// 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
//
//     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.dialogflow.v2beta1;

import "google/api/annotations.proto";
import "google/api/client.proto";
import "google/api/field_behavior.proto";
import "google/api/resource.proto";
import "google/cloud/dialogflow/v2beta1/audio_config.proto";
import "google/cloud/dialogflow/v2beta1/context.proto";
import "google/longrunning/operations.proto";
import "google/protobuf/duration.proto";
import "google/protobuf/empty.proto";
import "google/protobuf/field_mask.proto";
import "google/protobuf/struct.proto";

option cc_enable_arenas = true;
option csharp_namespace = "Google.Cloud.Dialogflow.V2beta1";
option go_package = "google.golang.org/genproto/googleapis/cloud/dialogflow/v2beta1;dialogflow";
option java_multiple_files = true;
option java_outer_classname = "IntentProto";
option java_package = "com.google.cloud.dialogflow.v2beta1";
option objc_class_prefix = "DF";

// Service for managing [Intents][google.cloud.dialogflow.v2beta1.Intent].
service Intents {
  option (google.api.default_host) = "dialogflow.googleapis.com";
  option (google.api.oauth_scopes) =
      "https://www.googleapis.com/auth/cloud-platform,"
      "https://www.googleapis.com/auth/dialogflow";

  // Returns the list of all intents in the specified agent.
  rpc ListIntents(ListIntentsRequest) returns (ListIntentsResponse) {
    option (google.api.http) = {
      get: "/v2beta1/{parent=projects/*/agent}/intents"
      additional_bindings {
        get: "/v2beta1/{parent=projects/*/locations/*/agent}/intents"
      }
    };
    option (google.api.method_signature) = "parent";
    option (google.api.method_signature) = "parent,language_code";
  }

  // Retrieves the specified intent.
  rpc GetIntent(GetIntentRequest) returns (Intent) {
    option (google.api.http) = {
      get: "/v2beta1/{name=projects/*/agent/intents/*}"
      additional_bindings {
        get: "/v2beta1/{name=projects/*/locations/*/agent/intents/*}"
      }
    };
    option (google.api.method_signature) = "name";
    option (google.api.method_signature) = "name,language_code";
  }

  // Creates an intent in the specified agent.
  rpc CreateIntent(CreateIntentRequest) returns (Intent) {
    option (google.api.http) = {
      post: "/v2beta1/{parent=projects/*/agent}/intents"
      body: "intent"
      additional_bindings {
        post: "/v2beta1/{parent=projects/*/locations/*/agent}/intents"
        body: "intent"
      }
    };
    option (google.api.method_signature) = "parent,intent";
    option (google.api.method_signature) = "parent,intent,language_code";
  }

  // Updates the specified intent.
  rpc UpdateIntent(UpdateIntentRequest) returns (Intent) {
    option (google.api.http) = {
      patch: "/v2beta1/{intent.name=projects/*/agent/intents/*}"
      body: "intent"
      additional_bindings {
        patch: "/v2beta1/{intent.name=projects/*/locations/*/agent/intents/*}"
        body: "intent"
      }
    };
    option (google.api.method_signature) = "intent,update_mask";
    option (google.api.method_signature) = "intent";
    option (google.api.method_signature) = "intent,language_code";
    option (google.api.method_signature) = "intent,language_code,update_mask";
  }

  // Deletes the specified intent and its direct or indirect followup intents.
  rpc DeleteIntent(DeleteIntentRequest) returns (google.protobuf.Empty) {
    option (google.api.http) = {
      delete: "/v2beta1/{name=projects/*/agent/intents/*}"
      additional_bindings {
        delete: "/v2beta1/{name=projects/*/locations/*/agent/intents/*}"
      }
    };
    option (google.api.method_signature) = "name";
  }

  // Updates/Creates multiple intents in the specified agent.
  //
  // Operation <response: [BatchUpdateIntentsResponse][google.cloud.dialogflow.v2beta1.BatchUpdateIntentsResponse]>
  rpc BatchUpdateIntents(BatchUpdateIntentsRequest) returns (google.longrunning.Operation) {
    option (google.api.http) = {
      post: "/v2beta1/{parent=projects/*/agent}/intents:batchUpdate"
      body: "*"
      additional_bindings {
        post: "/v2beta1/{parent=projects/*/locations/*/agent}/intents:batchUpdate"
        body: "*"
      }
    };
    option (google.api.method_signature) = "parent,intent_batch_uri";
    option (google.api.method_signature) = "parent,intent_batch_inline";
    option (google.longrunning.operation_info) = {
      response_type: "google.cloud.dialogflow.v2beta1.BatchUpdateIntentsResponse"
      metadata_type: "google.protobuf.Struct"
    };
  }

  // Deletes intents in the specified agent.
  //
  // Operation <response: [google.protobuf.Empty][google.protobuf.Empty]>
  rpc BatchDeleteIntents(BatchDeleteIntentsRequest) returns (google.longrunning.Operation) {
    option (google.api.http) = {
      post: "/v2beta1/{parent=projects/*/agent}/intents:batchDelete"
      body: "*"
      additional_bindings {
        post: "/v2beta1/{parent=projects/*/locations/*/agent}/intents:batchDelete"
        body: "*"
      }
    };
    option (google.api.method_signature) = "parent,intents";
    option (google.longrunning.operation_info) = {
      response_type: "google.protobuf.Empty"
      metadata_type: "google.protobuf.Struct"
    };
  }
}

