BB4.16 Разбор задачи 1

RobertDeMilo

Jun 21st, 2024

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#include <iostream>
#include<string>
#include <vector>
using namespace std;
struct Trip
{
vector<HotelProvider::BookingId> hotels;
vector<FlightProvider::BookingId> flights;
};
class TripManager
{
public:
using BookingId = string;
struct BookingData
{
string city_from;
string city_to;
string date_from;
string date_to;
};
Trip Book(const BookingData& data)
{
Trip trip;
{
FlightProvider::BookingData data;
trip.flights.push_back(flight_provider.Book(data));
}
{
HotelProvider::BookingData data;
trip.hotels.push_back(hotel_provider.Book(data));
}
{
FlightProvider::BookingData data;
trip.flights.push_back(flight_provider.Book(data));
}
return trip;
}
void Cancel(Trip& trip)
{
for (auto& id : trip.hotels)
{
hotel_provider.Cancel(id);
}
trip.hotels.clear();
for (auto& id : trip.flights)
{
flight_provider.Cancel(id);
}
trip.flights.clear();
}
private:
HotelProvider hotel_provider;
FlightProvider flight_provider;
};
int main()
{
try
{
TripManager tm;
auto trip = tm.Book({});
tm.Cancel(trip);
}
catch (...)
{
cerr << "Exception\n";
}
}
****************************************************************************************************************************************************************************************************************************************
booking_managers.h
#pragma once
#include<iostream>
#include<string>
#include<vector>
using namespace std;
class FlightProvider
{
public:
using BookingId = int;
struct BookingData
{
string city_from;
string city_to;
string date;
};
BookingId Book(const BookingData& data)
{
++counter;
cerr << "Flight booking: " << counter << "\n";
return counter;
}
void Cancel(const BookingId& id)
{
--counter;
cerr << "Cancel flight: " << id << "\n";
}
private:
int counter = 0;
};
class HotelProvider
{
public:
using BookingId = int;
struct BookingData
{
string city;
string date_from;
string date_to;
};
BookingId Book(const BookingData& data)
{
++counter;
if (counter > 1)
{
throw runtime_error("Overbooking");
}
cerr << "Hotel booking: " << counter << "\n";
return counter;
}
void Cancel(const BookingId& id)
{
--counter;
cerr << "Cancel flight: " << id << "\n";
}
private:
int counter = 0;
};

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