// Copyright 2024 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.documentai.v1;

import "google/api/annotations.proto";
import "google/api/client.proto";
import "google/api/field_behavior.proto";
import "google/api/resource.proto";
import "google/cloud/documentai/v1/document.proto";
import "google/cloud/documentai/v1/document_io.proto";
import "google/cloud/documentai/v1/document_schema.proto";
import "google/cloud/documentai/v1/evaluation.proto";
import "google/cloud/documentai/v1/operation_metadata.proto";
import "google/cloud/documentai/v1/processor.proto";
import "google/cloud/documentai/v1/processor_type.proto";
import "google/longrunning/operations.proto";
import "google/protobuf/empty.proto";
import "google/protobuf/field_mask.proto";
import "google/protobuf/timestamp.proto";
import "google/rpc/status.proto";

option csharp_namespace = "Google.Cloud.DocumentAI.V1";
option go_package = "cloud.google.com/go/documentai/apiv1/documentaipb;documentaipb";
option java_multiple_files = true;
option java_outer_classname = "DocumentAiProcessorService";
option java_package = "com.google.cloud.documentai.v1";
option php_namespace = "Google\\Cloud\\DocumentAI\\V1";
option ruby_package = "Google::Cloud::DocumentAI::V1";
option (google.api.resource_definition) = {
  type: "documentai.googleapis.com/HumanReviewConfig"
  pattern: "projects/{project}/locations/{location}/processors/{processor}/humanReviewConfig"
};
option (google.api.resource_definition) = {
  type: "documentai.googleapis.com/Location"
  pattern: "projects/{project}/locations/{location}"
};

// Service to call Document AI to process documents according to the
// processor's definition. Processors are built using state-of-the-art Google
// AI such as natural language, computer vision, and translation to extract
// structured information from unstructured or semi-structured documents.
service DocumentProcessorService {
  option (google.api.default_host) = "documentai.googleapis.com";
  option (google.api.oauth_scopes) =
      "https://www.googleapis.com/auth/cloud-platform";

  // Processes a single document.
  rpc ProcessDocument(ProcessRequest) returns (ProcessResponse) {
    option (google.api.http) = {
      post: "/v1/{name=projects/*/locations/*/processors/*}:process"
      body: "*"
      additional_bindings {
        post: "/v1/{name=projects/*/locations/*/processors/*/processorVersions/*}:process"
        body: "*"
      }
    };
    option (google.api.method_signature) = "name";
  }

  // LRO endpoint to batch process many documents. The output is written
  // to Cloud Storage as JSON in the [Document] format.
  rpc BatchProcessDocuments(BatchProcessRequest)
      returns (google.longrunning.Operation) {
    option (google.api.http) = {
      post: "/v1/{name=projects/*/locations/*/processors/*}:batchProcess"
      body: "*"
      additional_bindings {
        post: "/v1/{name=projects/*/locations/*/processors/*/processorVersions/*}:batchProcess"
        body: "*"
      }
    };
    option (google.api.method_signature) = "name";
    option (google.longrunning.operation_info) = {
      response_type: "BatchProcessResponse"
      metadata_type: "BatchProcessMetadata"
    };
  }

  // Fetches processor types. Note that we don't use
  // [ListProcessorTypes][google.cloud.documentai.v1.DocumentProcessorService.ListProcessorTypes]
  // here, because it isn't paginated.
  rpc FetchProcessorTypes(FetchProcessorTypesRequest)
      returns (FetchProcessorTypesResponse) {
    option (google.api.http) = {
      get: "/v1/{parent=projects/*/locations/*}:fetchProcessorTypes"
    };
    option (google.api.method_signature) = "parent";
  }

  // Lists the processor types that exist.
  rpc ListProcessorTypes(ListProcessorTypesRequest)
      returns (ListProcessorTypesResponse) {
    option (google.api.http) = {
      get: "/v1/{parent=projects/*/locations/*}/processorTypes"
    };
    option (google.api.method_signature) = "parent";
  }

  // Gets a processor type detail.
  rpc GetProcessorType(GetProcessorTypeRequest) returns (ProcessorType) {
    option (google.api.http) = {
      get: "/v1/{name=projects/*/locations/*/processorTypes/*}"
    };
    option (google.api.method_signature) = "name";
  }

  // Lists all processors which belong to this project.
  rpc ListProcessors(ListProcessorsRequest) returns (ListProcessorsResponse) {
    option (google.api.http) = {
      get: "/v1/{parent=projects/*/locations/*}/processors"
    };
    option (google.api.method_signature) = "parent";
  }

  // Gets a processor detail.
  rpc GetProcessor(GetProcessorRequest) returns (Processor) {
    option (google.api.http) = {
      get: "/v1/{name=projects/*/locations/*/processors/*}"
    };
    option (google.api.method_signature) = "name";
  }

  // Trains a new processor version.
  // Operation metadata is returned as
  // [TrainProcessorVersionMetadata][google.cloud.documentai.v1.TrainProcessorVersionMetadata].
  rpc TrainProcessorVersion(TrainProcessorVersionRequest)
      returns (google.longrunning.Operation) {
    option (google.api.http) = {
      post: "/v1/{parent=projects/*/locations/*/processors/*}/processorVersions:train"
      body: "*"
    };
    option (google.api.method_signature) = "parent,processor_version";
    option (google.longrunning.operation_info) = {
      response_type: "TrainProcessorVersionResponse"
      metadata_type: "TrainProcessorVersionMetadata"
    };
  }

