/*-
 * ============LICENSE_START=======================================================
 * ONAP : APP-C
 * ================================================================================
 * 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.sdnc.dg.loader;

import java.io.File;
import java.util.ArrayList;
import java.util.List;

import org.apache.commons.io.FileUtils;
import org.apache.commons.lang.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import org.openecomp.sdnc.sli.SvcLogicException;
import org.openecomp.sdnc.sli.SvcLogicGraph;
import org.openecomp.sdnc.sli.SvcLogicParser;
import org.openecomp.sdnc.sli.SvcLogicStore;
import org.openecomp.sdnc.sli.SvcLogicStoreFactory;

public class DGXMLLoadNActivate {
	private final static Logger logger = LoggerFactory.getLogger(DGXMLLoadNActivate.class);
	private final SvcLogicStore store;
	public static String STRING_ENCODING = "utf-8";

	public DGXMLLoadNActivate(String propfile) throws Exception{
		if(StringUtils.isBlank(propfile)){
			throw new Exception(propfile + " Profile file is not defined");
		}
		this.store = SvcLogicStoreFactory.getSvcLogicStore(propfile);
	}

	public void loadDGXMLFile(String dgXMLpath) throws SvcLogicException{
		if(dgXMLpath != null ){
			SvcLogicParser.load(dgXMLpath, this.store);
		}
	}

	private void loadDGXMLDir(String xmlPath) throws Exception {
		try {
			logger.info("******************** Loading DG into Database *****************************");
			List<String> errors = new ArrayList<String>();
			if(this.store != null){
				File xmlDir = new File(xmlPath);
				if(xmlDir != null && xmlDir.isDirectory()){
					String[] extensions = new String[] { "xml", "XML" };
					List<File> files = (List<File>) FileUtils.listFiles(xmlDir, extensions, true);
					for (File file : files) {
						logger.info("Loading DG XML file :" + file.getCanonicalPath());
						try{
							SvcLogicParser.load(file.getCanonicalPath(), this.store);
						}catch (Exception e) {
							errors.add("Failed to load XML "+file.getCanonicalPath() + ", Exception : "+e.getMessage());
						}
					}
				}else{
					throw new Exception(xmlPath + " is not a valid XML Directory");
				}
			}else{
				throw new Exception("Failed to initialise SvcLogicStore");
			}

			if(errors.size() > 0){
				throw new Exception(errors.toString());
			}
		} catch (Exception e) {
			logger.error(e.getMessage());
		}
	}

	public void activateDg(String activateFilePath) throws Exception {
		logger.info("******************** Activating DG into Database *****************************");
		try {
			List<String> errors = new ArrayList<String>();
			if(this.store != null){
				File activateFile = new File(activateFilePath);
				if(activateFile != null && activateFile.isFile()){
					List<String> fileLines = FileUtils.readLines(activateFile,STRING_ENCODING);
					if(fileLines != null ){
						for (String line : fileLines) {
							if(line != null && ! line.trim().startsWith("#")){
								String lineArray[] = line.trim().split(":");
								try {
									if(lineArray != null && lineArray.length >= 4){
										String module = lineArray[0];
										String rpc = lineArray[1];
										String version = lineArray[2];
										String mode = lineArray[3];
										if(StringUtils.isNotBlank(module) && StringUtils.isNotBlank(rpc)
												&& StringUtils.isNotBlank(version) && StringUtils.isNotBlank(mode)){
											logger.info("Activating DG :" + line);
											SvcLogicGraph graph = this.store.fetch(module, rpc, version, mode);
											if(graph != null){
												logger.info("Found Graph :" + line + " Activating ...");
												this.store.activate(graph);
											}else{
												throw new Exception("Failed to fetch from Database");
											}
										}
									}
								} catch (Exception e) {
									e.printStackTrace();
									errors.add("Failed to Activate "+line + ", "+e.getMessage());
								}
							}
						}
					}
				}else{
					throw new Exception(activateFile + " is not a valid Activate file Path");
				}
			}else{
				throw new Exception("Failed to initialise SvcLogicStore");
			}

			if(errors.size() > 0){
				throw new Exception(errors.toString());
			}
		} catch (Exception e) {
			logger.error(e.getMessage());
		}
	}


	public static void main(String[] args) {
		try {
			String xmlPath = null;
			String propertyPath = null;
			String activateFile = null;

			if(args != null && args.length >= 3){
				xmlPath = args[0];
				activateFile = args[1];
				propertyPath = args[2];
			}else{
				throw new Exception("Sufficient inputs for DGXMLLoadNActivate are missing <xmlpath> <activatefile> <dbPropertyfile>");
			}

			//propertyPath = "/Users/bs2796/0Source/ecomp/bvc-3.2.2/others/properties/dblib.properties";
			//xmlPath = DGXMLLoadNActivate.class.getClassLoader().getResource(".").getPath() +"/xml" ;

			DGXMLLoadNActivate dgXMLLoadDB = new DGXMLLoadNActivate(propertyPath);
			dgXMLLoadDB.loadDGXMLDir(xmlPath);
			dgXMLLoadDB.activateDg(activateFile);
		} catch (Exception e) {
			e.printStackTrace();
		}finally {
			System.exit(1);
		}
	}

}