/*-
 * ============LICENSE_START=======================================================
 * ONAP-PDP-REST
 * ================================================================================
 * 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.policy.pdp.rest.api.services;

import java.util.Map;

import org.onap.policy.api.AttributeType;
import org.onap.policy.api.PolicyException;
import org.onap.policy.api.PolicyParameters;
import org.onap.policy.common.logging.flexlogger.FlexLogger;
import org.onap.policy.common.logging.flexlogger.Logger;
import org.onap.policy.pdp.rest.api.utils.PolicyApiUtils;
import org.onap.policy.xacml.api.XACMLErrorConstants;
import org.onap.policy.xacml.std.pap.StdPAPPolicy;

/**
 * BRMS Param Policy Implementation.  
 * 
 * @version 0.1
 */
public class BRMSParamPolicyService{
	private static final Logger LOGGER = FlexLogger.getLogger(BRMSParamPolicyService.class.getName());
	private PAPServices papServices = null;
	
	private PolicyParameters policyParameters = null;
	private String message = null;
	private String policyName = null;
	private String policyScope = null;
	private String date = null; 
	private Map<AttributeType, Map<String, String>> drlRuleAndUIParams = null;
	
	public BRMSParamPolicyService(String policyName, String policyScope,
			PolicyParameters policyParameters, String date) {
		this.policyParameters = policyParameters;
		this.policyName = policyName;
		this.policyScope = policyScope;
		this.date = date;
		papServices = new PAPServices();
	}

	public Boolean getValidation() {
		boolean levelCheck = PolicyApiUtils.isNumeric(policyParameters.getRiskLevel());
		if(!levelCheck){
			message = XACMLErrorConstants.ERROR_DATA_ISSUE + "Incorrect Risk Level given.";
			return false;
		}
		drlRuleAndUIParams = policyParameters.getAttributes();
		if(drlRuleAndUIParams==null || drlRuleAndUIParams.isEmpty()){
			message = XACMLErrorConstants.ERROR_DATA_ISSUE + "No Rule Attributes given.";
			return false;
		}
		return true;
	}

	public String getMessage() {
		return message;
	}

	public String getResult(boolean updateFlag) throws PolicyException {
		String response = null;
		String operation = null;
		if (updateFlag){
			operation = "update";
		} else {
			operation = "create";
		}
		// Create Policy
		StdPAPPolicy newPAPPolicy = new StdPAPPolicy("BRMS_Param",policyName, policyParameters.getPolicyDescription(),
				"BRMS_PARAM_RULE",updateFlag,policyScope, 
				drlRuleAndUIParams.get(AttributeType.MATCHING), 0, "DROOLS", 
				null, drlRuleAndUIParams.get(AttributeType.RULE), policyParameters.getRiskLevel(),
				policyParameters.getRiskType(), String.valueOf(policyParameters.getGuard()), date, policyParameters.getControllerName(), policyParameters.getDependencyNames());
		// Send JSON to PAP 
		response = (String) papServices.callPAP(newPAPPolicy, new String[] {"operation="+operation, "apiflag=api", "policyType=Config"}, policyParameters.getRequestID(), "ConfigBrmsParam");
		LOGGER.info(response);
		return response;
	}

}