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grocery_store.cpp
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/*********************************************************************************
* *
* Code by : Group A *
* @author: Ankit Dimri *
* Code : Main grocery stoe interface *
* *
*********************************************************************************/
/*
* Grocery store management using object oreiented programming paradigms
*/
#include <iostream>
#include <fstream>
#include <termios.h>
#include <unistd.h>
/* Include clerk class */
#include "clerk.h"
/* Include customer class */
#include "customer.h"
void customer_acces ();
void clerk_acces ();
int getch();
string getpass(const char*, bool);
using namespace std;
int main(int argc, char const *argv[]) {
int acc;
/* infinite loop */
do { // Menu driven program
system ("clear");
std::cout << "\n\n\t\t\t Access Menu";
std::cout << "\n\n\t 1. Customer";
std::cout << "\n\t 2. Clerk";
std::cout << "\n\t 3. Exit";
std::cout << "\n\n\t Enter the choice : ";
std::cin >> acc;
switch (acc) {
case 1 : customer_acces (); // call customer function
break;
case 2 : clerk_acces (); // call clerk function
break;
case 3 : exit (0); // end process
default : std::cout << "\n\t Wrong Choice!!" << '\n';
/* Wait for interrupt */
cin.ignore ();
getchar ();
}
} while (1);
return 0;
}
/* Customer function */
void customer_acces () {
int option;
fstream item, cart;
customer cstmr;
do {
system ("clear");
std::cout << "\n\n\n\t\t\t\t Welcome to ABC grocery store : customer";
std::cout << "\n\n\t\t Menu";
/* options */
std::cout << "\n\n\t 1. Display item list";
std::cout << "\n\t 2. Add item to cart";
std::cout << "\n\t 3. Delete item from cart";
std::cout << "\n\t 4. Display cart";
std::cout << "\n\t 5. Bill";
std::cout << "\n\t 6. Exit";
std::cout << "\n\n\t Enter choice : ";
std::cin >> option;
switch (option) {
case 1 : item.open ("/home/ankit/Desktop/c++ project/items.dat", ios::in | ios::binary);
if (item.fail ()) {
std::cout << "\n\n\t File does not exist" << '\n';
std::cin.ignore ();
getchar ();
break;
}
item.seekg (0);
system ("clear");
std::cout << "\t======================================================================" << std::endl;
std::cout << "\t\t" << std::setw (10) << "Item Code" << " ";
std::cout << std::setw (20) << "Item Name" << " ";
std::cout << std::setw (10) << "Item Price";
std::cout << std::endl << "\t======================================================================";
while (1) {
item.read ((char*) &cstmr, sizeof (cstmr));
if (item.eof ())
break;
cstmr.display_catalog ();
}
item.close ();
std::cin.ignore ();
getchar ();
break;
case 2 :{
cart.open("/home/ankit/Desktop/c++ project/cart.txt", ios::out | ios::app);
if (cart.fail ()) {
std::cout << "\n\n\t Cart does not exist" << '\n';
std::cin.ignore ();
getchar ();
break;
}
system ("clear");
char ans = 'y';
int flag = 0;
char cd [10];
int qty;
do {
item.open ("/home/ankit/Desktop/c++ project/items.dat", ios::in | ios::binary);
if (item.fail ()) {
std::cout << "\n\n\t file does not exist" << '\n';
std::cin.ignore ();
getchar ();
break;
}
flag = 0;
system ("clear");
cout<<"\n\n\t Enter the Code of the item : ";
cin>>cd;
item.seekg (0);
while (1) {
item.read((char*) &cstmr, sizeof(cstmr));
if (item.eof ())
break;
if(!std::strcmp (cstmr.get_code(), cd)) {
flag++;
std::cout << "\t======================================================================" << std::endl;
std::cout << "\t\t" << std::setw (10) << "Item Code" << " ";
std::cout << std::setw (20) << "Item Name" << " ";
std::cout << std::setw (10) << "Item Price";
std::cout << std::endl << "\t======================================================================";
cstmr.display_catalog ();
std::cout << "\n\n\t Enter the quantity needed : ";
cin >> qty;
while (cstmr.get_quantity () < qty) {
std::cout << "\n\n\t The quantity entered is not possible" << '\n';
std::cout << "\tMax possible quantity is : " << cstmr.get_quantity () << '\n';
