1package eu.siacs.conversations.services;
  2
  3import android.app.Notification;
  4import android.app.PendingIntent;
  5import android.content.Intent;
  6import android.content.SharedPreferences;
  7import android.graphics.Bitmap;
  8import android.graphics.Typeface;
  9import android.net.Uri;
 10import android.os.Build;
 11import android.os.SystemClock;
 12import android.support.v4.app.NotificationCompat;
 13import android.support.v4.app.NotificationCompat.BigPictureStyle;
 14import android.support.v4.app.NotificationCompat.Builder;
 15import android.support.v4.app.NotificationManagerCompat;
 16import android.support.v4.app.NotificationCompat.CarExtender.UnreadConversation;
 17import android.support.v4.app.RemoteInput;
 18import android.support.v4.content.ContextCompat;
 19import android.text.SpannableString;
 20import android.text.style.StyleSpan;
 21import android.util.DisplayMetrics;
 22import android.util.Log;
 23import android.util.Pair;
 24
 25import java.io.File;
 26import java.io.FileNotFoundException;
 27import java.util.ArrayList;
 28import java.util.Calendar;
 29import java.util.HashMap;
 30import java.util.Iterator;
 31import java.util.LinkedHashMap;
 32import java.util.List;
 33import java.util.Map;
 34import java.util.concurrent.atomic.AtomicInteger;
 35import java.util.regex.Matcher;
 36import java.util.regex.Pattern;
 37
 38import eu.siacs.conversations.Config;
 39import eu.siacs.conversations.R;
 40import eu.siacs.conversations.entities.Account;
 41import eu.siacs.conversations.entities.Contact;
 42import eu.siacs.conversations.entities.Conversation;
 43import eu.siacs.conversations.entities.Message;
 44import eu.siacs.conversations.persistance.FileBackend;
 45import eu.siacs.conversations.ui.ConversationActivity;
 46import eu.siacs.conversations.ui.ManageAccountActivity;
 47import eu.siacs.conversations.ui.SettingsActivity;
 48import eu.siacs.conversations.ui.TimePreference;
 49import eu.siacs.conversations.utils.GeoHelper;
 50import eu.siacs.conversations.utils.UIHelper;
 51import eu.siacs.conversations.xmpp.XmppConnection;
 52
 53public class NotificationService {
 54
 55	public static final Object CATCHUP_LOCK = new Object();
 56
 57	private static final String CONVERSATIONS_GROUP = "eu.siacs.conversations";
 58	private final XmppConnectionService mXmppConnectionService;
 59
 60	private final LinkedHashMap<String, ArrayList<Message>> notifications = new LinkedHashMap<>();
 61
 62	private static final int NOTIFICATION_ID_MULTIPLIER = 1024 * 1024;
 63
 64	public static final int NOTIFICATION_ID = 2 * NOTIFICATION_ID_MULTIPLIER;
 65	public static final int FOREGROUND_NOTIFICATION_ID = NOTIFICATION_ID_MULTIPLIER * 4;
 66	public static final int ERROR_NOTIFICATION_ID = NOTIFICATION_ID_MULTIPLIER * 6;
 67
 68	private Conversation mOpenConversation;
 69	private boolean mIsInForeground;
 70	private long mLastNotification;
 71
 72	private final HashMap<Conversation,AtomicInteger> mBacklogMessageCounter = new HashMap<>();
 73
 74	public NotificationService(final XmppConnectionService service) {
 75		this.mXmppConnectionService = service;
 76	}
 77
 78	public boolean notify(final Message message) {
 79		return message.getStatus() == Message.STATUS_RECEIVED
 80				&& notificationsEnabled()
 81				&& !message.getConversation().isMuted()
 82				&& (message.getConversation().alwaysNotify() || wasHighlightedOrPrivate(message))
 83				&& (!message.getConversation().isWithStranger() || notificationsFromStrangers())
 84		;
 85	}
 86
 87	public boolean notificationsEnabled() {
 88		return mXmppConnectionService.getPreferences().getBoolean("show_notification", true);
 89	}
 90
 91	private boolean notificationsFromStrangers() {
 92		return mXmppConnectionService.getPreferences().getBoolean("notifications_from_strangers",
 93				mXmppConnectionService.getResources().getBoolean(R.bool.notifications_from_strangers));
 94	}
 95
 96	public boolean isQuietHours() {
 97		if (!mXmppConnectionService.getPreferences().getBoolean("enable_quiet_hours", false)) {
 98			return false;
 99		}
100		final long startTime = mXmppConnectionService.getPreferences().getLong("quiet_hours_start", TimePreference.DEFAULT_VALUE) % Config.MILLISECONDS_IN_DAY;
