#include "university.h"
#include "professor.h"
#include "student.h"

#include <iostream>
#include <string>
#include <fstream>

using namespace std;

//-------------------------------------------------------

ostream &operator<< (ostream &output, const Professor &p)
{
	output << "Professor: " << p.first_name << " " << p.last_name << " is teaching " << p.num_classes << " classes.";

	return output;
}

//-------------------------------------------------------

istream &operator>> (istream &input, Professor &p)
{
	input >> p.first_name >> p.last_name >> p.num_classes;

	return input;
}

//-------------------------------------------------------

ostream &operator<< (ostream &output, const Student &s)
{
	output << "Student: " << s.first_name << " " << s.last_name << " (id=" << s.id << ") has a " << s.gpa << " gpa.";
	
	return output;
}

//-------------------------------------------------------

istream &operator>> (istream &input, Student &s)
{
	input >> s.id >> s.first_name >> s.last_name >> s.gpa;

	return input;
}

//-------------------------------------------------------

ostream &operator<< (ostream &output, const University &u)
{
	output << "University has " << u.num_professors << " professors" << endl;
	output << "           and " << u.num_students << " students" << endl << endl;
	output << "It is currently " << SEMESTERS[u.current_semester] << " semester" << endl;

	u.PrintProfessors();
	u.PrintStudents();

	return output;
}

//-------------------------------------------------------

istream &operator>> (istream &input, University &u)
{
	input >> u.num_professors;
	input >> u.num_students;
	input >> u.current_semester;

	int i;

	cout << "PROFS" << endl;
	u.professors = new Professor[u.num_professors];

	cout << "STUS" << endl;
	u.students = new Student[u.num_students];

	for (i=0; i < u.num_professors; i++)
		input >> u.professors[i];

	for (i=0; i < u.num_students; i++)
		input >> u.students[i];

	return input;
}

//-------------------------------------------------------
//-------------------------------------------------------

void main (void)
{
	University u(0,0);

	cout << u;

	ifstream ifp;

	ifp.open("university.txt", ios::in);

	if (!ifp) {
		cerr << "Error - file could not be opened" << endl;
		exit(1);
	}

	ifp >> u;

	ifp.close();

	cout << u << endl;

	u.RunSemester();
}