/*-
 * ============LICENSE_START=======================================================
 * ONAP - SO
 * ================================================================================
 * Copyright (C) 2017 - 2018 AT&T Intellectual Property. All rights reserved.
 * ================================================================================
 * Modifications Copyright (c) 2019 Samsung
 * ================================================================================
 * 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.
 * ============LICENSE_END=========================================================
 */

package org.onap.so.client.sniro;


import static org.apache.commons.lang3.StringUtils.*;
import java.util.Map;
import org.json.JSONObject;
import org.onap.so.client.exception.BadResponseException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;



@Component
public class SniroValidator {

    private static final Logger logger = LoggerFactory.getLogger(SniroValidator.class);

    private static final String MESSAGE_NOT_PROVIDED = "error message not provided";

    /**
     * Validates the synchronous homing response from sniro manager
     *
     * @throws BadResponseException
     */
    public void validateDemandsResponse(Map<String, Object> response) throws BadResponseException {
        logger.debug("Validating Sniro Managers synchronous response");
        if (!response.isEmpty()) {
            JSONObject jsonResponse = new JSONObject(response);
            if (jsonResponse.has("requestStatus")) {
                String status = jsonResponse.getString("requestStatus");
                if ("accepted".equals(status)) {
                    logger.debug("Sniro Managers synchronous response indicates accepted");
                } else {
                    String message = jsonResponse.getString("statusMessage");
                    if (isNotBlank(message)) {
                        logger.debug("Sniro Managers response indicates failed: {}", message);
                    } else {
                        logger.debug("Sniro Managers response indicates failed: no status message provided");
                        message = MESSAGE_NOT_PROVIDED;
                    }
                    throw new BadResponseException("Sniro Managers synchronous response indicates failed: " + message);
                }
            } else {
                logger.debug("Sniro Managers synchronous response does not contain: request status");
                throw new BadResponseException("Sniro Managers synchronous response does not contain: request status");
            }
        } else {
            logger.debug("Sniro Managers synchronous response is empty");
            throw new BadResponseException("Sniro Managers synchronous response is empty");
        }
    }

    /**
     * Validates the asynchronous/callback response from sniro manager which contains the homing and licensing solutions
     *
     * @throws BadResponseException
     */
    public static void validateSolution(String response) throws BadResponseException {
        logger.debug("Validating Sniro Managers asynchronous callback response");
        if (isNotBlank(response)) {
            JSONObject jsonResponse = new JSONObject(response);
            if (!jsonResponse.has("serviceException")) {
                logger.debug("Sniro Managers asynchronous response is valid");
            } else {
                String message = jsonResponse.getJSONObject("serviceException").getString("text");
                if (isNotBlank(message)) {
                    logger.debug("Sniro Managers response contains a service exception: {}", message);
                } else {
                    logger.debug(
                            "Sniro Managers response contains a service exception: no service exception text provided");
                    message = MESSAGE_NOT_PROVIDED;
                }
                throw new BadResponseException(
                        "Sniro Managers asynchronous response contains a service exception: " + message);
            }
        } else {
            logger.debug("Sniro Managers asynchronous response is empty");
            throw new BadResponseException("Sniro Managers asynchronous response is empty");
        }
    }


    /**
     * Validates the release response from sniro conductor
     *
     * @throws BadResponseException
     */
    public void validateReleaseResponse(Map<String, Object> response) throws BadResponseException {
        logger.debug("Validating Sniro Conductors response");
        if (!response.isEmpty()) {
            String status = (String) response.get("status");
            if (isNotBlank(status)) {
                if ("success".equals(status)) {
                    logger.debug("Sniro Conductors synchronous response indicates success");
                } else {
                    String message = (String) response.get("message");
                    if (isNotBlank(message)) {
                        logger.debug("Sniro Conductors response indicates failed: {}", message);
                    } else {
                        logger.debug("Sniro Conductors response indicates failed: error message not provided");
                        message = MESSAGE_NOT_PROVIDED;
                    }
                    throw new BadResponseException(
                            "Sniro Conductors synchronous response indicates failed: " + message);
                }
            } else {
                logger.debug("Sniro Managers Conductors response does not contain: status");
                throw new BadResponseException("Sniro Conductors synchronous response does not contain: status");
            }
        } else {
            logger.debug("Sniro Conductors response is empty");
            throw new BadResponseException("Sniro Conductors response is empty");
        }

    }

}