// Copyright 2021 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.retail.v2;

import "google/api/field_behavior.proto";
import "google/protobuf/timestamp.proto";

option csharp_namespace = "Google.Cloud.Retail.V2";
option go_package = "google.golang.org/genproto/googleapis/cloud/retail/v2;retail";
option java_multiple_files = true;
option java_outer_classname = "CommonProto";
option java_package = "com.google.cloud.retail.v2";
option objc_class_prefix = "RETAIL";
option php_namespace = "Google\\Cloud\\Retail\\V2";
option ruby_package = "Google::Cloud::Retail::V2";

// At which level we offer configuration for attributes.
enum AttributeConfigLevel {
  // Value used when unset. In this case, server behavior defaults to
  // [CATALOG_LEVEL_ATTRIBUTE_CONFIG][google.cloud.retail.v2.AttributeConfigLevel.CATALOG_LEVEL_ATTRIBUTE_CONFIG].
  ATTRIBUTE_CONFIG_LEVEL_UNSPECIFIED = 0;

  // At this level, we honor the attribute configurations set in
  // [Product.attributes][google.cloud.retail.v2.Product.attributes].
  PRODUCT_LEVEL_ATTRIBUTE_CONFIG = 1;

  // At this level, we honor the attribute configurations set in
  // [CatalogConfig.attribute_configs][].
  CATALOG_LEVEL_ATTRIBUTE_CONFIG = 2;
}

// The type of solution.
enum SolutionType {
  // Default value.
  SOLUTION_TYPE_UNSPECIFIED = 0;

  // Used for Recommendations AI.
  SOLUTION_TYPE_RECOMMENDATION = 1;

  // Used for Retail Search.
  SOLUTION_TYPE_SEARCH = 2;
}

// The use case of Cloud Retail Search.
enum SearchSolutionUseCase {
  // The value when it's unspecified. In this case, server behavior defaults to
  // [SEARCH_SOLUTION_USE_CASE_SEARCH][google.cloud.retail.v2.SearchSolutionUseCase.SEARCH_SOLUTION_USE_CASE_SEARCH].
  SEARCH_SOLUTION_USE_CASE_UNSPECIFIED = 0;

  // Search use case. Expects the traffic has a non-empty
  // [query][google.cloud.retail.v2.SearchRequest.query].
  SEARCH_SOLUTION_USE_CASE_SEARCH = 1;

  // Browse use case. Expects the traffic has an empty
  // [query][google.cloud.retail.v2.SearchRequest.query].
  SEARCH_SOLUTION_USE_CASE_BROWSE = 2;
}

// Metadata that is used to define a condition that triggers an action.
// A valid condition must specify at least one of 'query_terms' or
// 'products_filter'. If multiple fields are specified, the condition is met if
// all the fields are satisfied e.g. if a set of query terms and product_filter
// are set, then only items matching the product_filter for requests with a
// query matching the query terms wil get boosted.
message Condition {
  // Query terms that we want to match on.
  message QueryTerm {
    // The value of the term to match on.
    // Value cannot be empty.
    // Value can have at most 3 terms if specified as a partial match. Each
    // space separated string is considered as one term.
    // Example) "a b c" is 3 terms and allowed, " a b c d" is 4 terms and not
    // allowed for partial match.
    string value = 1;

    // Whether this is supposed to be a full or partial match.
    bool full_match = 2;
  }

  // Used for time-dependent conditions.
  // Example: Want to have rule applied for week long sale.
  message TimeRange {
    // Start of time range. Range is inclusive.
    google.protobuf.Timestamp start_time = 1;

    // End of time range. Range is inclusive.
    google.protobuf.Timestamp end_time = 2;
  }

  // A list (up to 10 entries) of terms to match the query on. If not
  // specified, match all queries.
  // If many query terms are specified, the condition
  // is matched if any of the terms is a match (i.e. using the OR operator).
  repeated QueryTerm query_terms = 1;