  // Gets a processor version detail.
  rpc GetProcessorVersion(GetProcessorVersionRequest)
      returns (ProcessorVersion) {
    option (google.api.http) = {
      get: "/v1/{name=projects/*/locations/*/processors/*/processorVersions/*}"
    };
    option (google.api.method_signature) = "name";
  }

  // Lists all versions of a processor.
  rpc ListProcessorVersions(ListProcessorVersionsRequest)
      returns (ListProcessorVersionsResponse) {
    option (google.api.http) = {
      get: "/v1/{parent=projects/*/locations/*/processors/*}/processorVersions"
    };
    option (google.api.method_signature) = "parent";
  }

  // Deletes the processor version, all artifacts under the processor version
  // will be deleted.
  rpc DeleteProcessorVersion(DeleteProcessorVersionRequest)
      returns (google.longrunning.Operation) {
    option (google.api.http) = {
      delete: "/v1/{name=projects/*/locations/*/processors/*/processorVersions/*}"
    };
    option (google.api.method_signature) = "name";
    option (google.longrunning.operation_info) = {
      response_type: "google.protobuf.Empty"
      metadata_type: "DeleteProcessorVersionMetadata"
    };
  }

  // Deploys the processor version.
  rpc DeployProcessorVersion(DeployProcessorVersionRequest)
      returns (google.longrunning.Operation) {
    option (google.api.http) = {
      post: "/v1/{name=projects/*/locations/*/processors/*/processorVersions/*}:deploy"
      body: "*"
    };
    option (google.api.method_signature) = "name";
    option (google.longrunning.operation_info) = {
      response_type: "DeployProcessorVersionResponse"
      metadata_type: "DeployProcessorVersionMetadata"
    };
  }

  // Undeploys the processor version.
  rpc UndeployProcessorVersion(UndeployProcessorVersionRequest)
      returns (google.longrunning.Operation) {
    option (google.api.http) = {
      post: "/v1/{name=projects/*/locations/*/processors/*/processorVersions/*}:undeploy"
      body: "*"
    };
    option (google.api.method_signature) = "name";
    option (google.longrunning.operation_info) = {
      response_type: "UndeployProcessorVersionResponse"
      metadata_type: "UndeployProcessorVersionMetadata"
    };
  }

  // Creates a processor from the
  // [ProcessorType][google.cloud.documentai.v1.ProcessorType] provided. The
  // processor will be at `ENABLED` state by default after its creation. Note
  // that this method requires the `documentai.processors.create` permission on
  // the project, which is highly privileged. A user or service account with
  // this permission can create new processors that can interact with any gcs
  // bucket in your project.
  rpc CreateProcessor(CreateProcessorRequest) returns (Processor) {
    option (google.api.http) = {
      post: "/v1/{parent=projects/*/locations/*}/processors"
      body: "processor"
    };
    option (google.api.method_signature) = "parent,processor";
  }

  // Deletes the processor, unloads all deployed model artifacts if it was
  // enabled and then deletes all artifacts associated with this processor.
  rpc DeleteProcessor(DeleteProcessorRequest)
      returns (google.longrunning.Operation) {
    option (google.api.http) = {
      delete: "/v1/{name=projects/*/locations/*/processors/*}"
    };
    option (google.api.method_signature) = "name";
    option (google.longrunning.operation_info) = {
      response_type: "google.protobuf.Empty"
      metadata_type: "DeleteProcessorMetadata"
    };
  }

  // Enables a processor
  rpc EnableProcessor(EnableProcessorRequest)
      returns (google.longrunning.Operation) {
    option (google.api.http) = {
      post: "/v1/{name=projects/*/locations/*/processors/*}:enable"
      body: "*"
    };
    option (google.longrunning.operation_info) = {
      response_type: "EnableProcessorResponse"
      metadata_type: "EnableProcessorMetadata"
    };
  }

  // Disables a processor
  rpc DisableProcessor(DisableProcessorRequest)
      returns (google.longrunning.Operation) {
    option (google.api.http) = {
      post: "/v1/{name=projects/*/locations/*/processors/*}:disable"
      body: "*"
    };
    option (google.longrunning.operation_info) = {
      response_type: "DisableProcessorResponse"
      metadata_type: "DisableProcessorMetadata"
    };
  }

  // Set the default (active) version of a
  // [Processor][google.cloud.documentai.v1.Processor] that will be used in
  // [ProcessDocument][google.cloud.documentai.v1.DocumentProcessorService.ProcessDocument]
  // and
  // [BatchProcessDocuments][google.cloud.documentai.v1.DocumentProcessorService.BatchProcessDocuments].
  rpc SetDefaultProcessorVersion(SetDefaultProcessorVersionRequest)
      returns (google.longrunning.Operation) {
    option (google.api.http) = {
      post: "/v1/{processor=projects/*/locations/*/processors/*}:setDefaultProcessorVersion"
      body: "*"
    };
    option (google.longrunning.operation_info) = {
      response_type: "SetDefaultProcessorVersionResponse"
      metadata_type: "SetDefaultProcessorVersionMetadata"
    };
  }

