/*Divine's command line phonebook application  */
/*written in the C programming language w/vs   */

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

char name[25];
int number[25];
lookup();
add();
add2();
dump_line();
noname();

main()
{
 int x=0;



	printf("       *********************PHONE BOOK********************\n\n");
		printf("1. Lookup\n2. Add new entry\n3. Exit\n\n");

			scanf("%d",&x);

			while (x != 1 && x != 2 && x != 3){
				dump_line(stdin);
				scanf("%d",&x);
			}

			if (x == 1 )
			{
				system("cls");
				lookup();
			}

					else if (x ==2)
					{
						system("cls");
						add();
					}
					else{
						printf("Exiting phonebook\n");
							return 0;
					}

			getch();

} /********END OF MAIN FUNCTION***********/

lookup()
{
	int x,y=5;
 FILE *pt;
 char findname[25];
char words[25];



pt = fopen ("phonebook.txt","r");
	if (pt == NULL)
	{
		printf("File not found!\n");
			return 0;
	}

	printf("        *****************PHONE BOOK LOOKUP*****************\n\n\n");
		printf("Type \"all\" to list all entries\n\n");
	printf("Enter a name: \n");

				scanf("%25s",name);

		if ( stricmp(name,"all") != 0 ){
				do{
					if (y == EOF){
						printf("Name doesn't exist\n\n");
							getch();
							noname();
				}
					y = fscanf(pt,"%s",findname);

				}while (stricmp(name,findname) != 0);

					fgets (number,25,pt);
						printf("\n\nName: %s\nNumber:%s",findname,number);
		}

		else if ( stricmp (name,"all") == 0 )
		{
			x = 1;
				printf("\n");
				do {
				x = fscanf(pt,"%s",words);
					if (x == EOF)
						break;
			printf("Name: %s\n",words);
				x = fscanf(pt,"%s",words);
			printf("Number: %s\n",words);
					printf("\n---------------------------\n");
				} while (x != EOF);



		}
			getch();

			printf("\n\nWould you like to look up another name? (y//n)\n\n");

			do {
				x = getch();
			} while (x != 'y' && x != 'n');

			if (x == 'y'){
				system("cls");
					lookup();
			}

			else if (x == 'n'){
				system("cls");
					main();
			}




				fclose (pt);



} /*******END OF LOOKUP FUNCTION************/

add()
{
	FILE *pt;
		printf("            *****************ADD ENTRY*****************\n\n\n");
	printf("Add a name and a number now:\n\n");
		pt = fopen ("phonebook.txt","a");
			if (pt == NULL)
			{
				printf("NO PHONEBOOK FOUND!\n");
					return 0;
			}




				scanf("%s %s",name,number);
				fprintf (pt,"%s %s\n",name,number);

			printf("\nNumber added successfully!\n\n");
			getch();
				add2();

} /*******END OF ADD FUNCTION********/


add2()
{
	int option;


	printf("Would you like to add another number? (y//n)\n");
	do {
		option = getch();
	  } while (option != 'y' && option != 'n');

	if (option == 'y'){
			system ("cls");
		add();
	}

		else {
		  printf("\nReturning to main menu\n\n");
			system ("cls");
				main();
		}

} /***end of add2 function***/

noname()
{
	int option;
printf("Would you like to look up another name? (y//n)\n\n");

	do{
	option = getch();
	} while (option != 'y' && option != 'n');

			if (option == 'y'){
				system("cls");
				add();
			}


		else {
				printf("Returning to main menu\n\n");
					system ("cls");
					main();
		}
} /***end of noname function****/


dump_line(FILE *fp)
{
  int ch;

  while( (ch = fgetc(fp)) != EOF && ch != '\n' )
    /* null body */;
}