  // Range of time(s) specifying when Condition is active.
  // Condition true if any time range matches.
  repeated TimeRange active_time_range = 3;
}

// A rule is a condition-action pair
// * A condition defines when a rule is to be triggered.
// * An action specifies what occurs on that trigger.
// Currently rules only work for [controls][google.cloud.retail.v2.Control] with
// [SOLUTION_TYPE_SEARCH][google.cloud.retail.v2.SolutionType.SOLUTION_TYPE_SEARCH].
message Rule {
  // A boost action to apply to results matching condition specified above.
  message BoostAction {
    // Strength of the condition boost, which must be in [-1, 1]. Negative
    // boost means demotion. Default is 0.0.
    //
    // Setting to 1.0 gives the item a big promotion. However, it does not
    // necessarily mean that the boosted item will be the top result at all
    // times, nor that other items will be excluded. Results could still be
    // shown even when none of them matches the condition. And results that
    // are significantly more relevant to the search query can still trump
    // your heavily favored but irrelevant items.
    //
    // Setting to -1.0 gives the item a big demotion. However, results that
    // are deeply relevant might still be shown. The item will have an
    // upstream battle to get a fairly high ranking, but it is not blocked out
    // completely.
    //
    // Setting to 0.0 means no boost applied. The boosting condition is
    // ignored.
    float boost = 1;

    // The filter can have a max size of 5000 characters.
    // An expression which specifies which products to apply an action to.
    // The syntax and supported fields are the same as a filter expression. See
    // [SearchRequest.filter][google.cloud.retail.v2.SearchRequest.filter] for
    // detail syntax and limitations.
    //
    // Examples:
    //
    // * To boost products with product ID "product_1" or "product_2", and
    // color
    //   "Red" or "Blue":<br>
    //   *(id: ANY("product_1", "product_2"))<br>*
    //   *AND<br>*
    //   *(colorFamilies: ANY("Red", "Blue"))<br>*
    string products_filter = 2;
  }

  // * Rule Condition:
  //   - No
  //   [Condition.query_terms][google.cloud.retail.v2.Condition.query_terms]
  //   provided is a global match.
  //   - 1 or more
  //   [Condition.query_terms][google.cloud.retail.v2.Condition.query_terms]
  //   provided are combined with OR operator.
  // * Action Input: The request query and filter that are applied to the
  // retrieved products, in addition to any filters already provided with the
  // SearchRequest. The AND operator is used to combine the query's existing
  // filters with the filter rule(s). NOTE: May result in 0 results when
  // filters conflict.
  // * Action Result: Filters the returned objects to be ONLY those that passed
  // the filter.
  message FilterAction {
    // A filter to apply on the matching condition results. Supported features:
    //
    // * [filter][google.cloud.retail.v2.Rule.FilterAction.filter] must be set.
    // * Filter syntax is identical to
    // [SearchRequest.filter][google.cloud.retail.v2.SearchRequest.filter]. See
    // more
    //   details at the Retail Search
    //   [user guide](/retail/search/docs/filter-and-order#filter).
    // * To filter products with product ID "product_1" or "product_2", and
    // color
    //   "Red" or "Blue":<br>
    //   *(id: ANY("product_1", "product_2"))<br>*
    //   *AND<br>*
    //   *(colorFamilies: ANY("Red", "Blue"))<br>*
    string filter = 1;
  }

  // Redirects a shopper to a specific page.
  //
  // * Rule Condition:
  //   - Must specify
  //   [Condition.query_terms][google.cloud.retail.v2.Condition.query_terms].
  // * Action Input: Request Query
  // * Action Result: Redirects shopper to provided uri.
  message RedirectAction {
    // URL must have length equal or less than 2000 characters.
    string redirect_uri = 1;
  }

