// Copyright 2020 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 = "proto3";

message GitRef {
  string name = 1;
  // Always a commit id. Refs pointing to a non-commit object are not
  // included.
  bytes commit_id = 2;
}

message View {
  repeated bytes head_ids = 1;
  repeated bytes public_head_ids = 4;
  bytes checkout = 2;
  // Only a subset of the refs. For example, does not include refs/notes/.
  repeated GitRef git_refs = 3;
}

message Operation {
  bytes view_id = 1;
  repeated bytes parents = 2;
  OperationMetadata metadata = 3;
}

// TODO: Share with store.proto? Do we even need the timezone here?
message Timestamp {
  uint64 millis_since_epoch = 1;
  int32 tz_offset = 2;
}

message OperationMetadata {
  Timestamp start_time = 1;
  Timestamp end_time = 2;
  string description = 3;
  string hostname = 4;
  string username = 5;
}