  // Send a document for Human Review. The input document should be processed by
  // the specified processor.
  rpc ReviewDocument(ReviewDocumentRequest)
      returns (google.longrunning.Operation) {
    option (google.api.http) = {
      post: "/v1/{human_review_config=projects/*/locations/*/processors/*/humanReviewConfig}:reviewDocument"
      body: "*"
    };
    option (google.api.method_signature) = "human_review_config";
    option (google.longrunning.operation_info) = {
      response_type: "ReviewDocumentResponse"
      metadata_type: "ReviewDocumentOperationMetadata"
    };
  }

  // Evaluates a ProcessorVersion against annotated documents, producing an
  // Evaluation.
  rpc EvaluateProcessorVersion(EvaluateProcessorVersionRequest)
      returns (google.longrunning.Operation) {
    option (google.api.http) = {
      post: "/v1/{processor_version=projects/*/locations/*/processors/*/processorVersions/*}:evaluateProcessorVersion"
      body: "*"
    };
    option (google.api.method_signature) = "processor_version";
    option (google.longrunning.operation_info) = {
      response_type: "EvaluateProcessorVersionResponse"
      metadata_type: "EvaluateProcessorVersionMetadata"
    };
  }

  // Retrieves a specific evaluation.
  rpc GetEvaluation(GetEvaluationRequest) returns (Evaluation) {
    option (google.api.http) = {
      get: "/v1/{name=projects/*/locations/*/processors/*/processorVersions/*/evaluations/*}"
    };
    option (google.api.method_signature) = "name";
  }

  // Retrieves a set of evaluations for a given processor version.
  rpc ListEvaluations(ListEvaluationsRequest)
      returns (ListEvaluationsResponse) {
    option (google.api.http) = {
      get: "/v1/{parent=projects/*/locations/*/processors/*/processorVersions/*}/evaluations"
    };
    option (google.api.method_signature) = "parent";
  }
}

// Options for Process API
message ProcessOptions {
  // Serving config for layout parser processor.
  message LayoutConfig {
    // Serving config for chunking.
    message ChunkingConfig {
      // Optional. The chunk sizes to use when splitting documents, in order of
      // level.
      int32 chunk_size = 1 [(google.api.field_behavior) = OPTIONAL];

      // Optional. Whether or not to include ancestor headings when splitting.
      bool include_ancestor_headings = 2
          [(google.api.field_behavior) = OPTIONAL];
    }

    // Optional. Config for chunking in layout parser processor.
    ChunkingConfig chunking_config = 1 [(google.api.field_behavior) = OPTIONAL];
  }

  // A list of individual page numbers.
  message IndividualPageSelector {
    // Optional. Indices of the pages (starting from 1).
    repeated int32 pages = 1 [(google.api.field_behavior) = OPTIONAL];
  }

  // A subset of pages to process. If not specified, all pages are processed.
  // If a page range is set, only the given pages are extracted and processed
  // from the document. In the output document,
  // [Document.Page.page_number][google.cloud.documentai.v1.Document.Page.page_number]
  // refers to the page number in the original document. This configuration
  // only applies to sync requests.
  oneof page_range {
    // Which pages to process (1-indexed).
    IndividualPageSelector individual_page_selector = 5;

    // Only process certain pages from the start. Process all if the document
    // has fewer pages.
    int32 from_start = 6;

    // Only process certain pages from the end, same as above.
    int32 from_end = 7;
  }

  // Only applicable to `OCR_PROCESSOR` and `FORM_PARSER_PROCESSOR`.
  // Returns error if set on other processor types.
  OcrConfig ocr_config = 1;

  // Optional. Only applicable to `LAYOUT_PARSER_PROCESSOR`.
  // Returns error if set on other processor types.
  LayoutConfig layout_config = 9 [(google.api.field_behavior) = OPTIONAL];

  // Optional. Override the schema of the
  // [ProcessorVersion][google.cloud.documentai.v1.ProcessorVersion]. Will
  // return an Invalid Argument error if this field is set when the underlying
  // [ProcessorVersion][google.cloud.documentai.v1.ProcessorVersion] doesn't
  // support schema override.
  DocumentSchema schema_override = 8 [(google.api.field_behavior) = OPTIONAL];
}

// Request message for the
// [ProcessDocument][google.cloud.documentai.v1.DocumentProcessorService.ProcessDocument]
// method.
message ProcessRequest {
  // The document payload.
  oneof source {
    // An inline document proto.
    Document inline_document = 4;

    // A raw document content (bytes).
    RawDocument raw_document = 5;

    // A raw document on Google Cloud Storage.
    GcsDocument gcs_document = 8;
  }

  // Required. The resource name of the
  // [Processor][google.cloud.documentai.v1.Processor] or
  // [ProcessorVersion][google.cloud.documentai.v1.ProcessorVersion]
  // to use for processing. If a
  // [Processor][google.cloud.documentai.v1.Processor] is specified, the server
  // will use its [default
  // version][google.cloud.documentai.v1.Processor.default_processor_version].
  // Format: `projects/{project}/locations/{location}/processors/{processor}`,
  // or
  // `projects/{project}/locations/{location}/processors/{processor}/processorVersions/{processorVersion}`
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = { type: "*" }
  ];

