NP_Midterm/include/Packet/Packet.hpp

#pragma once
#include "Utils/Snowflake.hpp"

#include "precomp.hpp"

namespace Chattr {

enum class PacketType : std::uint8_t {
    PACKET_POST,
    PACKET_REQUEST,
    PACKET_RESPONSE,
    PACKET_CONTINUE,
};

enum class RequestType : std::uint8_t {
    LOGIN,
    ROOM_CREATE,
    ROOM_LIST,
    ROOM_JOIN,
    ROOM_EXIT,
    USERS_LIST,
    DATA
};

enum class DataType : std::uint8_t {
    TEXT,
    BINARY
};

class alignas(1) Packet {
public:
    union {
        struct {
            PacketType          packetType;
            RequestType         requestType;
            DataType            dataType;
            std::uint16_t       packetLength;
            std::uint8_t        data[1495];
        } __data;
        std::uint8_t serialized[1500];
    };
    std::uint8_t* convToN() {
        __data.packetLength = ::htons(__data.packetLength);
        return serialized;
    }
    std::uint8_t* convToH() {
        __data.packetLength = ::ntohs(__data.packetLength);
        return serialized;
    }
};

class alignas(1) LoginRequestPacket : public Packet {
public:
    union {
        struct {
            PacketType          packetType;
            RequestType         requestType;
            DataType            dataType;
            std::uint16_t       packetLength;
            std::uint8_t        name[];
        } __data;
        std::uint8_t serialized[1500];
    };
};

class alignas(1) RoomCreateRequestPacket : public Packet {
public:
    union {
        struct {
            PacketType          packetType;
            RequestType         requestType;
            DataType            dataType;
            std::uint16_t       packetLength;
            std::uint8_t        name[];
        } __data;
        std::uint8_t serialized[1500];
    };
};

class alignas(1) RoomListRequestPacket : public Packet {
public:
    union {
        struct {
            PacketType          packetType;
            RequestType         requestType;
            DataType            dataType;
            std::uint16_t       packetLength;
            std::uint32_t       roomCount;
            std::uint8_t        name[];
        } __data;
        std::uint8_t serialized[1500];
    };
};

class alignas(1) RoomJoinRequestPacket : public Packet {
public:
    union {
        struct {
            PacketType          packetType;
            RequestType         requestType;
            DataType            dataType;
            std::uint16_t       packetLength;
            std::uint8_t        name[];
        } __data;
        std::uint8_t serialized[1500];
    };
};

class alignas(1) RoomExitRequestPacket : public Packet {
public:
    union {
        struct {
            PacketType          packetType;
            RequestType         requestType;
            DataType            dataType;
            std::uint16_t       packetLength;
            std::uint8_t        data[];
        } __data;
        std::uint8_t serialized[1500];
    };
};

class alignas(1) UsersListRequestPacket : public Packet {
public:
    union {
        struct {
            PacketType          packetType;
            RequestType         requestType;
            DataType            dataType;
            std::uint16_t       packetLength;
            std::uint32_t       usersCount;
            std::uint8_t        name[];
        } __data;
        std::uint8_t serialized[1500];
    };
};

class alignas(1) DataPostPacket : public Packet {
public:
    union {
        struct {
            PacketType          packetType;
            RequestType         requestType;
            DataType            dataType;
            std::uint16_t       packetLength;
            std::uint8_t        name[];
        } __data;
        std::uint8_t serialized[1500];
    };
};

class alignas(1) ContinuePacket : public Packet {
public:
    union {
        struct {
            std::uint16_t       packetLength;
            std::uint8_t        data[];
        } __data;
        std::uint8_t serialized[1500];
    };
};

enum class ResponseStatusCode : std::uint16_t {
    OK = 200,
    CREATED = 201,
    ACCEPTED = 202,
    BAD_REQUEST = 400,
    FORBIDDEN = 403,
    NOT_FOUND = 404,
    LENGTH_REQUIRED = 411,
    IAM_A_TEAPOT = 418,
    TOO_MANY_REQUESTS = 429,
    INTERNAL_SERVER_ERROR = 500
};

class alignas(1) ResponsePacket : public Packet {
public:
    union {
        struct {
            PacketType          packetType;
            RequestType         requestType;
            DataType            dataType;
            std::uint16_t       packetLength;
            ResponseStatusCode  responseStatusCode;
            std::uint8_t        data[];
        } __data;
        std::uint8_t serialized[1500];
    };
};

}