//********************************************************************
//
//  commission.cpp
//  CSCI 241 Inheritance and Polymorphism Example
//
//********************************************************************

#include <iostream>
#include "commission.h"

using std::cout;
using std::endl;
using std::string;

/**
 * Constructor for commission employee.
 *
 * @param first_name The employee's first name.
 * @param last_name The employee's last name.
 * @param ssn The employee's Social Security Number.
 * @param sales The employee's gross sales for the week.
 * @param rate The employee's commission rate.
 *
 * @note The first name, last name, and ssn are passed to the base
 *       class constructor.
 ********************************************************************/
commission::commission(const string& first_name, const string& last_name,
                       const string& ssn, double sales, double rate) :
                       employee(first_name, last_name, ssn)
{
    set_sales(sales);
    set_rate(rate);
}

/**
 * Accessor function for gross sales data member.
 *
 * @return The employee's gross sales for the week.
 ********************************************************************/
double commission::get_sales() const
{
    return sales;
}

/**
 * Mutator function for gross sales data member.
 *
 * @param wage The new gross sales.
 *
 * @note If an attempt is made to set the sales to a negative value,
 *       the sales will instead be set to 0.
 ********************************************************************/
void commission::set_sales(double sales)
{
    this->sales = (sales < 0.0) ? 0.0 : sales;
}

/**
 * Accessor function for commission rate data member.
 *
 * @return The employee's commission rate.
 ********************************************************************/
double commission::get_rate() const
{
    return rate;
}

/**
 * Mutator function for commission rate data member.
 *
 * @param wage The new commission rate.
 *
 * @note If an attempt is made to set the commission rate to an
 *       impossible value, the rate will instead be set to 0.
 ********************************************************************/
void commission::set_rate(double rate)
{
    this->rate = (rate > 0.0 && rate < 1.0) ? rate : 0.0;
}

/**
 * Computes the employee's earnings for the week.
 *
 * @return The computed earnings.
 ********************************************************************/
double commission::earnings() const
{
    return rate * sales;
}

/**
 * Prints information for commission employee.
 ********************************************************************/
void commission::print() const
{
    cout << "Commission employee:\n";
    
    // Call employee version of print() to print name and ssn.
    employee::print();
    
    // Print remaining information.
    cout << "Gross sales: $" << sales << endl;
    cout << "Commission rate: " << rate << endl;
}