  // Whether human review should be skipped for this request. Default to
  // `false`.
  bool skip_human_review = 3;

  // Specifies which fields to include in the
  // [ProcessResponse.document][google.cloud.documentai.v1.ProcessResponse.document]
  // output. Only supports top-level document and pages field, so it must be in
  // the form of `{document_field_name}` or `pages.{page_field_name}`.
  google.protobuf.FieldMask field_mask = 6;

  // Inference-time options for the process API
  ProcessOptions process_options = 7;

  // Optional. The labels with user-defined metadata for the request.
  //
  // Label keys and values can be no longer than 63 characters
  // (Unicode codepoints) and can only contain lowercase letters, numeric
  // characters, underscores, and dashes. International characters are allowed.
  // Label values are optional. Label keys must start with a letter.
  map<string, string> labels = 10 [(google.api.field_behavior) = OPTIONAL];

  // Optional. Option to remove images from the document.
  bool imageless_mode = 11 [(google.api.field_behavior) = OPTIONAL];
}

// The status of human review on a processed document.
message HumanReviewStatus {
  // The final state of human review on a processed document.
  enum State {
    // Human review state is unspecified. Most likely due to an internal error.
    STATE_UNSPECIFIED = 0;

    // Human review is skipped for the document. This can happen because human
    // review isn't enabled on the processor or the processing request has
    // been set to skip this document.
    SKIPPED = 1;

    // Human review validation is triggered and passed, so no review is needed.
    VALIDATION_PASSED = 2;

    // Human review validation is triggered and the document is under review.
    IN_PROGRESS = 3;

    // Some error happened during triggering human review, see the
    // [state_message][google.cloud.documentai.v1.HumanReviewStatus.state_message]
    // for details.
    ERROR = 4;
  }

  // The state of human review on the processing request.
  State state = 1;

  // A message providing more details about the human review state.
  string state_message = 2;

  // The name of the operation triggered by the processed document. This field
  // is populated only when the
  // [state][google.cloud.documentai.v1.HumanReviewStatus.state] is
  // `HUMAN_REVIEW_IN_PROGRESS`. It has the same response type and metadata as
  // the long-running operation returned by
  // [ReviewDocument][google.cloud.documentai.v1.DocumentProcessorService.ReviewDocument].
  string human_review_operation = 3;
}

// Response message for the
// [ProcessDocument][google.cloud.documentai.v1.DocumentProcessorService.ProcessDocument]
// method.
message ProcessResponse {
  // The document payload, will populate fields based on the processor's
  // behavior.
  Document document = 1;

  // The status of human review on the processed document.
  HumanReviewStatus human_review_status = 3;
}

// Request message for
// [BatchProcessDocuments][google.cloud.documentai.v1.DocumentProcessorService.BatchProcessDocuments].
message BatchProcessRequest {
  // Required. The resource name of
  // [Processor][google.cloud.documentai.v1.Processor] or
  // [ProcessorVersion][google.cloud.documentai.v1.ProcessorVersion].
  // Format: `projects/{project}/locations/{location}/processors/{processor}`,
  // or
  // `projects/{project}/locations/{location}/processors/{processor}/processorVersions/{processorVersion}`
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = { type: "*" }
  ];

  // The input documents for the
  // [BatchProcessDocuments][google.cloud.documentai.v1.DocumentProcessorService.BatchProcessDocuments]
  // method.
  BatchDocumentsInputConfig input_documents = 5;

  // The output configuration for the
  // [BatchProcessDocuments][google.cloud.documentai.v1.DocumentProcessorService.BatchProcessDocuments]
  // method.
  DocumentOutputConfig document_output_config = 6;

  // Whether human review should be skipped for this request. Default to
  // `false`.
  bool skip_human_review = 4;

  // Inference-time options for the process API
  ProcessOptions process_options = 7;

  // Optional. The labels with user-defined metadata for the request.
  //
  // Label keys and values can be no longer than 63 characters
  // (Unicode codepoints) and can only contain lowercase letters, numeric
  // characters, underscores, and dashes. International characters are allowed.
  // Label values are optional. Label keys must start with a letter.
  map<string, string> labels = 9 [(google.api.field_behavior) = OPTIONAL];
}

// Response message for
// [BatchProcessDocuments][google.cloud.documentai.v1.DocumentProcessorService.BatchProcessDocuments].
message BatchProcessResponse {}

// The long-running operation metadata for
// [BatchProcessDocuments][google.cloud.documentai.v1.DocumentProcessorService.BatchProcessDocuments].
message BatchProcessMetadata {
  // The status of a each individual document in the batch process.
  message IndividualProcessStatus {
    // The source of the document, same as the
    // [input_gcs_source][google.cloud.documentai.v1.BatchProcessMetadata.IndividualProcessStatus.input_gcs_source]
    // field in the request when the batch process started.
    string input_gcs_source = 1;

    // The status processing the document.
    google.rpc.Status status = 2;

    // The Cloud Storage output destination (in the request as
    // [DocumentOutputConfig.GcsOutputConfig.gcs_uri][google.cloud.documentai.v1.DocumentOutputConfig.GcsOutputConfig.gcs_uri])
    // of the processed document if it was successful, otherwise empty.
    string output_gcs_destination = 3;

    // The status of human review on the processed document.
    HumanReviewStatus human_review_status = 5;
  }

