<?php
/*
 * Copyright 2025 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://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.
 */

/*
 * GENERATED CODE WARNING
 * Generated by gapic-generator-php from the file
 * https://github.com/googleapis/googleapis/blob/master/google/cloud/discoveryengine/v1/assistant_service.proto
 * Updates to the above are reflected here through a refresh process.
 */

namespace Google\Cloud\DiscoveryEngine\V1\Client;

use Google\ApiCore\ApiException;
use Google\ApiCore\CredentialsWrapper;
use Google\ApiCore\GapicClientTrait;
use Google\ApiCore\Options\ClientOptions;
use Google\ApiCore\ResourceHelperTrait;
use Google\ApiCore\ServerStream;
use Google\ApiCore\Transport\TransportInterface;
use Google\ApiCore\ValidationException;
use Google\Auth\FetchAuthTokenInterface;
use Google\Cloud\DiscoveryEngine\V1\StreamAssistRequest;
use Google\Cloud\DiscoveryEngine\V1\StreamAssistResponse;
use Psr\Log\LoggerInterface;

/**
 * Service Description: Service for managing Assistant configuration and assisting users.
 *
 * This class provides the ability to make remote calls to the backing service through method
 * calls that map to API methods.
 *
 * Many parameters require resource names to be formatted in a particular way. To
 * assist with these names, this class includes a format method for each type of
 * name, and additionally a parseName method to extract the individual identifiers
 * contained within formatted names that are returned by the API.
 */
final class AssistantServiceClient
{
    use GapicClientTrait;
    use ResourceHelperTrait;

    /** The name of the service. */
    private const SERVICE_NAME = 'google.cloud.discoveryengine.v1.AssistantService';

    /**
     * The default address of the service.
     *
     * @deprecated SERVICE_ADDRESS_TEMPLATE should be used instead.
     */
    private const SERVICE_ADDRESS = 'discoveryengine.googleapis.com';

    /** The address template of the service. */
    private const SERVICE_ADDRESS_TEMPLATE = 'discoveryengine.UNIVERSE_DOMAIN';

    /** The default port of the service. */
    private const DEFAULT_SERVICE_PORT = 443;

    /** The name of the code generator, to be included in the agent header. */
    private const CODEGEN_NAME = 'gapic';

    /** The default scopes required by the service. */
    public static $serviceScopes = ['https://www.googleapis.com/auth/cloud-platform'];

    private static function getClientDefaults()
    {
        return [
            'serviceName' => self::SERVICE_NAME,
            'apiEndpoint' => self::SERVICE_ADDRESS . ':' . self::DEFAULT_SERVICE_PORT,
            'clientConfig' => __DIR__ . '/../resources/assistant_service_client_config.json',
            'descriptorsConfigPath' => __DIR__ . '/../resources/assistant_service_descriptor_config.php',
            'gcpApiConfigPath' => __DIR__ . '/../resources/assistant_service_grpc_config.json',
            'credentialsConfig' => [
                'defaultScopes' => self::$serviceScopes,
            ],
            'transportConfig' => [
                'rest' => [
                    'restClientConfigPath' => __DIR__ . '/../resources/assistant_service_rest_client_config.php',
                ],
            ],
        ];
    }

    /**
     * Formats a string containing the fully-qualified path to represent a assistant
     * resource.
     *
     * @param string $project
     * @param string $location
     * @param string $collection
     * @param string $engine
     * @param string $assistant
     *
     * @return string The formatted assistant resource.
     */
    public static function assistantName(
        string $project,
        string $location,
        string $collection,
        string $engine,
        string $assistant
    ): string {
        return self::getPathTemplate('assistant')->render([
            'project' => $project,
            'location' => $location,
            'collection' => $collection,
            'engine' => $engine,
            'assistant' => $assistant,
        ]);
    }

    /**
     * Formats a string containing the fully-qualified path to represent a data_store
     * resource.
     *
     * @param string $project
     * @param string $location
     * @param string $dataStore
     *
     * @return string The formatted data_store resource.
     */
    public static function dataStoreName(string $project, string $location, string $dataStore): string
    {
        return self::getPathTemplate('dataStore')->render([
            'project' => $project,
            'location' => $location,
            'data_store' => $dataStore,
        ]);
    }

