/*
 * SPDX-License-Identifier: Apache-2.0
 *
 * The OpenSearch Contributors require contributions made to
 * this file be licensed under the Apache-2.0 license or a
 * compatible open source license.
 */

/*
 * Licensed to Elasticsearch under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch licenses this file to you 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.
 */

/*
 * Modifications Copyright OpenSearch Contributors. See
 * GitHub history for details.
 */

package org.opensearch.client;

import org.opensearch.action.ingest.DeletePipelineRequest;
import org.opensearch.action.ingest.GetPipelineRequest;
import org.opensearch.action.ingest.GetPipelineResponse;
import org.opensearch.action.ingest.PutPipelineRequest;
import org.opensearch.action.ingest.SimulatePipelineRequest;
import org.opensearch.action.ingest.SimulatePipelineResponse;
import org.opensearch.action.support.master.AcknowledgedResponse;
import org.opensearch.core.action.ActionListener;

import java.io.IOException;
import java.util.Collections;

import static java.util.Collections.emptySet;

/**
 * A wrapper for the {@link RestHighLevelClient} that provides methods for accessing the Ingest API.
 *
 */
public final class IngestClient {

    private final RestHighLevelClient restHighLevelClient;

    IngestClient(RestHighLevelClient restHighLevelClient) {
        this.restHighLevelClient = restHighLevelClient;
    }

    /**
     * Add a pipeline or update an existing pipeline.
     *
     * @param request the request
     * @param options the request options (e.g. headers), use {@link RequestOptions#DEFAULT} if nothing needs to be customized
     * @return the response
     * @throws IOException in case there is a problem sending the request or parsing back the response
     */
    public AcknowledgedResponse putPipeline(PutPipelineRequest request, RequestOptions options) throws IOException {
        return restHighLevelClient.performRequestAndParseEntity(
            request,
            IngestRequestConverters::putPipeline,
            options,
            AcknowledgedResponse::fromXContent,
            emptySet()
        );
    }

    /**
     * Asynchronously add a pipeline or update an existing pipeline.
     *
     * @param request the request
     * @param options the request options (e.g. headers), use {@link RequestOptions#DEFAULT} if nothing needs to be customized
     * @param listener the listener to be notified upon request completion
     * @return cancellable that may be used to cancel the request
     */
    public Cancellable putPipelineAsync(PutPipelineRequest request, RequestOptions options, ActionListener<AcknowledgedResponse> listener) {
        return restHighLevelClient.performRequestAsyncAndParseEntity(
            request,
            IngestRequestConverters::putPipeline,
            options,
            AcknowledgedResponse::fromXContent,
            listener,
            emptySet()
        );
    }

    /**
     * Get an existing pipeline.
     *
     * @param request the request
     * @param options the request options (e.g. headers), use {@link RequestOptions#DEFAULT} if nothing needs to be customized
     * @return the response
     * @throws IOException in case there is a problem sending the request or parsing back the response
     */
    public GetPipelineResponse getPipeline(GetPipelineRequest request, RequestOptions options) throws IOException {
        return restHighLevelClient.performRequestAndParseEntity(
            request,
            IngestRequestConverters::getPipeline,
            options,
            GetPipelineResponse::fromXContent,
            Collections.singleton(404)
        );
    }

    /**
     * Asynchronously get an existing pipeline.
     *
     * @param request the request
     * @param options the request options (e.g. headers), use {@link RequestOptions#DEFAULT} if nothing needs to be customized
     * @param listener the listener to be notified upon request completion
     * @return cancellable that may be used to cancel the request
     */
    public Cancellable getPipelineAsync(GetPipelineRequest request, RequestOptions options, ActionListener<GetPipelineResponse> listener) {
        return restHighLevelClient.performRequestAsyncAndParseEntity(
            request,
            IngestRequestConverters::getPipeline,
            options,
            GetPipelineResponse::fromXContent,
            listener,
            Collections.singleton(404)
        );
    }

    /**
     * Delete an existing pipeline.
     *
     * @param request the request
     * @param options the request options (e.g. headers), use {@link RequestOptions#DEFAULT} if nothing needs to be customized
     * @return the response
     * @throws IOException in case there is a problem sending the request or parsing back the response
     */
    public AcknowledgedResponse deletePipeline(DeletePipelineRequest request, RequestOptions options) throws IOException {
        return restHighLevelClient.performRequestAndParseEntity(
            request,
            IngestRequestConverters::deletePipeline,
            options,
            AcknowledgedResponse::fromXContent,
            emptySet()
        );
    }

    /**
     * Asynchronously delete an existing pipeline.
     *
     * @param request the request
     * @param options the request options (e.g. headers), use {@link RequestOptions#DEFAULT} if nothing needs to be customized
     * @param listener the listener to be notified upon request completion
     * @return cancellable that may be used to cancel the request
     */
    public Cancellable deletePipelineAsync(
        DeletePipelineRequest request,
        RequestOptions options,
        ActionListener<AcknowledgedResponse> listener
    ) {
        return restHighLevelClient.performRequestAsyncAndParseEntity(
            request,
            IngestRequestConverters::deletePipeline,
            options,
            AcknowledgedResponse::fromXContent,
            listener,
            emptySet()
        );
    }

    /**
     * Simulate a pipeline on a set of documents provided in the request
     *
     * @param request the request
     * @param options the request options (e.g. headers), use {@link RequestOptions#DEFAULT} if nothing needs to be customized
     * @return the response
     * @throws IOException in case there is a problem sending the request or parsing back the response
     */
    public SimulatePipelineResponse simulate(SimulatePipelineRequest request, RequestOptions options) throws IOException {
        return restHighLevelClient.performRequestAndParseEntity(
            request,
            IngestRequestConverters::simulatePipeline,
            options,
            SimulatePipelineResponse::fromXContent,
            emptySet()
        );
    }

    /**
     * Asynchronously simulate a pipeline on a set of documents provided in the request
     *
     * @param request the request
     * @param options the request options (e.g. headers), use {@link RequestOptions#DEFAULT} if nothing needs to be customized
     * @param listener the listener to be notified upon request completion
     * @return cancellable that may be used to cancel the request
     */
    public Cancellable simulateAsync(
        SimulatePipelineRequest request,
        RequestOptions options,
        ActionListener<SimulatePipelineResponse> listener
    ) {
        return restHighLevelClient.performRequestAsyncAndParseEntity(
            request,
            IngestRequestConverters::simulatePipeline,
            options,
            SimulatePipelineResponse::fromXContent,
            listener,
            emptySet()
        );
    }
}
