// Copyright 2019 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.vision.v1;

import "google/api/annotations.proto";

option cc_enable_arenas = true;
option go_package = "google.golang.org/genproto/googleapis/cloud/vision/v1;vision";
option java_multiple_files = true;
option java_outer_classname = "WebDetectionProto";
option java_package = "com.google.cloud.vision.v1";
option objc_class_prefix = "GCVN";

// Relevant information for the image from the Internet.
message WebDetection {
  // Entity deduced from similar images on the Internet.
  message WebEntity {
    // Opaque entity ID.
    string entity_id = 1;

    // Overall relevancy score for the entity.
    // Not normalized and not comparable across different image queries.
    float score = 2;

    // Canonical description of the entity, in English.
    string description = 3;
  }

  // Metadata for online images.
  message WebImage {
    // The result image URL.
    string url = 1;

    // (Deprecated) Overall relevancy score for the image.
    float score = 2;
  }

  // Metadata for web pages.
  message WebPage {
    // The result web page URL.
    string url = 1;

    // (Deprecated) Overall relevancy score for the web page.
    float score = 2;

    // Title for the web page, may contain HTML markups.
    string page_title = 3;

    // Fully matching images on the page.
    // Can include resized copies of the query image.
    repeated WebImage full_matching_images = 4;

    // Partial matching images on the page.
    // Those images are similar enough to share some key-point features. For
    // example an original image will likely have partial matching for its
    // crops.
    repeated WebImage partial_matching_images = 5;
  }

  // Label to provide extra metadata for the web detection.
  message WebLabel {
    // Label for extra metadata.
    string label = 1;

    // The BCP-47 language code for `label`, such as "en-US" or "sr-Latn".
    // For more information, see
    // http://www.unicode.org/reports/tr35/#Unicode_locale_identifier.
    string language_code = 2;
  }

  // Deduced entities from similar images on the Internet.
  repeated WebEntity web_entities = 1;

  // Fully matching images from the Internet.
  // Can include resized copies of the query image.
  repeated WebImage full_matching_images = 2;

  // Partial matching images from the Internet.
  // Those images are similar enough to share some key-point features. For
  // example an original image will likely have partial matching for its crops.
  repeated WebImage partial_matching_images = 3;

  // Web pages containing the matching images from the Internet.
  repeated WebPage pages_with_matching_images = 4;

  // The visually similar image results.
  repeated WebImage visually_similar_images = 6;

  // The service's best guess as to the topic of the request image.
  // Inferred from similar images on the open web.
  repeated WebLabel best_guess_labels = 8;
}