bbltk

#include <stdio.h>
#include <cstdlib>
#include <fstream>
#include <iostream>
#include <string>
#define SIZE 10

using namespace std;

struct Date{
    int day, month, year;
};

struct Book{
    int bookID;
    string bookName;
    int rentID;
};

struct Rent{
    int rentID;
    Date startDate;
    Date endDate;
    int customerID;
    int bookID;
};

struct Customer{
    int customerID;
    string name;
    string surname;
};


/*
struct LogFile{
    int accountID;
    int typeOfOperation;
    float amountOfMoney;
    Date date;
};

*/

bool searchForCustomer(int id);
void createCustomer();
bool searchForRent(int id);
void createRent();
bool searchForBook(int id);
void showCustomerRents();
void returnBook();
void menu();

int main()
{

    menu();
}

void menu()
{


    int choice;

    while(1)
    {
        cout << "Enter your choice" << endl;
        cout << "To make a new customer, press 1" << endl;
        cout << "To make a new rent, press 2" << endl;
        cout << "To return a book, press 3" << endl;
        cout << "To show rents by customer, press 4" << endl;
        //cout << "To print log file, press 6" << endl;
        cout << "To exit a program, press -1" << endl << endl;

        cin >> choice;

        if(choice == -1)
           {
                break;
           }
        switch(choice)
        {
            case 1: createCustomer(); break;
            case 2: createRent(); break;
            case 3: returnBook();break;
            case 4: showCustomerRents();break;
           // case 5: showBookRents();break;
           // case 6: printLogFile();break;

            default: cout << "You entered a wrong value, try again";
            cin >> choice;
        }
    }


}

void createCustomer()
{
    Customer cust;
    int id;

    cout << "Please enter a new ID of your customer: ";cin >> id;

    while(1)
    {
        if(searchForCustomer(id) == false)
        {
            ofstream customersout;
            customersout.open("customers.txt", ofstream::app);
            if(customersout.fail())
            {
                cout << "Customers out file error.";
                exit(1);
            }
            cust.customerID = id;
            cout << "Enter a new name: ";
            cin >> cust.name;
            cout << "Enter a new surname: ";
            cin >> cust.surname;

            customersout << cust.customerID << " " << cust.name << " " << cust.surname << endl;
            customersout.close();
            break;
        }

        else
        {
            cout << "ID exists. Try again: "; cin >> id;
        }
    }

}

bool searchForCustomer(int id)
{
    Customer cust;

    ifstream customersin;
    customersin.open("customers.txt");
    if(customersin.fail())
    {
        cout << "Customers in file error.";
        exit(1);
    }


    while(!customersin.eof())
    {
        customersin >> cust.customerID;
        customersin >> cust.name;
        customersin >> cust.surname;

        if(id == cust.customerID)
        {
            customersin.close();
            return true;
        }
    }

    customersin.close();
    return false;

}

void createRent()
{
    Rent rnt;

    int custID, rentID, bookID;
    cout << "Please enter customer ID you want to make rent for: "; cin >> custID;

    while(1)
    {
        if(searchForCustomer(custID) == true)
        {
            cout << "Enter your rent ID: "; cin >> rentID;
            while(1)
            {
                if(searchForRent(rentID) == false)
                {
                    rnt.customerID = custID;
                    rnt.rentID = rentID;

                    cout << "Enter starting day, month and year of rent: ";
                    cin >> rnt.startDate.day >> rnt.startDate.month >> rnt.startDate.year;

                    cout << "Enter ending day, month and year of rent: ";
                    cin >> rnt.endDate.day >> rnt.endDate.month >> rnt.endDate.year;

                    cout << "Enter a book ID you want to rent: "; cin>>bookID;
                    while(1)
                    {
                        if(searchForBook(bookID)==true)
                        {
                            if(rentStatus(bookID)==true) {
                                rnt.bookID=bookID;
                            }
                            else
                            {
                                cout<<"This book is already rented. Try another: "; cin>> bookID;
                            }
                            break;
                        }
                        else {
                            cout << "This book ID doesn't exist. Try another: "; cin>>bookID;
                        }
                    }


                    ofstream rentsout;
                    rentsout.open("rents.txt", ofstream::app);
                    string s, e;
                    s=rnt.startDate.day+"/"+rnt.startDate.month+"/"+rnt.startDate.year;
                    e=rnt.endDate.day+"/"+rnt.endDate.month+"/"+rnt.endDate.year;
                    rentsout << rnt.rentID << " " << s<<" " <<e << " " << rnt.customerID <<" "<<rnt.bookID<< endl;
                    rentsout.close();

                    break;
                }

                else
                {
                    cout << "Rent ID already exists. Try again: "; cin >> accID;
                }