101		final long endTime = mXmppConnectionService.getPreferences().getLong("quiet_hours_end", TimePreference.DEFAULT_VALUE) % Config.MILLISECONDS_IN_DAY;
102		final long nowTime = Calendar.getInstance().getTimeInMillis() % Config.MILLISECONDS_IN_DAY;
103
104		if (endTime < startTime) {
105			return nowTime > startTime || nowTime < endTime;
106		} else {
107			return nowTime > startTime && nowTime < endTime;
108		}
109	}
110
111	public void pushFromBacklog(final Message message) {
112		if (notify(message)) {
113			synchronized (notifications) {
114				getBacklogMessageCounter(message.getConversation()).incrementAndGet();
115				pushToStack(message);
116			}
117		}
118	}
119
120	private AtomicInteger getBacklogMessageCounter(Conversation conversation) {
121		synchronized (mBacklogMessageCounter) {
122			if (!mBacklogMessageCounter.containsKey(conversation)) {
123				mBacklogMessageCounter.put(conversation,new AtomicInteger(0));
124			}
125			return mBacklogMessageCounter.get(conversation);
126		}
127	}
128
129	public void pushFromDirectReply(final Message message) {
130		synchronized (notifications) {
131			pushToStack(message);
132			updateNotification(false);
133		}
134	}
135
136	public void finishBacklog(boolean notify, Account account) {
137		synchronized (notifications) {
138			mXmppConnectionService.updateUnreadCountBadge();
139			if (account == null || !notify) {
140				updateNotification(notify);
141			} else {
142				updateNotification(getBacklogMessageCount(account) > 0);
143			}
144		}
145	}
146
147	private int getBacklogMessageCount(Account account) {
148		int count = 0;
149		synchronized (this.mBacklogMessageCounter) {
150			for(Iterator<Map.Entry<Conversation, AtomicInteger>> it = mBacklogMessageCounter.entrySet().iterator(); it.hasNext(); ) {
151				Map.Entry<Conversation, AtomicInteger> entry = it.next();
152				if (entry.getKey().getAccount() == account) {
153					count += entry.getValue().get();
154					it.remove();
155				}
156			}
157		}
158		Log.d(Config.LOGTAG,account.getJid().toBareJid()+": backlog message count="+count);
159		return count;
160	}
161
162	public void finishBacklog(boolean notify) {
163		finishBacklog(notify,null);
164	}
165
166	private void pushToStack(final Message message) {
167		final String conversationUuid = message.getConversationUuid();
168		if (notifications.containsKey(conversationUuid)) {
169			notifications.get(conversationUuid).add(message);
170		} else {
171			final ArrayList<Message> mList = new ArrayList<>();
172			mList.add(message);
173			notifications.put(conversationUuid, mList);
174		}
175	}
176
177	public void push(final Message message) {
178		synchronized (CATCHUP_LOCK) {
179			final XmppConnection connection = message.getConversation().getAccount().getXmppConnection();
180			if (connection.isWaitingForSmCatchup()) {
181				connection.incrementSmCatchupMessageCounter();
182				pushFromBacklog(message);
183			} else {
184				pushNow(message);
185			}
186		}
187	}
188
189	private void pushNow(final Message message) {
190		mXmppConnectionService.updateUnreadCountBadge();
191		if (!notify(message)) {
192			Log.d(Config.LOGTAG,message.getConversation().getAccount().getJid().toBareJid()+": suppressing notification because turned off");
193			return;
194		}
195		final boolean isScreenOn = mXmppConnectionService.isInteractive();
196		if (this.mIsInForeground && isScreenOn && this.mOpenConversation == message.getConversation()) {
197			Log.d(Config.LOGTAG,message.getConversation().getAccount().getJid().toBareJid()+": suppressing notification because conversation is open");
198			return;
199		}
200		synchronized (notifications) {
201			pushToStack(message);
202			final Account account = message.getConversation().getAccount();
203			final boolean doNotify = (!(this.mIsInForeground && this.mOpenConversation == null) || !isScreenOn)
204					&& !account.inGracePeriod()
205					&& !this.inMiniGracePeriod(account);
206			updateNotification(doNotify);
207		}
208	}
209
210	public void clear() {
211		synchronized (notifications) {
212			for(ArrayList<Message> messages : notifications.values()) {
213				markAsReadIfHasDirectReply(messages);
214			}
215			notifications.clear();
216			updateNotification(false);
217		}
218	}
219
220	public void clear(final Conversation conversation) {