  // Creates a set of terms that will be treated as synonyms of each other.
  // Example: synonyms of "sneakers" and "shoes".
  //  * "sneakers" will use a synonym of "shoes".
  //  * "shoes" will use a synonym of "sneakers".
  message TwowaySynonymsAction {
    // Defines a set of synonyms.
    // Can specify up to 100 synonyms.
    // Must specify at least 2 synonyms.
    repeated string synonyms = 1;
  }

  // Maps a set of terms to a set of synonyms.
  // Set of synonyms will be treated as synonyms of each query term only.
  // `query_terms` will not be treated as synonyms of each other.
  // Example: "sneakers" will use a synonym of "shoes".
  // "shoes" will not use a synonym of "sneakers".
  message OnewaySynonymsAction {
    // Terms from the search query.
    // Will treat synonyms as their synonyms.
    // Not themselves synonyms of the synonyms.
    // Can specify up to 100 terms.
    repeated string query_terms = 3;

    // Defines a set of synonyms.
    // Cannot contain duplicates.
    // Can specify up to 100 synonyms.
    repeated string synonyms = 4;

    // Will be [deprecated = true] post migration;
    repeated string oneway_terms = 2;
  }

  // Prevents `query_term` from being associated with specified terms during
  // search.
  // Example: Don't associate "gShoe" and "cheap".
  message DoNotAssociateAction {
    // Terms from the search query.
    // Will not consider do_not_associate_terms for search if in search query.
    // Can specify up to 100 terms.
    repeated string query_terms = 2;

    // Cannot contain duplicates or the query term.
    // Can specify up to 100 terms.
    repeated string do_not_associate_terms = 3;

    // Will be [deprecated = true] post migration;
    repeated string terms = 1;
  }

  // Replaces a term in the query. Multiple replacement candidates can be
  // specified. All `query_terms` will be replaced with the replacement term.
  // Example: Replace "gShoe" with "google shoe".
  message ReplacementAction {
    // Terms from the search query.
    // Will be replaced by replacement term.
    // Can specify up to 100 terms.
    repeated string query_terms = 2;

    // Term that will be used for replacement.
    string replacement_term = 3;

    // Will be [deprecated = true] post migration;
    string term = 1;
  }

  // Prevents a term in the query from being used in search.
  // Example: Don't search for "shoddy".
  message IgnoreAction {
    // Terms to ignore in the search query.
    repeated string ignore_terms = 1;
  }

  // An action must be provided.
  oneof action {
    // A boost action.
    BoostAction boost_action = 2;

    // Redirects a shopper to a specific page.
    RedirectAction redirect_action = 3;

    // Treats specific term as a synonym with a group of terms.
    // Group of terms will not be treated as synonyms with the specific term.
    OnewaySynonymsAction oneway_synonyms_action = 6;

    // Prevents term from being associated with other terms.
    DoNotAssociateAction do_not_associate_action = 7;

    // Replaces specific terms in the query.
    ReplacementAction replacement_action = 8;

    // Ignores specific terms from query during search.
    IgnoreAction ignore_action = 9;

    // Filters results.
    FilterAction filter_action = 10;

    // Treats a set of terms as synonyms of one another.
    TwowaySynonymsAction twoway_synonyms_action = 11;
  }

  // Required. The condition that triggers the rule.
  // If the condition is empty, the rule will always apply.
  Condition condition = 1 [(google.api.field_behavior) = REQUIRED];
}

// An intended audience of the [Product][google.cloud.retail.v2.Product] for
// whom it's sold.
message Audience {
  // The genders of the audience. Strongly encouraged to use the standard
  // values: "male", "female", "unisex".
  //
  // At most 5 values are allowed. Each value must be a UTF-8 encoded string
  // with a length limit of 128 characters. Otherwise, an INVALID_ARGUMENT error
  // is returned.
  //
  // Google Merchant Center property
  // [gender](https://support.google.com/merchants/answer/6324479). Schema.org
  // property
  // [Product.audience.suggestedGender](https://schema.org/suggestedGender).
  repeated string genders = 1;

