/**
 * student-experiments
 *   Some experiments with students.
 */

// +---------+--------------------------------------------------------
// | Headers |
// +---------+

#include <stdio.h>              // For printf, stdout, and such

#include "student.h"            // Duh.
#include "student-sort.h"       // For our sorting routine
#include "student-compare.h"    // For our comparators


// +---------+--------------------------------------------------------
// | Helpers |
// +---------+

/**
 * Print out a horizontal rule of a particular length.
 */
static void
hrule (int len)
{  
  int i;
  for (i = 0; i < len; i++)
    putchar ('-');
  putchar ('\n');
} // hrule

/**
 * Print out an array of students
 */
static void
print_students (struct student *students[], int num_students)
{
  int i;
  for (i = 0; i < num_students; i++)
    {
      printf ("%2d: ", i);
      student_print (students[i], stdout);
      printf ("\n");
    } // for each student
} // print_students


// +------+-----------------------------------------------------------
// | Main |
// +------+

int 
main ()
{
  // Set up a group of sample students.
  struct student *class[] =
    {
      student_new ("John", "Doe", "00001234", 3.4, 0),
      student_new ("John", "Ode", "10203040", 2.0, 100000),
      student_new ("Jane", "Doe", "00001233", 3.9, 1005000),
      student_new ("Jack", "Doe", "00112233", 3.2, 234012),
      student_new ("Jan",  "Edo", "20199999", 2.7, 123450),
      student_new ("Sam",  "Are", "20199998", 1.5, 50),
      student_new ("Sam",  "IAm", "20199908", 3.5, 543210),
      student_new ("Jane", "IAm", "20199908", 3.5, 543210)
    };
  int num_students = sizeof (class) / sizeof (struct student *);

  // Print them out.
  hrule (80);
  print_students (class, num_students);

  // Sort them by name
  sort_students (class, num_students, compare_students_by_name);
  hrule (80);
  printf ("SORTED BY NAME\n");
  printf ("--------------\n");
  print_students (class, num_students);

  // Sort them by student id

  // Sort them by GPA

  // Sort them by debt

  // And we're done.
  return 0;
} // main