/*-
 * ============LICENSE_START=======================================================
 * ONAP CLAMP
 * ================================================================================
 * Copyright (C) 2018 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.clamp.clds.service;

import java.util.Date;
import java.util.List;

import javax.annotation.PostConstruct;

import org.onap.clamp.clds.dao.CldsDao;
import org.onap.clamp.clds.model.CldsDictionary;
import org.onap.clamp.clds.model.CldsDictionaryItem;
import org.onap.clamp.clds.util.LoggingUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Component;

/**
 * REST services to manage dictionary and dictionary items for Tosca Model
 */
@Component
public class CldsDictionaryService extends SecureServiceBase {

	@Value("${clamp.config.security.permission.type.tosca:permission-type-tosca}")
	private String cldsPermissionTypeTosca;
	@Value("${clamp.config.security.permission.instance:dev}")
	private String cldsPermissionInstance;
	private SecureServicePermission permissionReadTosca;
	private SecureServicePermission permissionUpdateTosca;

	@Autowired
	private CldsDao cldsDao;

	@PostConstruct
	private final void initConstruct() {
		permissionReadTosca = SecureServicePermission.create(cldsPermissionTypeTosca, cldsPermissionInstance, "read");
        permissionUpdateTosca = SecureServicePermission.create(cldsPermissionTypeTosca, cldsPermissionInstance, "update");
	}

	/**
	 *  REST Service that creates or Updates a Dictionary
	 *  
	 * @param dictionaryName
	 * @param cldsDictionary
	 * @return CldsDictionary that was created in DB.
	 */
	public ResponseEntity<CldsDictionary> createOrUpdateDictionary(String dictionaryName,
			CldsDictionary cldsDictionary) {
		Date startTime = new Date();
		LoggingUtils.setRequestContext("CldsDictionaryService: createOrUpdateDictionary", getPrincipalName());
		// TODO revisit based on new permissions
		isAuthorized(permissionUpdateTosca);
		if (cldsDictionary == null) {
			cldsDictionary = new CldsDictionary();
			cldsDictionary.setDictionaryName(dictionaryName);
		}
		cldsDictionary.save(dictionaryName, cldsDao, getUserId());
		LoggingUtils.setTimeContext(startTime, new Date());
		LoggingUtils.setResponseContext("0", "createOrUpdateDictionary success", this.getClass().getName());
		auditLogger.info("createOrUpdateDictionary completed");
		return new ResponseEntity<>(cldsDictionary, HttpStatus.OK);
	}

	/**
	 * REST Service that creates or Updates a Dictionary Elements for dictionary in DB
	 * 
	 * @param dictionaryName
	 * @param dictionaryItem
	 * @return CldsDictionaryItem
	 * 			A dictionary items that was created or updated in DB
	 */
	public ResponseEntity<CldsDictionaryItem> createOrUpdateDictionaryElements(String dictionaryName,
			CldsDictionaryItem dictionaryItem) {
		Date startTime = new Date();
		LoggingUtils.setRequestContext("CldsDictionaryService: createOrUpdateDictionaryElements", getPrincipalName());
		// TODO revisit based on new permissions
		isAuthorized(permissionUpdateTosca);
		dictionaryItem.save(dictionaryName, cldsDao, getUserId());
		LoggingUtils.setTimeContext(startTime, new Date());
		LoggingUtils.setResponseContext("0", "createOrUpdateDictionaryElements success", this.getClass().getName());
		auditLogger.info("createOrUpdateDictionaryElements completed");
		return new ResponseEntity<>(dictionaryItem, HttpStatus.OK);
	}

	/**
	 * Rest Service that retrieves all CLDS dictionary in DB
	 * 
	 * @return CldsDictionary List
	 * 			List of CldsDictionary available in DB
	 */
	public ResponseEntity<List<CldsDictionary>> getAllDictionaryNames() {
		Date startTime = new Date();
		LoggingUtils.setRequestContext("CldsDictionaryService: getAllDictionaryNames", getPrincipalName());
		// TODO revisit based on new permissions
		isAuthorized(permissionReadTosca);
		List<CldsDictionary> dictionaries = cldsDao.getDictionary(null, null);
		LoggingUtils.setTimeContext(startTime, new Date());
		LoggingUtils.setResponseContext("0", "getAllDictionaryNames success", this.getClass().getName());
		auditLogger.info("getAllDictionaryNames completed");
		return new ResponseEntity<>(dictionaries, HttpStatus.OK);
	}

	/**
	 * Rest Service that retrieves all CLDS dictionary items in DB for a give dictionary name
	 * 
	 * @param dictionaryName
	 * @return CldsDictionaryItem list
	 * 			List of CLDS Dictionary items for a given dictionary name
	 */
	public ResponseEntity<List<CldsDictionaryItem>> getDictionaryElementsByName(String dictionaryName) {
		Date startTime = new Date();
		LoggingUtils.setRequestContext("CldsDictionaryService: getDictionaryElementsByName", getPrincipalName());
		// TODO revisit based on new permissions
		isAuthorized(permissionReadTosca);
		List<CldsDictionaryItem> dictionaryItems = cldsDao.getDictionaryElements(dictionaryName, null, null);
		LoggingUtils.setTimeContext(startTime, new Date());
		LoggingUtils.setResponseContext("0", "getAllDictionaryNames success", this.getClass().getName());
		auditLogger.info("getAllDictionaryNames completed");
		return new ResponseEntity<>(dictionaryItems, HttpStatus.OK);
	}

	public ResponseEntity<?> deleteDictionary() {
		return null;
	}

}