  // The age groups of the audience. Strongly encouraged to use the standard
  // values: "newborn" (up to 3 months old), "infant" (3–12 months old),
  // "toddler" (1–5 years old), "kids" (5–13 years old), "adult" (typically
  // teens or older).
  //
  // At most 5 values are allowed. Each value must be a UTF-8 encoded string
  // with a length limit of 128 characters. Otherwise, an INVALID_ARGUMENT error
  // is returned.
  //
  // Google Merchant Center property
  // [age_group](https://support.google.com/merchants/answer/6324463).
  // Schema.org property
  // [Product.audience.suggestedMinAge](https://schema.org/suggestedMinAge) and
  // [Product.audience.suggestedMaxAge](https://schema.org/suggestedMaxAge).
  repeated string age_groups = 2;
}

// The color information of a [Product][google.cloud.retail.v2.Product].
message ColorInfo {
  // The standard color families. Strongly recommended to use the following
  // standard color groups: "Red", "Pink", "Orange", "Yellow", "Purple",
  // "Green", "Cyan", "Blue", "Brown", "White", "Gray", "Black" and
  // "Mixed". Normally it is expected to have only 1 color family. May consider
  // using single "Mixed" instead of multiple values.
  //
  // A maximum of 5 values are allowed. Each value must be a UTF-8 encoded
  // string with a length limit of 128 characters. Otherwise, an
  // INVALID_ARGUMENT error is returned.
  //
  // Google Merchant Center property
  // [color](https://support.google.com/merchants/answer/6324487). Schema.org
  // property [Product.color](https://schema.org/color).
  repeated string color_families = 1;

  // The color display names, which may be different from standard color family
  // names, such as the color aliases used in the website frontend. Normally
  // it is expected to have only 1 color. May consider using single "Mixed"
  // instead of multiple values.
  //
  // A maximum of 25 colors are allowed. Each value must be a UTF-8 encoded
  // string with a length limit of 128 characters. Otherwise, an
  // INVALID_ARGUMENT error is returned.
  //
  // Google Merchant Center property
  // [color](https://support.google.com/merchants/answer/6324487). Schema.org
  // property [Product.color](https://schema.org/color).
  repeated string colors = 2;
}

// A custom attribute that is not explicitly modeled in
// [Product][google.cloud.retail.v2.Product].
message CustomAttribute {
  // The textual values of this custom attribute. For example, `["yellow",
  // "green"]` when the key is "color".
  //
  // Empty string is not allowed. Otherwise, an INVALID_ARGUMENT error is
  // returned.
  //
  // Exactly one of [text][google.cloud.retail.v2.CustomAttribute.text] or
  // [numbers][google.cloud.retail.v2.CustomAttribute.numbers] should be set.
  // Otherwise, an INVALID_ARGUMENT error is returned.
  repeated string text = 1;

  // The numerical values of this custom attribute. For example, `[2.3, 15.4]`
  // when the key is "lengths_cm".
  //
  // Exactly one of [text][google.cloud.retail.v2.CustomAttribute.text] or
  // [numbers][google.cloud.retail.v2.CustomAttribute.numbers] should be set.
  // Otherwise, an INVALID_ARGUMENT error is returned.
  repeated double numbers = 2;

  // This field is normally ignored unless
  // [AttributesConfig.attribute_config_level][google.cloud.retail.v2.AttributesConfig.attribute_config_level]
  // of the [Catalog][google.cloud.retail.v2.Catalog] is set to the deprecated
  // 'PRODUCT_LEVEL_ATTRIBUTE_CONFIG' mode. For information about product-level
  // attribute configuration, see [Configuration
  // modes](https://cloud.google.com/retail/docs/attribute-config#config-modes).
  // If true, custom attribute values are searchable by text queries in
  // [SearchService.Search][google.cloud.retail.v2.SearchService.Search].
  //
  // This field is ignored in a [UserEvent][google.cloud.retail.v2.UserEvent].
  //
  // Only set if type [text][google.cloud.retail.v2.CustomAttribute.text] is
  // set. Otherwise, a INVALID_ARGUMENT error is returned.
  optional bool searchable = 3 [deprecated = true];