221		synchronized (this.mBacklogMessageCounter) {
222			this.mBacklogMessageCounter.remove(conversation);
223		}
224		synchronized (notifications) {
225			markAsReadIfHasDirectReply(conversation);
226			notifications.remove(conversation.getUuid());
227			final NotificationManagerCompat notificationManager = NotificationManagerCompat.from(mXmppConnectionService);
228			notificationManager.cancel(conversation.getUuid(), NOTIFICATION_ID);
229			updateNotification(false);
230		}
231	}
232
233	private void markAsReadIfHasDirectReply(final Conversation conversation) {
234		markAsReadIfHasDirectReply(notifications.get(conversation.getUuid()));
235	}
236
237	private void markAsReadIfHasDirectReply(final ArrayList<Message> messages) {
238		if (messages != null && messages.size() > 0) {
239			Message last = messages.get(messages.size() - 1);
240			if (last.getStatus() != Message.STATUS_RECEIVED) {
241				if (mXmppConnectionService.markRead(last.getConversation(), false)) {
242					mXmppConnectionService.updateConversationUi();
243				}
244			}
245		}
246	}
247
248	private void setNotificationColor(final Builder mBuilder) {
249		mBuilder.setColor(ContextCompat.getColor(mXmppConnectionService, R.color.primary500));
250	}
251
252	public void updateNotification(final boolean notify) {
253		final NotificationManagerCompat notificationManager = NotificationManagerCompat.from(mXmppConnectionService);
254		final SharedPreferences preferences = mXmppConnectionService.getPreferences();
255
256		if (notifications.size() == 0) {
257			notificationManager.cancel(NOTIFICATION_ID);
258		} else {
259			if (notify) {
260				this.markLastNotification();
261			}
262			final Builder mBuilder;
263			if (notifications.size() == 1 && Build.VERSION.SDK_INT < Build.VERSION_CODES.N) {
264				mBuilder = buildSingleConversations(notifications.values().iterator().next());
265				modifyForSoundVibrationAndLight(mBuilder, notify, preferences);
266				notificationManager.notify(NOTIFICATION_ID, mBuilder.build());
267			} else {
268				mBuilder = buildMultipleConversation();
269				modifyForSoundVibrationAndLight(mBuilder, notify, preferences);
270				for(Map.Entry<String,ArrayList<Message>> entry : notifications.entrySet()) {
271					Builder singleBuilder = buildSingleConversations(entry.getValue());
272					singleBuilder.setGroup(CONVERSATIONS_GROUP);
273					modifyForSoundVibrationAndLight(singleBuilder,notify,preferences);
274					notificationManager.notify(entry.getKey(), NOTIFICATION_ID ,singleBuilder.build());
275				}
276				notificationManager.notify(NOTIFICATION_ID, mBuilder.build());
277			}
278		}
279	}
280
281
282	private void modifyForSoundVibrationAndLight(Builder mBuilder, boolean notify, SharedPreferences preferences) {
283		final String ringtone = preferences.getString("notification_ringtone", null);
284		final boolean vibrate = preferences.getBoolean("vibrate_on_notification", true);
285		final boolean led = preferences.getBoolean("led", true);
286		if (notify && !isQuietHours()) {
287			if (vibrate) {
288				final int dat = 70;
289				final long[] pattern = {0, 3 * dat, dat, dat};
290				mBuilder.setVibrate(pattern);
291			} else {
292				mBuilder.setVibrate(new long[]{0});
293			}
294			if (ringtone != null) {
295				Uri uri = Uri.parse(ringtone);
296				try {
297					mBuilder.setSound(fixRingtoneUri(uri));
298				} catch (SecurityException e) {
299					Log.d(Config.LOGTAG,"unable to use custom notification sound "+uri.toString());
300				}
301			}
302		}
303		if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
304			mBuilder.setCategory(Notification.CATEGORY_MESSAGE);
305		}
306		mBuilder.setPriority(notify ? NotificationCompat.PRIORITY_DEFAULT : NotificationCompat.PRIORITY_LOW);
307		setNotificationColor(mBuilder);
308		mBuilder.setDefaults(0);
309		if (led) {
310			mBuilder.setLights(0xff00FF00, 2000, 3000);
311		}
312	}
313
314	private Uri fixRingtoneUri(Uri uri) {
315		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N && "file".equals(uri.getScheme())) {
316			return FileBackend.getUriForFile(mXmppConnectionService,new File(uri.getPath()));
317		} else {
318			return uri;
319		}
320	}
321
322	private Builder buildMultipleConversation() {
