/*-
 * ============LICENSE_START=======================================================
 * ONAP Policy Engine
 * ================================================================================
 * 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.controller;


import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.json.JSONObject;
import org.onap.policy.common.logging.flexlogger.FlexLogger;
import org.onap.policy.common.logging.flexlogger.Logger;
import org.onap.policy.rest.adapter.PolicyRestAdapter;
import org.onap.policy.rest.util.PolicyValidation;
import org.onap.policy.rest.util.PolicyValidationRequestWrapper;
import org.onap.portalsdk.core.controller.RestrictedBaseController;
import org.onap.portalsdk.core.web.support.JsonMessage;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import com.fasterxml.jackson.databind.ObjectMapper;

@Controller
@RequestMapping("/")
public class PolicyValidationController extends RestrictedBaseController {

	private static final Logger LOGGER	= FlexLogger.getLogger(PolicyValidationController.class);
	
	public static final String CONFIG_POLICY = "Config";
	public static final String ACTION_POLICY = "Action";
	public static final String DECISION_POLICY = "Decision";
	public static final String CLOSEDLOOP_POLICY = "ClosedLoop_Fault";
	public static final String CLOSEDLOOP_PM = "ClosedLoop_PM";
	public static final String ENFORCER_CONFIG_POLICY= "Enforcer Config";
	public static final String MICROSERVICES="Micro Service";

	@RequestMapping(value={"/policyController/validate_policy.htm"}, method={org.springframework.web.bind.annotation.RequestMethod.POST})
	public ModelAndView validatePolicy(HttpServletRequest request, HttpServletResponse response) throws IOException{
		try{
			
			PolicyValidation validation = new PolicyValidation();
			PolicyValidationRequestWrapper wrapper = new PolicyValidationRequestWrapper();
			StringBuilder responseString;
			ObjectMapper mapper = new ObjectMapper();

			PolicyRestAdapter policyData = wrapper.populateRequestParameters(request);
			responseString = validation.validatePolicy(policyData);
			
			PrintWriter out = response.getWriter();
			JsonMessage msg = new JsonMessage(mapper.writeValueAsString(responseString.toString()));
			JSONObject j = new JSONObject(msg);
			out.write(j.toString());

			return null;
		}
		catch (Exception e){
			LOGGER.error("Exception Occured During Policy Validation" +e);
			response.setCharacterEncoding("UTF-8");
			request.setCharacterEncoding("UTF-8");
			PrintWriter out = response.getWriter();
			out.write(e.getMessage());
		}
		return null;
	}
}