/**
    * Copyright 2010-2013 The Kuali Foundation
    *
    * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
    *
   * 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.
   */
  package org.kuali.common.util.execute;
  
  import java.io.File;
  import java.util.List;
  import java.util.Properties;
  
  import org.kuali.common.util.CollectionUtils;
  import org.kuali.common.util.ComparisonResults;
  import org.kuali.common.util.LocationUtils;
  import org.kuali.common.util.PropertyUtils;
  import org.kuali.common.util.SimpleScanner;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.util.Assert;
  
  /**
   * This executable compares the files found by the given pattern in two different locations and populates a properties
   * object with information about the comparison
   * 
   * @author andrewlubbers
   */
  public class FileListComparisonExecutable implements Executable {
  
  	private static final Logger logger = LoggerFactory.getLogger(FileListComparisonExecutable.class);
  
  	private String newFilesBaseDir;
  	private String filePattern;
  	private String originalFilesBaseDir;
  	private List<String> propertyNames;
  	private Properties mavenProperties;
  
  	@Override
  	public void execute() {
  		Assert.notNull(mavenProperties);
  		Assert.notNull(propertyNames);
  		Assert.notNull(newFilesBaseDir);
  		Assert.notNull(originalFilesBaseDir);
  		Assert.notNull(filePattern);
  
  		logger.info("Starting File List Comparison");
  		logger.info("Original files dir: " + originalFilesBaseDir);
  		logger.info("New files dir: " + LocationUtils.getCanonicalPath(new File(newFilesBaseDir)));
  		logger.info("File pattern: " + filePattern);
  		logger.info("Property names: " + propertyNames);
  
  		List<String> filePatterns = CollectionUtils.getTrimmedListFromCSV(filePattern);
  		String[] includesArray = filePatterns.toArray(new String[filePatterns.size()]);
  
  		SimpleScanner scanner = new SimpleScanner();
  		scanner.setBasedir(newFilesBaseDir);
  		scanner.setIncludes(includesArray);
  
  		List<String> newLocations = LocationUtils.getAbsolutePaths(scanner.getFiles());
  		List<String> newFileNames = LocationUtils.getFilenames(newLocations);
  
  		scanner = new SimpleScanner();
  		scanner.setBasedir(originalFilesBaseDir);
  		scanner.setIncludes(includesArray);
  
  		List<String> originalLocations = LocationUtils.getAbsolutePaths(scanner.getFiles());
  		List<String> originalFileNames = LocationUtils.getFilenames(originalLocations);
  
  		ComparisonResults comparison = LocationUtils.getLocationListComparison(newFileNames, originalFileNames);
  
  		logger.info("Added {} files.", comparison.getAdded().size());
  		logger.info("Updated {} existing files.", comparison.getSame().size());
  		logger.info("Deleted {} files.", comparison.getDeleted().size());
  
  		PropertyUtils.addListComparisonProperties(mavenProperties, comparison, propertyNames);
  	}
  
  	public String getFilePattern() {
  		return filePattern;
  	}
  
  	public void setFilePattern(String filePattern) {
  		this.filePattern = filePattern;
  	}
  
  	public Properties getMavenProperties() {
  		return mavenProperties;
  	}
  
  	public void setMavenProperties(Properties mavenProperties) {
 		this.mavenProperties = mavenProperties;
 	}
 
 	public String getNewFilesBaseDir() {
 		return newFilesBaseDir;
 	}
 
 	public void setNewFilesBaseDir(String newFilesBaseDir) {
 		this.newFilesBaseDir = newFilesBaseDir;
 	}
 
 	public String getOriginalFilesBaseDir() {
 		return originalFilesBaseDir;
 	}
 
 	public void setOriginalFilesBaseDir(String originalFilesBaseDir) {
 		this.originalFilesBaseDir = originalFilesBaseDir;
 	}
 
 	public List<String> getPropertyNames() {
 		return propertyNames;
 	}
 
 	public void setPropertyNames(List<String> propertyNames) {
 		this.propertyNames = propertyNames;
 	}
 }