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etesync-android/app/src/main/java/at/bitfire/davdroid/DavService.java
2017-02-22 14:06:24 +00:00

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/*
* Copyright © 2013 2016 Ricki Hirner (bitfire web engineering).
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the GNU Public License v3.0
* which accompanies this distribution, and is available at
* http://www.gnu.org/licenses/gpl.html
*/
package at.bitfire.davdroid;
import android.accounts.Account;
import android.accounts.AccountManager;
import android.annotation.SuppressLint;
import android.app.Service;
import android.content.Intent;
import android.database.DatabaseUtils;
import android.database.sqlite.SQLiteDatabase;
import android.os.Binder;
import android.os.IBinder;
import android.support.annotation.NonNull;
import android.text.TextUtils;
import java.lang.ref.WeakReference;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Set;
import at.bitfire.davdroid.model.ServiceDB.OpenHelper;
import at.bitfire.davdroid.model.ServiceDB.Services;
public class DavService extends Service {
public static final String
ACTION_ACCOUNTS_UPDATED = "accountsUpdated",
EXTRA_DAV_SERVICE_ID = "davServiceID";
private final IBinder binder = new InfoBinder();
private final Set<Long> runningRefresh = new HashSet<>();
private final List<WeakReference<RefreshingStatusListener>> refreshingStatusListeners = new LinkedList<>();
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
if (intent != null) {
String action = intent.getAction();
long id = intent.getLongExtra(EXTRA_DAV_SERVICE_ID, -1);
switch (action) {
case ACTION_ACCOUNTS_UPDATED:
cleanupAccounts();
break;
}
}
return START_NOT_STICKY;
}
/* BOUND SERVICE PART
for communicating with the activities
*/
@Override
public IBinder onBind(Intent intent) {
return binder;
}
public interface RefreshingStatusListener {
void onDavRefreshStatusChanged(long id, boolean refreshing);
}
public class InfoBinder extends Binder {
public boolean isRefreshing(long id) {
return runningRefresh.contains(id);
}
public void addRefreshingStatusListener(@NonNull RefreshingStatusListener listener, boolean callImmediate) {
refreshingStatusListeners.add(new WeakReference<>(listener));
if (callImmediate)
for (long id : runningRefresh)
listener.onDavRefreshStatusChanged(id, true);
}
public void removeRefreshingStatusListener(@NonNull RefreshingStatusListener listener) {
for (Iterator<WeakReference<RefreshingStatusListener>> iterator = refreshingStatusListeners.iterator(); iterator.hasNext(); ) {
RefreshingStatusListener item = iterator.next().get();
if (listener.equals(item))
iterator.remove();
}
}
}
/* ACTION RUNNABLES
which actually do the work
*/
@SuppressLint("MissingPermission")
void cleanupAccounts() {
App.log.info("Cleaning up orphaned accounts");
final OpenHelper dbHelper = new OpenHelper(this);
try {
SQLiteDatabase db = dbHelper.getWritableDatabase();
List<String> sqlAccountNames = new LinkedList<>();
AccountManager am = AccountManager.get(this);
for (Account account : am.getAccountsByType(Constants.ACCOUNT_TYPE))
sqlAccountNames.add(DatabaseUtils.sqlEscapeString(account.name));
if (sqlAccountNames.isEmpty())
db.delete(Services._TABLE, null, null);
else
db.delete(Services._TABLE, Services.ACCOUNT_NAME + " NOT IN (" + TextUtils.join(",", sqlAccountNames) + ")", null);
} finally {
dbHelper.close();
}
}
}