// An intent categorizes an end-user's intention for one conversation turn. For
// each agent, you define many intents, where your combined intents can handle a
// complete conversation. When an end-user writes or says something, referred to
// as an end-user expression or end-user input, Dialogflow matches the end-user
// input to the best intent in your agent. Matching an intent is also known as
// intent classification.
//
// For more information, see the [intent
// guide](https://cloud.google.com/dialogflow/docs/intents-overview).
message Intent {
  option (google.api.resource) = {
    type: "dialogflow.googleapis.com/Intent"
    pattern: "projects/{project}/agent/intents/{intent}"
    pattern: "projects/{project}/locations/{location}/agent/intents/{intent}"
  };

  // Represents an example that the agent is trained on.
  message TrainingPhrase {
    // Represents a part of a training phrase.
    message Part {
      // Required. The text for this part.
      string text = 1;

      // Optional. The entity type name prefixed with `@`.
      // This field is required for annotated parts of the training phrase.
      string entity_type = 2;

      // Optional. The parameter name for the value extracted from the
      // annotated part of the example.
      // This field is required for annotated parts of the training phrase.
      string alias = 3;

      // Optional. Indicates whether the text was manually annotated.
      // This field is set to true when the Dialogflow Console is used to
      // manually annotate the part. When creating an annotated part with the
      // API, you must set this to true.
      bool user_defined = 4;
    }

    // Represents different types of training phrases.
    enum Type {
      // Not specified. This value should never be used.
      TYPE_UNSPECIFIED = 0;

      // Examples do not contain @-prefixed entity type names, but example parts
      // can be annotated with entity types.
      EXAMPLE = 1;

      // Templates are not annotated with entity types, but they can contain
      // @-prefixed entity type names as substrings.
      // Template mode has been deprecated. Example mode is the only supported
      // way to create new training phrases. If you have existing training
      // phrases that you've created in template mode, those will continue to
      // work.
      TEMPLATE = 2 [deprecated = true];
    }

    // Output only. The unique identifier of this training phrase.
    string name = 1;

    // Required. The type of the training phrase.
    Type type = 2 [(google.api.field_behavior) = REQUIRED];

    // Required. The ordered list of training phrase parts.
    // The parts are concatenated in order to form the training phrase.
    //
    // Note: The API does not automatically annotate training phrases like the
    // Dialogflow Console does.
    //
    // Note: Do not forget to include whitespace at part boundaries,
    // so the training phrase is well formatted when the parts are concatenated.
    //
    // If the training phrase does not need to be annotated with parameters,
    // you just need a single part with only the [Part.text][google.cloud.dialogflow.v2beta1.Intent.TrainingPhrase.Part.text] field set.
    //
    // If you want to annotate the training phrase, you must create multiple
    // parts, where the fields of each part are populated in one of two ways:
    //
    // -   `Part.text` is set to a part of the phrase that has no parameters.
    // -   `Part.text` is set to a part of the phrase that you want to annotate,
    //     and the `entity_type`, `alias`, and `user_defined` fields are all
    //     set.
    repeated Part parts = 3 [(google.api.field_behavior) = REQUIRED];

    // Optional. Indicates how many times this example was added to
    // the intent. Each time a developer adds an existing sample by editing an
    // intent or training, this counter is increased.
    int32 times_added_count = 4 [(google.api.field_behavior) = OPTIONAL];
  }

  // Represents intent parameters.
  message Parameter {
    // The unique identifier of this parameter.
    string name = 1;

    // Required. The name of the parameter.
    string display_name = 2;

    // Optional. The definition of the parameter value. It can be:
    //
    // - a constant string,
    // - a parameter value defined as `$parameter_name`,
    // - an original parameter value defined as `$parameter_name.original`,
    // - a parameter value from some context defined as
    //   `#context_name.parameter_name`.
    string value = 3;

    // Optional. The default value to use when the `value` yields an empty
    // result.
    // Default values can be extracted from contexts by using the following
    // syntax: `#context_name.parameter_name`.
    string default_value = 4;

    // Optional. The name of the entity type, prefixed with `@`, that
    // describes values of the parameter. If the parameter is
    // required, this must be provided.
    string entity_type_display_name = 5;

    // Optional. Indicates whether the parameter is required. That is,
    // whether the intent cannot be completed without collecting the parameter
    // value.
    bool mandatory = 6;

    // Optional. The collection of prompts that the agent can present to the
    // user in order to collect a value for the parameter.
    repeated string prompts = 7;

    // Optional. Indicates whether the parameter represents a list of values.
    bool is_list = 8;
  }

  // Corresponds to the `Response` field in the Dialogflow console.
  message Message {
    // The text response message.
    message Text {
      // Optional. The collection of the agent's responses.
      repeated string text = 1;
    }

    // The image response message.
    message Image {
      // Optional. The public URI to an image file.
      string image_uri = 1;

      // A text description of the image to be used for accessibility,
      // e.g., screen readers. Required if image_uri is set for CarouselSelect.
      string accessibility_text = 2;
    }

    // The quick replies response message.
    message QuickReplies {
      // Optional. The title of the collection of quick replies.
      string title = 1;

      // Optional. The collection of quick replies.
      repeated string quick_replies = 2;
    }

    // The card response message.
    message Card {
      // Optional. Contains information about a button.
      message Button {
        // Optional. The text to show on the button.
        string text = 1;

        // Optional. The text to send back to the Dialogflow API or a URI to
        // open.
        string postback = 2;
      }

      // Optional. The title of the card.
      string title = 1;

      // Optional. The subtitle of the card.
      string subtitle = 2;

      // Optional. The public URI to an image file for the card.
      string image_uri = 3;

      // Optional. The collection of card buttons.
      repeated Button buttons = 4;
    }

    // The simple response message containing speech or text.
    message SimpleResponse {
      // One of text_to_speech or ssml must be provided. The plain text of the
      // speech output. Mutually exclusive with ssml.
      string text_to_speech = 1;