  // This field is normally ignored unless
  // [AttributesConfig.attribute_config_level][google.cloud.retail.v2.AttributesConfig.attribute_config_level]
  // of the [Catalog][google.cloud.retail.v2.Catalog] is set to the deprecated
  // 'PRODUCT_LEVEL_ATTRIBUTE_CONFIG' mode. For information about product-level
  // attribute configuration, see [Configuration
  // modes](https://cloud.google.com/retail/docs/attribute-config#config-modes).
  // If true, custom attribute values are indexed, so that they can be filtered,
  // faceted or boosted in
  // [SearchService.Search][google.cloud.retail.v2.SearchService.Search].
  //
  // This field is ignored in a [UserEvent][google.cloud.retail.v2.UserEvent].
  //
  // See [SearchRequest.filter][google.cloud.retail.v2.SearchRequest.filter],
  // [SearchRequest.facet_specs][google.cloud.retail.v2.SearchRequest.facet_specs]
  // and
  // [SearchRequest.boost_spec][google.cloud.retail.v2.SearchRequest.boost_spec]
  // for more details.
  optional bool indexable = 4 [deprecated = true];
}

// Fulfillment information, such as the store IDs for in-store pickup or region
// IDs for different shipping methods.
message FulfillmentInfo {
  // The fulfillment type, including commonly used types (such as pickup in
  // store and same day delivery), and custom types. Customers have to map
  // custom types to their display names before rendering UI.
  //
  // Supported values:
  //
  // * "pickup-in-store"
  // * "ship-to-store"
  // * "same-day-delivery"
  // * "next-day-delivery"
  // * "custom-type-1"
  // * "custom-type-2"
  // * "custom-type-3"
  // * "custom-type-4"
  // * "custom-type-5"
  //
  // If this field is set to an invalid value other than these, an
  // INVALID_ARGUMENT error is returned.
  string type = 1;

  // The IDs for this [type][google.cloud.retail.v2.FulfillmentInfo.type], such
  // as the store IDs for
  // [FulfillmentInfo.type.pickup-in-store][google.cloud.retail.v2.FulfillmentInfo.type]
  // or the region IDs for
  // [FulfillmentInfo.type.same-day-delivery][google.cloud.retail.v2.FulfillmentInfo.type].
  //
  // A maximum of 3000 values are allowed. Each value must be a string with a
  // length limit of 30 characters, matching the pattern `[a-zA-Z0-9_-]+`, such
  // as "store1" or "REGION-2". Otherwise, an INVALID_ARGUMENT error is
  // returned.
  repeated string place_ids = 2;
}

// [Product][google.cloud.retail.v2.Product] image. Recommendations AI and
// Retail Search do not use product images to improve prediction and search
// results. However, product images can be returned in results, and are shown in
// prediction or search previews in the console.
message Image {
  // Required. URI of the image.
  //
  // This field must be a valid UTF-8 encoded URI with a length limit of 5,000
  // characters. Otherwise, an INVALID_ARGUMENT error is returned.
  //
  // Google Merchant Center property
  // [image_link](https://support.google.com/merchants/answer/6324350).
  // Schema.org property [Product.image](https://schema.org/image).
  string uri = 1 [(google.api.field_behavior) = REQUIRED];

  // Height of the image in number of pixels.
  //
  // This field must be nonnegative. Otherwise, an INVALID_ARGUMENT error is
  // returned.
  int32 height = 2;

  // Width of the image in number of pixels.
  //
  // This field must be nonnegative. Otherwise, an INVALID_ARGUMENT error is
  // returned.
  int32 width = 3;
}

