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/**
 * phone-home-client
 *
 * Copyright (c) 2019 Synopsys, Inc.
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF 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 com.synopsys.integration.phonehome;

import java.util.Collections;
import java.util.Map;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Future;

import com.synopsys.integration.log.IntLogger;

public class PhoneHomeService {
    private final IntLogger logger;
    private final PhoneHomeClient phoneHomeClient;
    private final ExecutorService executorService;

    public static PhoneHomeService createPhoneHomeService(final IntLogger logger, final PhoneHomeClient phoneHomeClient) {
        return new PhoneHomeService(logger, phoneHomeClient, null);
    }

    public static PhoneHomeService createAsynchronousPhoneHomeService(final IntLogger logger, final PhoneHomeClient phoneHomeClient, final ExecutorService executorService) {
        return new PhoneHomeService(logger, phoneHomeClient, executorService);
    }

    private PhoneHomeService(final IntLogger logger, final PhoneHomeClient phoneHomeClient, final ExecutorService executorService) {
        this.logger = logger;
        this.phoneHomeClient = phoneHomeClient;
        this.executorService = executorService;
    }

    public PhoneHomeResponse phoneHome(final PhoneHomeRequestBody phoneHomeRequestBody) {
        return phoneHome(phoneHomeRequestBody, Collections.emptyMap());
    }

    public PhoneHomeResponse phoneHome(final PhoneHomeRequestBody phoneHomeRequestBody, final Map environmentVariables) {
        Future phoneHomeTask = null;
        final PhoneHomeCallable phoneHomeCallable = new PhoneHomeCallable(phoneHomeRequestBody, environmentVariables);
        if (executorService == null) {
            final Boolean result = phoneHomeCallable.call();
            return PhoneHomeResponse.createResponse(result);
        } else {
            try {
                phoneHomeTask = executorService.submit(phoneHomeCallable);
            } catch (final Exception e) {
                logger.debug("Problem executing phone home asynchronously: " + e.getMessage(), e);
            }
        }
        return PhoneHomeResponse.createAsynchronousResponse(phoneHomeTask);
    }

    private class PhoneHomeCallable implements Callable {
        private final PhoneHomeRequestBody phoneHomeRequestBody;
        private final Map environmentVariables;

        public PhoneHomeCallable(final PhoneHomeRequestBody phoneHomeRequestBody, final Map environmentVariables) {
            this.phoneHomeRequestBody = phoneHomeRequestBody;
            this.environmentVariables = environmentVariables;
        }

        @Override
        public Boolean call() {
            Boolean result = Boolean.FALSE;
            try {
                logger.debug("starting phone home");
                phoneHomeClient.postPhoneHomeRequest(phoneHomeRequestBody, environmentVariables);
                result = Boolean.TRUE;
                logger.debug("completed phone home");
            } catch (final Exception ex) {
                logger.debug("Phone home error.", ex);
            }

            return result;
        }
    }
}