      // One of text_to_speech or ssml must be provided. Structured spoken
      // response to the user in the SSML format. Mutually exclusive with
      // text_to_speech.
      string ssml = 2;

      // Optional. The text to display.
      string display_text = 3;
    }

    // The collection of simple response candidates.
    // This message in `QueryResult.fulfillment_messages` and
    // `WebhookResponse.fulfillment_messages` should contain only one
    // `SimpleResponse`.
    message SimpleResponses {
      // Required. The list of simple responses.
      repeated SimpleResponse simple_responses = 1;
    }

    // The basic card message. Useful for displaying information.
    message BasicCard {
      // The button object that appears at the bottom of a card.
      message Button {
        // Opens the given URI.
        message OpenUriAction {
          // Required. The HTTP or HTTPS scheme URI.
          string uri = 1;
        }

        // Required. The title of the button.
        string title = 1;

        // Required. Action to take when a user taps on the button.
        OpenUriAction open_uri_action = 2;
      }

      // Optional. The title of the card.
      string title = 1;

      // Optional. The subtitle of the card.
      string subtitle = 2;

      // Required, unless image is present. The body text of the card.
      string formatted_text = 3;

      // Optional. The image for the card.
      Image image = 4;

      // Optional. The collection of card buttons.
      repeated Button buttons = 5;
    }

    // The suggestion chip message that the user can tap to quickly post a reply
    // to the conversation.
    message Suggestion {
      // Required. The text shown the in the suggestion chip.
      string title = 1;
    }

    // The collection of suggestions.
    message Suggestions {
      // Required. The list of suggested replies.
      repeated Suggestion suggestions = 1;
    }

    // The suggestion chip message that allows the user to jump out to the app
    // or website associated with this agent.
    message LinkOutSuggestion {
      // Required. The name of the app or site this chip is linking to.
      string destination_name = 1;

      // Required. The URI of the app or site to open when the user taps the
      // suggestion chip.
      string uri = 2;
    }

    // The card for presenting a list of options to select from.
    message ListSelect {
      // An item in the list.
      message Item {
        // Required. Additional information about this option.
        SelectItemInfo info = 1;

        // Required. The title of the list item.
        string title = 2;

        // Optional. The main text describing the item.
        string description = 3;

        // Optional. The image to display.
        Image image = 4;
      }

      // Optional. The overall title of the list.
      string title = 1;

      // Required. List items.
      repeated Item items = 2;

      // Optional. Subtitle of the list.
      string subtitle = 3 [(google.api.field_behavior) = OPTIONAL];
    }

    // The card for presenting a carousel of options to select from.
    message CarouselSelect {
      // An item in the carousel.
      message Item {
        // Required. Additional info about the option item.
        SelectItemInfo info = 1;

        // Required. Title of the carousel item.
        string title = 2;

        // Optional. The body text of the card.
        string description = 3;

        // Optional. The image to display.
        Image image = 4;
      }

      // Required. Carousel items.
      repeated Item items = 1;
    }

    // Additional info about the select item for when it is triggered in a
    // dialog.
    message SelectItemInfo {
      // Required. A unique key that will be sent back to the agent if this
      // response is given.
      string key = 1;

      // Optional. A list of synonyms that can also be used to trigger this
      // item in dialog.
      repeated string synonyms = 2;
    }

    // Plays audio from a file in Telephony Gateway.
    message TelephonyPlayAudio {
      // Required. URI to a Google Cloud Storage object containing the audio to
      // play, e.g., "gs://bucket/object". The object must contain a single
      // channel (mono) of linear PCM audio (2 bytes / sample) at 8kHz.
      //
      // This object must be readable by the `service-<Project
      // Number>@gcp-sa-dialogflow.iam.gserviceaccount.com` service account
      // where <Project Number> is the number of the Telephony Gateway project
      // (usually the same as the Dialogflow agent project). If the Google Cloud
      // Storage bucket is in the Telephony Gateway project, this permission is
      // added by default when enabling the Dialogflow V2 API.
      //
      // For audio from other sources, consider using the
      // `TelephonySynthesizeSpeech` message with SSML.
      string audio_uri = 1;
    }

    // Synthesizes speech and plays back the synthesized audio to the caller in
    // Telephony Gateway.
    //
    // Telephony Gateway takes the synthesizer settings from
    // `DetectIntentResponse.output_audio_config` which can either be set
    // at request-level or can come from the agent-level synthesizer config.
    message TelephonySynthesizeSpeech {
      // Required. The source to be synthesized.
      oneof source {
        // The raw text to be synthesized.
        string text = 1;

        // The SSML to be synthesized. For more information, see
        // [SSML](https://developers.google.com/actions/reference/ssml).
        string ssml = 2;
      }
    }

    // Transfers the call in Telephony Gateway.
    message TelephonyTransferCall {
      // Required. The phone number to transfer the call to
      // in [E.164 format](https://en.wikipedia.org/wiki/E.164).
      //
      // We currently only allow transferring to US numbers (+1xxxyyyzzzz).
      string phone_number = 1;
    }

    // Rich Business Messaging (RBM) text response with suggestions.
    message RbmText {
      // Required. Text sent and displayed to the user.
      string text = 1;

      // Optional. One or more suggestions to show to the user.
      repeated RbmSuggestion rbm_suggestion = 2;
    }

    // Carousel Rich Business Messaging (RBM) rich card.
    //
    // Rich cards allow you to respond to users with more vivid content, e.g.
    // with media and suggestions.
    //
    // If you want to show a single card with more control over the layout,
    // please use [RbmStandaloneCard][google.cloud.dialogflow.v2beta1.Intent.Message.RbmStandaloneCard] instead.
    message RbmCarouselCard {
      // The width of the cards in the carousel.
      enum CardWidth {
        // Not specified.
        CARD_WIDTH_UNSPECIFIED = 0;

