/*
 * Funambol is a mobile platform developed by Funambol, Inc. 
 * Copyright (C) 2011 Funambol, Inc.
 * 
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Affero General Public License version 3 as published by
 * the Free Software Foundation with the addition of the following permission 
 * added to Section 15 as permitted in Section 7(a): FOR ANY PART OF THE COVERED
 * WORK IN WHICH THE COPYRIGHT IS OWNED BY FUNAMBOL, FUNAMBOL DISCLAIMS THE 
 * WARRANTY OF NON INFRINGEMENT  OF THIRD PARTY RIGHTS.
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU Affero General Public License 
 * along with this program; if not, see http://www.gnu.org/licenses or write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301 USA.
 * 
 * You can contact Funambol, Inc. headquarters at 643 Bair Island Road, Suite 
 * 305, Redwood City, CA 94063, USA, or at email address info@funambol.com.
 * 
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License version 3.
 * 
 * In accordance with Section 7(b) of the GNU Affero General Public License
 * version 3, these Appropriate Legal Notices must retain the display of the
 * "Powered by Funambol" logo. If the display of the logo is not reasonably 
 * feasible for technical reasons, the Appropriate Legal Notices must display
 * the words "Powered by Funambol". 
 */

package com.funambol.platform;

import android.os.StatFs;

import com.funambol.util.Log;

/**
 * Provides informations about the File System of this specific platform
 */
public class FileSystemInfo {

    private static final String TAG_LOG = "FileSystemInfo";

    private StatFs stats;
    
    public FileSystemInfo(String path) {
        stats = new StatFs(path);
    }

    public int getBlockSize() {
        return stats.getBlockSize();
    }

    public long getAvailableBlocks() {
        return stats.getAvailableBlocks();
    }

    public long getTotalUsableBlocks() {
        long totalBlocks = stats.getBlockCount();
        long unusableBlocks = stats.getFreeBlocks() - getAvailableBlocks();
        return totalBlocks - unusableBlocks;
    }

    /**
     * Returns the sd card root folder
     */
    public static String getSDCardRoot() {
        try {
            return android.os.Environment.getExternalStorageDirectory().toString();
        } catch (Throwable t) {
            Log.error(TAG_LOG, "Failed to retrieve sd card root", t);
            return null;
        }
    }

    /**
     * Returns whether the sd card is available
     */
    public static boolean isSDCardAvailable() {
        return android.os.Environment.getExternalStorageState().equals(
            android.os.Environment.MEDIA_MOUNTED);
    }
}