  // Possible states of the batch processing operation.
  enum State {
    // The default value. This value is used if the state is omitted.
    STATE_UNSPECIFIED = 0;

    // Request operation is waiting for scheduling.
    WAITING = 1;

    // Request is being processed.
    RUNNING = 2;

    // The batch processing completed successfully.
    SUCCEEDED = 3;

    // The batch processing was being cancelled.
    CANCELLING = 4;

    // The batch processing was cancelled.
    CANCELLED = 5;

    // The batch processing has failed.
    FAILED = 6;
  }

  // The state of the current batch processing.
  State state = 1;

  // A message providing more details about the current state of processing.
  // For example, the error message if the operation is failed.
  string state_message = 2;

  // The creation time of the operation.
  google.protobuf.Timestamp create_time = 3;

  // The last update time of the operation.
  google.protobuf.Timestamp update_time = 4;

  // The list of response details of each document.
  repeated IndividualProcessStatus individual_process_statuses = 5;
}

// Request message for the
// [FetchProcessorTypes][google.cloud.documentai.v1.DocumentProcessorService.FetchProcessorTypes]
// method. Some processor types may require the project be added to an
// allowlist.
message FetchProcessorTypesRequest {
  // Required. The location of processor types to list.
  // Format: `projects/{project}/locations/{location}`.
  string parent = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      child_type: "documentai.googleapis.com/ProcessorType"
    }
  ];
}

// Response message for the
// [FetchProcessorTypes][google.cloud.documentai.v1.DocumentProcessorService.FetchProcessorTypes]
// method.
message FetchProcessorTypesResponse {
  // The list of processor types.
  repeated ProcessorType processor_types = 1;
}

// Request message for the
// [ListProcessorTypes][google.cloud.documentai.v1.DocumentProcessorService.ListProcessorTypes]
// method. Some processor types may require the project be added to an
// allowlist.
message ListProcessorTypesRequest {
  // Required. The location of processor types to list.
  // Format: `projects/{project}/locations/{location}`.
  string parent = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      child_type: "documentai.googleapis.com/ProcessorType"
    }
  ];

  // The maximum number of processor types to return.
  // If unspecified, at most `100` processor types will be returned.
  // The maximum value is `500`. Values above `500` will be coerced to `500`.
  int32 page_size = 2;

  // Used to retrieve the next page of results, empty if at the end of the list.
  string page_token = 3;
}

// Response message for the
// [ListProcessorTypes][google.cloud.documentai.v1.DocumentProcessorService.ListProcessorTypes]
// method.
message ListProcessorTypesResponse {
  // The processor types.
  repeated ProcessorType processor_types = 1;

  // Points to the next page, otherwise empty.
  string next_page_token = 2;
}

// Request message for list all processors belongs to a project.
message ListProcessorsRequest {
  // Required. The parent (project and location) which owns this collection of
  // Processors. Format: `projects/{project}/locations/{location}`
  string parent = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      child_type: "documentai.googleapis.com/Processor"
    }
  ];

  // The maximum number of processors to return.
  // If unspecified, at most `50` processors will be returned.
  // The maximum value is `100`. Values above `100` will be coerced to `100`.
  int32 page_size = 2;

  // We will return the processors sorted by creation time. The page token
  // will point to the next processor.
  string page_token = 3;
}

// Response message for the
// [ListProcessors][google.cloud.documentai.v1.DocumentProcessorService.ListProcessors]
// method.
message ListProcessorsResponse {
  // The list of processors.
  repeated Processor processors = 1;

  // Points to the next processor, otherwise empty.
  string next_page_token = 2;
}

// Request message for the
// [GetProcessorType][google.cloud.documentai.v1.DocumentProcessorService.GetProcessorType]
// method.
message GetProcessorTypeRequest {
  // Required. The processor type resource name.
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "documentai.googleapis.com/ProcessorType"
    }
  ];
}

// Request message for the
// [GetProcessor][google.cloud.documentai.v1.DocumentProcessorService.GetProcessor]
// method.
message GetProcessorRequest {
  // Required. The processor resource name.
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "documentai.googleapis.com/Processor"
    }
  ];
}

// Request message for the
// [GetProcessorVersion][google.cloud.documentai.v1.DocumentProcessorService.GetProcessorVersion]
// method.
message GetProcessorVersionRequest {
  // Required. The processor resource name.
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "documentai.googleapis.com/ProcessorVersion"
    }
  ];
}

// Request message for list all processor versions belongs to a processor.
message ListProcessorVersionsRequest {
  // Required. The parent (project, location and processor) to list all
  // versions. Format:
  // `projects/{project}/locations/{location}/processors/{processor}`
  string parent = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      child_type: "documentai.googleapis.com/ProcessorVersion"
    }
  ];

  // The maximum number of processor versions to return.
  // If unspecified, at most `10` processor versions will be returned.
  // The maximum value is `20`. Values above `20` will be coerced to `20`.
  int32 page_size = 2;

  // We will return the processor versions sorted by creation time. The page
  // token will point to the next processor version.
  string page_token = 3;
}

// Response message for the
// [ListProcessorVersions][google.cloud.documentai.v1.DocumentProcessorService.ListProcessorVersions]
// method.
message ListProcessorVersionsResponse {
  // The list of processors.
  repeated ProcessorVersion processor_versions = 1;

