// Copyright 2023 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

syntax = "proto2";

package rootcanal.configuration;
option optimize_for = CODE_SIZE;

enum ControllerPreset {
  // Version 5.3, all features enabled, all quirks disabled.
  DEFAULT = 0;
  // Official PTS dongle, Laird BL654.
  LAIRD_BL654 = 1;
  // Official PTS dongle, CSR rck.
  CSR_RCK_PTS_DONGLE = 2;
  // Official PTS dongle, Intel BE200.
  INTEL_BE200 = 3;
}

message ControllerFeatures {
  optional bool le_extended_advertising = 1;
  optional bool le_periodic_advertising = 2;
  optional bool ll_privacy = 3;
  optional bool le_2m_phy = 4;
  optional bool le_coded_phy = 5;
  // Enable the support for both LL Connected Isochronous Stream Central
  // and LL Connected Isochronous Stream Peripheral.
  optional bool le_connected_isochronous_stream = 6;
}

message ControllerQuirks {
  // Randomly send ACL payloads before the Connection Complete event
  // is sent to the Host stack.
  optional bool send_acl_data_before_connection_complete = 1;
  // Configure a default value for the LE random address.
  optional bool has_default_random_address = 2;
  // Send an Hardware Error event if any command is called before HCI Reset.
  optional bool hardware_error_before_reset = 3;
}

message VendorFeatures {
  // Enable the support for the CSR vendor command.
  optional bool csr = 1;
  // Enable the support for Android vendor commands.
  // Note: not all required vendor commands are necessarily implemented
  // in RootCanal, unimplemented commands will return a Command Status or
  // Command Complete HCI event with the status Unsupported Opcode.
  optional bool android = 2;
}

message Controller {
  // Configure the controller preset. Presets come with a pre-selection
  // of features and quirks, but these can be overridden with the next fields.
  optional ControllerPreset preset = 1;
  // Configure support for controller features.
  optional ControllerFeatures features = 2;
  // Enable controller quirks.
  // Quirks are behaviors observed in real controllers that are not valid
  // according to the specification.
  optional ControllerQuirks quirks = 3;
  // Enable strict mode (defaults to enabled).
  // Activate assertion checks in RootCanal for missing RootCanal features
  // or Host stack misbehavior.
  optional bool strict = 4;
  // Configure support for vendor features.
  optional VendorFeatures vendor = 5;
}

message TcpServer {
  // Configure the TCP port on which the controller with this defined
  // configuration will be served.
  required int32 tcp_port = 1;
  // Controller configuration for this port.
  optional Controller configuration = 2;
}

message Configuration {
  repeated TcpServer tcp_server = 1;
}