323		final Builder mBuilder = new NotificationCompat.Builder(
324				mXmppConnectionService);
325		final NotificationCompat.InboxStyle style = new NotificationCompat.InboxStyle();
326		style.setBigContentTitle(notifications.size()
327				+ " "
328				+ mXmppConnectionService
329				.getString(R.string.unread_conversations));
330		final StringBuilder names = new StringBuilder();
331		Conversation conversation = null;
332		for (final ArrayList<Message> messages : notifications.values()) {
333			if (messages.size() > 0) {
334				conversation = messages.get(0).getConversation();
335				final String name = conversation.getName();
336				SpannableString styledString;
337				if (Config.HIDE_MESSAGE_TEXT_IN_NOTIFICATION) {
338					int count = messages.size();
339					styledString = new SpannableString(name + ": " + mXmppConnectionService.getResources().getQuantityString(R.plurals.x_messages,count,count));
340					styledString.setSpan(new StyleSpan(Typeface.BOLD), 0, name.length(), 0);
341					style.addLine(styledString);
342				} else {
343					styledString = new SpannableString(name + ": " + UIHelper.getMessagePreview(mXmppConnectionService, messages.get(0)).first);
344					styledString.setSpan(new StyleSpan(Typeface.BOLD), 0, name.length(), 0);
345					style.addLine(styledString);
346				}
347				names.append(name);
348				names.append(", ");
349			}
350		}
351		if (names.length() >= 2) {
352			names.delete(names.length() - 2, names.length());
353		}
354		mBuilder.setContentTitle(notifications.size()
355				+ " "
356				+ mXmppConnectionService
357				.getString(R.string.unread_conversations));
358		mBuilder.setContentText(names.toString());
359		mBuilder.setStyle(style);
360		if (conversation != null) {
361			mBuilder.setContentIntent(createContentIntent(conversation));
362		}
363		mBuilder.setGroupSummary(true);
364		mBuilder.setGroup(CONVERSATIONS_GROUP);
365		mBuilder.setDeleteIntent(createDeleteIntent(null));
366		mBuilder.setSmallIcon(R.drawable.ic_notification);
367		return mBuilder;
368	}
369
370	private Builder buildSingleConversations(final ArrayList<Message> messages) {
371		final Builder mBuilder = new NotificationCompat.Builder(mXmppConnectionService);
372		if (messages.size() >= 1) {
373			final Conversation conversation = messages.get(0).getConversation();
374			final UnreadConversation.Builder mUnreadBuilder = new UnreadConversation.Builder(conversation.getName());
375			mBuilder.setLargeIcon(mXmppConnectionService.getAvatarService()
376					.get(conversation, getPixel(64)));
377			mBuilder.setContentTitle(conversation.getName());
378			if (Config.HIDE_MESSAGE_TEXT_IN_NOTIFICATION) {
379				int count = messages.size();
380				mBuilder.setContentText(mXmppConnectionService.getResources().getQuantityString(R.plurals.x_messages,count,count));
381			} else {
382				Message message;
383				if ((message = getImage(messages)) != null) {
384					modifyForImage(mBuilder, mUnreadBuilder, message, messages);
385				} else {
386					modifyForTextOnly(mBuilder, mUnreadBuilder, messages);
387				}
388				RemoteInput remoteInput = new RemoteInput.Builder("text_reply").setLabel(UIHelper.getMessageHint(mXmppConnectionService, conversation)).build();
389				NotificationCompat.Action replyAction = new NotificationCompat.Action.Builder(R.drawable.ic_send_text_offline, "Reply", createReplyIntent(conversation, false)).addRemoteInput(remoteInput).build();
390				NotificationCompat.Action wearReplyAction = new NotificationCompat.Action.Builder(R.drawable.ic_wear_reply, "Reply", createReplyIntent(conversation, true)).addRemoteInput(remoteInput).build();
391				mBuilder.extend(new NotificationCompat.WearableExtender().addAction(wearReplyAction));
392				mUnreadBuilder.setReplyAction(createReplyIntent(conversation, true), remoteInput);
393				mUnreadBuilder.setReadPendingIntent(createReadPendingIntent(conversation));
394				mBuilder.extend(new NotificationCompat.CarExtender().setUnreadConversation(mUnreadBuilder.build()));
395				if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
396					mBuilder.addAction(replyAction);
397				}
398				if ((message = getFirstDownloadableMessage(messages)) != null) {
399					mBuilder.addAction(
400							Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP ?
