syntax = "proto3";

package pandora;

option java_outer_classname = "HidProto";

import "google/protobuf/empty.proto";

service HID {
  // Connect HID Host
  rpc ConnectHost(google.protobuf.Empty) returns (google.protobuf.Empty);
  // Disconnect HID Host
  rpc DisconnectHost(google.protobuf.Empty) returns (google.protobuf.Empty);
  // Virtual Cable Unplug HID Host
  rpc VirtualCableUnplugHost(google.protobuf.Empty) returns (google.protobuf.Empty);
  // Send a SET_REPORT command, acting as a HID host, to a connected HID device
  rpc SendHostReport(SendHostReportRequest) returns (SendHostReportResponse);
  // receive Protocol Mode Event
  rpc OnSetProtocolMode(google.protobuf.Empty) returns (stream ProtocolModeEvent);
  // receive Report Event
  rpc OnSetReport(google.protobuf.Empty) returns (stream ReportEvent);
}
// Enum values match those in BluetoothHidHost.java
enum HidReportType {
  HID_REPORT_TYPE_UNSPECIFIED = 0;
  HID_REPORT_TYPE_INPUT = 1;
  HID_REPORT_TYPE_OUTPUT = 2;
  HID_REPORT_TYPE_FEATURE = 3;
}
// Enum values match those in BluetoothHidHost.java
enum ProtocolMode {
  PROTOCOL_REPORT_MODE = 0;
  PROTOCOL_BOOT_MODE = 1;
  PROTOCOL_UNSUPPORTED_MODE = 255;
}
enum HidReportId {
  HID_KEYBD_RPT_ID = 0;
  HID_MOUSE_RPT_ID = 1;
  HID_INVALID_RPT_ID = 3;
}

message SendHostReportRequest {
  bytes address = 1;
  HidReportType report_type = 2;
  string report = 3;
}

message SendHostReportResponse {

}

message ProtocolModeEvent {
  ProtocolMode protocol_mode = 1;
}

message ReportEvent {
  HidReportType report_type = 1;
  HidReportId report_id = 2;
  string report_data = 3;
}