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/*
* Copyright (C) 2015 The CyanogenMod 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.cyanogenmod.filemanager.providers.secure;
import android.app.AlarmManager;
import android.app.IntentService;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import com.cyanogenmod.filemanager.model.FileSystemObject;
import com.cyanogenmod.filemanager.util.FileHelper;
import java.io.File;
import java.util.Calendar;
import java.util.Date;
/**
* SecureCacheCleanupService
* <pre>
* Service that cleans up cache
* </pre>
*
* @see {@link android.app.IntentService}
*/
public class SecureCacheCleanupService extends IntentService {
// Constants
private static final String ACTION_START = "com.cyanogenmod.filemanager.ACTION_START_CLEANUP";
private static final String NAME = "cleanup-service";
/**
* Creates an IntentService. Invoked by your subclass's constructor.
*/
public SecureCacheCleanupService() {
super(NAME);
}
@Override
protected void onHandleIntent(Intent intent) {
String action = intent.getAction();
if (Intent.ACTION_BOOT_COMPLETED.equals(action)) {
scheduleCleanup(this);
} else if (ACTION_START.equals(action)) {
cleanupOperation();
}
}
private void cleanupOperation() {
File cacheDir = new File(getExternalCacheDir(), SecureChoiceClickListener.CACHE_DIR);
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.add(Calendar.HOUR, -1);
Date cutoff = calendar.getTime();
if (!cacheDir.exists()) {
return;
}
// Get list of files
File[] files = cacheDir.listFiles();
if (files == null) {
return;
}
// Delete all, won't run if list is empty
for (File file : files) {
FileSystemObject fso = FileHelper.createFileSystemObject(file);
Date lastAccessDate = fso.getLastAccessedTime();
if (lastAccessDate.before(cutoff)) {
file.delete();
}
}
// Check again after deletion
files = cacheDir.listFiles();
// If no files, cancel alarm
if (files == null || files.length < 1) {
cancelAlarm(this);
}
}
/**
* Schedule a cleanup alarm
*
* @param context {@link android.content.Context}
*
* @throws IllegalArgumentException {@link java.lang.IllegalArgumentException}
*/
public static void scheduleCleanup(Context context) throws IllegalArgumentException {
if (context == null) {
throw new IllegalArgumentException("'context' cannot be null!");
}
AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(context, SecureCacheCleanupService.class);
intent.setAction(ACTION_START);
PendingIntent pendingIntent = PendingIntent.getService(context, 0, intent, 0);
alarmManager.setInexactRepeating(AlarmManager.ELAPSED_REALTIME, 1000,
AlarmManager.INTERVAL_HOUR, pendingIntent);
}
/**
* Cancel a cleanup alarm
*
* @param context {@link android.content.Context}
*
* @throws IllegalArgumentException {@link java.lang.IllegalArgumentException}
*/
public static void cancelAlarm(Context context) throws IllegalArgumentException {
if (context == null) {
throw new IllegalArgumentException("'context' cannot be null!");
}
AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(context, SecureCacheCleanupService.class);
intent.setAction(ACTION_START);
PendingIntent pendingIntent = PendingIntent.getService(context, 0, intent, 0);
alarmManager.cancel(pendingIntent);
}
}
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