1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License
15 */
16
17package com.android.deskclock;
18
19import android.content.Context;
20import android.support.annotation.VisibleForTesting;
21import android.support.design.widget.Snackbar;
22import android.text.format.DateFormat;
23import android.text.format.DateUtils;
24import android.view.View;
25import android.widget.Toast;
26
27import com.android.deskclock.provider.AlarmInstance;
28import com.android.deskclock.widget.toast.SnackbarManager;
29import com.android.deskclock.widget.toast.ToastManager;
30
31import java.util.Calendar;
32import java.util.Locale;
33
34/**
35 * Static utility methods for Alarms.
36 */
37public class AlarmUtils {
38
39    public static String getFormattedTime(Context context, Calendar time) {
40        final String skeleton = DateFormat.is24HourFormat(context) ? "EHm" : "Ehma";
41        final String pattern = DateFormat.getBestDateTimePattern(Locale.getDefault(), skeleton);
42        return (String) DateFormat.format(pattern, time);
43    }
44
45    public static String getAlarmText(Context context, AlarmInstance instance,
46            boolean includeLabel) {
47        String alarmTimeStr = getFormattedTime(context, instance.getAlarmTime());
48        return (instance.mLabel.isEmpty() || !includeLabel)
49                ? alarmTimeStr
50                : alarmTimeStr + " - " + instance.mLabel;
51    }
52
53    /**
54     * format "Alarm set for 2 days, 7 hours, and 53 minutes from now."
55     */
56    @VisibleForTesting
57    static String formatElapsedTimeUntilAlarm(Context context, long delta) {
58        // If the alarm will ring within 60 seconds, just report "less than a minute."
59        final String[] formats = context.getResources().getStringArray(R.array.alarm_set);
60        if (delta < DateUtils.MINUTE_IN_MILLIS) {
61            return formats[0];
62        }
63
64        // Otherwise, format the remaining time until the alarm rings.
65
66        // Round delta upwards to the nearest whole minute. (e.g. 7m 58s -> 8m)
67        final long remainder = delta % DateUtils.MINUTE_IN_MILLIS;
68        delta += remainder == 0 ? 0 : (DateUtils.MINUTE_IN_MILLIS - remainder);
69
70        int hours = (int) delta / (1000 * 60 * 60);
71        final int minutes = (int) delta / (1000 * 60) % 60;
72        final int days = hours / 24;
73        hours = hours % 24;
74
75        String daySeq = Utils.getNumberFormattedQuantityString(context, R.plurals.days, days);
76        String minSeq = Utils.getNumberFormattedQuantityString(context, R.plurals.minutes, minutes);
77        String hourSeq = Utils.getNumberFormattedQuantityString(context, R.plurals.hours, hours);
78
79        final boolean showDays = days > 0;
80        final boolean showHours = hours > 0;
81        final boolean showMinutes = minutes > 0;
82
83        // Compute the index of the most appropriate time format based on the time delta.
84        final int index = (showDays ? 1 : 0) | (showHours ? 2 : 0) | (showMinutes ? 4 : 0);
85
86        return String.format(formats[index], daySeq, hourSeq, minSeq);
87    }
88
89    public static void popAlarmSetToast(Context context, long alarmTime) {
90        final long alarmTimeDelta = alarmTime - System.currentTimeMillis();
91        final String text = formatElapsedTimeUntilAlarm(context, alarmTimeDelta);
92        Toast toast = Toast.makeText(context, text, Toast.LENGTH_LONG);
93        ToastManager.setToast(toast);
94        toast.show();
95    }
96
97    public static void popAlarmSetSnackbar(View snackbarAnchor, long alarmTime) {
98        final long alarmTimeDelta = alarmTime - System.currentTimeMillis();
99        final String text = formatElapsedTimeUntilAlarm(
100                snackbarAnchor.getContext(), alarmTimeDelta);
101        SnackbarManager.show(Snackbar.make(snackbarAnchor, text, Snackbar.LENGTH_SHORT));
102        snackbarAnchor.announceForAccessibility(text);
103    }
104}
105