/*
 * File: Metrics.java
 * Author: David Green <dgreen@uab.edu>
 * Vers: 1.0.0 10/21/2010 dgg - initial coding
 */

import java.io.File;

/**
 *
 * @author David Green <dgreen@uab.edu>
 */
public class Metrics {
    private int topLevelFolderCount;
    private int topLevelFileCount;
    private int totalFolderCount;
    private int totalFileCount;
    private File directory;

    private Metrics() {

    }

    public static Metrics computeDirectoryMetrics(File directory) {
        Metrics metrics = new Metrics();
        metrics.setDirectory(directory);

        File aFile;

        File [] files = directory.listFiles();

        for ( int i = 0; i < files.length; i++) {
            aFile = files[i];
            System.out.println("Now processing " + aFile.getName());
            if ( aFile.isDirectory() ) {
                metrics.countTopLevelFolder();
                Metrics subMetrics = computeDirectoryMetrics(aFile);
                metrics.merge(subMetrics);
            }
            else {
                metrics.countTopLevelFile();
            }
        }
        return metrics;
    }

    public File getDirectory() {
        return directory;
    }

    public void setDirectory(File directory) {
        this.directory = directory;
    }

    public int getTopLevelFileCount() {
        return topLevelFileCount;
    }

    /**
     * increment the top level and total file counts
     */
    public void countTopLevelFile() {
        topLevelFileCount++;
        totalFileCount++;
    }

    public int getTopLevelFolderCount() {
        return topLevelFolderCount;
    }


    /**
     * Increment the topLevel and total folder counts
     */
    public void countTopLevelFolder() {
        topLevelFolderCount++;
        totalFolderCount++;
    }

    public int getTotalFileCount() {
        return totalFileCount;
    }

    public int getTotalFolderCount() {
        return totalFolderCount;
    }

    /**
     * merge the totals from moreMetrics in with the metrics of the totals
     * of this metric object.
     *
     * @param moreMetrics
     */
    public void merge(Metrics moreMetrics ) {
        this.totalFileCount += moreMetrics.getTotalFileCount();
        this.totalFolderCount += moreMetrics.getTotalFolderCount();
    }

}