    /**
     * Formats a string containing the fully-qualified path to represent a
     * project_location_collection_data_store resource.
     *
     * @param string $project
     * @param string $location
     * @param string $collection
     * @param string $dataStore
     *
     * @return string The formatted project_location_collection_data_store resource.
     */
    public static function projectLocationCollectionDataStoreName(
        string $project,
        string $location,
        string $collection,
        string $dataStore
    ): string {
        return self::getPathTemplate('projectLocationCollectionDataStore')->render([
            'project' => $project,
            'location' => $location,
            'collection' => $collection,
            'data_store' => $dataStore,
        ]);
    }

    /**
     * Formats a string containing the fully-qualified path to represent a
     * project_location_collection_data_store_session resource.
     *
     * @param string $project
     * @param string $location
     * @param string $collection
     * @param string $dataStore
     * @param string $session
     *
     * @return string The formatted project_location_collection_data_store_session resource.
     */
    public static function projectLocationCollectionDataStoreSessionName(
        string $project,
        string $location,
        string $collection,
        string $dataStore,
        string $session
    ): string {
        return self::getPathTemplate('projectLocationCollectionDataStoreSession')->render([
            'project' => $project,
            'location' => $location,
            'collection' => $collection,
            'data_store' => $dataStore,
            'session' => $session,
        ]);
    }

    /**
     * Formats a string containing the fully-qualified path to represent a
     * project_location_collection_engine_session resource.
     *
     * @param string $project
     * @param string $location
     * @param string $collection
     * @param string $engine
     * @param string $session
     *
     * @return string The formatted project_location_collection_engine_session resource.
     */
    public static function projectLocationCollectionEngineSessionName(
        string $project,
        string $location,
        string $collection,
        string $engine,
        string $session
    ): string {
        return self::getPathTemplate('projectLocationCollectionEngineSession')->render([
            'project' => $project,
            'location' => $location,
            'collection' => $collection,
            'engine' => $engine,
            'session' => $session,
        ]);
    }

    /**
     * Formats a string containing the fully-qualified path to represent a
     * project_location_data_store resource.
     *
     * @param string $project
     * @param string $location
     * @param string $dataStore
     *
     * @return string The formatted project_location_data_store resource.
     */
    public static function projectLocationDataStoreName(string $project, string $location, string $dataStore): string
    {
        return self::getPathTemplate('projectLocationDataStore')->render([
            'project' => $project,
            'location' => $location,
            'data_store' => $dataStore,
        ]);
    }

    /**
     * Formats a string containing the fully-qualified path to represent a
     * project_location_data_store_session resource.
     *
     * @param string $project
     * @param string $location
     * @param string $dataStore
     * @param string $session
     *
     * @return string The formatted project_location_data_store_session resource.
     */
    public static function projectLocationDataStoreSessionName(
        string $project,
        string $location,
        string $dataStore,
        string $session
    ): string {
        return self::getPathTemplate('projectLocationDataStoreSession')->render([
            'project' => $project,
            'location' => $location,
            'data_store' => $dataStore,
            'session' => $session,
        ]);
    }

    /**
     * Formats a string containing the fully-qualified path to represent a session
     * resource.
     *
     * @param string $project
     * @param string $location
     * @param string $dataStore
     * @param string $session
     *
     * @return string The formatted session resource.
     */
    public static function sessionName(string $project, string $location, string $dataStore, string $session): string
    {
        return self::getPathTemplate('session')->render([
            'project' => $project,
            'location' => $location,
            'data_store' => $dataStore,
            'session' => $session,
        ]);
    }

    /**
     * Parses a formatted name string and returns an associative array of the components in the name.
     * The following name formats are supported:
     * Template: Pattern
     * - assistant: projects/{project}/locations/{location}/collections/{collection}/engines/{engine}/assistants/{assistant}
     * - dataStore: projects/{project}/locations/{location}/dataStores/{data_store}
     * - projectLocationCollectionDataStore: projects/{project}/locations/{location}/collections/{collection}/dataStores/{data_store}
     * - projectLocationCollectionDataStoreSession: projects/{project}/locations/{location}/collections/{collection}/dataStores/{data_store}/sessions/{session}
     * - projectLocationCollectionEngineSession: projects/{project}/locations/{location}/collections/{collection}/engines/{engine}/sessions/{session}
     * - projectLocationDataStore: projects/{project}/locations/{location}/dataStores/{data_store}
     * - projectLocationDataStoreSession: projects/{project}/locations/{location}/dataStores/{data_store}/sessions/{session}
     * - session: projects/{project}/locations/{location}/dataStores/{data_store}/sessions/{session}
     *
     * The optional $template argument can be supplied to specify a particular pattern,
     * and must match one of the templates listed above. If no $template argument is
     * provided, or if the $template argument does not match one of the templates
     * listed, then parseName will check each of the supported templates, and return
     * the first match.
     *
     * @param string  $formattedName The formatted name string
     * @param ?string $template      Optional name of template to match
     *
     * @return array An associative array from name component IDs to component values.
     *
     * @throws ValidationException If $formattedName could not be matched.
     */
    public static function parseName(string $formattedName, ?string $template = null): array
    {
        return self::parseFormattedName($formattedName, $template);
    }

