package org.greenstone.gatherer.file;

import java.io.File;
import javax.swing.filechooser.FileSystemView;
import org.greenstone.gatherer.Dictionary;
import org.greenstone.gatherer.file.FileNode;
import org.greenstone.gatherer.util.ArrayTools;


public class FileSystem
{
    static public FileNode getLocalFileSystem(FileSystemModel model)
    // static public FileNode getLocalFileSystem()
    {
	FileNode file_system_root = null;

	// Get all the available roots mounted on the filesystem
	File[] roots = File.listRoots();
	if (roots == null) {
	    return null;
	}

	// If there is just one root use it as the tree root (Linux)
	if (roots.length == 1) {
	    file_system_root = new FileNode(roots[0], Dictionary.get("Tree.Root"));
	}

	// Otherwise build a dummy node which has the roots as children
	else {
	    file_system_root = new FileNode(Dictionary.get("Tree.Root"));
	    file_system_root.setModel(model);

	    // Sort the roots into alphabetical order
	    ArrayTools.sort(roots);
	    for (int i = 0; i < roots.length; i++) {
		// Only add root if it isn't a floppy drive
		if (!FileSystemView.getFileSystemView().isFloppyDrive(roots[i])) {
		    file_system_root.insert(new FileNode(roots[i]));
		}
	    }
	}

	return file_system_root;
    }


    static public FileNode getUserHomeMapping()
    {
	// Generate a special mapping to the user home folder
 	String home_folder_str = System.getProperty("user.home");
	if (home_folder_str == null || home_folder_str.length() == 0) {
	    return null;
	}

	File home_folder = new File(home_folder_str);
	String[] args = new String[1];
	args[0] = home_folder.getName();
	return new FileNode(home_folder, Dictionary.get("Tree.Home", args));
    }
}