syntax = "proto3";

option go_package = "github.com/vilmibm/hermeticum/proto";

package proto;

/*

In the existing code, there are a few classes of messages that get sent to the user:

- ACK of a meta operation (login, register, ping)
- ACK of a command (this is kind of useless, imo)
- Refresh to an object's state (used when editing objects)
- Refresh to the room state
- Message to print

these are mostly recreated below with the TODO of deciding on revision/object stuff (which I wasn't thrilled with in the alpha)

*/

service GameWorld {
  rpc Register(AuthInfo) returns (SessionInfo);
  rpc Login(AuthInfo) returns (SessionInfo);
  rpc Commands(stream Command) returns (stream CommandAck);
  rpc State(SessionInfo) returns (stream StateUpdate);
  rpc Messages(SessionInfo) returns (stream ClientMessage);
  rpc Map(SessionInfo) returns (MapData);
  rpc Ping(SessionInfo) returns (Pong);
  // TODO decide on how revisions / object editing in general should work
}

message AuthInfo {
  string username = 1;
  string password = 2;
}

message SessionInfo {
  string sessionID = 1;
}

message StateUpdate {
  // TODO
}

message Command {
  SessionInfo sessionInfo = 1;
  string verb = 2;
  string rest = 3;
}

message CommandAck {
    bool acked = 1;
    string errorMsg = 2;
}

message ClientMessage {
  enum ClientMessageType {
    WHISPER = 0;   // someone or something sent a private message to user
    OVERHEARD = 1; // someone or something in the same room said something out loud
    EMOTE = 2;     // someone or something in the same room performed an action
    GENERIC = 3;   // just a string that should be printed (ie, "you hear noises in a nearby room")
    GLOBAL = 4;    // the system sent out a PSA
  }

  ClientMessageType type = 1;
  optional string speaker = 2;
  string text = 3;
}

message MapData {
  string mapData = 1;
}

message Pong {
  string when = 1; // timestamp of pong creation
}