/*
	Course Number   : ISYS 116
	Student Name    : Jason Gradziel
	Student Number  : 826-135-535
	Professors Name : Gene Rychlewski
	Class Name      : Thursday
	Lab Title       : Assignment # 10 Pgm: PAYENTRY
	*/

#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
#include <dos.h>

void getyesno();

FILE *Safe_fopen(char *, char *);
void Safe_fclose(FILE *);

typedef struct
{
	char	employee_id[5];
	float 	hours_worked[5];
	double	rate_per_hour;
} EMPLOYEE_REC;

typedef char *STRING;
typedef enum {
	mon,tue,wed,thu,fri,sat,sun
	} DAY;

/* Global Variables */
int flag =1;

main()
{
	clrscr();
	FILE *input_file,
	     *output_file;
	EMPLOYEE_REC employee;
	int record_count = 0;
	int days;
	STRING day_names[7] = {"Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"};
	DAY    day;

	output_file = Safe_fopen("payentry.dat", "w+b");

	while(flag == 1)
	{
	gotoxy(32,1);	printf("**************");
	gotoxy(32,2);	printf("* Data Entry *");
	gotoxy(32,3);	printf("**************");

	gotoxy(9,6);	printf("Please enter the following :");
	gotoxy(17,8);	printf("Employee id number : _____");

	gotoxy(20,9);	printf("Hours worked on : ");

	gotoxy(29,10);	printf("%s : ___", day_names[0]);
	gotoxy(28,11);	printf("%s : ___", day_names[1]);
	gotoxy(26,12);	printf("%s : ___", day_names[2]);
	gotoxy(27,13);	printf("%s : ___", day_names[3]);
	gotoxy(29,14);	printf("%s : ___", day_names[4]);

	gotoxy(12,15);	printf("Employees rate per hour : _____");

	gotoxy(38,8);	gets(employee.employee_id);

	days=0;
	for (day = mon; day <= fri; ++day)
	{
		gotoxy(38,days+10);
		scanf("%f", &employee.hours_worked[day]);
		days++;
	}

	gotoxy(38,15);	scanf("%lf", &employee.rate_per_hour);

	while ( fscanf(output_file, "%s %f %lf", employee.employee_id, &employee.hours_worked, &employee.rate_per_hour) == 3)
	{
		fwrite(&employee, sizeof(EMPLOYEE_REC), 1, output_file);
		++record_count;
	}

		getyesno();
		gotoxy(20,20);	printf("                                ");
		fflush(stdin);

	}// end of while quit loop

	gotoxy(20,18);	printf("%d record(s) were written.", record_count);

	Safe_fclose(output_file);

	gotoxy(20,23);	printf("Press any key to comtinue...");
	getch();
	return 0;
}

FILE * Safe_fopen(char *f_name, char *mode)
{
	FILE *file_ptr;

	if ( (file_ptr = fopen(f_name, mode)) == NULL)
	{
		fprintf(stderr, "\nError: File %s cannot be opened.", f_name);
		getch();
		exit(1);
	}
	return file_ptr;
}

void Safe_fclose(FILE *file_ptr)
{
	if ( fclose(file_ptr) == EOF)
	{
		fprintf(stderr, "\nError: The file cannot be closed.");
		getch();
		exit(1);
	}

	return;
}

void getyesno()
{
	int flag2=1;
	while (flag2==1)
	{
	char quit,y,Y,n,N;
	gotoxy(20,20);	printf("Do you want to quit?(Y/N) ");
	quit=getche();
	getch();
	if (quit == 'Y' || quit == 'y')
		{
		//printf("\n\tBye Bye!");
		flag = 0; flag2=0;
		delay(500);
		//getch();
		}
	else if (quit == 'N' || quit == 'n')
		{
		//printf("\n\tO.K.");
		delay(500);
		flag2=0;
		//getch();
		}
	else
		{
		printf("\n\tThat is incorrect.");
		delay(500);
		//getch();
		}
	}
}