#include <stdio.h>
#include "ClassList.h"

Student* GetStudent (void);

void main() {
    int      i, count, position;
    long     idNum;
    Student* aStudent;

    InitializeList();

    printf ("\n\nTesting Prepend - How many students?\n");
    scanf ("%d", &count);

    for (i = 1; i <= count; ++i) {
        aStudent = GetStudent();
        Prepend (aStudent);
    }

    printf ("\n\n");
    PrintList();

    printf ("\n\n");
    DumpList();

    printf ("\n\nEmptying the list...\n");
    EmptyList();

    printf ("\n\n");
    DumpList();

    printf ("\n\nTesting Append - How many students?\n");
    scanf ("%d", &count);

    for (i = 1; i <= count; ++i) {
        aStudent = GetStudent();
        Append (aStudent);
    }

    printf ("\n\n");
    PrintList();

    printf ("\n\n");
    DumpList();

    printf ("\n\nTesting Insert - How many students?\n");
    scanf ("%d", &count);

    for (i = 1; i <= count; ++i) {
        aStudent = GetStudent();
        Insert (2, aStudent);
    }

    printf ("\n\n");
    PrintList();

    printf ("\n\n");
    DumpList();

    while (1) {
        printf ("\n\nTesting Find and Delete - ");
        printf ("Enter student id (or -1 to quit):\n");
        scanf ("%ld", &idNum);
        if (idNum == -1) {
            break;
        }
        position = Find (idNum);
        if (position == 0) {
            printf ("Id Number %ld not found\n", idNum);
        } else {
            printf ("Deleting Id Number %ld\n", idNum);
            Delete (position);

            printf ("\n\n");
            PrintList();

            printf ("\n\n");
            DumpList();
        }
    }
  
    printf ("\n\nEnd of Program\n");
}

/*  This functions gets student data from standard input     */
/*  and returns a pointer to a Student structure intialized  */
/*  with the values entered.                                 */

Student* GetStudent() {
    long idNum;
    char name    [MAX_SZ_NAME + 1];
    char address [MAX_SZ_ADDRESS + 1];
    char major   [SZ_MAJOR + 1];
    int  month;
    int  day;
    int  year;

    printf ("\n\nEnter student id number:\n");
    scanf ("%ld%*c", &idNum);
    printf ("Enter name (%d chars. max.):\n", MAX_SZ_NAME);
    gets (name);
    printf ("Enter address (%d chars. max.):\n", MAX_SZ_ADDRESS);
    gets (address);
    printf ("Enter major (%d chars.):\n", SZ_MAJOR);
    gets (major);
    
    printf ("Enter date of birth (mm dd yyyy):\n"); 
    scanf ("%d%d%d", &month, &day, &year);

    return (CreateStudent (idNum, name, address, major, month, day, year));
}