/*This file is a part of Library-Management

Library-Management is a free software: you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation, either version 3 of the License, or

(at your option) any later version.

This program is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

GNU General Public License for more details.

You should have received a copy of the GNU General Public License

along with this program. If not, see <http://www.gnu.org/licenses/>.*/

#include<stdio.h>

#include<stdlib.h>

#include"libman.h"

int foundd = 0;

void edit(Book *b, FILE *fp, int id) {

if(b->id == id) {

mvaddstr(15,32,"The book is available");

mvaddstr(17,32,"Enter new name ");

getstr(b->name);

mvaddstr(18,32,"Enter new author name ");

getstr(b->author);

mvaddstr(19,32,"Enter new quantity ");

scanw("%d", &b->quantity);

mvaddstr(20,32,"Enter new rackno ");

scanw("%d", &b->rackno);

mvaddstr(21,40,"~~ RECORD MODIFIED ~~");

fseek(fp, ftell(fp) - sizeof(Book), 0); /*Updating modified record */

fwrite(b, sizeof(Book), 1, fp);

foundd = 1;

}

}

void editentry() {

system("clear");

init_pair(2,COLOR_MAGENTA,COLOR_BLACK);

attron(COLOR_PAIR(2));

border(0,0,0,0, 0,0,0,0);

attroff(COLOR_PAIR(2));

mvaddstr(1,60,"~~~~~~ EDIT BOOK RECORDS ~~~~~~");

int id, c;

char option = 'y';

Book b;

FILE *fp;

while(option == 'y' || option == 'Y') {

printgen();

scanw("%d",&c);

switch(c) {

case FICTION :

fp = fopen("Fiction.dat","rb+");

mvaddstr(13,32,"Enter book id : ");

scanw("%d",&id);

refresh();

while(fread(&b, sizeof(b), 1, fp) == 1) {

edit(&b, fp, id);

}

fclose(fp);

if(foundd == 0)

mvaddstr(15,32,"Record not found");

break;

case NONFICTION :

fp = fopen("Nonfiction.dat","rb+");

mvaddstr(13,32,"Enter book id : ");

scanw("%d",&id);

while(fread(&b, sizeof(b), 1, fp) == 1) {

edit(&b, fp, id);

}

fclose(fp);

if(foundd == 0)

mvaddstr(15,32,"Record not found");

break;

case REFERENCE :

fp = fopen("Reference.dat","rb");

mvaddstr(13,32,"Enter book id : ");

scanw("%d",&id);

while(fread(&b, sizeof(b), 1, fp) == 1) {

edit(&b, fp, id);

}

fclose(fp);

if(foundd == 0)

mvaddstr(15,32,"Record not found");

break;

case SELFHELP :

fp = fopen("Selfhelp.dat","rb");

mvaddstr(13,32,"Enter book id : ");

scanw("%d",&id);

while(fread(&b, sizeof(b), 1, fp) == 1) {

edit(&b, fp, id);

}

fclose(fp);

if(foundd == 0)

mvaddstr(15,32,"Record not found");

break;

case MENU :

mainmenu();

return ;

break;

}

mvaddstr(23,32,"Edit more? (y/n) ");

scanw("%c", &option);

}

mvaddstr(24,32,"Press ENTER to return to main menu");

getch();

refresh();

mainmenu();

}