/*******************************************************************************
 * Copyright (c) 2011 Ziver Koc
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 ******************************************************************************/
package zutil.net.update;

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

import zutil.io.file.FileUtil;

/**
 * This class is used to store the files
 * and there hashes
 * 
 * @author Ziver
 */
class FileListMessage implements Serializable{
	private static final long serialVersionUID = 1L;

	private ArrayList<FileInfo> fileList;
	private long totalSize;

	private FileListMessage(){}
	
	/**
	 * Returns a ArrayList of FileInfo object for all the files in the specified folder
	 * 
	 * @param 		path		is the path to scan
	 **/
	public FileListMessage(String path) throws IOException{
		fileList = new ArrayList<FileInfo>();

		List<File> files = FileUtil.search(FileUtil.find(path));
		long totalSize = 0;
		for(File file : files){
			FileInfo fileInfo = new FileInfo(path, file);
			fileList.add( fileInfo );
			totalSize += fileInfo.getSize();
		}
		this.totalSize = totalSize;
	}


	public long getTotalSize() {
		return totalSize;
	}
	
	public ArrayList<FileInfo> getFileList(){
		return fileList;
	}
	
	/**
	 * Compares the files and returns the files that differ from this file list
	 * 
	 * @param 		comp		is the file list to compare with
	 * @return
	 */
	public FileListMessage getDiff( FileListMessage comp){
		FileListMessage diff = new FileListMessage();

		long diffSize = 0;
		diff.fileList = new ArrayList<FileInfo>();
		for(FileInfo file : this.fileList){
			if( !comp.fileList.contains( file)){
				diff.fileList.add( file );
				diffSize += file.getSize();
			}
		}
		diff.totalSize = diffSize;
		
		return diff;
	}


	public boolean equals(Object comp){
		if(comp instanceof FileListMessage){
			FileListMessage tmp = (FileListMessage)comp;
			return fileList.equals(tmp.fileList) && totalSize == tmp.totalSize;
		}
		return false;
	}
}