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/*
* Copyright (C) 2014 Open Whisper Systems
*
* This program 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 3 of the License, or
* (at your option) any later version.
*
* 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 General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.thoughtcrime.securesms.util;
import android.content.Context;
import android.os.Build;
import android.support.annotation.NonNull;
import android.text.format.DateFormat;
import org.thoughtcrime.securesms.R;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import java.util.concurrent.TimeUnit;
/**
* Utility methods to help display dates in a nice, easily readable way.
*/
public class DateUtils extends android.text.format.DateUtils {
@SuppressWarnings("unused")
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private static final String TAG = DateUtils.class.getSimpleName();
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private static final SimpleDateFormat DATE_FORMAT = new SimpleDateFormat("yyyyMMdd");
private static boolean isWithin(final long millis, final long span, final TimeUnit unit) {
return System.currentTimeMillis() - millis <= unit.toMillis(span);
}
private static boolean isYesterday(final long when) {
return DateUtils.isToday(when + TimeUnit.DAYS.toMillis(1));
}
private static int convertDelta(final long millis, TimeUnit to) {
return (int) to.convert(System.currentTimeMillis() - millis, TimeUnit.MILLISECONDS);
}
private static String getFormattedDateTime(long time, String template, Locale locale) {
final String localizedPattern = getLocalizedPattern(template, locale);
return new SimpleDateFormat(localizedPattern, locale).format(new Date(time));
}
public static String getBriefRelativeTimeSpanString(final Context c, final Locale locale, final long timestamp) {
if (isWithin(timestamp, 1, TimeUnit.MINUTES)) {
return c.getString(R.string.DateUtils_just_now);
} else if (isWithin(timestamp, 1, TimeUnit.HOURS)) {
int mins = convertDelta(timestamp, TimeUnit.MINUTES);
return c.getResources().getString(R.string.DateUtils_minutes_ago, mins);
} else if (isWithin(timestamp, 1, TimeUnit.DAYS)) {
int hours = convertDelta(timestamp, TimeUnit.HOURS);
return c.getResources().getQuantityString(R.plurals.hours_ago, hours, hours);
} else if (isWithin(timestamp, 6, TimeUnit.DAYS)) {
return getFormattedDateTime(timestamp, "EEE", locale);
} else if (isWithin(timestamp, 365, TimeUnit.DAYS)) {
return getFormattedDateTime(timestamp, "MMM d", locale);
} else {
return getFormattedDateTime(timestamp, "MMM d, yyyy", locale);
}
}
public static String getExtendedRelativeTimeSpanString(final Context c, final Locale locale, final long timestamp) {
if (isWithin(timestamp, 1, TimeUnit.MINUTES)) {
return c.getString(R.string.DateUtils_just_now);
} else if (isWithin(timestamp, 1, TimeUnit.HOURS)) {
int mins = (int)TimeUnit.MINUTES.convert(System.currentTimeMillis() - timestamp, TimeUnit.MILLISECONDS);
return c.getResources().getString(R.string.DateUtils_minutes_ago, mins);
} else {
StringBuilder format = new StringBuilder();
if (isWithin(timestamp, 6, TimeUnit.DAYS)) format.append("EEE ");
else if (isWithin(timestamp, 365, TimeUnit.DAYS)) format.append("MMM d, ");
else format.append("MMM d, yyyy, ");
if (DateFormat.is24HourFormat(c)) format.append("HH:mm");
else format.append("hh:mm a");
return getFormattedDateTime(timestamp, format.toString(), locale);
}
}
public static String getDayPrecisionTimeSpanString(Context context, Locale locale, long timestamp) {
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyyMMdd");
if (simpleDateFormat.format(System.currentTimeMillis()).equals(simpleDateFormat.format(timestamp))) {
return context.getString(R.string.DeviceListItem_today);
} else {
String format;
if (isWithin(timestamp, 6, TimeUnit.DAYS)) format = "EEE ";
else if (isWithin(timestamp, 365, TimeUnit.DAYS)) format = "MMM d";
else format = "MMM d, yyy";
return getFormattedDateTime(timestamp, format, locale);
}
}
public static SimpleDateFormat getDetailedDateFormatter(Context context, Locale locale) {
String dateFormatPattern;
if (DateFormat.is24HourFormat(context)) {
dateFormatPattern = getLocalizedPattern("MMM d, yyyy HH:mm:ss zzz", locale);
} else {
dateFormatPattern = getLocalizedPattern("MMM d, yyyy hh:mm:ss a zzz", locale);
}
return new SimpleDateFormat(dateFormatPattern, locale);
}
public static String getRelativeDate(@NonNull Context context,
@NonNull Locale locale,
long timestamp)
{
if (isToday(timestamp)) {
return context.getString(R.string.DateUtils_today);
} else if (isYesterday(timestamp)) {
return context.getString(R.string.DateUtils_yesterday);
} else {
return getFormattedDateTime(timestamp, "EEE, MMM d, yyyy", locale);
}
}
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public static boolean isSameDay(long t1, long t2) {
return DATE_FORMAT.format(new Date(t1)).equals(DATE_FORMAT.format(new Date(t2)));
}
public static boolean isSameExtendedRelativeTimestamp(@NonNull Context context, @NonNull Locale locale, long t1, long t2) {
return getExtendedRelativeTimeSpanString(context, locale, t1).equals(getExtendedRelativeTimeSpanString(context, locale, t2));
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}
private static String getLocalizedPattern(String template, Locale locale) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
return DateFormat.getBestDateTimePattern(locale, template);
} else {
return new SimpleDateFormat(template, locale).toLocalizedPattern();
}
}
}