            }

            break;
        }

        else
        {
            cout << "Customer ID doesn't exist. Try again: "; cin >> custID;
        }
    }

}

bool searchForRent(int id)
{
    Rent rnt;
    string startD;
    string endD;

    ifstream rentin;
    rentin.open("rents.txt");
    if(rentin.fail())
    {
        cout << "Rents in file error.";
        exit(1);
    }


    while(!rentin.eof())
    {
        rentin >> rnt.rentID;

        rentin >> startD;
        rnt.startDate.day=startD.substr(0,2);
        rnt.startDate.month=startD.substr(3,2);
        rnt.startDate.year=startD.substr(6,4);

        rentin >> endD;
        rnt.endDate.day=endD.substr(0,2);
        rnt.endDate.month=endD.substr(3,2);
        rnt.endDate.year=endD.substr(6,4);

        rentin >> rnt.customerID;
        rentin >> rnt.bookID;

        if(id == rnt.rentID)
        {
            rentin.close();
            return true;
        }
    }

    rentin.close();
    return false;

}

bool searchForBook(int id) {
    Book book;


    ifstream bookin;
    bookin.open("books.txt");
    if(bookin.fail())
    {
        cout << "Books in file error.";
        exit(1);
    }


    while(!bookin.eof())
    {
        bookin >> book.bookID;
        bookin >> book.bookName;
        bookin >> book.rentID;

        if(id == book.bookID)
        {
            bookin.close();
            return false;
        }
    }

    bookin.close();
    return true;
}

bool rentStatus(int id) {
    Book book;


    ifstream bookin;
    bookin.open("books.txt");
    if(bookin.fail())
    {
        cout << "Books in file error.";
        exit(1);
    }


    while(!bookin.eof())
    {
        bookin >> book.bookID;
        bookin >> book.bookName;
        bookin >> book.rentID;

        if(id == book.bookID)
        {
            if(book.rentID==-1) {
                bookin.close();
                return true;
            }
            else {
                bookin.close();
                return false;
            }

        }
    }
    //never gets here cuz program logic
    bookin.close();
    return true;
}

void returnBook(){
    int customerID;
    int bookID;
    int rentID;
    Rent rnt;
    Book book;

    cout<< "Enter customer ID that is returning book: "; cin >> customerID;
    while(1) {
        if(searchForCustomer(customerID)==true) {
            cout<<"Enter book ID customer wants to return: "; cin>>bookID;

            ifstream rentin("rents.txt");
            if(rentin.fail())
            {
                cout << "Rents in file error.";
                exit(1);
            }

            ofstream tempRentsOut("temprents.txt");

            if(tempRentsOut.fail())
            {
                cout << "Temp rents file error.";
                exit(1);
            }
            while(1)
            {


                rentin >> rnt.rentID;

                rentin >> startD;
                rnt.startDate.day=startD.substr(0,2);
                rnt.startDate.month=startD.substr(3,2);
                rnt.startDate.year=startD.substr(6,4);

                rentin >> endD;
                rnt.endDate.day=endD.substr(0,2);
                rnt.endDate.month=endD.substr(3,2);
                rnt.endDate.year=endD.substr(6,4);

                rentin >> rnt.customerID;
                rentin >> rnt.bookID;

                if( rentin.eof() )
                    break;


                if(customerID == rnt.customerID)
                {
                    rentID=rnt.rentID;
                    /*ofstream logFileOut("logfile.txt", ofstream::app);
                    if(logFileOut.fail())
                    {
                        cout << "Log file error.";
                        exit(1);
                    }
                    log.accountID = accID;
                    log.amountOfMoney = deposit;
                    log.typeOfOperation = 1; // 1 means deposit, 2 means withdrawal

                    cout << "Enter day, month and year of transaction: ";
                    cin >> log.date.day >> log.date.month >> log.date.year;

                    logFileOut << log.accountID << " " << log.typeOfOperation << " " << log.amountOfMoney << " "
                    << log.date.day << " " << log.date.month << " " << log.date.year << endl;