401									R.drawable.ic_file_download_white_24dp : R.drawable.ic_action_download,
402							mXmppConnectionService.getResources().getString(R.string.download_x_file,
403									UIHelper.getFileDescriptionString(mXmppConnectionService, message)),
404							createDownloadIntent(message)
405					);
406				}
407				if ((message = getFirstLocationMessage(messages)) != null) {
408					mBuilder.addAction(R.drawable.ic_room_white_24dp,
409							mXmppConnectionService.getString(R.string.show_location),
410							createShowLocationIntent(message));
411				}
412			}
413			if (conversation.getMode() == Conversation.MODE_SINGLE) {
414				Contact contact = conversation.getContact();
415				Uri systemAccount = contact.getSystemAccount();
416				if (systemAccount != null) {
417					mBuilder.addPerson(systemAccount.toString());
418				}
419			}
420			mBuilder.setWhen(conversation.getLatestMessage().getTimeSent());
421			mBuilder.setSmallIcon(R.drawable.ic_notification);
422			mBuilder.setDeleteIntent(createDeleteIntent(conversation));
423			mBuilder.setContentIntent(createContentIntent(conversation));
424		}
425		return mBuilder;
426	}
427
428	private void modifyForImage(final Builder builder, final UnreadConversation.Builder uBuilder,
429								final Message message, final ArrayList<Message> messages) {
430		try {
431			final Bitmap bitmap = mXmppConnectionService.getFileBackend()
432					.getThumbnail(message, getPixel(288), false);
433			final ArrayList<Message> tmp = new ArrayList<>();
434			for (final Message msg : messages) {
435				if (msg.getType() == Message.TYPE_TEXT
436						&& msg.getTransferable() == null) {
437					tmp.add(msg);
438				}
439			}
440			final BigPictureStyle bigPictureStyle = new NotificationCompat.BigPictureStyle();
441			bigPictureStyle.bigPicture(bitmap);
442			if (tmp.size() > 0) {
443				CharSequence text = getMergedBodies(tmp);
444				bigPictureStyle.setSummaryText(text);
445				builder.setContentText(text);
446			} else {
447				builder.setContentText(mXmppConnectionService.getString(
448						R.string.received_x_file,
449						UIHelper.getFileDescriptionString(mXmppConnectionService, message)));
450			}
451			builder.setStyle(bigPictureStyle);
452		} catch (final FileNotFoundException e) {
453			modifyForTextOnly(builder, uBuilder, messages);
454		}
455	}
456
457	private void modifyForTextOnly(final Builder builder, final UnreadConversation.Builder uBuilder, final ArrayList<Message> messages) {
458		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
459			NotificationCompat.MessagingStyle messagingStyle = new NotificationCompat.MessagingStyle(mXmppConnectionService.getString(R.string.me));
460			Conversation conversation = messages.get(0).getConversation();
461			if (conversation.getMode() == Conversation.MODE_MULTI) {
462				messagingStyle.setConversationTitle(conversation.getName());
463			}
464			for (Message message : messages) {
465				String sender = message.getStatus() == Message.STATUS_RECEIVED ? UIHelper.getMessageDisplayName(message) : null;
466				messagingStyle.addMessage(UIHelper.getMessagePreview(mXmppConnectionService,message).first, message.getTimeSent(), sender);
467			}
468			builder.setStyle(messagingStyle);
469		} else {
470			if(messages.get(0).getConversation().getMode() == Conversation.MODE_SINGLE) {
471				builder.setStyle(new NotificationCompat.BigTextStyle().bigText(getMergedBodies(messages)));
472				builder.setContentText(UIHelper.getMessagePreview(mXmppConnectionService, messages.get(0)).first);
473			} else {
474				final NotificationCompat.InboxStyle style = new NotificationCompat.InboxStyle();
475				SpannableString styledString;
476				for (Message message : messages) {
477					final String name = UIHelper.getMessageDisplayName(message);
478					styledString = new SpannableString(name + ": " + message.getBody());
479					styledString.setSpan(new StyleSpan(Typeface.BOLD), 0, name.length(), 0);
