import java.util.Scanner;
import java.io.*;

/** The Employee class will read in info about any number of
  * employees and caculate
  * the weekly salary for each employee. 
  * This version uses METHODS
  */
public class EmployeeV7 {
  
 public static void main(String[] args) throws IOException {
   
   String name;
   double hours, rate, sum=0.0;
   int idnum, numEmployees=0; // this will count the number of employees
   Scanner sc = new Scanner(new File("employeeData.txt"));
   PrintWriter outFile = new PrintWriter("employeePay.txt");
   
   // write headings to file
   printHeadings(outFile);
   // while there is data to be read
   while (sc.hasNext()) {   
      // Step 1: Read in idnum, name, hours, rate for employee
      idnum=sc.nextInt();
      name = sc.next();
      hours = sc.nextDouble();
      rate = sc.nextDouble();
      // Step 2: Calculate gross pay and net pay
      double grossPay = calculateGross(hours, rate);
      double netPay = calculateNet(grossPay);
      // Step 3: print to the file
      printEmployee(outFile, idnum, name, hours, rate, grossPay, netPay);
      // Step 4: update total and counter
      sum+=netPay;
      numEmployees++;
   }// end while loop
   // after fall out of while loop, print the number of employees and total pay
   System.out.printf("We processed %d employees, Total pay is: $%.2f.\n",
                     numEmployees, sum);
   sc.close();
   outFile.close();
 }
 /** prints headings to a file.
   * @param out which is a PrintWriter 
   */
 public static void printHeadings(PrintWriter out) {
        out.println("ID      Name     Hours     Rate   " +
                        " Gross Pay    Net Pay");
 }
 /** prints data about a single employee
   * accepts all pieces of data about the employee and a PrintWriter
   */
 public static void printEmployee(PrintWriter out, int id, String nm, double hrs, double rt, double gross, double net) {
    out.printf("%d    %-8s %5.2f %9.2f %10.2f %11.2f", 
                     id, nm, hrs, rt, gross, net);
    out.println(); // goes to next line
 }
 public static double calculateGross(double hours, double rate) {
    if (hours <= 40) {
         return hours * rate;
    }
    else {
         return 40 * rate + (hours-40)*1.5*rate;
    }
 }
 public static double calculateNet(double pay) { 
   // subtract taxes from the gross pay which is the parameter
      if (pay >= 1000){
         return pay - .15 * pay;
      }
      else {
         return pay - .10 * pay;
      }
 }
}
/** Lab: write 3 methods besides for main:
  * 1. read in a temperature in degrees celcius and return that number
  * 2. accept a temperature in degrees celcius, convert it to 
  * faranheit and return the faranheit number.
  * 3. isHot that will return true or false based upon a temperature
  * 
  * main should call all three methods. main should print a sentence
  * saying for example:
  * # in degrees celcius is # in faranheit and it IS hot.
  * No printing is done in the methods.
  * E.C. main calls the methods in a loop.
  */