std::cout << "\tEnter new quantity : ";
std::cin >> qty;
}
cstmr.set_quantity(qty);
if (qty > 0) {
cart.write((char*) &cstmr, sizeof(cstmr));
std::cout << "\n\t Item added" << '\n';
cin.ignore ();
getchar ();
}
}
}
if (!flag) {
std::cout << "\n\t Item with that code does not exist" << '\n';
}
flag= 0;
std::cout << "\n\t Do you wanna add more items? (Y/N) : ";
std::cin >> ans;
item.close();
} while (ans == 'y' || ans == 'Y');
cart.close();
break;
}
case 3 :{ char cd [10];
char found='f',confirm='n';
cart.open("/home/ankit/Desktop/c++ project/cart.txt", ios::in);
if (cart.fail ()) {
std::cout << "\n\n\t cart does not exist" << '\n';
std::cin.ignore ();
getchar ();
break;
}
ofstream fout;
fout.open("/home/ankit/Desktop/c++ project/temp.txt",ios::out);
cout<<"\n\n\t Enter the code of the item you want to be deleted : ";
cin>>cd;
while(1) {
cart.read((char*)&cstmr,sizeof(cstmr));
if (cart.eof ())
break;
if(!std::strcmp (cstmr.get_code(), cd)) {
found='t';
std::cout << "\t======================================================================" << std::endl;
std::cout << "\t\t" << std::setw (10) << "Item Code" << " ";
std::cout << std::setw (20) << "Item Name" << " ";
std::cout << std::setw (10) << "Item Price";
std::cout << std::endl << "\t======================================================================";
cstmr.display_catalog ();
cout<<"\n\n\t Are you sure you want to delete this item? [y/n] : ";
cin>>confirm;
if(confirm=='n')
fout.write((char*)&cstmr,sizeof(cstmr));
}
else
fout.write((char*)&cstmr,sizeof(cstmr));
}
if(found=='f')
cout<<"\n\n\t Item not found";
cart.close();
fout.close();
remove("/home/ankit/Desktop/c++ project/cart.txt");
rename("/home/ankit/Desktop/c++ project/temp.txt","/home/ankit/Desktop/c++ project/cart.txt");
std::cin.ignore ();
getchar ();
break;
}
case 4 : cart.open("/home/ankit/Desktop/c++ project/cart.txt", ios::in);
if (cart.fail ()) {
std::cout << "\n\n\t Cart does not exist" << '\n';
std::cin.ignore ();
getchar ();
break;
}
cart.seekg (0);
system ("clear");
std::cout << "\n\n\t\t\t CART" << '\n';
std::cout << "\t======================================================================" << std::endl;
std::cout << "\t\t" << std::setw (10) << "Item Code" << " ";
std::cout << std::setw (20) << "Item Name" << " ";
std::cout << std::setw (10) << "Item Price" << " ";
std::cout << std::setw (10) << "Quantity" << '\n';
std::cout << std::endl << "\t======================================================================";
while(1) {
cart.read((char*) &cstmr, sizeof(cstmr));
if (cart.eof ())
break;
cstmr.display_catalog ();
std::cout << " " << std::setw (10) << cstmr.get_quantity ();
}
cart.close();
std::cin.ignore ();
getchar ();
break;
case 5 :{ float sum = 0;
item.open ("/home/ankit/Desktop/c++ project/items.dat", ios::in | ios::binary | ios::out | ios::ate);
if (item.fail ()) {
std::cout << "\n\n\t File does not exist" << '\n';
std::cin.ignore ();
getchar ();
break;
}
cart.open("/home/ankit/Desktop/c++ project/cart.txt", ios::in);
if (cart.fail ()) {
std::cout << "\n\n\t Cart does not exist" << '\n';
std::cin.ignore ();
item.close ();
getchar ();
break;
}
system ("clear");
clerk clrk;
cart.seekg (0);
std::cout << "\t======================================================================" << std::endl;
std::cout << "\t\t" << std::setw (10) << "Item Code" << " ";
std::cout << std::setw (20) << "Item Name" << " ";
std::cout << std::setw (10) << "Item Price" << " ";
std::cout << std::setw (10) << "Quantity" << '\n';
std::cout << std::endl << "\t======================================================================";
while(1) {
cart.read((char*)&cstmr,sizeof(cstmr));
if (cart.eof ())
break;
cstmr.display_catalog ();
std::cout << " " << std::setw (10) << cstmr.get_quantity ();
item.seekg (0);
while (1) {
item.read ((char*) &clrk, sizeof (clrk));
if (item.eof ())
break;
if (!std::strcmp (clrk.get_code (), cstmr.get_code ())) {