        // 120 DP. Note that tall media cannot be used.
        SMALL = 1;

        // 232 DP.
        MEDIUM = 2;
      }

      // Required. The width of the cards in the carousel.
      CardWidth card_width = 1;

      // Required. The cards in the carousel. A carousel must have at least
      // 2 cards and at most 10.
      repeated RbmCardContent card_contents = 2;
    }

    // Standalone Rich Business Messaging (RBM) rich card.
    //
    // Rich cards allow you to respond to users with more vivid content, e.g.
    // with media and suggestions.
    //
    // You can group multiple rich cards into one using [RbmCarouselCard][google.cloud.dialogflow.v2beta1.Intent.Message.RbmCarouselCard] but
    // carousel cards will give you less control over the card layout.
    message RbmStandaloneCard {
      // Orientation of the card.
      enum CardOrientation {
        // Not specified.
        CARD_ORIENTATION_UNSPECIFIED = 0;

        // Horizontal layout.
        HORIZONTAL = 1;

        // Vertical layout.
        VERTICAL = 2;
      }

      // Thumbnail preview alignment for standalone cards with horizontal
      // layout.
      enum ThumbnailImageAlignment {
        // Not specified.
        THUMBNAIL_IMAGE_ALIGNMENT_UNSPECIFIED = 0;

        // Thumbnail preview is left-aligned.
        LEFT = 1;

        // Thumbnail preview is right-aligned.
        RIGHT = 2;
      }

      // Required. Orientation of the card.
      CardOrientation card_orientation = 1;

      // Required if orientation is horizontal.
      // Image preview alignment for standalone cards with horizontal layout.
      ThumbnailImageAlignment thumbnail_image_alignment = 2;

      // Required. Card content.
      RbmCardContent card_content = 3;
    }

    // Rich Business Messaging (RBM) Card content
    message RbmCardContent {
      // Rich Business Messaging (RBM) Media displayed in Cards
      // The following media-types are currently supported:
      //
      // Image Types
      //
      // * image/jpeg
      // * image/jpg'
      // * image/gif
      // * image/png
      //
      // Video Types
      //
      // * video/h263
      // * video/m4v
      // * video/mp4
      // * video/mpeg
      // * video/mpeg4
      // * video/webm
      message RbmMedia {
        // Media height
        enum Height {
          // Not specified.
          HEIGHT_UNSPECIFIED = 0;

          // 112 DP.
          SHORT = 1;

          // 168 DP.
          MEDIUM = 2;

          // 264 DP. Not available for rich card carousels when the card width
          // is set to small.
          TALL = 3;
        }

        // Required. Publicly reachable URI of the file. The RBM platform
        // determines the MIME type of the file from the content-type field in
        // the HTTP headers when the platform fetches the file. The content-type
        // field must be present and accurate in the HTTP response from the URL.
        string file_uri = 1;

        // Optional. Publicly reachable URI of the thumbnail.If you don't
        // provide a thumbnail URI, the RBM platform displays a blank
        // placeholder thumbnail until the user's device downloads the file.
        // Depending on the user's setting, the file may not download
        // automatically and may require the user to tap a download button.
        string thumbnail_uri = 2;

        // Required for cards with vertical orientation. The height of the media
        // within a rich card with a vertical layout.
        // For a standalone card with horizontal layout, height is not
        // customizable, and this field is ignored.
        Height height = 3;
      }

      // Optional. Title of the card (at most 200 bytes).
      //
      // At least one of the title, description or media must be set.
      string title = 1;

      // Optional. Description of the card (at most 2000 bytes).
      //
      // At least one of the title, description or media must be set.
      string description = 2;

      // Optional. However at least one of the title, description or media must
      // be set. Media (image, GIF or a video) to include in the card.
      RbmMedia media = 3;

      // Optional. List of suggestions to include in the card.
      repeated RbmSuggestion suggestions = 4;
    }

    // Rich Business Messaging (RBM) suggestion. Suggestions allow user to
    // easily select/click a predefined response or perform an action (like
    // opening a web uri).
    message RbmSuggestion {
      // Predefined suggested response or action for user to choose
      oneof suggestion {
        // Predefined replies for user to select instead of typing
        RbmSuggestedReply reply = 1;

        // Predefined client side actions that user can choose
        RbmSuggestedAction action = 2;
      }
    }

    // Rich Business Messaging (RBM) suggested reply that the user can click
    // instead of typing in their own response.
    message RbmSuggestedReply {
      // Suggested reply text.
      string text = 1;

      // Opaque payload that the Dialogflow receives in a user event
      // when the user taps the suggested reply. This data will be also
      // forwarded to webhook to allow performing custom business logic.
      string postback_data = 2;
    }

    // Rich Business Messaging (RBM) suggested client-side action that the user
    // can choose from the card.
    message RbmSuggestedAction {
      // Opens the user's default dialer app with the specified phone number
      // but does not dial automatically.
      message RbmSuggestedActionDial {
        // Required. The phone number to fill in the default dialer app.
        // This field should be in [E.164](https://en.wikipedia.org/wiki/E.164)
        // format. An example of a correctly formatted phone number:
        // +15556767888.
        string phone_number = 1;
      }

      // Opens the user's default web browser app to the specified uri
      // If the user has an app installed that is
      // registered as the default handler for the URL, then this app will be
      // opened instead, and its icon will be used in the suggested action UI.
      message RbmSuggestedActionOpenUri {
        // Required. The uri to open on the user device
        string uri = 1;
      }

      // Opens the device's location chooser so the user can pick a location
      // to send back to the agent.
      message RbmSuggestedActionShareLocation {

