#include<iostream>
#include<fstream>
#include<stdio.h>
#include<stdlib.h>
#include<string>
#include<conio.h>
using namespace std;
class hotel
{

	int room_no;
	char name[30];
	char phone[10];

	public:
	void main_menu();
	void add();
	void rooms();
	void modify();
	void delete_rez();
	int check(int);



};

void hotel::main_menu()
{
	int choice=0;
	while(choice!=5)
	{


		int choice;
        cout<<"\n\tMeniu\n";
        cout<<"1.Rezerva o camera.\n";
        cout<<"2.Modificati rezervarea.\n";
        cout<<"3.Camere ocupate\n";
        cout<<"4.Stergere rezervare\n";
        cout<<"5.Exit\n";
        cout<<"Intruduceti alegerea dumneavoastra.\n";
        cin>>choice;

		switch(choice)
		{
			case 1:	add();
            break;
			case 2: modify();
            break;
            case 3: rooms();
            break;
            case 4: delete_rez();
            break;
			case 5: exit(1);
			default:
				{
					cout<<"\nOptiune  incorecta\n";
					cout<<"Apasa tasta s pentru a continua!\n";
					getch();
				}
		}
	}
}

void hotel::add()
{

	int r,flag;
	ofstream fout("Record.dat",ios::app);

	cout<<"Detalii client:\n";
	cout<<"***************\n";

	cout<<"Numarul camerei: \n";
	cin>>r;
	flag=check(r);

	if(flag)
		cout<<"Camere deja ocupata\n";

	else
	{
		room_no=r;
		cout<<endl;
		cout<<"Nume:";
		cin>>name;
		cout<<endl;
		cout<<"Telefon:";
		cin>>phone;
		fout.write((char*)this,sizeof(hotel));
		cout<<"Ati rezervat camera. \n";
	}

	cout<<" Apasa tasta s pentru a continua!\n";
	getch();
	fout.close();
}



int hotel::check(int r)
{
	int flag=0;
	ifstream fin("Record.dat",ios::in);
	while(!fin.eof())
	{
		fin.read((char*)this,sizeof(hotel));
		if(room_no==r)
		{
			flag=1;
			break;
		}
	}

	fin.close();
	return(flag);
}


void hotel::modify()
{
    long pos, flag=0;
    int r;
    cout<<"Numarul camerei:";
    cin>>r;
    cout<<endl;
    fstream file("Record.dat",ios::in|ios::out|ios::binary);
    while(!file.eof())
    {
        pos=file.tellg();
        file.read((char*)this,sizeof(hotel));
        if(room_no==r)
        {
            cout<<"\nIntroduceti noi detalii:";
            cout<<endl;
            cout<<"**************************\n";
            cout<<"Nume:";
            cin>>name;
            cout<<"Telefon:";
            cin>>phone;
            file.seekg(pos);
            file.write((char*)this,sizeof(hotel));
            cout<<"Date modificate";
            flag=1;
            break;

        }
    }

    if(flag==0)
        cout<<"Aceasta camera este ocupata";
    file.close();
}

void hotel::rooms()
{
    ifstream file("Record.dat",ios::in);
    cout<<"\nCamere rezervate:";
    cout<<"\n****************\n";
    while(!file.eof())
    {
        file.read((char*)this,sizeof(hotel));
        cout<<"\n Camera:  "<<room_no<<"\n Name: "<<name;
        cout<<"\n Telefon: "<<phone;

    }

    cout<<"\n Apasa s pentru a continua!";
    getch();
    file.close();


}

void hotel:: delete_rez()
{
   	int flag=0;
	char ch;
	int r;
	cout<<"Numar camera:";
	cin>>r;
	ifstream fin("Record.dat",ios::in);
	ofstream fout("temp.dat",ios::out);
	while(!fin.eof())
	{
		fin.read((char*)this,sizeof(hotel));
		if(room_no==r)
		{
			cout<<"\n Nume: "<<name;
			cout<<"\n Telefon: "<<phone;
			cout<<"\n\n Do you want to delete this record(y/n): ";
			cin>>ch;

			if(ch=='n')
				fout.write((char*)this,sizeof(hotel));
			flag=1;
		}
		else
			fout.write((char*)this,sizeof(hotel));
	}

	fin.close();
	fout.close();
	if(flag==0)
		cout<<"\n Camera nu este rezervata.";
	else
	{
		remove("Record.dat");
		rename("temp.dat","Record.dat");
	}
}

int main()
{
	hotel h;


	h.main_menu();
	return 0;
}