#pragma once

#include <cstring>
#include <netdb.h>

#include "network_error.hpp"
#include "utils/underlying_cast.hpp"

namespace io
{

class AddrInfo
{
    AddrInfo(struct addrinfo* info) : info(info) {}

public:
    ~AddrInfo()
    {
        freeaddrinfo(info);
    }

    static AddrInfo get(const char* addr, const char* port)
    {
        struct addrinfo hints;
        memset(&hints, 0, sizeof(struct addrinfo));

        hints.ai_family = AF_UNSPEC;     // IPv4 and IPv6
        hints.ai_socktype = SOCK_STREAM; // TCP socket
        hints.ai_flags = AI_PASSIVE;

        struct addrinfo* result;
        auto status = getaddrinfo(addr, port, &hints, &result);

        if(status != 0)
            throw NetworkError(gai_strerror(status));

        return AddrInfo(result);
    }

    operator struct addrinfo*() { return info; }

private:
    struct addrinfo* info;
};

}