edition = "2023";

package mmo.chat;

message SendChatMessageRequest {
    uint64 channel_id = 1;
    string message    = 2;
}

message JoinChannelRequest {
    uint64 channel_id = 1;
}

message LeaveChannelRequest {
    uint64 channel_id = 1;
}

message ChatMessageBroadcastRequest {
    uint64 channel_id = 1;
    uint64 sender_id  = 2;
    string message    = 3;
}

// Server -> Client responses

enum ChatErrorCode {
    CHAT_ERROR_CODE_OK                  = 0;
    CHAT_ERROR_CODE_UNAUTHORIZED        = 1;
    CHAT_ERROR_CODE_CHANNEL_NOT_FOUND   = 2;
    CHAT_ERROR_CODE_ALREADY_IN_CHANNEL  = 3;
    CHAT_ERROR_CODE_NOT_IN_CHANNEL      = 4;
}

message JoinChannelResponse {
    uint64        channel_id = 1;
    ChatErrorCode error      = 2;
}

message LeaveChannelResponse {
    uint64        channel_id = 1;
    ChatErrorCode error      = 2;
}

message SendChatMessageResponse {
    uint64        channel_id = 1;
    ChatErrorCode error      = 2;
}