TimeUtils.java

/**
 * This file is part of FileSpace for Android, an app for managing your server (files, talks...).
 * <p/>
 * Copyright (c) 2014-2015 FileSpace for Android contributors (http://mercandalli.com)
 * <p/>
 * LICENSE:
 * <p/>
 * FileSpace for Android is free software: you can redistribute it and/or modify it under the terms of the GNU General
 * Public License as published by the Free Software Foundation, either version 2 of the License, or (at your option) any
 * later version.
 * <p/>
 * FileSpace for Android 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.
 *
 * @author Jonathan Mercandalli
 * @license http://www.gnu.org/licenses/gpl.html
 * @copyright 2014-2015 FileSpace for Android contributors (http://mercandalli.com)
 */
package com.mercandalli.android.apps.files.common.util;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import java.util.TimeZone;

/**
 * The time util.
 */
public class TimeUtils {
    private static final int SECOND = 1000;
    private static final int MINUTE = 60 * SECOND;
    private static final int HOUR = 60 * MINUTE;
    private static final int DAY = 24 * HOUR;

    public static String printDifferenceFuture(Date endDate, Date startDate) {
        //milliseconds
        long different = endDate.getTime() - startDate.getTime();

        if (different < 0) {
            return "Finished";
        }

        long elapsedDays = different / DAY;
        different = different % DAY;

        long elapsedHours = different / HOUR;
        different = different % HOUR;

        long elapsedMinutes = different / MINUTE;
        different = different % MINUTE;

        long elapsedSeconds = different / SECOND;

        return
                (elapsedDays != 0 ? (elapsedDays + "d ") : "") +
                        (elapsedHours != 0 ? ((elapsedHours < 10 && elapsedDays != 0) ? "0" + elapsedHours + "h " : elapsedHours + "h ") : "") +
                        (elapsedMinutes != 0 ? ((elapsedMinutes < 10 && (elapsedDays != 0 || elapsedHours != 0)) ? "0" + elapsedMinutes + "m " : elapsedMinutes + "m ") : "") +
                        (elapsedSeconds != 0 ? ((elapsedSeconds < 10 && (elapsedDays != 0 || elapsedHours != 0 || elapsedMinutes != 0)) ? "0" + elapsedSeconds + "s " : elapsedSeconds + "s ") : "");
    }

    public static String printDifferencePast(Date endDate, Date startDate) {
        //milliseconds
        long different = startDate.getTime() - endDate.getTime();

        if (different < 0) {
            return "Future";
        }

        long elapsedDays = different / DAY;
        different = different % DAY;

        long elapsedHours = different / HOUR;
        different = different % HOUR;

        long elapsedMinutes = different / MINUTE;
        different = different % MINUTE;

        long elapsedSeconds = different / SECOND;

        return
                (elapsedDays != 0 ? (elapsedDays + "d ") : "") +
                        (elapsedHours != 0 ? ((elapsedHours < 10 && elapsedDays != 0) ? "0" + elapsedHours + "h " : elapsedHours + "h ") : "") +
                        (elapsedMinutes != 0 ? ((elapsedMinutes < 10 && (elapsedDays != 0 || elapsedHours != 0)) ? "0" + elapsedMinutes + "m " : elapsedMinutes + "m ") : "") +
                        (elapsedSeconds != 0 ? ((elapsedSeconds < 10 && (elapsedDays != 0 || elapsedHours != 0 || elapsedMinutes != 0)) ? "0" + elapsedSeconds + "s " : elapsedSeconds + "s ") : "");
    }

    public static String getCurrentDate() {
        SimpleDateFormat dateFormatGmt = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.US);
        dateFormatGmt.setTimeZone(TimeZone.getTimeZone("UTC"));
        return dateFormatGmt.format(new Date());
    }

    public static String getGMTDate(long time) {
        SimpleDateFormat dateFormatGmt = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.US);
        dateFormatGmt.setTimeZone(TimeZone.getTimeZone("UTC"));
        return dateFormatGmt.format(new Date(time));
    }

    public static String getDate(final Date date) {
        if (date == null) {
            return null;
        }
        final SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.US);
        return dateFormat.format(date);
    }

}