//*********************************************************
// GrossPay2.cpp
//
// Calculate and display the gross pay given the hourly
// wage and the number of hours worked.
//
// D. Searls
// Asbury College
// Aug 2003
//*********************************************************
#include <iostream>
#include <iomanip>
#include <string>
#include <fstream>
using namespace std;

const double MAXHOURS = 40.0;
const double OT_MULTIPLIER = 1.5;
const int MAXSIZE = 100;

//*********************************************************
// getEmployeeData
//
// Out Parameters: identity, hours, wageRate, n
//
// Returns: void
//*********************************************************
void getEmployeeData(string identity[], double hours[],
                     double wageRate[], int & n)
{
    ifstream infile;
    string id;
    double hourlyWage;
    double hoursWorked;
    
    infile.open("EmployeeData.txt");
    n = 0;
    infile >> id >> hourlyWage >> hoursWorked;
    while (!infile.fail() && n < MAXSIZE)
    {
        identity[n] = id;
        wageRate[n] = hourlyWage;
        hours[n] = hoursWorked;
        n = n+1;
        
        infile >> id >> hourlyWage >> hoursWorked;
    }
    infile.close();
}

//*********************************************************
// calculateGrossPay
//
// In Parameters: hours, payRate, n
//
// Out Parameter: grossPay
//
// Returns: void
//*********************************************************
void calculateGrossPay(const double hours[], const double payRate[],
                       double grossPay[], int n)
{
    for(int i = 0; i < n; i++)
    {
        if (hours[i] <= MAXHOURS)
        {
            grossPay[i] = hours[i] * payRate[i];
        }
        else
        {
            grossPay[i] = MAXHOURS * payRate[i]
                        + (hours[i] - MAXHOURS) * OT_MULTIPLIER * payRate[i];
        }
    }
}

//*********************************************************
// displayGrossPay
//
// In Parameters: id, grossPay, n
//
// Returns: void
//*********************************************************
void displayGrossPay(const string employeeID[],
                     const double grossPay[], int n)
{
    ofstream outfile;
    
    outfile.open("PayrollReport2.txt");
    
    outfile << fixed << setprecision(2);
    outfile << "Employee  Gross Pay" << endl;
    outfile << "--------  ---------" << endl;
    for (int i = 0; i < n; i++)
    {
        outfile << setw(8) << employeeID[i]
                << setw(11) << grossPay[i] << endl;
    }
    outfile.close();
}

//*********************************************************
//               M A I N   D R I V E R
//*********************************************************

int main()
{
    int n;              // Number of employees
    string empID[MAXSIZE];
    double hoursWorked[MAXSIZE];
    double hourlyWage[MAXSIZE];
    double grossPay[MAXSIZE];

    getEmployeeData(empID, hoursWorked, hourlyWage, n);
    calculateGrossPay(hoursWorked, hourlyWage, grossPay, n);
    displayGrossPay(empID, grossPay, n);
    
    cout << "Output sent to 'PayrollReport2.txt'" << endl;
    
    return 0;
}