480					style.addLine(styledString);
481				}
482				builder.setStyle(style);
483				int count = messages.size();
484				if(count == 1) {
485					final String name = UIHelper.getMessageDisplayName(messages.get(0));
486					styledString = new SpannableString(name + ": " + messages.get(0).getBody());
487					styledString.setSpan(new StyleSpan(Typeface.BOLD), 0, name.length(), 0);
488					builder.setContentText(styledString);
489				} else {
490					builder.setContentText(mXmppConnectionService.getResources().getQuantityString(R.plurals.x_messages,count,count));
491				}
492			}
493		}
494		/** message preview for Android Auto **/
495		for (Message message : messages) {
496			Pair<String,Boolean> preview = UIHelper.getMessagePreview(mXmppConnectionService, message);
497			// only show user written text
498			if (preview.second == false) {
499				uBuilder.addMessage(preview.first);
500				uBuilder.setLatestTimestamp(message.getTimeSent());
501			}
502		}
503	}
504
505	private Message getImage(final Iterable<Message> messages) {
506		Message image = null;
507		for (final Message message : messages) {
508			if (message.getStatus() != Message.STATUS_RECEIVED) {
509				return null;
510			}
511			if (message.getType() != Message.TYPE_TEXT
512					&& message.getTransferable() == null
513					&& message.getEncryption() != Message.ENCRYPTION_PGP
514					&& message.getFileParams().height > 0) {
515				image = message;
516			}
517		}
518		return image;
519	}
520
521	private Message getFirstDownloadableMessage(final Iterable<Message> messages) {
522		for (final Message message : messages) {
523			if (message.getTransferable() != null || (message.getType() == Message.TYPE_TEXT && message.treatAsDownloadable())) {
524				return message;
525			}
526		}
527		return null;
528	}
529
530	private Message getFirstLocationMessage(final Iterable<Message> messages) {
531		for (final Message message : messages) {
532			if (GeoHelper.isGeoUri(message.getBody())) {
533				return message;
534			}
535		}
536		return null;
537	}
538
539	private CharSequence getMergedBodies(final ArrayList<Message> messages) {
540		final StringBuilder text = new StringBuilder();
541		for(Message message : messages) {
542			if (text.length() != 0) {
543				text.append("\n");
544			}
545			text.append(UIHelper.getMessagePreview(mXmppConnectionService, message).first);
546		}
547		return text.toString();
548	}
549
550	private PendingIntent createShowLocationIntent(final Message message) {
551		Iterable<Intent> intents = GeoHelper.createGeoIntentsFromMessage(message);
552		for (Intent intent : intents) {
553			if (intent.resolveActivity(mXmppConnectionService.getPackageManager()) != null) {
554				return PendingIntent.getActivity(mXmppConnectionService, 18, intent, PendingIntent.FLAG_UPDATE_CURRENT);
555			}
556		}
557		return createOpenConversationsIntent();
558	}
559
560	private PendingIntent createContentIntent(final String conversationUuid, final String downloadMessageUuid) {
561		final Intent viewConversationIntent = new Intent(mXmppConnectionService,ConversationActivity.class);
562		viewConversationIntent.setAction(ConversationActivity.ACTION_VIEW_CONVERSATION);
563		viewConversationIntent.putExtra(ConversationActivity.CONVERSATION, conversationUuid);
564		if (downloadMessageUuid != null) {
565			viewConversationIntent.putExtra(ConversationActivity.EXTRA_DOWNLOAD_UUID, downloadMessageUuid);
566			return PendingIntent.getActivity(mXmppConnectionService,
567					(conversationUuid.hashCode() % NOTIFICATION_ID_MULTIPLIER) + 8 * NOTIFICATION_ID_MULTIPLIER,
568					viewConversationIntent,
569					PendingIntent.FLAG_UPDATE_CURRENT);
570		} else {
571			return PendingIntent.getActivity(mXmppConnectionService,
572					(conversationUuid.hashCode() % NOTIFICATION_ID_MULTIPLIER) + 10 * NOTIFICATION_ID_MULTIPLIER,
573					viewConversationIntent,
