/* 11/6/2019
 Problem: given information about two Employees, calculate and print pay
 */
import java.util.Scanner;
import java.io.*;

/** This is version 5 of Payroll. 
  * use partially filled ARRAYS
  * we will count the # of employees being read in.
  */
public class PayrollV5b {
  
  /** read in: name, ID#, rate, hours
    * multiply rate*hours to get gross pay
    */
  public static void main(String[] args) throws IOException { 
    final int SIZE = 100;
    // we calculate gross pay
    double[] rates = new double[SIZE];
    double[] hours = new double[SIZE];
    double[] grossPay = new double[SIZE];
    double[] netPay = new double[SIZE];
    String[] names = new String[SIZE];
    int[] idnums = new int[SIZE];
    int numEmps=0;
    double totalPay = 0.0;
    Scanner sc = new Scanner(new File("employeeData.txt")); // gives us a Scanner object to help read
   
    while (sc.hasNextInt() && numEmps < SIZE) {
       // read in 4 pieces of data per employee
       idnums[numEmps] = sc.nextInt();
       names[numEmps] = sc.nextLine();
       hours[numEmps] = sc.nextDouble();
       rates[numEmps] = sc.nextDouble();
       
       // if hours>40 give 1.5*rate for all overtime hours
       if (hours[numEmps] > 40) {
         grossPay[numEmps] = (hours[numEmps]-40)*rates[numEmps]*1.5+40*rates[numEmps];
       }
       else {
         grossPay[numEmps] = rates[numEmps] * hours[numEmps];
       }
       // rule for taxes, 25% off if salary is > 1000
       // 15% off otherwise
       double taxes;
       if (grossPay[numEmps] >= 1000) {
         taxes = .25*grossPay[numEmps];
       }
       else {
         taxes = .15*grossPay[numEmps];
       }
       netPay[numEmps] = grossPay[numEmps] - taxes;
       totalPay+=netPay[numEmps]; // totalPay is total of Net Pay
       numEmps++;
    } // end while loop
    // fall out of while loop, print count and sum
    System.out.println("We processed " + numEmps + " employees." +
                        " Total pay is " + totalPay);
    // show that data is still available
    // outside of while loop
    PrintWriter outfile = new PrintWriter("payroll.txt");
    outfile.println("idnum name hours rate  gross pay   net pay");
    for (int i=0; i<numEmps; i++)
      outfile.printf("%d %s %4.2f %4.2f  %4.2f\n", 
                      idnums[i], names[i], hours[i], rates[i], netPay[i]);
    sc.close();
    outfile.close();
  }
}

/*** Lab 
  * Declare 3 parallel arrays.
  * 1. miles (represents miles travelled on several trips)
  * 2. pricePerMile (represents price per mile for that trip)
  * 3. trips (represents price for each trip)
  * trips[i] is the product of miles[i] and pricePerMile[i]
  * 
  * The first 2 arrays are filled either by reading in,
  * or by initialization.
  * The trips array gets filled by calculations.
  * At the end, print a table with one line per trip.
  * At home, you will modify this lab to use 
  * partially filled arrays.
  */