TimeframeUtils.java

 1/*
 2 * Copyright (c) 2018, Daniel Gultsch All rights reserved.
 3 *
 4 * Redistribution and use in source and binary forms, with or without modification,
 5 * are permitted provided that the following conditions are met:
 6 *
 7 * 1. Redistributions of source code must retain the above copyright notice, this
 8 * list of conditions and the following disclaimer.
 9 *
10 * 2. Redistributions in binary form must reproduce the above copyright notice,
11 * this list of conditions and the following disclaimer in the documentation and/or
12 * other materials provided with the distribution.
13 *
14 * 3. Neither the name of the copyright holder nor the names of its contributors
15 * may be used to endorse or promote products derived from this software without
16 * specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
22 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
25 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
27 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30package eu.siacs.conversations.utils;
31
32import android.content.Context;
33import android.support.annotation.PluralsRes;
34
35import eu.siacs.conversations.R;
36
37public class TimeframeUtils {
38
39	private static final Timeframe[] TIMEFRAMES;
40
41	static {
42		TIMEFRAMES = new Timeframe[]{
43				new Timeframe(1000L, R.plurals.seconds),
44				new Timeframe(60L * 1000, R.plurals.minutes),
45				new Timeframe(60L * 60 * 1000, R.plurals.hours),
46				new Timeframe(24L * 60 * 60 * 1000, R.plurals.days),
47				new Timeframe(7L * 24 * 60 * 60 * 1000, R.plurals.weeks),
48				new Timeframe(30L * 24 * 60 * 60 * 1000, R.plurals.months),
49		};
50	}
51
52	public static String resolve(Context context, long timeframe) {
53		for(int i = TIMEFRAMES.length -1 ; i >= 0; --i) {
54			long duration = TIMEFRAMES[i].duration;
55			long threshold = i > 0 ? (TIMEFRAMES[i-1].duration / 2) : 0;
56			if (timeframe >= duration - threshold) {
57				int count = (int) (timeframe / duration + ((timeframe%duration)>(duration/2)?1:0));
58				return context.getResources().getQuantityString(TIMEFRAMES[i].name,count,count);
59			}
60		}
61		return context.getResources().getQuantityString(TIMEFRAMES[0].name,0,0);
62	}
63
64
65	private static class Timeframe {
66		public final long duration;
67		public final int name;
68
69		private Timeframe(long duration, @PluralsRes int name) {
70			this.duration = duration;
71			this.name = name;
72		}
73	}
74
75}