// A floating point interval.
message Interval {
  // The lower bound of the interval. If neither of the min fields are set, then
  // the lower bound is negative infinity.
  //
  // This field must not be larger than max.
  // Otherwise, an INVALID_ARGUMENT error is returned.
  oneof min {
    // Inclusive lower bound.
    double minimum = 1;

    // Exclusive lower bound.
    double exclusive_minimum = 2;
  }

  // The upper bound of the interval. If neither of the max fields are set, then
  // the upper bound is positive infinity.
  //
  // This field must be not smaller than min.
  // Otherwise, an INVALID_ARGUMENT error is returned.
  oneof max {
    // Inclusive upper bound.
    double maximum = 3;

    // Exclusive upper bound.
    double exclusive_maximum = 4;
  }
}

// The price information of a [Product][google.cloud.retail.v2.Product].
message PriceInfo {
  // The price range of all
  // [variant][google.cloud.retail.v2.Product.Type.VARIANT]
  // [Product][google.cloud.retail.v2.Product] having the same
  // [Product.primary_product_id][google.cloud.retail.v2.Product.primary_product_id].
  message PriceRange {
    // The inclusive
    // [Product.pricing_info.price][google.cloud.retail.v2.PriceInfo.price]
    // interval of all [variant][google.cloud.retail.v2.Product.Type.VARIANT]
    // [Product][google.cloud.retail.v2.Product] having the same
    // [Product.primary_product_id][google.cloud.retail.v2.Product.primary_product_id].
    Interval price = 1;

    // The inclusive
    // [Product.pricing_info.original_price][google.cloud.retail.v2.PriceInfo.original_price]
    // internal of all [variant][google.cloud.retail.v2.Product.Type.VARIANT]
    // [Product][google.cloud.retail.v2.Product] having the same
    // [Product.primary_product_id][google.cloud.retail.v2.Product.primary_product_id].
    Interval original_price = 2;
  }

  // The 3-letter currency code defined in [ISO
  // 4217](https://www.iso.org/iso-4217-currency-codes.html).
  //
  // If this field is an unrecognizable currency code, an INVALID_ARGUMENT
  // error is returned.
  //
  // The [Product.Type.VARIANT][google.cloud.retail.v2.Product.Type.VARIANT]
  // [Product][google.cloud.retail.v2.Product]s with the same
  // [Product.primary_product_id][google.cloud.retail.v2.Product.primary_product_id]
  // must share the same
  // [currency_code][google.cloud.retail.v2.PriceInfo.currency_code]. Otherwise,
  // a FAILED_PRECONDITION error is returned.
  string currency_code = 1;

  // Price of the product.
  //
  // Google Merchant Center property
  // [price](https://support.google.com/merchants/answer/6324371). Schema.org
  // property [Offer.price](https://schema.org/price).
  float price = 2;

  // Price of the product without any discount. If zero, by default set to be
  // the [price][google.cloud.retail.v2.PriceInfo.price]. If set,
  // [original_price][google.cloud.retail.v2.PriceInfo.original_price] should be
  // greater than or equal to [price][google.cloud.retail.v2.PriceInfo.price],
  // otherwise an INVALID_ARGUMENT error is thrown.
  float original_price = 3;

  // The costs associated with the sale of a particular product. Used for gross
  // profit reporting.
  //
  // * Profit = [price][google.cloud.retail.v2.PriceInfo.price] -
  // [cost][google.cloud.retail.v2.PriceInfo.cost]
  //
  // Google Merchant Center property
  // [cost_of_goods_sold](https://support.google.com/merchants/answer/9017895).
  float cost = 4;

