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/*
 * 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.
 */

package org.elasticsearch.client;

import org.apache.http.client.methods.HttpDelete;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpPut;
import org.elasticsearch.action.admin.cluster.repositories.cleanup.CleanupRepositoryRequest;
import org.elasticsearch.action.admin.cluster.repositories.delete.DeleteRepositoryRequest;
import org.elasticsearch.action.admin.cluster.repositories.get.GetRepositoriesRequest;
import org.elasticsearch.action.admin.cluster.repositories.put.PutRepositoryRequest;
import org.elasticsearch.action.admin.cluster.repositories.verify.VerifyRepositoryRequest;
import org.elasticsearch.action.admin.cluster.snapshots.create.CreateSnapshotRequest;
import org.elasticsearch.action.admin.cluster.snapshots.delete.DeleteSnapshotRequest;
import org.elasticsearch.action.admin.cluster.snapshots.get.GetSnapshotsRequest;
import org.elasticsearch.action.admin.cluster.snapshots.restore.RestoreSnapshotRequest;
import org.elasticsearch.action.admin.cluster.snapshots.status.SnapshotsStatusRequest;
import org.elasticsearch.common.Strings;

import java.io.IOException;

final class SnapshotRequestConverters {

    private SnapshotRequestConverters() {}

    static Request getRepositories(GetRepositoriesRequest getRepositoriesRequest) {
        String[] repositories = getRepositoriesRequest.repositories() == null ? Strings.EMPTY_ARRAY : getRepositoriesRequest.repositories();
        String endpoint = new RequestConverters.EndpointBuilder().addPathPartAsIs("_snapshot").addCommaSeparatedPathParts(repositories)
            .build();
        Request request = new Request(HttpGet.METHOD_NAME, endpoint);

        RequestConverters.Params parameters = new RequestConverters.Params();
        parameters.withMasterTimeout(getRepositoriesRequest.masterNodeTimeout());
        parameters.withLocal(getRepositoriesRequest.local());
        request.addParameters(parameters.asMap());
        return request;
    }

    static Request createRepository(PutRepositoryRequest putRepositoryRequest) throws IOException {
        String endpoint = new RequestConverters.EndpointBuilder().addPathPart("_snapshot").addPathPart(putRepositoryRequest.name()).build();
        Request request = new Request(HttpPut.METHOD_NAME, endpoint);

        RequestConverters.Params parameters = new RequestConverters.Params();
        parameters.withMasterTimeout(putRepositoryRequest.masterNodeTimeout());
        parameters.withTimeout(putRepositoryRequest.timeout());
        if (putRepositoryRequest.verify() == false) {
            parameters.putParam("verify", "false");
        }
        request.addParameters(parameters.asMap());
        request.setEntity(RequestConverters.createEntity(putRepositoryRequest, RequestConverters.REQUEST_BODY_CONTENT_TYPE));
        return request;
    }

    static Request deleteRepository(DeleteRepositoryRequest deleteRepositoryRequest) {
        String endpoint = new RequestConverters.EndpointBuilder().addPathPartAsIs("_snapshot").addPathPart(deleteRepositoryRequest.name())
            .build();
        Request request = new Request(HttpDelete.METHOD_NAME, endpoint);

        RequestConverters.Params parameters = new RequestConverters.Params();
        parameters.withMasterTimeout(deleteRepositoryRequest.masterNodeTimeout());
        parameters.withTimeout(deleteRepositoryRequest.timeout());
        request.addParameters(parameters.asMap());
        return request;
    }

    static Request verifyRepository(VerifyRepositoryRequest verifyRepositoryRequest) {
        String endpoint = new RequestConverters.EndpointBuilder().addPathPartAsIs("_snapshot")
            .addPathPart(verifyRepositoryRequest.name())
            .addPathPartAsIs("_verify")
            .build();
        Request request = new Request(HttpPost.METHOD_NAME, endpoint);

        RequestConverters.Params parameters = new RequestConverters.Params();
        parameters.withMasterTimeout(verifyRepositoryRequest.masterNodeTimeout());
        parameters.withTimeout(verifyRepositoryRequest.timeout());
        request.addParameters(parameters.asMap());
        return request;
    }

    static Request cleanupRepository(CleanupRepositoryRequest cleanupRepositoryRequest) {
        String endpoint = new RequestConverters.EndpointBuilder().addPathPartAsIs("_snapshot")
            .addPathPart(cleanupRepositoryRequest.name())
            .addPathPartAsIs("_cleanup")
            .build();
        Request request = new Request(HttpPost.METHOD_NAME, endpoint);

