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/*-
 * ============LICENSE_START=======================================================
 * ONAP - SO
 * ================================================================================
 * Copyright (C) 2017 AT&T Intellectual Property. 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.flowspecific.tasks;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Optional;

import org.onap.appc.client.lcm.model.Action;
import org.onap.so.bpmn.appc.payload.beans.ConfigScaleOutPayload;
import org.onap.so.bpmn.appc.payload.beans.RequestParametersConfigScaleOut;
import org.onap.so.bpmn.common.BuildingBlockExecution;
import org.onap.so.bpmn.servicedecomposition.bbobjects.GenericVnf;
import org.onap.so.bpmn.servicedecomposition.bbobjects.VfModule;
import org.onap.so.bpmn.servicedecomposition.entities.GeneralBuildingBlock;
import org.onap.so.bpmn.servicedecomposition.entities.ResourceKey;
import org.onap.so.bpmn.servicedecomposition.tasks.ExtractPojosForBB;
import org.onap.so.client.appc.ApplicationControllerAction;
import org.onap.so.client.exception.ExceptionBuilder;
import org.onap.so.db.catalog.beans.ControllerSelectionReference;
import org.onap.so.db.catalog.client.CatalogDbClient;
import org.onap.so.logger.MessageEnum;
import org.onap.so.logger.MsoLogger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.jayway.jsonpath.JsonPath;

@Component
public class ConfigurationScaleOut {

        private static final MsoLogger msoLogger = MsoLogger.getMsoLogger(MsoLogger.Catalog.BPEL, ConfigurationScaleOut.class);
        @Autowired
        private ExceptionBuilder exceptionUtil;
        @Autowired
        private ExtractPojosForBB extractPojosForBB;
        @Autowired
        private CatalogDbClient catalogDbClient;
        @Autowired
        private ApplicationControllerAction appCClient;
        private static final String ACTION = "action";
        private static final String MSO_REQUEST_ID = "msoRequestId";
        private static final String VNF_ID = "vnfId";
        private static final String VNF_NAME = "vnfName";
        private static final String VFMODULE_ID = "vfModuleId";
        private static final String CONTROLLER_TYPE = "controllerType";
        private static final String PAYLOAD = "payload";
        
        public void setParamsForConfigurationScaleOut(BuildingBlockExecution execution) {
                
                GeneralBuildingBlock gBBInput = execution.getGeneralBuildingBlock();
                
                try {
                        List<Map<String, String>> jsonPathForCfgParams = gBBInput.getRequestContext().getConfigurationParameters();
                        String key = null;
                        String paramValue = null;
                        ObjectMapper mapper = new ObjectMapper();
                        String configScaleOutPayloadString = null;
                        ControllerSelectionReference controllerSelectionReference;
                        ConfigScaleOutPayload configPayload = new ConfigScaleOutPayload();
                        GenericVnf vnf = extractPojosForBB.extractByKey(execution, ResourceKey.GENERIC_VNF_ID, execution.getLookupMap().get(ResourceKey.GENERIC_VNF_ID));
                        String vnfId = vnf.getVnfId();
                        String vnfName = vnf.getVnfName();      
                        String vnfType = vnf.getVnfType();
                        String actionCategory = Action.ConfigScaleOut.toString();
                        controllerSelectionReference = catalogDbClient.getControllerSelectionReferenceByVnfTypeAndActionCategory(vnfType, actionCategory);
                        String controllerName = controllerSelectionReference.getControllerName();
                        
                        VfModule vfModule = extractPojosForBB.extractByKey(execution, ResourceKey.VF_MODULE_ID, execution.getLookupMap().get(ResourceKey.VF_MODULE_ID));
                        String sdncVfModuleQueryResponse = execution.getVariable("SDNCQueryResponse_" + vfModule.getVfModuleId());
                        