  // The timestamp when the [price][google.cloud.retail.v2.PriceInfo.price]
  // starts to be effective. This can be set as a future timestamp, and the
  // [price][google.cloud.retail.v2.PriceInfo.price] is only used for search
  // after
  // [price_effective_time][google.cloud.retail.v2.PriceInfo.price_effective_time].
  // If so, the
  // [original_price][google.cloud.retail.v2.PriceInfo.original_price] must be
  // set and [original_price][google.cloud.retail.v2.PriceInfo.original_price]
  // is used before
  // [price_effective_time][google.cloud.retail.v2.PriceInfo.price_effective_time].
  //
  // Do not set if [price][google.cloud.retail.v2.PriceInfo.price] is always
  // effective because it will cause additional latency during search.
  google.protobuf.Timestamp price_effective_time = 5;

  // The timestamp when the [price][google.cloud.retail.v2.PriceInfo.price]
  // stops to be effective. The [price][google.cloud.retail.v2.PriceInfo.price]
  // is used for search before
  // [price_expire_time][google.cloud.retail.v2.PriceInfo.price_expire_time]. If
  // this field is set, the
  // [original_price][google.cloud.retail.v2.PriceInfo.original_price] must be
  // set and [original_price][google.cloud.retail.v2.PriceInfo.original_price]
  // is used after
  // [price_expire_time][google.cloud.retail.v2.PriceInfo.price_expire_time].
  //
  // Do not set if [price][google.cloud.retail.v2.PriceInfo.price] is always
  // effective because it will cause additional latency during search.
  google.protobuf.Timestamp price_expire_time = 6;

  // Output only. The price range of all the child
  // [Product.Type.VARIANT][google.cloud.retail.v2.Product.Type.VARIANT]
  // [Product][google.cloud.retail.v2.Product]s grouped together on the
  // [Product.Type.PRIMARY][google.cloud.retail.v2.Product.Type.PRIMARY]
  // [Product][google.cloud.retail.v2.Product]. Only populated for
  // [Product.Type.PRIMARY][google.cloud.retail.v2.Product.Type.PRIMARY]
  // [Product][google.cloud.retail.v2.Product]s.
  //
  // Note: This field is OUTPUT_ONLY for
  // [ProductService.GetProduct][google.cloud.retail.v2.ProductService.GetProduct].
  // Do not set this field in API requests.
  PriceRange price_range = 7 [(google.api.field_behavior) = OUTPUT_ONLY];
}

// The rating of a [Product][google.cloud.retail.v2.Product].
message Rating {
  // The total number of ratings. This value is independent of the value of
  // [rating_histogram][google.cloud.retail.v2.Rating.rating_histogram].
  //
  // This value must be nonnegative. Otherwise, an INVALID_ARGUMENT error is
  // returned.
  int32 rating_count = 1;

  // The average rating of the [Product][google.cloud.retail.v2.Product].
  //
  // The rating is scaled at 1-5. Otherwise, an INVALID_ARGUMENT error is
  // returned.
  float average_rating = 2;

  // List of rating counts per rating value (index = rating - 1). The list is
  // empty if there is no rating. If the list is non-empty, its size is
  // always 5. Otherwise, an INVALID_ARGUMENT error is returned.
  //
  // For example, [41, 14, 13, 47, 303]. It means that the
  // [Product][google.cloud.retail.v2.Product] got 41 ratings with 1 star, 14
  // ratings with 2 star, and so on.
  repeated int32 rating_histogram = 3;
}

// Information of an end user.
message UserInfo {
  // Highly recommended for logged-in users. Unique identifier for logged-in
  // user, such as a user name. Don't set for anonymous users.
  //
  // Always use a hashed value for this ID.
  //
  // Don't set the field to the same fixed ID for different users. This mixes
  // the event history of those users together, which results in degraded
  // model quality.
  //
  // The field must be a UTF-8 encoded string with a length limit of 128
  // characters. Otherwise, an INVALID_ARGUMENT error is returned.
  string user_id = 1;

