/*
 * Copyright (C) 2022 The Android Open Source Project
 *
 * 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
 *
 *      http://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 com.android.app.motiontool;

import "view_capture.proto";

option java_multiple_files = true;

message MotionToolsRequest {
  oneof type {
    HandshakeRequest handshake = 1;
    BeginTraceRequest begin_trace = 2;
    EndTraceRequest end_trace = 3;
    PollTraceRequest poll_trace = 4;
  }
}

// RPC response messages.
//
// Returns the result from the corresponding request.
message MotionToolsResponse {
  oneof type {
    // Contains error information whenever the request failed.
    ErrorResponse error = 1;

    HandshakeResponse handshake = 2;
    BeginTraceResponse begin_trace = 3;
    EndTraceResponse end_trace = 4;
    PollTraceResponse poll_trace = 5;
  }
}

message ErrorResponse {
  enum Code {
    UNKNOWN = 0;
    INVALID_REQUEST = 1;
    UNKNOWN_TRACE_ID = 2;
    WINDOW_NOT_FOUND = 3;
  }

  optional Code code = 1;
  // Human readable error message.
  optional string message = 2;
}

// Identifies the window, in which context the motion tools are executed
message WindowIdentifier {
  // An identifier for the root view, as accepted by
  // WindowManagerGlobal#getRootView. This is formatted as
  // `windowName/rootViewClassName@rootViewIdentityHashCode`,
  // for example `NotificationShade/android.view.ViewRootImpl@bab6a53`.
  optional string root_window = 1;
}

// Verifies the motion tools are available for the specified window.
message HandshakeRequest {
  optional WindowIdentifier window = 1;
  optional int32 client_version = 2;
}

message HandshakeResponse {
  enum Status {
    OK = 1;
    WINDOW_NOT_FOUND = 2;
  }
  optional Status status = 1;
  optional int32 server_version = 2;
}

// Enables motion tracing for the specified window
message BeginTraceRequest {
  optional WindowIdentifier window = 1;
}

message BeginTraceResponse {
  optional int32 trace_id = 1;
}

// Disabled motion tracing for the specified window
message EndTraceRequest {
  optional int32 trace_id = 1;
}

message EndTraceResponse {
  optional com.android.app.viewcapture.data.MotionWindowData data = 1;
}

// Polls collected motion trace data collected since the last PollTraceRequest (or the
// BeginTraceRequest)
message PollTraceRequest {
  optional int32 trace_id = 1;
}

message PollTraceResponse {
  optional com.android.app.viewcapture.data.MotionWindowData data = 1;
}