/*-
 * ============LICENSE_START=======================================================
 * org.openecomp.aai
 * ================================================================================
 * 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.openecomp.aai.util;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Set;

import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;

import org.openecomp.aai.logging.ErrorLogHelper;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;

public class AAIMechIdConfig {
	private static final EELFLogger LOGGER = EELFManager.getInstance().getLogger(AAIMechIdConfig.class);
	private static final String mechIdConfigFileName = AAIConstants.AAI_HOME_ETC_APP_PROPERTIES + "mechid-config.json";
	
	public static final String SYSTEM_GFP_IP = "GFP";
	public static final String SYSTEM_GCP = "GCP";
	public static final String SYSTEM_DCAE = "DCAE";
	public static final String SYSTEM_RUBY = "RUBY";
	public static final String SYSTEM_ACTION = "ACTION";
	public static final String SYSTEM_INSTAR = "INSTAR-LPP-AMS";
	public static final String FILE_CLASS_GFP_IP = "GFP-IP";
	public static final String FILE_CLASS_INSTAR = "INSTAR-LPP-AMS";
	
	public static HashMap<String, String> mechIdtoSystem = new HashMap<String, String>();
	public static HashMap<String, ArrayList<String>> fileClassToMechId = new HashMap<String, ArrayList<String>>();
	
	/**
	 * Inits the.
	 *
	 * @param tId the t id
	 * @param appId the app id
	 * @param logger the logger
	 */
	public static void init() {
		LOGGER.debug("Initializing AAIMechIdConfig");
		Boolean enable;
		String systemMechId = "";
		JSONParser parser = new JSONParser();
		
		try {
			Object obj = parser.parse(new FileReader(mechIdConfigFileName));
			JSONObject jsonObject = (JSONObject) obj;
			JSONObject mechIds = (JSONObject) jsonObject.get("mech-ids");
			
			@SuppressWarnings("unchecked")
			Set<String> systemSet = mechIds.keySet();
			for (String system : systemSet) {
				JSONObject systemJsonObj = (JSONObject) mechIds.get(system);
				systemMechId = (String) systemJsonObj.get("mechid");
				enable = (Boolean) systemJsonObj.get("enable");
				if (systemMechId != null && !systemMechId.isEmpty() && enable != null && enable == true) {
					mechIdtoSystem.put(systemMechId, system);
					JSONArray fileClasses = (JSONArray) systemJsonObj.get("file-classes");
					if (fileClasses != null ) {
						String fileClass = "";
						for (Object fileClassObj : fileClasses) {
							fileClass = (String) fileClassObj;
						
							if (!fileClassToMechId.containsKey(fileClass)) {
								fileClassToMechId.put(fileClass, new ArrayList<String>());
								fileClassToMechId.get(fileClass).add(systemMechId);
							} else {
								if(!fileClassToMechId.get(fileClass).contains(systemMechId)){
									fileClassToMechId.get(fileClass).add(systemMechId);
								
								}
							}
						}
					}
				}
			}
			
		} catch (FileNotFoundException fnfe) {
			ErrorLogHelper.logError("AAI_4001", 
					" " + mechIdConfigFileName + ". Exception: " + fnfe.getMessage());
		} catch (Exception e) {
			ErrorLogHelper.logError("AAI_4004", 
					" " + mechIdConfigFileName + ". Exception: " + e.getMessage());
		}
	}


	/**
	 * Transform mech id to pickup dir.
	 *
	 * @param systemMechId the system mech id
	 * @return the string
	 */
	public static String transformMechIdToPickupDir(String systemMechId) {
		String pickupDir = "";
		if (systemMechId != null && !systemMechId.isEmpty()) {
			pickupDir = "/opt/aaihome/" + systemMechId + "/pickup";
			
			if (pickupDir != null && !pickupDir.isEmpty() && new File(pickupDir).isDirectory()) {
				return pickupDir;
			}
			
		}
		return null;
	}
	
}