      }

      // Text to display alongside the action.
      string text = 1;

      // Opaque payload that the Dialogflow receives in a user event
      // when the user taps the suggested action. This data will be also
      // forwarded to webhook to allow performing custom business logic.
      string postback_data = 2;

      // Action that needs to be triggered.
      oneof action {
        // Suggested client side action: Dial a phone number
        RbmSuggestedActionDial dial = 3;

        // Suggested client side action: Open a URI on device
        RbmSuggestedActionOpenUri open_url = 4;

        // Suggested client side action: Share user location
        RbmSuggestedActionShareLocation share_location = 5;
      }
    }

    // The media content card for Actions on Google.
    message MediaContent {
      // Response media object for media content card.
      message ResponseMediaObject {
        // Required. Name of media card.
        string name = 1;

        // Optional. Description of media card.
        string description = 2;

        // Image to show with the media card.
        oneof image {
          // Optional. Image to display above media content.
          Image large_image = 3;

          // Optional. Icon to display above media content.
          Image icon = 4;
        }

        // Required. Url where the media is stored.
        string content_url = 5;
      }

      // Format of response media type.
      enum ResponseMediaType {
        // Unspecified.
        RESPONSE_MEDIA_TYPE_UNSPECIFIED = 0;

        // Response media type is audio.
        AUDIO = 1;
      }

      // Optional. What type of media is the content (ie "audio").
      ResponseMediaType media_type = 1;

      // Required. List of media objects.
      repeated ResponseMediaObject media_objects = 2;
    }

    // Browse Carousel Card for Actions on Google.
    // https://developers.google.com/actions/assistant/responses#browsing_carousel
    message BrowseCarouselCard {
      // Browsing carousel tile
      message BrowseCarouselCardItem {
        // Actions on Google action to open a given url.
        message OpenUrlAction {
          // Type of the URI.
          enum UrlTypeHint {
            // Unspecified
            URL_TYPE_HINT_UNSPECIFIED = 0;

            // Url would be an amp action
            AMP_ACTION = 1;

            // URL that points directly to AMP content, or to a canonical URL
            // which refers to AMP content via <link rel="amphtml">.
            AMP_CONTENT = 2;
          }

          // Required. URL
          string url = 1;

          // Optional. Specifies the type of viewer that is used when opening
          // the URL. Defaults to opening via web browser.
          UrlTypeHint url_type_hint = 3;
        }

        // Required. Action to present to the user.
        OpenUrlAction open_uri_action = 1;

        // Required. Title of the carousel item. Maximum of two lines of text.
        string title = 2;

        // Optional. Description of the carousel item. Maximum of four lines of
        // text.
        string description = 3;

        // Optional. Hero image for the carousel item.
        Image image = 4;

        // Optional. Text that appears at the bottom of the Browse Carousel
        // Card. Maximum of one line of text.
        string footer = 5;
      }

      // Image display options for Actions on Google. This should be used for
      // when the image's aspect ratio does not match the image container's
      // aspect ratio.
      enum ImageDisplayOptions {
        // Fill the gaps between the image and the image container with gray
        // bars.
        IMAGE_DISPLAY_OPTIONS_UNSPECIFIED = 0;

        // Fill the gaps between the image and the image container with gray
        // bars.
        GRAY = 1;

        // Fill the gaps between the image and the image container with white
        // bars.
        WHITE = 2;

        // Image is scaled such that the image width and height match or exceed
        // the container dimensions. This may crop the top and bottom of the
        // image if the scaled image height is greater than the container
        // height, or crop the left and right of the image if the scaled image
        // width is greater than the container width. This is similar to "Zoom
        // Mode" on a widescreen TV when playing a 4:3 video.
        CROPPED = 3;

        // Pad the gaps between image and image frame with a blurred copy of the
        // same image.
        BLURRED_BACKGROUND = 4;
      }

      // Required. List of items in the Browse Carousel Card. Minimum of two
      // items, maximum of ten.
      repeated BrowseCarouselCardItem items = 1;

      // Optional. Settings for displaying the image. Applies to every image in
      // [items][google.cloud.dialogflow.v2beta1.Intent.Message.BrowseCarouselCard.items].
      ImageDisplayOptions image_display_options = 2;
    }

    // Table card for Actions on Google.
    message TableCard {
      // Required. Title of the card.
      string title = 1;

      // Optional. Subtitle to the title.
      string subtitle = 2;

      // Optional. Image which should be displayed on the card.
      Image image = 3;

      // Optional. Display properties for the columns in this table.
      repeated ColumnProperties column_properties = 4;

      // Optional. Rows in this table of data.
      repeated TableCardRow rows = 5;

      // Optional. List of buttons for the card.
      repeated BasicCard.Button buttons = 6;
    }

    // Column properties for [TableCard][google.cloud.dialogflow.v2beta1.Intent.Message.TableCard].
    message ColumnProperties {
      // Text alignments within a cell.
      enum HorizontalAlignment {
        // Text is aligned to the leading edge of the column.
        HORIZONTAL_ALIGNMENT_UNSPECIFIED = 0;

        // Text is aligned to the leading edge of the column.
        LEADING = 1;

        // Text is centered in the column.
        CENTER = 2;

        // Text is aligned to the trailing edge of the column.
        TRAILING = 3;
      }

      // Required. Column heading.
      string header = 1;

      // Optional. Defines text alignment for all cells in this column.
      HorizontalAlignment horizontal_alignment = 2;
    }

    // Row of [TableCard][google.cloud.dialogflow.v2beta1.Intent.Message.TableCard].
    message TableCardRow {
      // Optional. List of cells that make up this row.
      repeated TableCardCell cells = 1;

      // Optional. Whether to add a visual divider after this row.
      bool divider_after = 2;
    }

