of 100
        int rBSTm = recBreakStartTime % 100;
        int rBSTh = recBreakStartTime - rBSTm;
        int rSTm = recStartTime % 100;
        int rSTh = recStartTime - rSTm;
        
        int firstHalf = (rBSTh - rSTh) + (rBSTm - rSTm);
        
        if ((rBSTm - rSTm) < 0)
        {
            // 1600 - 1215 gives 385 but should give 345 so 
            firstHalf = firstHalf  - 40;
        }

        
        int rBETm = recBreakEndTime % 100;
        int rBETh = recBreakEndTime - rBETm;
        int rETm = recEndTime % 100;
        int rETh = recEndTime - rETm;      
        
        int secondHalf = (rETh - rBETh)+(rETm - rBETm);
        
        if ((rETm - rBETm) < 0)
        {
            secondHalf = secondHalf  - 40;
        }        
        
        // need to check for min value over 45 and handle
        int day = firstHalf + secondHalf;

        if ((day % 100) > 45)
        {
            day = (day - 60) + 100; // minus a 60 minute hour and add 100 to record the hour
        }  
                
        // Convert HHMM total to HH.hh
        double hoursPay = ((day / 100)
                + (((day % 100)/15) * .25));
        
        double hoursRate = 8.25;
        double totalPay = hoursPay * hoursRate;

        System.out.printf("%8s%8s%8s%8s%8s\n","Time ","","Start","End","");
        System.out.printf("%8s%8s%8s%8s%8s\n","Data:","Start","Break","Break","End");
        System.out.printf("%8s%8d%8d%8d%8d\n","Exact",exactStartTime,exactBreakStartTime,exactBreakEndTime,exactEndTime);
        System.out.printf("%8s%8d%8d%8d%8d\n\n","Recorded",recStartTime,recBreakStartTime,recBreakEndTime,recEndTime);

        System.out.printf("%8s%8s\n%8s%8d\n","","Total","hhmm",day);
        System.out.printf("%8s%8d\n%8s%8d\n\n","Hours &",(day/100),"Minutes",(day%100)); 
        System.out.printf("%8s%8.2f\n%8s%8.2f%8s\n","As hours",hoursPay,"At rate",hoursRate," per hour");  
        System.out.printf("%7s%1s%8.2f\n\n","Pay ","$",totalPay);
               
    }
    
    public static int rounding(int exactTime) 
    {   int recordedTime = 0;
    
        int min = exactTime % 100;
        int retTime = exactTime - min;

        if ((min >= 0) && (min <= 7))
        {
            min = 0;
        }
        else if ((min >= 8) && (min <= 22))
        {
            min = 15;
        }
        else if ((min >= 23) && (min <= 37))
        {
            min = 30;
        }  
        else if ((min >= 38) && (min <= 52))
        {
            min = 45;
        } 
        else if ((min >= 53) && (min <= 59))
        {
            min = 100;
        }  
        else 
        {
            min = 0;  // minute value was greater than 59
        }
        retTime = retTime + min;
        if (retTime > 2359)
        {
            retTime = 0;
        }
        recordedTime = retTime;
        return recordedTime;
    }
    
    public static int errorCheck(int exactTime)     
    {
        int mm = exactTime % 100;
        int hh = exactTime / 100;
        if (exactTime < 0) //  || (h == 24) invalid hour 24;  check for negative value
        {
            hh = 0;
            if (mm < 0)
            {
                mm = -mm;
            }
        }
        if (mm > 59)
        {
            mm = mm - 60;
            hh = hh + 1;  // hh++;
        }
        if (hh >= 24)
        {
            hh = hh % 24;
        }
        exactTime = hh * 100 + mm; 
        return exactTime;
            
    }

}