  // Points to the next processor, otherwise empty.
  string next_page_token = 2;
}

// Request message for the
// [DeleteProcessorVersion][google.cloud.documentai.v1.DocumentProcessorService.DeleteProcessorVersion]
// method.
message DeleteProcessorVersionRequest {
  // Required. The processor version resource name to be deleted.
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "documentai.googleapis.com/ProcessorVersion"
    }
  ];
}

// The long-running operation metadata for the
// [DeleteProcessorVersion][google.cloud.documentai.v1.DocumentProcessorService.DeleteProcessorVersion]
// method.
message DeleteProcessorVersionMetadata {
  // The basic metadata of the long-running operation.
  CommonOperationMetadata common_metadata = 1;
}

// Request message for the
// [DeployProcessorVersion][google.cloud.documentai.v1.DocumentProcessorService.DeployProcessorVersion]
// method.
message DeployProcessorVersionRequest {
  // Required. The processor version resource name to be deployed.
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "documentai.googleapis.com/ProcessorVersion"
    }
  ];
}

// Response message for the
// [DeployProcessorVersion][google.cloud.documentai.v1.DocumentProcessorService.DeployProcessorVersion]
// method.
message DeployProcessorVersionResponse {}

// The long-running operation metadata for the
// [DeployProcessorVersion][google.cloud.documentai.v1.DocumentProcessorService.DeployProcessorVersion]
// method.
message DeployProcessorVersionMetadata {
  // The basic metadata of the long-running operation.
  CommonOperationMetadata common_metadata = 1;
}

// Request message for the
// [UndeployProcessorVersion][google.cloud.documentai.v1.DocumentProcessorService.UndeployProcessorVersion]
// method.
message UndeployProcessorVersionRequest {
  // Required. The processor version resource name to be undeployed.
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "documentai.googleapis.com/ProcessorVersion"
    }
  ];
}

// Response message for the
// [UndeployProcessorVersion][google.cloud.documentai.v1.DocumentProcessorService.UndeployProcessorVersion]
// method.
message UndeployProcessorVersionResponse {}

// The long-running operation metadata for the
// [UndeployProcessorVersion][google.cloud.documentai.v1.DocumentProcessorService.UndeployProcessorVersion]
// method.
message UndeployProcessorVersionMetadata {
  // The basic metadata of the long-running operation.
  CommonOperationMetadata common_metadata = 1;
}

// Request message for the
// [CreateProcessor][google.cloud.documentai.v1.DocumentProcessorService.CreateProcessor]
// method. Notice this request is sent to a regionalized backend service. If the
// [ProcessorType][google.cloud.documentai.v1.ProcessorType] isn't available in
// that region, the creation fails.
message CreateProcessorRequest {
  // Required. The parent (project and location) under which to create the
  // processor. Format: `projects/{project}/locations/{location}`
  string parent = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      child_type: "documentai.googleapis.com/Processor"
    }
  ];

  // Required. The processor to be created, requires
  // [Processor.type][google.cloud.documentai.v1.Processor.type] and
  // [Processor.display_name][google.cloud.documentai.v1.Processor.display_name]
  // to be set. Also, the
  // [Processor.kms_key_name][google.cloud.documentai.v1.Processor.kms_key_name]
  // field must be set if the processor is under CMEK.
  Processor processor = 2 [(google.api.field_behavior) = REQUIRED];
}

// Request message for the
// [DeleteProcessor][google.cloud.documentai.v1.DocumentProcessorService.DeleteProcessor]
// method.
message DeleteProcessorRequest {
  // Required. The processor resource name to be deleted.
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "documentai.googleapis.com/Processor"
    }
  ];
}

// The long-running operation metadata for the
// [DeleteProcessor][google.cloud.documentai.v1.DocumentProcessorService.DeleteProcessor]
// method.
message DeleteProcessorMetadata {
  // The basic metadata of the long-running operation.
  CommonOperationMetadata common_metadata = 5;
}

// Request message for the
// [EnableProcessor][google.cloud.documentai.v1.DocumentProcessorService.EnableProcessor]
// method.
message EnableProcessorRequest {
  // Required. The processor resource name to be enabled.
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "documentai.googleapis.com/Processor"
    }
  ];
}

// Response message for the
// [EnableProcessor][google.cloud.documentai.v1.DocumentProcessorService.EnableProcessor]
// method. Intentionally empty proto for adding fields in future.
message EnableProcessorResponse {}

// The long-running operation metadata for the
// [EnableProcessor][google.cloud.documentai.v1.DocumentProcessorService.EnableProcessor]
// method.
message EnableProcessorMetadata {
  // The basic metadata of the long-running operation.
  CommonOperationMetadata common_metadata = 5;
}

// Request message for the
// [DisableProcessor][google.cloud.documentai.v1.DocumentProcessorService.DisableProcessor]
// method.
message DisableProcessorRequest {
  // Required. The processor resource name to be disabled.
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "documentai.googleapis.com/Processor"
    }
  ];
}

// Response message for the
// [DisableProcessor][google.cloud.documentai.v1.DocumentProcessorService.DisableProcessor]
// method. Intentionally empty proto for adding fields in future.
message DisableProcessorResponse {}