    // Cell of [TableCardRow][google.cloud.dialogflow.v2beta1.Intent.Message.TableCardRow].
    message TableCardCell {
      // Required. Text in this cell.
      string text = 1;
    }

    // Represents different platforms that a rich message can be intended for.
    enum Platform {
      // Not specified.
      PLATFORM_UNSPECIFIED = 0;

      // Facebook.
      FACEBOOK = 1;

      // Slack.
      SLACK = 2;

      // Telegram.
      TELEGRAM = 3;

      // Kik.
      KIK = 4;

      // Skype.
      SKYPE = 5;

      // Line.
      LINE = 6;

      // Viber.
      VIBER = 7;

      // Google Assistant
      // See [Dialogflow webhook
      // format](https://developers.google.com/assistant/actions/build/json/dialogflow-webhook-json)
      ACTIONS_ON_GOOGLE = 8;

      // Telephony Gateway.
      TELEPHONY = 10;

      // Google Hangouts.
      GOOGLE_HANGOUTS = 11;
    }

    // Required. The rich response message.
    oneof message {
      // Returns a text response.
      Text text = 1;

      // Displays an image.
      Image image = 2;

      // Displays quick replies.
      QuickReplies quick_replies = 3;

      // Displays a card.
      Card card = 4;

      // A custom platform-specific response.
      google.protobuf.Struct payload = 5;

      // Returns a voice or text-only response for Actions on Google.
      SimpleResponses simple_responses = 7;

      // Displays a basic card for Actions on Google.
      BasicCard basic_card = 8;

      // Displays suggestion chips for Actions on Google.
      Suggestions suggestions = 9;

      // Displays a link out suggestion chip for Actions on Google.
      LinkOutSuggestion link_out_suggestion = 10;

      // Displays a list card for Actions on Google.
      ListSelect list_select = 11;

      // Displays a carousel card for Actions on Google.
      CarouselSelect carousel_select = 12;

      // Plays audio from a file in Telephony Gateway.
      TelephonyPlayAudio telephony_play_audio = 13;

      // Synthesizes speech in Telephony Gateway.
      TelephonySynthesizeSpeech telephony_synthesize_speech = 14;

      // Transfers the call in Telephony Gateway.
      TelephonyTransferCall telephony_transfer_call = 15;

      // Rich Business Messaging (RBM) text response.
      //
      // RBM allows businesses to send enriched and branded versions of SMS. See
      // https://jibe.google.com/business-messaging.
      RbmText rbm_text = 18;

      // Standalone Rich Business Messaging (RBM) rich card response.
      RbmStandaloneCard rbm_standalone_rich_card = 19;

      // Rich Business Messaging (RBM) carousel rich card response.
      RbmCarouselCard rbm_carousel_rich_card = 20;

      // Browse carousel card for Actions on Google.
      BrowseCarouselCard browse_carousel_card = 22;

      // Table card for Actions on Google.
      TableCard table_card = 23;

      // The media content card for Actions on Google.
      MediaContent media_content = 24;
    }

    // Optional. The platform that this message is intended for.
    Platform platform = 6 [(google.api.field_behavior) = OPTIONAL];
  }

  // Represents a single followup intent in the chain.
  message FollowupIntentInfo {
    // The unique identifier of the followup intent.
    // Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
    string followup_intent_name = 1;

    // The unique identifier of the followup intent's parent.
    // Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
    string parent_followup_intent_name = 2;
  }

  // Represents the different states that webhooks can be in.
  enum WebhookState {
    // Webhook is disabled in the agent and in the intent.
    WEBHOOK_STATE_UNSPECIFIED = 0;

    // Webhook is enabled in the agent and in the intent.
    WEBHOOK_STATE_ENABLED = 1;

    // Webhook is enabled in the agent and in the intent. Also, each slot
    // filling prompt is forwarded to the webhook.
    WEBHOOK_STATE_ENABLED_FOR_SLOT_FILLING = 2;
  }

  // Optional. The unique identifier of this intent.
  // Required for [Intents.UpdateIntent][google.cloud.dialogflow.v2beta1.Intents.UpdateIntent] and [Intents.BatchUpdateIntents][google.cloud.dialogflow.v2beta1.Intents.BatchUpdateIntents]
  // methods.
  // Supported formats:
  //
  // - `projects/<Project ID>/agent/intents/<Intent ID>`
  // - `projects/<Project ID>/locations/<Location ID>/agent/intents/<Intent ID>`
  string name = 1 [(google.api.field_behavior) = OPTIONAL];

  // Required. The name of this intent.
  string display_name = 2 [(google.api.field_behavior) = REQUIRED];

  // Optional. Indicates whether webhooks are enabled for the intent.
  WebhookState webhook_state = 6 [(google.api.field_behavior) = OPTIONAL];

  // Optional. The priority of this intent. Higher numbers represent higher
  // priorities.
  //
  // - If the supplied value is unspecified or 0, the service
  //   translates the value to 500,000, which corresponds to the
  //   `Normal` priority in the console.
  // - If the supplied value is negative, the intent is ignored
  //   in runtime detect intent requests.
  int32 priority = 3 [(google.api.field_behavior) = OPTIONAL];

  // Optional. Indicates whether this is a fallback intent.
  bool is_fallback = 4 [(google.api.field_behavior) = OPTIONAL];

