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/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.wallpaper.module;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import java.util.Calendar;
import java.util.concurrent.TimeUnit;
/**
* Schedules and cancels alarms on Android's {@link AlarmManager} to occur every 24 hours to perform
* daily logging.
*/
public class DailyLoggingAlarmScheduler {
private static final int UNUSED_REQUEST_CODE = 0;
private static final int UNUSED_REQUEST_FLAGS = 0;
/**
* Sets a new alarm to fire approximately 24 hours after the last one, or immediately if it has
* not fired in over 24 hours.
*/
public static void setAlarm(Context appContext) {
Injector injector = InjectorProvider.getInjector();
AlarmManagerWrapper alarmManagerWrapper = injector.getAlarmManagerWrapper(appContext);
WallpaperPreferences preferences = injector.getPreferences(appContext);
long lastTimestamp = preferences.getLastDailyLogTimestamp();
Calendar oneDayAgo = Calendar.getInstance();
long currentTimeMillis = System.currentTimeMillis();
oneDayAgo.setTimeInMillis(currentTimeMillis);
oneDayAgo.add(Calendar.DAY_OF_YEAR, -1);
long triggerAtMillis;
if (lastTimestamp == -1 || lastTimestamp < oneDayAgo.getTimeInMillis()) {
// Schedule for right now (a minute from now, to ensure the trigger time is in the future) and
// then every ~24 hours later.
Calendar oneMinuteFromNow = Calendar.getInstance();
oneMinuteFromNow.setTimeInMillis(currentTimeMillis);
oneMinuteFromNow.add(Calendar.MINUTE, 1);
triggerAtMillis = oneMinuteFromNow.getTimeInMillis();
} else {
// Schedule for 24 hours after the last daily log, and every ~24 hours after that.
Calendar oneDayFromNow = Calendar.getInstance();
oneDayFromNow.setTimeInMillis(lastTimestamp);
oneDayFromNow.add(Calendar.DAY_OF_YEAR, 1);
triggerAtMillis = oneDayFromNow.getTimeInMillis();
}
// Cancel any existing daily logging alarms. Then do the actual scheduling of the new alarm.
PendingIntent pendingIntent = createAlarmReceiverPendingIntent(appContext);
alarmManagerWrapper.cancel(pendingIntent);
pendingIntent = createAlarmReceiverPendingIntent(appContext);
alarmManagerWrapper.setInexactRepeating(
AlarmManager.RTC /* type */,
triggerAtMillis /* triggerAtMillis */,
TimeUnit.MILLISECONDS.convert(24, TimeUnit.HOURS) /* intervalMillis */,
pendingIntent /* operation */);
}
private static PendingIntent createAlarmReceiverPendingIntent(Context appContext) {
Intent intent = new Intent(appContext, DailyLoggingAlarmReceiver.class);
return PendingIntent.getBroadcast(
appContext, UNUSED_REQUEST_CODE, intent, UNUSED_REQUEST_FLAGS);
}
}
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