clrk.set_quantity (clrk.get_quantity () - cstmr.get_quantity ());
item.seekp (-sizeof (clrk), ios::cur);
item.write ((char*) &clrk, sizeof (clrk));
break;
}
}
sum+=(cstmr.get_price() * cstmr.get_quantity ());
}
cout<<"\n\n\t The total amount is $ " << sum;
std::cin.ignore ();
getchar ();
cart.close ();
item.close ();
remove ("/home/ankit/Desktop/c++ project/cart.txt");
break;
}
case 6 : remove ("/home/ankit/Desktop/c++ project/cart.txt");
return;
default : std::cout << "\n\t Wrong choice!" << '\n';
std::cin.ignore ();
getchar ();
}
} while (1);
}
/* Clerk Function */
void clerk_acces () {
const char *correct_password = "groupa";
char* buf;
std::cout << std::endl;
string password = getpass("Please enter the password: ",true);
if (password != correct_password) {
std::cout << "\n\n\t Wrong Password" << '\n';
std::cin.ignore ();
getchar ();
return;
}
int option;
clerk clrk;
char code [10], name [20], ans;
float price;
int quantity;
int size, flag = 0, pos;
fstream item;
item.open ("/home/ankit/Desktop/c++ project/items.dat", ios::in | ios::binary | ios::out | ios::app);
item.close ();
do {
system ("clear");
std::cout << "\n\n\n\t\t\t\t Welcome to ABC grocery store : Admin Access ";
std::cout << "\n\n\t\t Menu";
std::cout << "\n\n\t 1. Display item list";
std::cout << "\n\t 2. Add items";
std::cout << "\n\t 3. Delete item";
std::cout << "\n\t 4. Modify item";
std::cout << "\n\t 5. Exit";
std::cout << "\n\n\t Enter the choice : ";
std::cin >> option;
switch (option) {
case 1 : item.open ("/home/ankit/Desktop/c++ project/items.dat", ios::in | ios::binary);
if (item.fail ()) {
std::cout << "\nfile couldn't open ";
std::cin.ignore ();
getchar ();
break;
}
item.seekg (0, ios::beg);
system ("clear");
std::cout << "\t======================================================================" << std::endl;
std::cout << "\t\t" << std::setw (10) << "Item Code" << " ";
std::cout << std::setw (20) << "Item Name" << " ";
std::cout << std::setw (10) << "Item Price" << " ";
std::cout << std::setw (10) << "Quantity";
std::cout << std::endl << "\t======================================================================";
while (1) {
item.read ((char*) &clrk, sizeof (clrk));
if (item.eof ())
break;
clrk.display_item ();
}
item.close ();
std::cin.ignore ();
getchar ();
break;
case 2 : flag = 0;
item.open ("/home/ankit/Desktop/c++ project/items.dat", ios::in | ios::binary);
if (item.fail ()) {
std::cout << "\n\t File couldn't open";
std::cin.ignore ();
getchar ();
break;
}
system ("clear");
item.seekg (0, ios::beg);
cout<<"\n\n\tPlease Enter the Item Code : ";
cin >>code;
while (1) {
item.read ((char*) &clrk, sizeof (clrk));
if (item.eof ())
break;
if (!std::strcmp (clrk.get_code (), code))
flag++;
}
if (flag != 0) {
std::cout << "\n\n\t Entered code already exists" << '\n';
item.close ();
std::cin.ignore ();
getchar ();
break;
}
item.close ();
cout<<"\n\tPlease Enter The Item Name : ";
cin >>name;
cout<<"\n\tPlease Enter The Item Price : ";
cin>>price;
cout<<"\n\tPlease Enter The Item Quantity : ";
cin>>quantity;
clrk.set_code (code);
clrk.set_name (name);
clrk.set_price (price);
clrk.set_quantity (quantity);
item.open ("/home/ankit/Desktop/c++ project/items.dat", ios::binary | ios::out | ios::app);
item.write ((char*) &clrk, sizeof (clrk));
std::cout << "\n\t written in file" << '\n';
item.close ();
std::cin.ignore ();
getchar ();
break;
case 3 :{
item.open ("/home/ankit/Desktop/c++ project/items.dat", ios::in | ios::binary);
ofstream file;
int check = 0;
file.open ("/home/ankit/Desktop/c++ project/temp.dat", ios::out | ios::binary | ios::app);
if (item.fail ()) {
std::cout << "\n\n\t File does not exist" << '\n';
file.close ();
remove ("/home/ankit/Desktop/c++ project/temp.dat");
std::cin.ignore ();
getchar ();
break;
}
system ("clear");
std::cout << "\n\n\t Enter the code of item which you wanna delete : ";
std::cin >> code;
item.seekg (0);
while (1) {
flag = 0;
item.read ((char*) &clrk, sizeof (clrk));
if (item.eof ())
break;