  // Optional. Indicates whether Machine Learning is enabled for the intent.
  // Note: If `ml_enabled` setting is set to false, then this intent is not
  // taken into account during inference in `ML ONLY` match mode. Also,
  // auto-markup in the UI is turned off.
  // DEPRECATED! Please use `ml_disabled` field instead.
  // NOTE: If both `ml_enabled` and `ml_disabled` are either not set or false,
  // then the default value is determined as follows:
  //
  // - Before April 15th, 2018 the default is:
  //   ml_enabled = false / ml_disabled = true.
  // - After April 15th, 2018 the default is:
  //   ml_enabled = true / ml_disabled = false.
  bool ml_enabled = 5 [
    deprecated = true,
    (google.api.field_behavior) = OPTIONAL
  ];

  // Optional. Indicates whether Machine Learning is disabled for the intent.
  // Note: If `ml_disabled` setting is set to true, then this intent is not
  // taken into account during inference in `ML ONLY` match mode. Also,
  // auto-markup in the UI is turned off.
  bool ml_disabled = 19 [(google.api.field_behavior) = OPTIONAL];

  // Optional. Indicates that this intent ends an interaction. Some integrations
  // (e.g., Actions on Google or Dialogflow phone gateway) use this information
  // to close interaction with an end user. Default is false.
  bool end_interaction = 21 [(google.api.field_behavior) = OPTIONAL];

  // Optional. The list of context names required for this intent to be
  // triggered.
  // Formats:
  //
  // - `projects/<Project ID>/agent/sessions/-/contexts/<Context ID>`
  // - `projects/<Project ID>/locations/<Location
  //   ID>/agent/sessions/-/contexts/<Context ID>`
  repeated string input_context_names = 7 [(google.api.field_behavior) = OPTIONAL];

  // Optional. The collection of event names that trigger the intent.
  // If the collection of input contexts is not empty, all of the contexts must
  // be present in the active user session for an event to trigger this intent.
  // Event names are limited to 150 characters.
  repeated string events = 8 [(google.api.field_behavior) = OPTIONAL];

  // Optional. The collection of examples that the agent is
  // trained on.
  repeated TrainingPhrase training_phrases = 9 [(google.api.field_behavior) = OPTIONAL];

  // Optional. The name of the action associated with the intent.
  // Note: The action name must not contain whitespaces.
  string action = 10 [(google.api.field_behavior) = OPTIONAL];

  // Optional. The collection of contexts that are activated when the intent
  // is matched. Context messages in this collection should not set the
  // parameters field. Setting the `lifespan_count` to 0 will reset the context
  // when the intent is matched.
  // Format: `projects/<Project ID>/agent/sessions/-/contexts/<Context ID>`.
  repeated Context output_contexts = 11 [(google.api.field_behavior) = OPTIONAL];

  // Optional. Indicates whether to delete all contexts in the current
  // session when this intent is matched.
  bool reset_contexts = 12 [(google.api.field_behavior) = OPTIONAL];

  // Optional. The collection of parameters associated with the intent.
  repeated Parameter parameters = 13 [(google.api.field_behavior) = OPTIONAL];

  // Optional. The collection of rich messages corresponding to the
  // `Response` field in the Dialogflow console.
  repeated Message messages = 14;

  // Optional. The list of platforms for which the first responses will be
  // copied from the messages in PLATFORM_UNSPECIFIED (i.e. default platform).
  repeated Message.Platform default_response_platforms = 15 [(google.api.field_behavior) = OPTIONAL];

  // Output only. The unique identifier of the root intent in the chain of
  // followup intents. It identifies the correct followup intents chain for
  // this intent.
  //
  // Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  string root_followup_intent_name = 16 [(google.api.field_behavior) = OUTPUT_ONLY];

  // Optional. The unique identifier of the parent intent in the
  // chain of followup intents. You can set this field when creating an intent,
  // for example with [CreateIntent][google.cloud.dialogflow.v2beta1.Intents.CreateIntent] or
  // [BatchUpdateIntents][google.cloud.dialogflow.v2beta1.Intents.BatchUpdateIntents], in order to make this
  // intent a followup intent.
  //
  // It identifies the parent followup intent.
  // Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  string parent_followup_intent_name = 17 [(google.api.field_behavior) = OPTIONAL];

  // Output only. Information about all followup intents that have this intent as
  // a direct or indirect parent. We populate this field only in the output.
  repeated FollowupIntentInfo followup_intent_info = 18 [(google.api.field_behavior) = OUTPUT_ONLY];
}

// The request message for [Intents.ListIntents][google.cloud.dialogflow.v2beta1.Intents.ListIntents].
message ListIntentsRequest {
  // Required. The agent to list all intents from.
  // Format: `projects/<Project ID>/agent`.
  string parent = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      child_type: "dialogflow.googleapis.com/Intent"
    }
  ];

  // Optional. The language used to access language-specific data.
  // If not specified, the agent's default language is used.
  // For more information, see
  // [Multilingual intent and entity
  // data](https://cloud.google.com/dialogflow/docs/agents-multilingual#intent-entity).
  string language_code = 2 [(google.api.field_behavior) = OPTIONAL];

  // Optional. The resource view to apply to the returned intent.
  IntentView intent_view = 3;

  // Optional. The maximum number of items to return in a single page. By
  // default 100 and at most 1000.
  int32 page_size = 4;

  // Optional. The next_page_token value returned from a previous list request.
  string page_token = 5;
}

// The response message for [Intents.ListIntents][google.cloud.dialogflow.v2beta1.Intents.ListIntents].
message ListIntentsResponse {
  // The list of agent intents. There will be a maximum number of items
  // returned based on the page_size field in the request.
  repeated Intent intents = 1;

  // Token to retrieve the next page of results, or empty if there are no
  // more results in the list.
  string next_page_token = 2;
}

// The request message for [Intents.GetIntent][google.cloud.dialogflow.v2beta1.Intents.GetIntent].
message GetIntentRequest {
  // Required. The name of the intent.
  // Supported formats:
  //
  // - `projects/<Project ID>/agent/intents/<Intent ID>`
  // - `projects/<Project ID>/locations/<Location ID>/agent/intents/<Intent ID>`
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "dialogflow.googleapis.com/Intent"
    }
  ];