// The long-running operation metadata for the
// [DisableProcessor][google.cloud.documentai.v1.DocumentProcessorService.DisableProcessor]
// method.
message DisableProcessorMetadata {
  // The basic metadata of the long-running operation.
  CommonOperationMetadata common_metadata = 5;
}

// Request message for the
// [SetDefaultProcessorVersion][google.cloud.documentai.v1.DocumentProcessorService.SetDefaultProcessorVersion]
// method.
message SetDefaultProcessorVersionRequest {
  // Required. The resource name of the
  // [Processor][google.cloud.documentai.v1.Processor] to change default
  // version.
  string processor = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "documentai.googleapis.com/Processor"
    }
  ];

  // Required. The resource name of child
  // [ProcessorVersion][google.cloud.documentai.v1.ProcessorVersion] to use as
  // default. Format:
  // `projects/{project}/locations/{location}/processors/{processor}/processorVersions/{version}`
  string default_processor_version = 2 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "documentai.googleapis.com/ProcessorVersion"
    }
  ];
}

// Response message for the
// [SetDefaultProcessorVersion][google.cloud.documentai.v1.DocumentProcessorService.SetDefaultProcessorVersion]
// method.
message SetDefaultProcessorVersionResponse {}

// The long-running operation metadata for the
// [SetDefaultProcessorVersion][google.cloud.documentai.v1.DocumentProcessorService.SetDefaultProcessorVersion]
// method.
message SetDefaultProcessorVersionMetadata {
  // The basic metadata of the long-running operation.
  CommonOperationMetadata common_metadata = 1;
}

// Request message for the
// [TrainProcessorVersion][google.cloud.documentai.v1.DocumentProcessorService.TrainProcessorVersion]
// method.
message TrainProcessorVersionRequest {
  // The input data used to train a new
  // [ProcessorVersion][google.cloud.documentai.v1.ProcessorVersion].
  message InputData {
    // The documents used for training the new version.
    BatchDocumentsInputConfig training_documents = 3;

    // The documents used for testing the trained version.
    BatchDocumentsInputConfig test_documents = 4;
  }

  // Options to control the training of the Custom Document Extraction (CDE)
  // Processor.
  message CustomDocumentExtractionOptions {
    // Training Method for CDE. `TRAINING_METHOD_UNSPECIFIED` will fall back to
    // `MODEL_BASED`.
    enum TrainingMethod {
      TRAINING_METHOD_UNSPECIFIED = 0;

      MODEL_BASED = 1;

      TEMPLATE_BASED = 2;
    }

    // Training method to use for CDE training.
    TrainingMethod training_method = 3;
  }

  // Options to control foundation model tuning of the processor.
  message FoundationModelTuningOptions {
    // Optional. The number of steps to run for model tuning. Valid values are
    // between 1 and 400. If not provided, recommended steps will be used.
    int32 train_steps = 2 [(google.api.field_behavior) = OPTIONAL];

    // Optional. The multiplier to apply to the recommended learning rate. Valid
    // values are between 0.1 and 10. If not provided, recommended learning rate
    // will be used.
    float learning_rate_multiplier = 3 [(google.api.field_behavior) = OPTIONAL];
  }

  oneof processor_flags {
    // Options to control Custom Document Extraction (CDE) Processor.
    CustomDocumentExtractionOptions custom_document_extraction_options = 5;

    // Options to control foundation model tuning of a processor.
    FoundationModelTuningOptions foundation_model_tuning_options = 12;
  }

  // Required. The parent (project, location and processor) to create the new
  // version for. Format:
  // `projects/{project}/locations/{location}/processors/{processor}`.
  string parent = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "documentai.googleapis.com/Processor"
    }
  ];

  // Required. The processor version to be created.
  ProcessorVersion processor_version = 2
      [(google.api.field_behavior) = REQUIRED];

  // Optional. The schema the processor version will be trained with.
  DocumentSchema document_schema = 10 [(google.api.field_behavior) = OPTIONAL];

  // Optional. The input data used to train the
  // [ProcessorVersion][google.cloud.documentai.v1.ProcessorVersion].
  InputData input_data = 4 [(google.api.field_behavior) = OPTIONAL];

  // Optional. The processor version to use as a base for training. This
  // processor version must be a child of `parent`. Format:
  // `projects/{project}/locations/{location}/processors/{processor}/processorVersions/{processorVersion}`.
  string base_processor_version = 8 [(google.api.field_behavior) = OPTIONAL];
}

// The response for
// [TrainProcessorVersion][google.cloud.documentai.v1.DocumentProcessorService.TrainProcessorVersion].
message TrainProcessorVersionResponse {
  // The resource name of the processor version produced by training.
  string processor_version = 1;
}

// The metadata that represents a processor version being created.
message TrainProcessorVersionMetadata {
  // The dataset validation information.
  // This includes any and all errors with documents and the dataset.
  message DatasetValidation {
    // The total number of document errors.
    int32 document_error_count = 3;

    // The total number of dataset errors.
    int32 dataset_error_count = 4;

    // Error information pertaining to specific documents. A maximum of 10
    // document errors will be returned.
    // Any document with errors will not be used throughout training.
    repeated google.rpc.Status document_errors = 1;