574					PendingIntent.FLAG_UPDATE_CURRENT);
575		}
576	}
577
578	private PendingIntent createDownloadIntent(final Message message) {
579		return createContentIntent(message.getConversationUuid(), message.getUuid());
580	}
581
582	private PendingIntent createContentIntent(final Conversation conversation) {
583		return createContentIntent(conversation.getUuid(), null);
584	}
585
586	private PendingIntent createDeleteIntent(Conversation conversation) {
587		final Intent intent = new Intent(mXmppConnectionService, XmppConnectionService.class);
588		intent.setAction(XmppConnectionService.ACTION_CLEAR_NOTIFICATION);
589		if (conversation != null) {
590			intent.putExtra("uuid", conversation.getUuid());
591			return PendingIntent.getService(mXmppConnectionService, (conversation.getUuid().hashCode() % NOTIFICATION_ID_MULTIPLIER) + 12 * NOTIFICATION_ID_MULTIPLIER, intent, 0);
592		}
593		return PendingIntent.getService(mXmppConnectionService, 0, intent, 0);
594	}
595
596	private PendingIntent createReplyIntent(Conversation conversation, boolean dismissAfterReply) {
597		final Intent intent = new Intent(mXmppConnectionService, XmppConnectionService.class);
598		intent.setAction(XmppConnectionService.ACTION_REPLY_TO_CONVERSATION);
599		intent.putExtra("uuid",conversation.getUuid());
600		intent.putExtra("dismiss_notification",dismissAfterReply);
601		int id =  (conversation.getUuid().hashCode() % NOTIFICATION_ID_MULTIPLIER) + (dismissAfterReply ? 12 : 14) * NOTIFICATION_ID_MULTIPLIER;
602		return PendingIntent.getService(mXmppConnectionService, id, intent, 0);
603	}
604
605	private PendingIntent createReadPendingIntent(Conversation conversation) {
606		final Intent intent = new Intent(mXmppConnectionService, XmppConnectionService.class);
607		intent.setAction(XmppConnectionService.ACTION_MARK_AS_READ);
608		intent.putExtra("uuid", conversation.getUuid());
609		intent.setPackage(mXmppConnectionService.getPackageName());
610		return PendingIntent.getService(mXmppConnectionService, (conversation.getUuid().hashCode() % NOTIFICATION_ID_MULTIPLIER) + 16 * NOTIFICATION_ID_MULTIPLIER, intent, PendingIntent.FLAG_UPDATE_CURRENT);
611	}
612
613	private PendingIntent createDisableForeground() {
614		final Intent intent = new Intent(mXmppConnectionService,
615				XmppConnectionService.class);
616		intent.setAction(XmppConnectionService.ACTION_DISABLE_FOREGROUND);
617		return PendingIntent.getService(mXmppConnectionService, 34, intent, 0);
618	}
619
620	private PendingIntent createTryAgainIntent() {
621		final Intent intent = new Intent(mXmppConnectionService, XmppConnectionService.class);
622		intent.setAction(XmppConnectionService.ACTION_TRY_AGAIN);
623		return PendingIntent.getService(mXmppConnectionService, 45, intent, 0);
624	}
625
626	private PendingIntent createDismissErrorIntent() {
627		final Intent intent = new Intent(mXmppConnectionService, XmppConnectionService.class);
628		intent.setAction(XmppConnectionService.ACTION_DISMISS_ERROR_NOTIFICATIONS);
629		return PendingIntent.getService(mXmppConnectionService, 69, intent, 0);
630	}
631
632	private boolean wasHighlightedOrPrivate(final Message message) {
633		final String nick = message.getConversation().getMucOptions().getActualNick();
634		final Pattern highlight = generateNickHighlightPattern(nick);
635		if (message.getBody() == null || nick == null) {
636			return false;
637		}
638		final Matcher m = highlight.matcher(message.getBody());
639		return (m.find() || message.getType() == Message.TYPE_PRIVATE);
640	}
641
642	public static Pattern generateNickHighlightPattern(final String nick) {
643		// We expect a word boundary, i.e. space or start of string, followed by
644		// the
645		// nick (matched in case-insensitive manner), followed by optional
646		// punctuation (for example "bob: i disagree" or "how are you alice?"),
647		// followed by another word boundary.