  // The end user's IP address. This field is used to extract location
  // information for personalization.
  //
  // This field must be either an IPv4 address (e.g. "104.133.9.80") or an IPv6
  // address (e.g. "2001:0db8:85a3:0000:0000:8a2e:0370:7334"). Otherwise, an
  // INVALID_ARGUMENT error is returned.
  //
  // This should not be set when:
  //
  // * setting
  // [SearchRequest.user_info][google.cloud.retail.v2.SearchRequest.user_info].
  // * using the JavaScript tag in
  // [UserEventService.CollectUserEvent][google.cloud.retail.v2.UserEventService.CollectUserEvent]
  // or if
  // [direct_user_request][google.cloud.retail.v2.UserInfo.direct_user_request]
  // is set.
  string ip_address = 2;

  // User agent as included in the HTTP header. Required for getting
  // [SearchResponse.sponsored_results][google.cloud.retail.v2.SearchResponse.sponsored_results].
  //
  // The field must be a UTF-8 encoded string with a length limit of 1,000
  // characters. Otherwise, an INVALID_ARGUMENT error is returned.
  //
  // This should not be set when using the client side event reporting with
  // GTM or JavaScript tag in
  // [UserEventService.CollectUserEvent][google.cloud.retail.v2.UserEventService.CollectUserEvent]
  // or if
  // [direct_user_request][google.cloud.retail.v2.UserInfo.direct_user_request]
  // is set.
  string user_agent = 3;

  // True if the request is made directly from the end user, in which case the
  // [ip_address][google.cloud.retail.v2.UserInfo.ip_address] and
  // [user_agent][google.cloud.retail.v2.UserInfo.user_agent] can be populated
  // from the HTTP request. This flag should be set only if the API request is
  // made directly from the end user such as a mobile app (and not if a gateway
  // or a server is processing and pushing the user events).
  //
  // This should not be set when using the JavaScript tag in
  // [UserEventService.CollectUserEvent][google.cloud.retail.v2.UserEventService.CollectUserEvent].
  bool direct_user_request = 4;
}

// The inventory information at a place (e.g. a store) identified
// by a place ID.
message LocalInventory {
  // The place ID for the current set of inventory information.
  string place_id = 1;

  // Product price and cost information.
  //
  // Google Merchant Center property
  // [price](https://support.google.com/merchants/answer/6324371).
  PriceInfo price_info = 2;

  // Additional local inventory attributes, for example, store name, promotion
  // tags, etc.
  //
  // This field needs to pass all below criteria, otherwise an INVALID_ARGUMENT
  // error is returned:
  //
  // * At most 30 attributes are allowed.
  // * The key must be a UTF-8 encoded string with a length limit of 32
  //   characters.
  // * The key must match the pattern: `[a-zA-Z0-9][a-zA-Z0-9_]*`. For example,
  //   key0LikeThis or KEY_1_LIKE_THIS.
  // * The attribute values must be of the same type (text or number).
  // * Only 1 value is allowed for each attribute.
  // * For text values, the length limit is 256 UTF-8 characters.
  // * The attribute does not support search. The `searchable` field should be
  //   unset or set to false.
  // * The max summed total bytes of custom attribute keys and values per
  //   product is 5MiB.
  map<string, CustomAttribute> attributes = 3;

  // Input only. Supported fulfillment types. Valid fulfillment type values
  // include commonly used types (such as pickup in store and same day
  // delivery), and custom types. Customers have to map custom types to their
  // display names before rendering UI.
  //
  // Supported values:
  //
  // * "pickup-in-store"
  // * "ship-to-store"
  // * "same-day-delivery"
  // * "next-day-delivery"
  // * "custom-type-1"
  // * "custom-type-2"
  // * "custom-type-3"
  // * "custom-type-4"
  // * "custom-type-5"
  //
  // If this field is set to an invalid value other than these, an
  // INVALID_ARGUMENT error is returned.
  //
  // All the elements must be distinct. Otherwise, an INVALID_ARGUMENT error is
  // returned.
  repeated string fulfillment_types = 4
      [(google.api.field_behavior) = INPUT_ONLY];
}