syntax = "proto3";
package mqtt;

import "google/protobuf/timestamp.proto";

message Payload {
  oneof payload {
    MqttEntityPayload MqttEntityPayload = 1;
    MqttEntityPayloadList MqttEntityPayloadList = 2;
  }
}

message MqttEntityPayload {
  int32 tracking_id  = 1;
  int32 class_id = 2;
  optional float class_confidence = 3;
  optional string data = 4;
  double lat = 5;
  double long = 6;
  // Heading in radians, standard mathematical convention (0 = east, counter-clockwise, negative allowed).
  // See https://en.wikipedia.org/wiki/Angle#Measuring_angles
  optional float heading = 7;
  optional float pitch = 8;
  optional float level = 15;
  optional float velocity_ms = 9;
  optional float acceleration_ms = 10;
  optional float object_height = 11;
  optional float object_width = 12;
  optional float object_length = 13;
  optional string time = 14;
}

// Our address book file is just one of these.
message MqttEntityPayloadList {
  repeated MqttEntityPayload measurements = 1;
}