// Copyright 2025 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
//
//     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 = "proto3";

package google.cloud.speech.v2;

option go_package = "cloud.google.com/go/speech/apiv2/speechpb;speechpb";
option java_multiple_files = true;
option java_outer_classname = "LocationsMetadataProto";
option java_package = "com.google.cloud.speech.v2";

// Representes a singular feature of a model. If the feature is `recognizer`,
// the release_state of the feature represents the release_state of the model
message ModelFeature {
  // The name of the feature (Note: the feature can be `recognizer`)
  string feature = 1;

  // The release state of the feature
  string release_state = 2;
}

// Represents the collection of features belonging to a model
message ModelFeatures {
  // Repeated field that contains all features of the model
  repeated ModelFeature model_feature = 1;
}

// The metadata about the models in a given region for a specific locale.
// Currently this is just the features of the model
message ModelMetadata {
  // Map of the model name -> features of that model
  map<string, ModelFeatures> model_features = 1;
}

// The metadata about locales available in a given region. Currently this is
// just the models that are available for each locale
message LanguageMetadata {
  // Map of locale (language code) -> models
  map<string, ModelMetadata> models = 1;
}

// The access metadata for a particular region. This can be applied if the org
// policy for the given project disallows a particular region.
message AccessMetadata {
  // Describes the different types of constraints that can be applied on a
  // region.
  enum ConstraintType {
    // Unspecified constraint applied.
    CONSTRAINT_TYPE_UNSPECIFIED = 0;

    // The project's org policy disallows the given region.
    RESOURCE_LOCATIONS_ORG_POLICY_CREATE_CONSTRAINT = 1;
  }

  // Describes the different types of constraints that are applied.
  ConstraintType constraint_type = 1;
}

// Main metadata for the Locations API for STT V2. Currently this is just the
// metadata about locales, models, and features
message LocationsMetadata {
  // Information about available locales, models, and features represented in
  // the hierarchical structure of locales -> models -> features
  LanguageMetadata languages = 1;

  // Information about access metadata for the region and given project.
  AccessMetadata access_metadata = 2;
}