//-------------------------------------------------------------------
// File   :course.C
// Author :Alicia Thorsen
// Course :CS1129
//
// Implementation of Course class.
//-------------------------------------------------------------------

#include "course.h"
#include "student.h"
#include <fstream>
#include <iostream>
#include <iomanip>
#include <cstdlib>
using namespace std;

//-------------------------------------------------------------------
// Precondition: name and numericGrade contain the name and grade of a student.
// Postcondition: Adds the student to the roster.
//-------------------------------------------------------------------

void Course::addStudent(string name, double numericGrade) {
  if (numOfStudents == MAX_STUDENTS) {
    cerr << "Exceeded max number of students for " << courseName << endl;
    exit(1);
  }

  roster[numOfStudents].setName(name);
  roster[numOfStudents].setNumericGrade(numericGrade);
  numOfStudents++;
}

//-------------------------------------------------------------------
// Precondition: The roster array contains all the student information.
// Postcondition: Letter grades are computed for all students.
//-------------------------------------------------------------------

void Course::calcLetterGrades() {
  for (int i = 0; i < numOfStudents; ++i) 
    roster[i].calcLetterGrade();
}

//-------------------------------------------------------------------
// Precondition: The roster array contains all the student information.
// Postcondition: All student data for this course is written to an output file.
//-------------------------------------------------------------------

void Course::outputCourseData(ofstream& fileOut) const {
  int tableWidth; 

  // Left align columns.
  fileOut.setf(ios::left);

  // Write course name.
  fileOut << courseName << "\n" << endl;

  // Write table headings.
  fileOut << setw(NAME_COLUMN_WIDTH) << "Name" 
    << setw(NUMERIC_GRADE_COLUMN_WIDTH) << "Numeric Grade" 
    << "Letter Grade\n";

  // Draw a line under table headings.
  tableWidth = NAME_COLUMN_WIDTH + (2 * NUMERIC_GRADE_COLUMN_WIDTH);
  for (int j = 0; j < tableWidth; ++j)
    fileOut << "=";
  fileOut << endl;

  // Write each student row.
  for (int i = 0; i < numOfStudents; ++i) {
    fileOut << setw(NAME_COLUMN_WIDTH) << roster[i].getName()
      << setw(NUMERIC_GRADE_COLUMN_WIDTH) << roster[i].getNumericGrade()
      << roster[i].getLetterGrade() << endl;
  }
  fileOut << endl;
}