/*
 *    Copyright 2005-2007 The Regents of the University of Michigan
 *
 * 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.
 */
package org.tranche.example;

import java.io.ByteArrayInputStream;
import java.io.File;
import org.tranche.hash.BigHash;
import org.tranche.get.GetFileTool;
import org.tranche.util.IOUtil;
import org.tranche.project.file.ProjectFile;
import org.tranche.project.file.part.ProjectFilePart;
import org.tranche.project.file.ProjectFileUtil;
import org.tranche.util.TempFileUtil;

/**
 * This is an example snippet of code that shows the contents of a project file.
 *
 * @author Jayson Falkner - jfalkner@umich.edu
 */
public class ShowProjectFile {
    public static void main(String[] args) throws Exception {
        // the hash to download
        BigHash hash = BigHash.createHashFromString("mGNNW+dCIIk0hEqUFOgM4QBi15TYjGX3I1I6V7uo9JDKHJu8Ks8kx+hwKhumqFu6XXjCy1D7IqP3/hZjLnqW0MbR2YsAAAAAABdZew==");
        
        // use the GetFileTool to download the project file
        GetFileTool gft = new GetFileTool();
        gft.setHash(hash);
        gft.setValidate(false);
        // save the contents to a temporary file
        File temp = TempFileUtil.createTemporaryFile();
        temp.deleteOnExit();
        // get the file
        gft.getFile(temp);
        
        // convert the bytes to an object
        ProjectFile pf = ProjectFileUtil.read(new ByteArrayInputStream(IOUtil.getBytes(temp)));
        
        // display the info
        System.out.println("\n*** Project File Information ***");
        System.out.println("Tranche Hash: "+hash);
        System.out.println("Name: "+pf.getName());
        System.out.println("Description: "+pf.getDescription());
        System.out.println("Size of files: "+pf.getSize());
        System.out.println("Number of files: "+pf.getParts().size());
        System.out.println("*** Files in this project (hash/name pairs) ***");
        for (ProjectFilePart pfp : pf.getParts()) {
            System.out.println(pfp.getRelativeName() + ", size: "+pfp.getHash().getLength());
            System.out.println("  Tranche Hash: "+pfp.getHash());
        }
    }
}