/*-
 * ============LICENSE_START=======================================================
 * OPENECOMP - SO
 * ================================================================================
 * Copyright (C) 2018 Huawei Technologies Co., Ltd. All rights reserved.
 * ================================================================================
 * 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.bpmn.infrastructure.scripts

import org.json.JSONObject
import org.json.XML;

import static org.apache.commons.lang3.StringUtils.*;
import groovy.xml.XmlUtil
import org.onap.so.bpmn.common.scripts.AbstractServiceTaskProcessor
import org.onap.so.bpmn.common.scripts.ExceptionUtil
import org.onap.so.bpmn.common.recipe.ResourceInput;
import org.onap.so.bpmn.common.resource.ResourceRequestBuilder
import org.onap.so.bpmn.core.WorkflowException
import org.onap.so.bpmn.core.json.JsonUtils
import org.onap.so.bpmn.infrastructure.workflow.serviceTask.client.builder.AbstractBuilder
import org.onap.so.logger.MsoLogger
import org.onap.so.rest.APIResponse
import org.onap.so.bpmn.common.scripts.SDNCAdapterUtils

import java.util.UUID;

import org.camunda.bpm.engine.delegate.BpmnError
import org.camunda.bpm.engine.delegate.DelegateExecution
import org.apache.commons.lang3.*
import org.apache.commons.codec.binary.Base64;
import org.springframework.web.util.UriUtils
import org.onap.so.rest.RESTClient
import org.onap.so.rest.RESTConfig
import org.onap.so.rest.APIResponse;
import org.onap.so.bpmn.common.scripts.AaiUtil

/**
 * This groovy class supports the <class>DeleteDeviceResource.bpmn</class> process.
 * flow for Device Resource Delete
 */
public class DeleteDeviceResource extends AbstractServiceTaskProcessor {

    String Prefix="DELDEVRES_"

    ExceptionUtil exceptionUtil = new ExceptionUtil()

    JsonUtils jsonUtil = new JsonUtils()

    private static final MsoLogger msoLogger = MsoLogger.getMsoLogger(MsoLogger.Catalog.BPEL, DeleteDeviceResource.class)

    public void preProcessRequest(DelegateExecution execution){
        msoLogger.info(" ***** Started preProcessRequest *****")
        try {

            //get bpmn inputs from resource request.
            String requestId = execution.getVariable("mso-request-id")
            String requestAction = execution.getVariable("requestAction")
            msoLogger.info("The requestAction is: " + requestAction)
            String recipeParamsFromRequest = execution.getVariable("recipeParams")
            msoLogger.info("The recipeParams is: " + recipeParamsFromRequest)
            String resourceInput = execution.getVariable("resourceInput")
            msoLogger.info("The resourceInput is: " + resourceInput)
            //Get ResourceInput Object
            ResourceInput resourceInputObj = ResourceRequestBuilder.getJsonObject(resourceInput, ResourceInput.class)
            execution.setVariable(Prefix + "ResourceInput", resourceInputObj)
            String resourceInputPrameters = resourceInputObj.getResourceParameters()
            String inputParametersJson = jsonUtil.getJsonValue(resourceInputPrameters, "requestInputs")
            JSONObject inputParameters = new JSONObject(inputParametersJson)
            execution.setVariable(Prefix + "ResourceRequestInputs", inputParameters)

            //Deal with recipeParams
            String recipeParamsFromWf = execution.getVariable("recipeParamXsd")
            String resourceName = resourceInputObj.getResourceInstanceName()

            String resourceInstanceId = resourceInputObj.getResourceInstancenUuid()
            String deviceId = resourceInstanceId
            execution.setVariable(Prefix + "DeviceId", deviceId)

            getDeviceInAAI(execution)

            execution.setVariable(Prefix + "serviceInstanceId", resourceInputObj.getServiceInstanceId())
            execution.setVariable("mso-request-id", requestId)

        } catch (BpmnError e) {
            throw e;
        } catch (Exception ex){
            String msg = "Exception in preProcessRequest " + ex.getMessage()
            msoLogger.debug(msg)
            exceptionUtil.buildAndThrowWorkflowException(execution, 7000, msg)
        }
    }

	private void getDeviceInAAI(DelegateExecution execution) {
		msoLogger.info(" ***** Started getDeviceInAAI *****")
		
		String deviceId = execution.getVariable(Prefix + "DeviceId")
		AaiUtil aaiUriUtil = new AaiUtil()
		String aai_uri = aaiUriUtil.getNetworkDeviceUri(execution)
		String aai_endpoint = execution.getVariable("URN_aai_endpoint")
		String serviceAaiPath = "${aai_endpoint}${aai_uri}/" + UriUtils.encode(deviceId,"UTF-8")
		execution.setVariable(Prefix + "ServiceAaiPath", serviceAaiPath)
		
		APIResponse response = aaiUriUtil.executeAAIGetCall(execution, serviceAaiPath)
		int responseCode = response.getStatusCode()
		execution.setVariable(Prefix + "GetDeviceResponseCode", responseCode)
		msoLogger.debug("  Get device response code is: " + responseCode)

