// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

syntax = "proto3";

package feedwire;

import "components/feed/core/proto/v2/wire/action_diagnostic_info.proto";
import "components/feed/core/proto/v2/wire/action_surface.proto";
import "components/feed/core/proto/v2/wire/code.proto";
import "components/feed/core/proto/v2/wire/consistency_token.proto";
import "components/feed/core/proto/v2/wire/data_operation.proto";
import "components/feed/core/proto/v2/wire/error_details.proto";
import "components/feed/core/proto/v2/wire/feed_action.proto";
import "components/feed/core/proto/v2/wire/feed_request.proto";
import "components/feed/core/proto/v2/wire/feed_response.proto";
import "components/feed/core/proto/v2/wire/timestamp.proto";
import "components/feed/core/proto/v2/wire/token.proto";

option optimize_for = LITE_RUNTIME;

enum VisibilitySignal {
  VISIBILITY_SIGNAL_UNSPECIFIED = 0;
  VISIBLE = 1;
  HIDDEN = 2;
}
message FullRefreshRequest {}
message InitialView {
  int32 stream_index = 1;
  FeedAction feed_actions = 2;
  VisibilitySignal visibility_signal = 3;
}
message FeedVisibilityChange {
  ActionSurface action_surface = 1;
  VisibilitySignal visibility_signal = 2;
  Timestamp event_time = 3;
}
message ClientAction {
  oneof client_action_payload {
    FullRefreshRequest full_refresh_request = 1;
    InitialView initial_view = 2;
    FeedVisibilityChange feed_visibility_change = 3;
  }
}
message ActionsPayload {
  repeated FeedAction feed_actions = 1;
  repeated ClientAction client_actions = 3;
  string id = 2;
  ActionDiagnosticInfo action_diagnostic_info = 4;
}
message InitializationPayload {
  enum SessionType {
    SESSION_TYPE_UNSPECIFIED = 0;
    BACKGROUND = 1;
    INTERACTIVE = 2;
  }
  optional FeedRequest feed_request = 1;
  optional Token token = 2;
  optional SessionType session_type = 4;
}
message StreamingTokenUpdatePayload {
  optional Token token = 1;
}
message InitializationAckPayload {}
message DataOperationPayload {
  repeated DataOperation data_operations = 1;
}
message ResponseStatus {
  optional Code response_code = 1;
  optional ErrorInfo response_error_info = 2;
}
message NewFeedPayload {
  FeedResponse feed_response = 1;
  optional ResponseStatus status = 2;
}
message ActionsPayloadAck {
  string processed_id = 1;
  optional ResponseStatus status = 3;
}
message ClientStreamingMessage {
  oneof payload {
    InitializationPayload initialization_payload = 3;
    StreamingTokenUpdatePayload streaming_token_update_payload = 4;
  }
  optional ActionsPayload actions_payload = 1;
}
message ServerStreamingMessage {
  oneof payload {
    InitializationAckPayload initialization_ack_payload = 4;
    DataOperationPayload data_operation_payload = 1;
    NewFeedPayload new_feed_payload = 5;
    ActionsPayloadAck actions_payload_ack = 3;
  }
  optional Token token = 6;
  optional ConsistencyToken consistency_token = 7;
}