/****************************************************************************
** COPYRIGHT (C):    1997 Cay S. Horstmann. All Rights Reserved.
** PROJECT:          Practical OO Development with C++ and Java
** FILE:             employee.cpp
** PURPOSE:          employee class for chapter 3
** VERSION           1.0
** PROGRAMMERS:      Cay Horstmann (CSH)
** RELEASE DATE:     3-15-97 (CSH)
** UPDATE HISTORY:
****************************************************************************/

#include "setup.h"

EXPORT
#include "date.h"

EXPORT class Employee
{
public:
   Employee();
   Employee(string);
   Employee(string, int id);
   Employee(string n, int hd, int hm, int hy);

   void set_id(int id);
   void set_salary(double s);
   void raise_salary(double p);
   virtual void print() const;
   virtual void print(ostream& os) const;
   int id() const;
   double hourly_wage() const;
   virtual double weekly_pay(double hours) const;

   virtual ~Employee() {}

private:
   string _name;
   double _wage;
   int _id;
   Date _hiredate;
};

/*-------------------------------------------------------------*/

EXPORT class Manager : public Employee
/* PURPOSE:    A manager supervising employees
*/
{
public:
   Manager();
   Manager(string s);

   void add(Employee* e);
   virtual void print(ostream&) const;
   virtual double weekly_pay(double hours) const;
private:
#ifndef PRACTICALOO_MUST_USE_ALLOCATOR
	vector<Employee*> _superv; 
#else
   vector<Employee*, allocator<Employee*> > _superv; 
#endif
		// ID numbers of supervised employees
};

/*-------------------------------------------------------------*/

Employee::Employee()
: _wage(0),
  _id(0),
  _hiredate(Date::today().day(), Date::today().month(), Date::today().year())
{}

/*.............................................................*/

Employee::Employee(string n)
/* RECEIVES:   n - name
*/
:  _name(n),
   _wage(0),
   _id(0),
   _hiredate(Date::today().day(), Date::today().month(), Date::today().year())
{}

/*.............................................................*/

Employee::Employee(string n, int hd, int hm, int hy)
/* RECEIVES:   n - name
               hd, hm, hy - hire day, month, year
*/
:  _name(n),
   _wage(0),
   _id(0),
   _hiredate(hd, hm, hy)
{}

/*.............................................................*/

Employee::Employee(string n, int id)
/* RECEIVES:   n - name
               id - ID number
*/
:  _name(n),
   _wage(0),
   _id(id),
   _hiredate(Date::today().day(), Date::today().month(), Date::today().year())
{}

/*.............................................................*/

void Employee::set_salary(double s)
{  _wage = s;
}

/*.............................................................*/

void Employee::raise_salary(double p)
/* PURPOSE:    raise employee salary
   RECEIVES:   p - the percentage to raise by
*/
{  _wage *= 1 + p;
}

/*.............................................................*/

double Employee::hourly_wage() const	
{	const int WORKING_HRS_PER_YEAR = 2000;
	/* this is a commonly used figure -- 50 weeks at 
		40 hours/week
	*/

   return _wage / WORKING_HRS_PER_YEAR;
}

/*.............................................................*/

double Employee::weekly_pay(double h) const
/* PURPOSE:    computes pay for a week
   RECEIVES:   h - number of hours worked in that week
   RETURNS:    employee pay
   REMARKS:    overtime is paid at 1.5 * the normal rate
*/
{	if (h > 40) h += 0.5 * (h - 40);
	return h * hourly_wage ();
}

/*.............................................................*/

void Employee::set_id(int i)
{  _id = i;
}

/*.............................................................*/

int Employee::id() const
{  return _id;
}

/*.............................................................*/

void Employee::print() const
/* REMARKS:    the call print(cout) is a virtual call
*/
{  print(cout);
}

/*.............................................................*/

void Employee::print(ostream& os) const
{  os << _name << " " << _id << " " << _wage 
		<< " " << _hiredate << endl;
}

/*-------------------------------------------------------------*/

Manager::Manager(string name)
/* RECEIVES:   name - manager name
*/
: Employee(name)
{}


/*.............................................................*/

void Manager::add(Employee* e)
/* PURPOSE:    add an employee to be supervised by this manager
*/
{  _superv.push_back(e);
}

/*.............................................................*/

void Manager::print(ostream& os) const
{  Employee::print(os);

   for (int i = 0; i < _superv.size(); i++)
   {  os << "  ";
      _superv[i]->print(os);
   }
}

/*.............................................................*/

double Manager::weekly_pay(double h) const
/* PURPOSE:    computes pay for a week
   RECEIVES:   h - number of hours worked in that week
   RETURNS:    employee pay
   REMARKS:    no overtime for managers
*/
{  if (h <= 40) return hourly_wage() * h;
   else return 40 * h;
}