    /**
     * Constructor.
     *
     * @param array|ClientOptions $options {
     *     Optional. Options for configuring the service API wrapper.
     *
     *     @type string $apiEndpoint
     *           The address of the API remote host. May optionally include the port, formatted
     *           as "<uri>:<port>". Default 'discoveryengine.googleapis.com:443'.
     *     @type FetchAuthTokenInterface|CredentialsWrapper $credentials
     *           This option should only be used with a pre-constructed
     *           {@see FetchAuthTokenInterface} or {@see CredentialsWrapper} object. Note that
     *           when one of these objects are provided, any settings in $credentialsConfig will
     *           be ignored.
     *           **Important**: If you are providing a path to a credentials file, or a decoded
     *           credentials file as a PHP array, this usage is now DEPRECATED. Providing an
     *           unvalidated credential configuration to Google APIs can compromise the security
     *           of your systems and data. It is recommended to create the credentials explicitly
     *           ```
     *           use Google\Auth\Credentials\ServiceAccountCredentials;
     *           use Google\Cloud\DiscoveryEngine\V1\AssistantServiceClient;
     *           $creds = new ServiceAccountCredentials($scopes, $json);
     *           $options = new AssistantServiceClient(['credentials' => $creds]);
     *           ```
     *           {@see
     *           https://cloud.google.com/docs/authentication/external/externally-sourced-credentials}
     *     @type array $credentialsConfig
     *           Options used to configure credentials, including auth token caching, for the
     *           client. For a full list of supporting configuration options, see
     *           {@see \Google\ApiCore\CredentialsWrapper::build()} .
     *     @type bool $disableRetries
     *           Determines whether or not retries defined by the client configuration should be
     *           disabled. Defaults to `false`.
     *     @type string|array $clientConfig
     *           Client method configuration, including retry settings. This option can be either
     *           a path to a JSON file, or a PHP array containing the decoded JSON data. By
     *           default this settings points to the default client config file, which is
     *           provided in the resources folder.
     *     @type string|TransportInterface $transport
     *           The transport used for executing network requests. May be either the string
     *           `rest` or `grpc`. Defaults to `grpc` if gRPC support is detected on the system.
     *           *Advanced usage*: Additionally, it is possible to pass in an already
     *           instantiated {@see \Google\ApiCore\Transport\TransportInterface} object. Note
     *           that when this object is provided, any settings in $transportConfig, and any
     *           $apiEndpoint setting, will be ignored.
     *     @type array $transportConfig
     *           Configuration options that will be used to construct the transport. Options for
     *           each supported transport type should be passed in a key for that transport. For
     *           example:
     *           $transportConfig = [
     *               'grpc' => [...],
     *               'rest' => [...],
     *           ];
     *           See the {@see \Google\ApiCore\Transport\GrpcTransport::build()} and
     *           {@see \Google\ApiCore\Transport\RestTransport::build()} methods for the
     *           supported options.
     *     @type callable $clientCertSource
     *           A callable which returns the client cert as a string. This can be used to
     *           provide a certificate and private key to the transport layer for mTLS.
     *     @type false|LoggerInterface $logger
     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
     *     @type string $universeDomain
     *           The service domain for the client. Defaults to 'googleapis.com'.
     * }
     *
     * @throws ValidationException
     */
    public function __construct(array|ClientOptions $options = [])
    {
        $clientOptions = $this->buildClientOptions($options);
        $this->setClientOptions($clientOptions);
    }

    /**
     * Assists the user with a query in a streaming fashion.
     *
     * @example samples/V1/AssistantServiceClient/stream_assist.php
     *
     * @param StreamAssistRequest $request     A request to house fields associated with the call.
     * @param array               $callOptions {
     *     Optional.
     *
     *     @type int $timeoutMillis
     *           Timeout to use for this call.
     * }
     *
     * @return ServerStream<StreamAssistResponse>
     *
     * @throws ApiException Thrown if the API call fails.
     */
    public function streamAssist(StreamAssistRequest $request, array $callOptions = []): ServerStream
    {
        return $this->startApiCall('StreamAssist', $request, $callOptions);
    }
}