    // Error information for the dataset as a whole. A maximum of 10 dataset
    // errors will be returned.
    // A single dataset error is terminal for training.
    repeated google.rpc.Status dataset_errors = 2;
  }

  // The basic metadata of the long-running operation.
  CommonOperationMetadata common_metadata = 1;

  // The training dataset validation information.
  DatasetValidation training_dataset_validation = 2;

  // The test dataset validation information.
  DatasetValidation test_dataset_validation = 3;
}

// Request message for the
// [ReviewDocument][google.cloud.documentai.v1.DocumentProcessorService.ReviewDocument]
// method.
message ReviewDocumentRequest {
  // The priority level of the human review task.
  enum Priority {
    // The default priority level.
    DEFAULT = 0;

    // The urgent priority level. The labeling manager should allocate labeler
    // resource to the urgent task queue to respect this priority level.
    URGENT = 1;
  }

  // The document payload.
  oneof source {
    // An inline document proto.
    Document inline_document = 4;
  }

  // Required. The resource name of the
  // [HumanReviewConfig][google.cloud.documentai.v1.HumanReviewConfig] that the
  // document will be reviewed with.
  string human_review_config = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "documentai.googleapis.com/HumanReviewConfig"
    }
  ];

  // Whether the validation should be performed on the ad-hoc review request.
  bool enable_schema_validation = 3;

  // The priority of the human review task.
  Priority priority = 5;

  // The document schema of the human review task.
  DocumentSchema document_schema = 6;
}

// Response message for the
// [ReviewDocument][google.cloud.documentai.v1.DocumentProcessorService.ReviewDocument]
// method.
message ReviewDocumentResponse {
  // Possible states of the review operation.
  enum State {
    // The default value. This value is used if the state is omitted.
    STATE_UNSPECIFIED = 0;

    // The review operation is rejected by the reviewer.
    REJECTED = 1;

    // The review operation is succeeded.
    SUCCEEDED = 2;
  }

  // The Cloud Storage uri for the human reviewed document if the review is
  // succeeded.
  string gcs_destination = 1;

  // The state of the review operation.
  State state = 2;

  // The reason why the review is rejected by reviewer.
  string rejection_reason = 3;
}

// The long-running operation metadata for the
// [ReviewDocument][google.cloud.documentai.v1.DocumentProcessorService.ReviewDocument]
// method.
message ReviewDocumentOperationMetadata {
  // The basic metadata of the long-running operation.
  CommonOperationMetadata common_metadata = 5;

  // The Crowd Compute question ID.
  string question_id = 6;
}

// Evaluates the given
// [ProcessorVersion][google.cloud.documentai.v1.ProcessorVersion] against the
// supplied documents.
message EvaluateProcessorVersionRequest {
  // Required. The resource name of the
  // [ProcessorVersion][google.cloud.documentai.v1.ProcessorVersion] to
  // evaluate.
  // `projects/{project}/locations/{location}/processors/{processor}/processorVersions/{processorVersion}`
  string processor_version = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "documentai.googleapis.com/ProcessorVersion"
    }
  ];

  // Optional. The documents used in the evaluation. If unspecified, use the
  // processor's dataset as evaluation input.
  BatchDocumentsInputConfig evaluation_documents = 3
      [(google.api.field_behavior) = OPTIONAL];
}

// Metadata of the
// [EvaluateProcessorVersion][google.cloud.documentai.v1.DocumentProcessorService.EvaluateProcessorVersion]
// method.
message EvaluateProcessorVersionMetadata {
  // The basic metadata of the long-running operation.
  CommonOperationMetadata common_metadata = 1;
}

// Response of the
// [EvaluateProcessorVersion][google.cloud.documentai.v1.DocumentProcessorService.EvaluateProcessorVersion]
// method.
message EvaluateProcessorVersionResponse {
  // The resource name of the created evaluation.
  string evaluation = 2;
}

// Retrieves a specific Evaluation.
message GetEvaluationRequest {
  // Required. The resource name of the
  // [Evaluation][google.cloud.documentai.v1.Evaluation] to get.
  // `projects/{project}/locations/{location}/processors/{processor}/processorVersions/{processorVersion}/evaluations/{evaluation}`
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "documentai.googleapis.com/Evaluation"
    }
  ];
}

// Retrieves a list of evaluations for a given
// [ProcessorVersion][google.cloud.documentai.v1.ProcessorVersion].
message ListEvaluationsRequest {
  // Required. The resource name of the
  // [ProcessorVersion][google.cloud.documentai.v1.ProcessorVersion] to list
  // evaluations for.
  // `projects/{project}/locations/{location}/processors/{processor}/processorVersions/{processorVersion}`
  string parent = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "documentai.googleapis.com/ProcessorVersion"
    }
  ];

  // The standard list page size.
  // If unspecified, at most `5` evaluations are returned.
  // The maximum value is `100`. Values above `100` are coerced to `100`.
  int32 page_size = 2;

  // A page token, received from a previous `ListEvaluations` call.
  // Provide this to retrieve the subsequent page.
  string page_token = 3;
}

// The response from `ListEvaluations`.
message ListEvaluationsResponse {
  // The evaluations requested.
  repeated Evaluation evaluations = 1;

  // A token, which can be sent as `page_token` to retrieve the next page.
  // If this field is omitted, there are no subsequent pages.
  string next_page_token = 2;
}