/*Student_Template.cpp
Example for Template Method Pattern (GoF)
Feza BUZLUCA, Lecture Notes, Slide 10.38 -
*/

#include <iostream>
using std::cout;
using std::endl;

/* Abstract base class */
class Student{          		
public:
	void createReport();  		// Template Method

protected:
	virtual void calculateAverage() = 0;      // Abstract primitive operation, pure virtual function
	virtual void printReport() = 0;	  // Abstract primitive operation, pure virtual function
};

void Student::createReport()  	// Template Method: Skeleton of the algorithm
{
	// Step 1,  common for all types
	cout << "Read Courses from a database (common for all students)" << endl;  // Step 1

 	calculateAverage();		// Step 2, specific to different types
	printReport();			// Step 3, specific to different types
}

//--------  Subtype: Undergraduate Student ----------
class UnderGradStudent : public Student{
private:			  // It can also be protected
	void calculateAverage(){      // Concrete primitive function, specific to Undergraduate Students
		cout << "Average of the Undergraduate Student" << endl;
	}

	void printReport(){             // Concrete primitive function, specific to Undergraduate Students
		cout << "Report of the Undergraduate Student" << endl;
	}
};


//--------  Subtype: Master Student ----------
class MasterStudent : public Student{
private:			      // It can also be protected
	void calculateAverage(){          // Concrete primitive function, specific to Master Students
		cout << "Average of the Master Student" << endl;
	}

	void printReport(){                 // Concrete primitive function, specific to Master Students
		cout << "Report of the Master Student" << endl;
	}
};

// Testing the implentation
int main()
{
	UnderGradStudent  uStudent;
	uStudent.createReport();

	cout << "------------" << endl;

	MasterStudent  mStudent;
	mStudent.createReport();

	return 0;
}