  // Optional. The language used to access language-specific data.
  // If not specified, the agent's default language is used.
  // For more information, see
  // [Multilingual intent and entity
  // data](https://cloud.google.com/dialogflow/docs/agents-multilingual#intent-entity).
  string language_code = 2 [(google.api.field_behavior) = OPTIONAL];

  // Optional. The resource view to apply to the returned intent.
  IntentView intent_view = 3;
}

// The request message for [Intents.CreateIntent][google.cloud.dialogflow.v2beta1.Intents.CreateIntent].
message CreateIntentRequest {
  // Required. The agent to create a intent for.
  // Supported formats:
  //
  // - `projects/<Project ID>/agent`
  // - `projects/<Project ID>/locations/<Location ID>/agent`
  string parent = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      child_type: "dialogflow.googleapis.com/Intent"
    }
  ];

  // Required. The intent to create.
  Intent intent = 2 [(google.api.field_behavior) = REQUIRED];

  // Optional. The language used to access language-specific data.
  // If not specified, the agent's default language is used.
  // For more information, see
  // [Multilingual intent and entity
  // data](https://cloud.google.com/dialogflow/docs/agents-multilingual#intent-entity).
  string language_code = 3 [(google.api.field_behavior) = OPTIONAL];

  // Optional. The resource view to apply to the returned intent.
  IntentView intent_view = 4;
}

// The request message for [Intents.UpdateIntent][google.cloud.dialogflow.v2beta1.Intents.UpdateIntent].
message UpdateIntentRequest {
  // Required. The intent to update.
  Intent intent = 1 [(google.api.field_behavior) = REQUIRED];

  // Optional. The language used to access language-specific data.
  // If not specified, the agent's default language is used.
  // For more information, see
  // [Multilingual intent and entity
  // data](https://cloud.google.com/dialogflow/docs/agents-multilingual#intent-entity).
  string language_code = 2 [(google.api.field_behavior) = OPTIONAL];

  // Optional. The mask to control which fields get updated.
  google.protobuf.FieldMask update_mask = 3;

  // Optional. The resource view to apply to the returned intent.
  IntentView intent_view = 4;
}

// The request message for [Intents.DeleteIntent][google.cloud.dialogflow.v2beta1.Intents.DeleteIntent].
message DeleteIntentRequest {
  // Required. The name of the intent to delete. If this intent has direct or
  // indirect followup intents, we also delete them.
  //
  // Supported formats:
  //
  // - `projects/<Project ID>/agent/intents/<Intent ID>`
  // - `projects/<Project ID>/locations/<Location ID>/agent/intents/<Intent ID>`
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "dialogflow.googleapis.com/Intent"
    }
  ];
}

// The request message for [Intents.BatchUpdateIntents][google.cloud.dialogflow.v2beta1.Intents.BatchUpdateIntents].
message BatchUpdateIntentsRequest {
  // Required. The name of the agent to update or create intents in.
  // Supported formats:
  //
  // - `projects/<Project ID>/agent`
  // - `projects/<Project ID>/locations/<Location ID>/agent`
  string parent = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      child_type: "dialogflow.googleapis.com/Intent"
    }
  ];

  // Required. The source of the intent batch.
  //
  // For each intent in the batch:
  //
  // *    If `name` is specified, we update an existing intent.
  // *    If `name` is not specified, we create a new intent.
  oneof intent_batch {
    // The URI to a Google Cloud Storage file containing intents to update or
    // create. The file format can either be a serialized proto (of IntentBatch
    // type) or JSON object. Note: The URI must start with "gs://".
    string intent_batch_uri = 2;

    // The collection of intents to update or create.
    IntentBatch intent_batch_inline = 3;
  }

  // Optional. The language used to access language-specific data.
  // If not specified, the agent's default language is used.
  // For more information, see
  // [Multilingual intent and entity
  // data](https://cloud.google.com/dialogflow/docs/agents-multilingual#intent-entity).
  string language_code = 4 [(google.api.field_behavior) = OPTIONAL];

  // Optional. The mask to control which fields get updated.
  google.protobuf.FieldMask update_mask = 5;

  // Optional. The resource view to apply to the returned intent.
  IntentView intent_view = 6;
}

// The response message for [Intents.BatchUpdateIntents][google.cloud.dialogflow.v2beta1.Intents.BatchUpdateIntents].
message BatchUpdateIntentsResponse {
  // The collection of updated or created intents.
  repeated Intent intents = 1;
}

// The request message for [Intents.BatchDeleteIntents][google.cloud.dialogflow.v2beta1.Intents.BatchDeleteIntents].
message BatchDeleteIntentsRequest {
  // Required. The name of the agent to delete all entities types for.
  // Supported formats:
  //
  // - `projects/<Project ID>/agent`
  // - `projects/<Project ID>/locations/<Location ID>/agent`
  string parent = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      child_type: "dialogflow.googleapis.com/Intent"
    }
  ];

  // Required. The collection of intents to delete. Only intent `name` must be
  // filled in.
  repeated Intent intents = 2 [(google.api.field_behavior) = REQUIRED];
}

// This message is a wrapper around a collection of intents.
message IntentBatch {
  // A collection of intents.
  repeated Intent intents = 1;
}

// Represents the options for views of an intent.
// An intent can be a sizable object. Therefore, we provide a resource view that
// does not return training phrases in the response by default.
enum IntentView {
  // Training phrases field is not populated in the response.
  INTENT_VIEW_UNSPECIFIED = 0;

  // All fields are populated.
  INTENT_VIEW_FULL = 1;
}