syntax = "proto3";
option csharp_namespace = "CrystalConnector.Protocol.Messages";

package CrystalConnector;

message NamespacedName {
  string namespace = 1;
  string name = 2;
}

enum MessageDirection {
  NONE = 0;
  INCOMING = 1;
  OUTGOING = 2;
  ALL = 3;
}

message Successful {
}

enum Error {
  UNKNOWN = 0;
  AUTHENTICATED = 1;
  NAME_EXISTS = 2;
  UNAUTHENTICATED = 3;
  UNREGISTERED_CHANNEL = 4;
  INTERNAL = 5;
}

message Result {
  oneof result {
    Successful successful = 1;
    Error error = 2;
  }
}

message Authenticate {
  NamespacedName client_id = 1;
  string client_name = 2;
  string secret_key = 3;
  
  repeated Channel channels = 4;
}

message Channel {
  NamespacedName id = 1;
  MessageDirection direction = 2;
}

message Publish {
  NamespacedName channel = 1;
  string payload = 2;
}

message Forward {
  string publisher = 1;
  NamespacedName channel = 2;
  string payload = 3;
}