		String aaiResponse = response.getResponseBodyAsString()
		aaiResponse = StringEscapeUtils.unescapeXml(aaiResponse)
		aaiResponse = aaiResponse.replaceAll("&", "&amp;")
		execution.setVariable(Prefix + "GetDeviceResponse", aaiResponse)

		//Process Response
		if(responseCode == 200 || responseCode == 201 || responseCode == 202 )
			//200 OK 201 CREATED 202 ACCEPTED
		{
			msoLogger.debug("GET Device Received a Good Response")
			execution.setVariable(Prefix + "SuccessIndicator", true)
			execution.setVariable(Prefix + "FoundIndicator", true)
			
			String devClass = utils.getNodeText1(aaiResponse, "device_class")
			execution.setVariable(Prefix + "DeviceClass", devClass)
			msoLogger.debug(" DeviceClass is: " + devClass)

		}
		else
		{
			msoLogger.debug("Get DeviceInAAI Received a Bad Response Code. Response Code is: " + responseCode)

		}

		msoLogger.info(" ***** Exit getDeviceInAAI *****")
	}

    public void checkDevType(DelegateExecution execution){
        msoLogger.info(" ***** Started checkDevType *****")
        try {

            String devType = execution.getVariable(Prefix + "DeviceClass")

            if(StringUtils.isBlank(devType)) {
                devType = "OTHER"
            }

            execution.setVariable("device_class", devType)

        } catch (Exception ex){
            String msg = "Exception in checkDevType " + ex.getMessage()
            msoLogger.debug( msg)
            exceptionUtil.buildAndThrowWorkflowException(execution, 7000, msg)
        }
    }

	private void setProgressUpdateVariables(DelegateExecution execution, String body) {
		def dbAdapterEndpoint = execution.getVariable("URN_mso_adapters_openecomp_db_endpoint")
		execution.setVariable("CVFMI_dbAdapterEndpoint", dbAdapterEndpoint)
		execution.setVariable("CVFMI_updateResOperStatusRequest", body)
	}

	public void prepareUpdateProgress(DelegateExecution execution) {
		msoLogger.info(" ***** Started prepareUpdateProgress *****")
		ResourceInput resourceInputObj = execution.getVariable(Prefix + "ResourceInput")
		String operType = resourceInputObj.getOperationType()
		String resourceCustomizationUuid = resourceInputObj.getResourceModelInfo().getModelCustomizationUuid()
		String ServiceInstanceId = resourceInputObj.getServiceInstanceId()
		String modelName = resourceInputObj.getResourceModelInfo().getModelName()
		String operationId = resourceInputObj.getOperationId()
		String progress = execution.getVariable("progress")
		String status = execution.getVariable("status")
		String statusDescription = execution.getVariable("statusDescription")

		String body = """
                <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
                        xmlns:ns="http://org.openecomp.mso/requestsdb">
                        <soapenv:Header/>
                <soapenv:Body>
                    <ns:updateResourceOperationStatus>
                               <operType>${operType}</operType>
                               <operationId>${operationId}</operationId>
                               <progress>${progress}</progress>
                               <resourceTemplateUUID>${resourceCustomizationUuid}</resourceTemplateUUID>
                               <serviceId>${ServiceInstanceId}</serviceId>
                               <status>${status}</status>
                               <statusDescription>${statusDescription}</statusDescription>
                    </ns:updateResourceOperationStatus>
                </soapenv:Body>
                </soapenv:Envelope>"""

		setProgressUpdateVariables(execution, body)
		msoLogger.info(" ***** Exit prepareUpdateProgress *****")
	}

    public void getVNFTemplatefromSDC(DelegateExecution execution){
        msoLogger.info(" ***** Started getVNFTemplatefromSDC *****")
        try {
            // To do


        } catch (Exception ex){
            String msg = "Exception in getVNFTemplatefromSDC " + ex.getMessage()
            msoLogger.debug( msg)
            exceptionUtil.buildAndThrowWorkflowException(execution, 7000, msg)
        }
    }

    public void postVNFInfoProcess(DelegateExecution execution){
        msoLogger.info(" ***** Started postVNFInfoProcess *****")
        try {
            // To do


        } catch (Exception ex){
            String msg = "Exception in postVNFInfoProcess " + ex.getMessage()
            msoLogger.debug( msg)
            exceptionUtil.buildAndThrowWorkflowException(execution, 7000, msg)
        }
    }

    public void sendSyncResponse (DelegateExecution execution) {
        msoLogger.debug( " *** sendSyncResponse *** ")

        try {
            String operationStatus = "finished"
            // RESTResponse for main flow
            String resourceOperationResp = """{"operationStatus":"${operationStatus}"}""".trim()
            msoLogger.debug( " sendSyncResponse to APIH:" + "\n" + resourceOperationResp)
            sendWorkflowResponse(execution, 202, resourceOperationResp)
            execution.setVariable("sentSyncResponse", true)

        } catch (Exception ex) {
            String msg = "Exceptuion in sendSyncResponse:" + ex.getMessage()
            msoLogger.debug( msg)
            exceptionUtil.buildAndThrowWorkflowException(execution, 7000, msg)
        }
        msoLogger.debug(" ***** Exit sendSyncResopnse *****")
    }
}