                        Map<String, String> paramsMap = new HashMap<>();
                        RequestParametersConfigScaleOut requestParameters = new RequestParametersConfigScaleOut();
                        String configScaleOutParam = null;
                        if (jsonPathForCfgParams != null) {
                                for (Map<String, String> param : jsonPathForCfgParams) {
                                        for (Map.Entry<String,String> entry : param.entrySet()) {
                                                key = entry.getKey();
                                                paramValue = entry.getValue();
                                                try{
                                                        configScaleOutParam = JsonPath.parse(sdncVfModuleQueryResponse).read(paramValue);
                                                }catch(ClassCastException e){
                                                        configScaleOutParam = null;
                                                        msoLogger.warnSimple("Incorrect JSON path. Path points to object rather than value causing: ", e);
                                                }
                                                paramsMap.put(key, configScaleOutParam);
                                        }
                                }
                        }
                        requestParameters.setVfModuleId(vfModule.getVfModuleId());
                        requestParameters.setVnfHostIpAddress(vnf.getIpv4OamAddress());
                        configPayload.setConfigurationParameters(paramsMap);
                        configPayload.setRequestParameters(requestParameters);
                        configScaleOutPayloadString = mapper.writeValueAsString(configPayload);
                        
                        execution.setVariable(ACTION, actionCategory);
                        execution.setVariable(MSO_REQUEST_ID, gBBInput.getRequestContext().getMsoRequestId());
                        execution.setVariable(VNF_ID, vnfId);
                        execution.setVariable(VNF_NAME, vnfName);
                        execution.setVariable(VFMODULE_ID, vfModule.getVfModuleId());
                        execution.setVariable(CONTROLLER_TYPE, controllerName);
                        execution.setVariable(PAYLOAD, configScaleOutPayloadString);
                } catch (Exception ex) {
                        exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
                }
        }
        
        public void callAppcClient(BuildingBlockExecution execution) {
                msoLogger.trace("Start runAppcCommand ");
                String appcCode = "1002";
                String appcMessage = "";
                try{
                        Action commandAction = Action.valueOf(execution.getVariable(ACTION));
                        String msoRequestId = execution.getVariable(MSO_REQUEST_ID);
                        String vnfId = execution.getVariable(VNF_ID);
                        Optional<String> payloadString = null;
                        if(execution.getVariable(PAYLOAD) != null){
                                String pay = execution.getVariable(PAYLOAD);
                                payloadString =  Optional.of(pay);
                        }
                        String controllerType = execution.getVariable(CONTROLLER_TYPE);
                        HashMap<String, String> payloadInfo = new HashMap<>();
                        payloadInfo.put(VNF_NAME, execution.getVariable(VNF_NAME));
                        payloadInfo.put(VFMODULE_ID,execution.getVariable(VFMODULE_ID));
                        msoLogger.debug("Running APP-C action: " + commandAction.toString());
                        msoLogger.debug("VNFID: " + vnfId);     
                        //PayloadInfo contains extra information that adds on to payload before making request to appc
                        appCClient.runAppCCommand(commandAction, msoRequestId, vnfId, payloadString, payloadInfo, controllerType);
                        appcCode = appCClient.getErrorCode();
                        appcMessage = appCClient.getErrorMessage();
                
                } catch (Exception e) {
                        msoLogger.error(MessageEnum.BPMN_GENERAL_EXCEPTION, "Caught exception in runAppcCommand in ConfigurationScaleOut", "BPMN", MsoLogger.getServiceName(), MsoLogger.ErrorCode.UnknownError, "APPC Error", e);
                        appcMessage = e.getMessage();
                }
                msoLogger.error("Error Message: " + appcMessage);
                msoLogger.error("ERROR CODE: " + appcCode);
                msoLogger.trace("End of runAppCommand ");
                if (appcCode != null && !appcCode.equals("0")) {
                        exceptionUtil.buildAndThrowWorkflowException(execution, Integer.parseInt(appcCode), appcMessage);
                }
        }
}