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// Copyright 2017 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.

#pragma once

#include <memory>
#include <string>
#include <vector>
#include "common/common_types.h"
#include "network/room.h"

namespace Network {

/**
 * This is what a client [person joining a server] would use.
 * It also has to be used if you host a game yourself (You'd create both, a Room and a
 * RoomMembership for yourself)
 */
class RoomMember final {
public:
    enum class State : u8 {
        Idle,    ///< Default state
        Error,   ///< Some error [permissions to network device missing or something]
        Joining, ///< The client is attempting to join a room.
        Joined,  ///< The client is connected to the room and is ready to send/receive packets.
        LostConnection, ///< Connection closed

        // Reasons why connection was rejected
        NameCollision,  ///< Somebody is already using this name
        MacCollision,   ///< Somebody is already using that mac-address
        CouldNotConnect ///< The room is not responding to a connection attempt
    };

    struct MemberInformation {
        std::string nickname;   ///< Nickname of the member.
        std::string game_name;  ///< Name of the game they're currently playing, or empty if they're
                                /// not playing anything.
        MacAddress mac_address; ///< MAC address associated with this member.
    };
    using MemberList = std::vector<MemberInformation>;

    RoomMember();
    ~RoomMember();

    /**
     * Returns the status of our connection to the room.
     */
    State GetState() const;

    /**
     * Returns information about the members in the room we're currently connected to.
     */
    const MemberList& GetMemberInformation() const;
    /**
     * Returns information about the room we're currently connected to.
     */
    RoomInformation GetRoomInformation() const;

    /**
     * Returns whether we're connected to a server or not.
     */
    bool IsConnected() const;

    /**
     * Attempts to join a room at the specified address and port, using the specified nickname.
     * This may fail if the username is already taken.
     */
    void Join(const std::string& nickname, const char* server_addr = "127.0.0.1",
              const u16 serverPort = DefaultRoomPort, const u16 clientPort = 0);

    /**
     * Leaves the current room.
     */
    void Leave();

private:
    class RoomMemberImpl;
    std::unique_ptr<RoomMemberImpl> room_member_impl;
};

} // namespace Network