if (!std::strcmp (clrk.get_code (), code)) {
std::cout << "\t======================================================================" << std::endl;
std::cout << "\t\t" << std::setw (10) << "Item Code" << " ";
std::cout << std::setw (20) << "Item Name" << " ";
std::cout << std::setw (10) << "Item Price" << " ";
std::cout << std::setw (10) << "Quantity";
std::cout << std::endl << "\t======================================================================";
clrk.display_item ();
std::cout << "\n\n\t Do you wanna delete it ? (y/n) : ";
std::cin >> ans;
if (ans == 'y' || ans == 'Y') {
std::cout << "\n\n\tDeleted" << '\n';
flag++;
}
check++;
}
if (!flag)
file.write ((char*) &clrk, sizeof (clrk));
}
if (!check)
std::cout << "\n\t Item does not exist" << '\n';
item.close ();
file.close ();
remove ("/home/ankit/Desktop/c++ project/items.dat");
rename ("/home/ankit/Desktop/c++ project/temp.dat", "/home/ankit/Desktop/c++ project/items.dat");
std::cin.ignore ();
getchar ();
break;
}
case 4 : item.open ("/home/ankit/Desktop/c++ project/items.dat", ios::in | ios::binary | ios::out | ios::ate);
if (item.fail ()) {
std::cout << "\n\n\t File does not exist" << '\n';
std::cin.ignore ();
getchar ();
break;
}
system ("clear");
std::cout << "\n\n\t Enter the code of item you wanna modify : ";
std::cin >> code;
flag = 0;
item.seekg (0);
while (1) {
pos = item.tellg ();
item.read ((char*) &clrk, sizeof (clrk));
if (item.eof ())
break;
if (!std::strcmp (clrk.get_code (), code)) {
std::cout << "\t======================================================================" << std::endl;
std::cout << "\t\t" << std::setw (10) << "Item Code" << " ";
std::cout << std::setw (20) << "Item Name" << " ";
std::cout << std::setw (10) << "Item Price" << " ";
std::cout << std::setw (10) << "Quantity";
std::cout << std::endl << "\t======================================================================";
clrk.display_item ();
std::cout << "\n\n\t Enter modified details : " << '\n';
std::cout << "\n Enter modified code : ";
std::cin >> code;
std::cout << "\n Enter modified name : ";
std::cin >> name;
std::cout << "\n Enter the modified price : ";
std::cin >> price;
std::cout << "\n Enter the modified quantity : ";
std::cin >> quantity;
flag++;
break;
}
}
if (flag == 0) {
std::cout << "\n\t Item does not exist" << '\n';
item.close ();
std::cin.ignore ();
getchar ();
break;
}
item.seekp (pos);
clrk.set_code (code);
clrk.set_name (name);
clrk.set_price (price);
clrk.set_quantity (quantity);
item.write ((char*) &clrk, sizeof (clrk));
system ("clear");
std::cout << "\n\n\t After modification" << '\n';
std::cout << "\t======================================================================" << std::endl;
std::cout << "\t\t" << std::setw (10) << "Item Code" << " ";
std::cout << std::setw (20) << "Item Name" << " ";
std::cout << std::setw (10) << "Item Price" << " ";
std::cout << std::setw (10) << "Quantity";
std::cout << std::endl << "\t======================================================================";
clrk.display_item ();
item.close ();
std::cin.ignore ();
getchar ();
break;
case 5 : return;
default : std::cout << "\n\t Wrong choice!! " << '\n';
std::cin.ignore ();
getchar ();
}
} while (1);
}
/*
* To get the password in terminal.
* The password is not visible on the terminal
* works on bash terminal
*/
int getch() {
int ch;
struct termios t_old, t_new;
tcgetattr(STDIN_FILENO, &t_old);
t_new = t_old;
t_new.c_lflag &= ~(ICANON | ECHO);
tcsetattr(STDIN_FILENO, TCSANOW, &t_new);
ch = getchar();
tcsetattr(STDIN_FILENO, TCSANOW, &t_old);
return ch;
}
string getpass(const char *prompt, bool show_asterisk = true) {
const char BACKSPACE = 127;
const char RETURN = 10;
string password;
unsigned char ch=0;
cout << prompt;
while((ch = getch()) != RETURN) {
if(ch == BACKSPACE) {
if(password.length()!=0) {
if(show_asterisk)
cout <<"\b \b";
password.resize(password.length()-1);
}
}
else {
password += ch;
if(show_asterisk)
cout << '*';
}
}
cout << endl;
return password;
}