648		return Pattern.compile("\\b" + Pattern.quote(nick) + "\\p{Punct}?\\b",
649				Pattern.CASE_INSENSITIVE | Pattern.UNICODE_CASE);
650	}
651
652	public void setOpenConversation(final Conversation conversation) {
653		this.mOpenConversation = conversation;
654	}
655
656	public void setIsInForeground(final boolean foreground) {
657		this.mIsInForeground = foreground;
658	}
659
660	private int getPixel(final int dp) {
661		final DisplayMetrics metrics = mXmppConnectionService.getResources()
662				.getDisplayMetrics();
663		return ((int) (dp * metrics.density));
664	}
665
666	private void markLastNotification() {
667		this.mLastNotification = SystemClock.elapsedRealtime();
668	}
669
670	private boolean inMiniGracePeriod(final Account account) {
671		final int miniGrace = account.getStatus() == Account.State.ONLINE ? Config.MINI_GRACE_PERIOD
672				: Config.MINI_GRACE_PERIOD * 2;
673		return SystemClock.elapsedRealtime() < (this.mLastNotification + miniGrace);
674	}
675
676	public Notification createForegroundNotification() {
677		final NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(mXmppConnectionService);
678
679		mBuilder.setContentTitle(mXmppConnectionService.getString(R.string.conversations_foreground_service));
680		if (Config.SHOW_CONNECTED_ACCOUNTS) {
681			List<Account> accounts = mXmppConnectionService.getAccounts();
682			int enabled = 0;
683			int connected = 0;
684			for (Account account : accounts) {
685				if (account.isOnlineAndConnected()) {
686					connected++;
687					enabled++;
688				} else if (!account.isOptionSet(Account.OPTION_DISABLED)) {
689					enabled++;
690				}
691			}
692			mBuilder.setContentText(mXmppConnectionService.getString(R.string.connected_accounts, connected, enabled));
693		} else {
694			mBuilder.setContentText(mXmppConnectionService.getString(R.string.touch_to_open_conversations));
695		}
696		mBuilder.setContentIntent(createOpenConversationsIntent());
697		mBuilder.setWhen(0);
698		mBuilder.setPriority(Config.SHOW_CONNECTED_ACCOUNTS ? NotificationCompat.PRIORITY_DEFAULT : NotificationCompat.PRIORITY_MIN);
699		mBuilder.setSmallIcon(R.drawable.ic_link_white_24dp);
700		if (Config.SHOW_DISABLE_FOREGROUND) {
701			final int cancelIcon;
702			if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
703				mBuilder.setCategory(Notification.CATEGORY_SERVICE);
704				cancelIcon = R.drawable.ic_cancel_white_24dp;
705			} else {
706				cancelIcon = R.drawable.ic_action_cancel;
707			}
708			mBuilder.addAction(cancelIcon,
709					mXmppConnectionService.getString(R.string.disable_foreground_service),
710					createDisableForeground());
711		}
712		return mBuilder.build();
713	}
714
715	private PendingIntent createOpenConversationsIntent() {
716		return PendingIntent.getActivity(mXmppConnectionService, 0, new Intent(mXmppConnectionService, ConversationActivity.class), 0);
717	}
718
719	public void updateErrorNotification() {
720		final NotificationManagerCompat notificationManager = NotificationManagerCompat.from(mXmppConnectionService);
721		final List<Account> errors = new ArrayList<>();
722		for (final Account account : mXmppConnectionService.getAccounts()) {
723			if (account.hasErrorStatus() && account.showErrorNotification()) {
724				errors.add(account);
725			}
726		}
727		if (mXmppConnectionService.getPreferences().getBoolean(SettingsActivity.KEEP_FOREGROUND_SERVICE, false)) {
728			notificationManager.notify(FOREGROUND_NOTIFICATION_ID, createForegroundNotification());
729		}
730		final NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(mXmppConnectionService);
731		if (errors.size() == 0) {
732			notificationManager.cancel(ERROR_NOTIFICATION_ID);
733			return;
734		} else if (errors.size() == 1) {
735			mBuilder.setContentTitle(mXmppConnectionService.getString(R.string.problem_connecting_to_account));
736			mBuilder.setContentText(errors.get(0).getJid().toBareJid().toString());
737		} else {
738			mBuilder.setContentTitle(mXmppConnectionService.getString(R.string.problem_connecting_to_accounts));
739			mBuilder.setContentText(mXmppConnectionService.getString(R.string.touch_to_fix));
740		}
741		mBuilder.addAction(R.drawable.ic_autorenew_white_24dp,
742				mXmppConnectionService.getString(R.string.try_again),
743				createTryAgainIntent());
744		mBuilder.setDeleteIntent(createDismissErrorIntent());
745		mBuilder.setVisibility(NotificationCompat.VISIBILITY_PUBLIC);
746		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
747			mBuilder.setSmallIcon(R.drawable.ic_warning_white_24dp);
748		} else {
749			mBuilder.setSmallIcon(R.drawable.ic_stat_alert_warning);
750		}
751		mBuilder.setContentIntent(PendingIntent.getActivity(mXmppConnectionService,
752				145,
753				new Intent(mXmppConnectionService,ManageAccountActivity.class),
754				PendingIntent.FLAG_UPDATE_CURRENT));
755		notificationManager.notify(ERROR_NOTIFICATION_ID, mBuilder.build());
756	}
757}