        RequestConverters.Params parameters = new RequestConverters.Params();
        parameters.withMasterTimeout(cleanupRepositoryRequest.masterNodeTimeout());
        parameters.withTimeout(cleanupRepositoryRequest.timeout());
        request.addParameters(parameters.asMap());
        return request;
    }

    static Request createSnapshot(CreateSnapshotRequest createSnapshotRequest) throws IOException {
        String endpoint = new RequestConverters.EndpointBuilder().addPathPart("_snapshot")
            .addPathPart(createSnapshotRequest.repository())
            .addPathPart(createSnapshotRequest.snapshot())
            .build();
        Request request = new Request(HttpPut.METHOD_NAME, endpoint);
        RequestConverters.Params params = new RequestConverters.Params();
        params.withMasterTimeout(createSnapshotRequest.masterNodeTimeout());
        params.withWaitForCompletion(createSnapshotRequest.waitForCompletion());
        request.addParameters(params.asMap());
        request.setEntity(RequestConverters.createEntity(createSnapshotRequest, RequestConverters.REQUEST_BODY_CONTENT_TYPE));
        return request;
    }

    static Request getSnapshots(GetSnapshotsRequest getSnapshotsRequest) {
        RequestConverters.EndpointBuilder endpointBuilder = new RequestConverters.EndpointBuilder().addPathPartAsIs("_snapshot")
            .addPathPart(getSnapshotsRequest.repository());
        String endpoint;
        if (getSnapshotsRequest.snapshots().length == 0) {
            endpoint = endpointBuilder.addPathPart("_all").build();
        } else {
            endpoint = endpointBuilder.addCommaSeparatedPathParts(getSnapshotsRequest.snapshots()).build();
        }

        Request request = new Request(HttpGet.METHOD_NAME, endpoint);

        RequestConverters.Params parameters = new RequestConverters.Params();
        parameters.withMasterTimeout(getSnapshotsRequest.masterNodeTimeout());
        parameters.putParam("ignore_unavailable", Boolean.toString(getSnapshotsRequest.ignoreUnavailable()));
        parameters.putParam("verbose", Boolean.toString(getSnapshotsRequest.verbose()));
        request.addParameters(parameters.asMap());
        return request;
    }

    static Request snapshotsStatus(SnapshotsStatusRequest snapshotsStatusRequest) {
        String endpoint = new RequestConverters.EndpointBuilder().addPathPartAsIs("_snapshot")
            .addPathPart(snapshotsStatusRequest.repository())
            .addCommaSeparatedPathParts(snapshotsStatusRequest.snapshots())
            .addPathPartAsIs("_status")
            .build();
        Request request = new Request(HttpGet.METHOD_NAME, endpoint);

        RequestConverters.Params parameters = new RequestConverters.Params();
        parameters.withMasterTimeout(snapshotsStatusRequest.masterNodeTimeout());
        parameters.withIgnoreUnavailable(snapshotsStatusRequest.ignoreUnavailable());
        request.addParameters(parameters.asMap());
        return request;
    }

    static Request restoreSnapshot(RestoreSnapshotRequest restoreSnapshotRequest) throws IOException {
        String endpoint = new RequestConverters.EndpointBuilder().addPathPartAsIs("_snapshot")
            .addPathPart(restoreSnapshotRequest.repository())
            .addPathPart(restoreSnapshotRequest.snapshot())
            .addPathPartAsIs("_restore")
            .build();
        Request request = new Request(HttpPost.METHOD_NAME, endpoint);
        RequestConverters.Params parameters = new RequestConverters.Params();
        parameters.withMasterTimeout(restoreSnapshotRequest.masterNodeTimeout());
        parameters.withWaitForCompletion(restoreSnapshotRequest.waitForCompletion());
        request.addParameters(parameters.asMap());
        request.setEntity(RequestConverters.createEntity(restoreSnapshotRequest, RequestConverters.REQUEST_BODY_CONTENT_TYPE));
        return request;
    }

    static Request deleteSnapshot(DeleteSnapshotRequest deleteSnapshotRequest) {
        String endpoint = new RequestConverters.EndpointBuilder().addPathPartAsIs("_snapshot")
            .addPathPart(deleteSnapshotRequest.repository())
            .addPathPart(deleteSnapshotRequest.snapshot())
            .build();
        Request request = new Request(HttpDelete.METHOD_NAME, endpoint);

        RequestConverters.Params parameters = new RequestConverters.Params();
        parameters.withMasterTimeout(deleteSnapshotRequest.masterNodeTimeout());
        request.addParameters(parameters.asMap());
        return request;
    }
}