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package part1;

import java.io.File;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author matt
 */
public class DirectoryHasher implements Runnable {
    private File inDir;
    private File outDir;

    public DirectoryHasher(File inDir, File outDir) {
        this.inDir = inDir;
        this.outDir = outDir;
    }

    public DirectoryHasher(String inDir, String outDir) {
        this(new File(inDir), new File(outDir));
    }

    @Override
    public void run() {
        try {
            // create output directory if doesn't already exist
            if (!outDir.exists()) {
                if (!outDir.mkdirs() && !outDir.exists()) {
                    throw new IOException("Couldn't create directory `" + outDir.getAbsolutePath() + "`");
                }
            }
            // first, we need to iterate through the files in the current directory
            File[] files = inDir.listFiles();
            if (files != null) {
                for (File f : files) {
                    if (f.isFile()) {
                        FileHasher fh = new FileHasher(f, outDir);
                        new Thread(fh).start();
                    } else if (f.isDirectory()) {
                        // recursively call this method
                        File nextOutDir = new File(outDir.getAbsolutePath() +
                                File.separator + f.getName());
                        DirectoryHasher dh = new DirectoryHasher(f, nextOutDir);
                        new Thread(dh).start();
                    }
                }
            }
        } catch (IOException ex) {
            Logger.getLogger(DirectoryChecker.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

}