                    logFileOut.close(); */
                }

                else
                {
                    string s, e;
                    s=rnt.startDate.day+"/"+rnt.startDate.month+"/"+rnt.startDate.year;
                    e=rnt.endDate.day+"/"+rnt.endDate.month+"/"+rnt.endDate.year;
                    tempRentsOut << rnt.rentID << " " << s<<" " <<e << " " << rnt.customerID <<" "<<rnt.bookID<< endl;
                }
            }

            tempRentsOut.close();
            rentin.close();

            ifstream bookin("books.txt");
            if(bookin.fail())
            {
                cout << "Books in file error.";
                exit(1);
            }

            ofstream tempBooksOut("tempbooks.txt");

            if(tempBooksOut.fail())
            {
                cout << "Temp books file error.";
                exit(1);
            }
            while(1)
            {


                bookin >> book.bookID;
                bookin >> book.bookName;
                bookin >> book.rentID;

                if( bookin.eof() )
                    break;


                if(rentID == book.rentID)
                {
                    book.rentID=-1;
                    tempBooksOut<<book.bookID<<" "<<book.bookName<<" "<<book.rentID<<endl;
                    /*ofstream logFileOut("logfile.txt", ofstream::app);
                    if(logFileOut.fail())
                    {
                        cout << "Log file error.";
                        exit(1);
                    }
                    log.accountID = accID;
                    log.amountOfMoney = deposit;
                    log.typeOfOperation = 1; // 1 means deposit, 2 means withdrawal

                    cout << "Enter day, month and year of transaction: ";
                    cin >> log.date.day >> log.date.month >> log.date.year;

                    logFileOut << log.accountID << " " << log.typeOfOperation << " " << log.amountOfMoney << " "
                    << log.date.day << " " << log.date.month << " " << log.date.year << endl;

                    logFileOut.close(); */
                }

                else
                {
                    tempBooksOut<<book.bookID<<" "<<book.bookName<<" "<<book.rentID<<endl;
                }
            }

            tempBooksOut.close();
            bookin.close();

            break;
        }
        else {
            cout<<"Customer ID doesn't exist, try again: "; cin >>customerID;
        }
    }
}

void showCustomerRents(){
    int custID;
    Rent rnt;
    string startD;
    string endD;

    cout<<"Enter customer ID whose rents you want to show: "; cin>>custID;

    ifstream rentin;
    rentin.open("rents.txt");
    if(rentin.fail())
    {
        cout << "Rents in file error.";
        exit(1);
    }


    while(!rentin.eof())
    {
        rentin >> rnt.rentID;

        rentin >> startD;
        rnt.startDate.day=startD.substr(0,2);
        rnt.startDate.month=startD.substr(3,2);
        rnt.startDate.year=startD.substr(6,4);

        rentin >> endD;
        rnt.endDate.day=endD.substr(0,2);
        rnt.endDate.month=endD.substr(3,2);
        rnt.endDate.year=endD.substr(6,4);

        rentin >> rnt.customerID;
        rentin >> rnt.bookID;

        if(custID == rnt.customerID)
        {
            cout<< rnt.rentID<<" "<<startD<<" "<<endD<<" "<< rnt.bookID;
            rentin.close();
            return true;
        }
    }

    rentin.close();
    return false;
}

/*



void printLogFile()
{
    LogFile log;
    ifstream logFileIn("logfile.txt");
    if(logFileIn.fail())
    {
        cout << "Log file error.";
        exit(1);
    }

    cout << endl << endl;

    while(1)
    {
        logFileIn >> log.accountID;
        logFileIn >> log.typeOfOperation;
        logFileIn >> log.amountOfMoney;
        logFileIn >> log.date.day;
        logFileIn >> log.date.month;
        logFileIn >> log.date.year;

        if(logFileIn.eof())
            break;
        cout << "Account ID:\t\t" << log.accountID << endl;
        cout << "Type of operation:\t";
        if(log.typeOfOperation == 1)
            cout << "Deposit" << endl;
        else
            cout << "Withdrawal" << endl;
        cout << "Amount:\t\t\t" << log.amountOfMoney << endl;
        cout << "Date:\t\t\t" << log.date.day << "-" << log.date.month << "-" << log.date.year << endl;
        cout << "-------------------" << endl;
    }

    cout << endl << endl << endl;
    logFileIn.close();
} */