Java tutorial
/* * Copyright 2010-2013 Eric Kok et al. * * Transdroid is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * Transdroid is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with Transdroid. If not, see <http://www.gnu.org/licenses/>. */ package org.transdroid.core.service; import java.util.ArrayList; import java.util.List; import org.androidannotations.annotations.Bean; import org.androidannotations.annotations.EService; import org.androidannotations.annotations.SystemService; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; import org.transdroid.R; import org.transdroid.core.app.settings.ApplicationSettings; import org.transdroid.core.app.settings.NotificationSettings; import org.transdroid.core.app.settings.ServerSetting; import org.transdroid.core.gui.*; import org.transdroid.core.gui.log.Log; import org.transdroid.daemon.IDaemonAdapter; import org.transdroid.daemon.Torrent; import org.transdroid.daemon.task.DaemonTaskResult; import org.transdroid.daemon.task.RetrieveTask; import org.transdroid.daemon.task.RetrieveTaskSuccessResult; import android.annotation.TargetApi; import android.app.IntentService; import android.app.Notification; import android.app.Notification.Builder; import android.app.Notification.InboxStyle; import android.app.NotificationManager; import android.app.PendingIntent; import android.content.Intent; import android.os.Build; /** * A background service that checks all user-configured servers (if so desired) for new and finished torrents. * @author Eric Kok */ @EService public class ServerCheckerService extends IntentService { @Bean protected Log log; @Bean protected ConnectivityHelper connectivityHelper; @Bean protected NotificationSettings notificationSettings; @Bean protected ApplicationSettings applicationSettings; @SystemService protected NotificationManager notificationManager; public ServerCheckerService() { super("ServerCheckerService"); } @SuppressWarnings("deprecation") @TargetApi(Build.VERSION_CODES.JELLY_BEAN) @Override protected void onHandleIntent(Intent intent) { if (!connectivityHelper.shouldPerformBackgroundActions() || !notificationSettings.isEnabledForTorrents()) { log.d(this, "Skip the server checker service, as background data is disabled, the service is disabled or we are not connected."); return; } int notifyBase = 10000; for (ServerSetting server : applicationSettings.getAllServerSettings()) { // No need to check if the server is not properly configured or none of the two types of notifications are // enabled by the user for this specific server if (server.getType() == null || server.getAddress() == null || server.getAddress().equals("") || !(server.shouldAlarmOnFinishedDownload() || server.shouldAlarmOnNewTorrent())) continue; // Get the statistics for the last time we checked this server JSONArray lastStats = applicationSettings.getServerLastStats(server); // Synchronously retrieve torrents listing IDaemonAdapter adapter = server.createServerAdapter(connectivityHelper.getConnectedNetworkName(), this); DaemonTaskResult result = RetrieveTask.create(adapter).execute(log); if (!(result instanceof RetrieveTaskSuccessResult)) { // Cannot retrieve torrents at this time continue; } List<Torrent> retrieved = ((RetrieveTaskSuccessResult) result).getTorrents(); log.d(this, server.getName() + ": Retrieved torrent listing"); // Check for differences between the last and the current stats JSONArray currentStats = new JSONArray(); List<Torrent> newTorrents = new ArrayList<Torrent>(); List<Torrent> doneTorrents = new ArrayList<Torrent>(); for (Torrent torrent : retrieved) { // Remember this torrent for the next time try { currentStats.put(new JSONObject().put("id", torrent.getUniqueID()).put("done", torrent.getPartDone() == 1F)); } catch (JSONException e) { // Can't build the JSON object; this should not happen and we can safely ignore it } // See if this torrent was done the last time we checked if (lastStats != null) { Boolean wasDone = findLastDoneStat(lastStats, torrent); if (server.shouldAlarmOnNewTorrent() && wasDone == null) { // This torrent wasn't present earlier newTorrents.add(torrent); continue; } if (server.shouldAlarmOnFinishedDownload() && torrent.getPartDone() == 1F && wasDone != null && !wasDone) // This torrent is now done, but wasn't before doneTorrents.add(torrent); } } // Store the now-current statistics on torrents for the next time we check this server applicationSettings.setServerLastStats(server, currentStats); // Notify on new and now-done torrents for this server log.d(this, server.getName() + ": " + newTorrents.size() + " new torrents, " + doneTorrents.size() + " newly finished torrents."); Intent i = new Intent(this, TorrentsActivity_.class); i.putExtra("org.transdroid.START_SERVER", server.getOrder()); // Should start the main activity directly into this server PendingIntent pi = PendingIntent.getActivity(this, notifyBase + server.getOrder(), i, Intent.FLAG_ACTIVITY_NEW_TASK); ArrayList<Torrent> affectedTorrents = new ArrayList<Torrent>(newTorrents.size() + doneTorrents.size()); affectedTorrents.addAll(newTorrents); affectedTorrents.addAll(doneTorrents); String title; if (newTorrents.size() > 0 && doneTorrents.size() > 0) { // Note: use the 'one' plural iif 1 new torrent was added and 1 was newly finished title = getResources().getQuantityString(R.plurals.status_service_finished, newTorrents.size() + doneTorrents.size() == 2 ? 1 : 2, Integer.toString(newTorrents.size()), Integer.toString(doneTorrents.size())); } else if (newTorrents.size() > 0) { title = getResources().getQuantityString(R.plurals.status_service_added, newTorrents.size(), Integer.toString(newTorrents.size())); } else if (doneTorrents.size() > 0) { title = getResources().getQuantityString(R.plurals.status_service_finished, doneTorrents.size(), Integer.toString(doneTorrents.size())); } else { // No notification to show continue; } String forString = ""; for (Torrent affected : affectedTorrents) { forString += affected.getName() + ", "; } forString = forString.substring(0, forString.length() - 2); // Build the basic notification Builder builder = new Notification.Builder(this).setSmallIcon(R.drawable.ic_stat_notification) .setTicker(title).setContentTitle(title).setContentText(forString) .setNumber(affectedTorrents.size()) .setLights(notificationSettings.getDesiredLedColour(), 600, 1000) .setSound(notificationSettings.getSound()).setAutoCancel(true).setContentIntent(pi); if (notificationSettings.shouldVibrate()) builder.setVibrate(notificationSettings.getDefaultVibratePattern()); // Add at most 5 lines with the affected torrents Notification notification; if (android.os.Build.VERSION.SDK_INT >= 16) { InboxStyle inbox = new Notification.InboxStyle(builder); if (affectedTorrents.size() < 6) { for (Torrent affectedTorrent : affectedTorrents) { inbox.addLine(affectedTorrent.getName()); } } else { for (int j = 0; j < 4; j++) { inbox.addLine(affectedTorrents.get(j).getName()); } inbox.addLine(getString(R.string.status_service_andothers, affectedTorrents.get(5).getName())); } notification = inbox.build(); } else { notification = builder.getNotification(); } notificationManager.notify(notifyBase + server.getOrder(), notification); } } private Boolean findLastDoneStat(JSONArray lastStats, Torrent torrent) { for (int i = 0; i < lastStats.length(); i++) { try { if (lastStats.getJSONObject(i).getString("id").equals(torrent.getUniqueID())) return lastStats.getJSONObject(i).getBoolean("done"); } catch (JSONException e) { return null; } } return null; } }