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