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.RemoteInput;
 17import android.support.v4.content.ContextCompat;
 18import android.text.SpannableString;
 19import android.text.style.StyleSpan;
 20import android.util.DisplayMetrics;
 21import android.util.Log;
 22
 23import java.io.FileNotFoundException;
 24import java.util.ArrayList;
 25import java.util.Calendar;
 26import java.util.HashMap;
 27import java.util.Iterator;
 28import java.util.LinkedHashMap;
 29import java.util.List;
 30import java.util.Map;
 31import java.util.concurrent.atomic.AtomicInteger;
 32import java.util.regex.Matcher;
 33import java.util.regex.Pattern;
 34
 35import eu.siacs.conversations.Config;
 36import eu.siacs.conversations.R;
 37import eu.siacs.conversations.entities.Account;
 38import eu.siacs.conversations.entities.Contact;
 39import eu.siacs.conversations.entities.Conversation;
 40import eu.siacs.conversations.entities.Message;
 41import eu.siacs.conversations.ui.ConversationActivity;
 42import eu.siacs.conversations.ui.ManageAccountActivity;
 43import eu.siacs.conversations.ui.SettingsActivity;
 44import eu.siacs.conversations.ui.TimePreference;
 45import eu.siacs.conversations.utils.GeoHelper;
 46import eu.siacs.conversations.utils.UIHelper;
 47
 48public class NotificationService {
 49
 50	private static final String CONVERSATIONS_GROUP = "eu.siacs.conversations";
 51	private final XmppConnectionService mXmppConnectionService;
 52
 53	private final LinkedHashMap<String, ArrayList<Message>> notifications = new LinkedHashMap<>();
 54
 55	public static final int NOTIFICATION_ID = 0x2342;
 56	public static final int FOREGROUND_NOTIFICATION_ID = 0x8899;
 57	public static final int ERROR_NOTIFICATION_ID = 0x5678;
 58
 59	private Conversation mOpenConversation;
 60	private boolean mIsInForeground;
 61	private long mLastNotification;
 62
 63	private final HashMap<Conversation,AtomicInteger> mBacklogMessageCounter = new HashMap<>();
 64
 65	public NotificationService(final XmppConnectionService service) {
 66		this.mXmppConnectionService = service;
 67	}
 68
 69	public boolean notify(final Message message) {
 70		return message.getStatus() == Message.STATUS_RECEIVED
 71				&& notificationsEnabled()
 72				&& !message.getConversation().isMuted()
 73				&& (message.getConversation().alwaysNotify() || wasHighlightedOrPrivate(message))
 74				&& (!message.getConversation().isWithStranger() || notificationsFromStrangers())
 75		;
 76	}
 77
 78	public boolean notificationsEnabled() {
 79		return mXmppConnectionService.getPreferences().getBoolean("show_notification", true);
 80	}
 81
 82	private boolean notificationsFromStrangers() {
 83		return mXmppConnectionService.getPreferences().getBoolean("notifications_from_strangers",
 84				mXmppConnectionService.getResources().getBoolean(R.bool.notifications_from_strangers));
 85	}
 86
 87	public boolean isQuietHours() {
 88		if (!mXmppConnectionService.getPreferences().getBoolean("enable_quiet_hours", false)) {
 89			return false;
 90		}
 91		final long startTime = mXmppConnectionService.getPreferences().getLong("quiet_hours_start", TimePreference.DEFAULT_VALUE) % Config.MILLISECONDS_IN_DAY;
 92		final long endTime = mXmppConnectionService.getPreferences().getLong("quiet_hours_end", TimePreference.DEFAULT_VALUE) % Config.MILLISECONDS_IN_DAY;
 93		final long nowTime = Calendar.getInstance().getTimeInMillis() % Config.MILLISECONDS_IN_DAY;
 94
 95		if (endTime < startTime) {
 96			return nowTime > startTime || nowTime < endTime;
 97		} else {
 98			return nowTime > startTime && nowTime < endTime;
 99		}
100	}
101
102	public void pushFromBacklog(final Message message) {
103		if (notify(message)) {
104			synchronized (notifications) {
105				getBacklogMessageCounter(message.getConversation()).incrementAndGet();
106				pushToStack(message);
107			}
108		}
109	}
110
111	private AtomicInteger getBacklogMessageCounter(Conversation conversation) {
112		synchronized (mBacklogMessageCounter) {
113			if (!mBacklogMessageCounter.containsKey(conversation)) {
114				mBacklogMessageCounter.put(conversation,new AtomicInteger(0));
115			}
116			return mBacklogMessageCounter.get(conversation);
117		}
118	}
119
120	public void pushFromDirectReply(final Message message) {
121		synchronized (notifications) {
122			pushToStack(message);
123			updateNotification(false);
124		}
125	}
126
127	public void finishBacklog(boolean notify, Account account) {
128		synchronized (notifications) {
129			mXmppConnectionService.updateUnreadCountBadge();
130			if (account == null || !notify) {
131				updateNotification(notify);
132			} else {
133				updateNotification(getBacklogMessageCount(account) > 0);
134			}
135		}
136	}
137
138	private int getBacklogMessageCount(Account account) {
139		int count = 0;
140		synchronized (this.mBacklogMessageCounter) {
141			for(Iterator<Map.Entry<Conversation, AtomicInteger>> it = mBacklogMessageCounter.entrySet().iterator(); it.hasNext(); ) {
142				Map.Entry<Conversation, AtomicInteger> entry = it.next();
143				if (entry.getKey().getAccount() == account) {
144					count += entry.getValue().get();
145					it.remove();
146				}
147			}
148		}
149		Log.d(Config.LOGTAG,account.getJid().toBareJid()+": backlog message count="+count);
150		return count;
151	}
152
153	public void finishBacklog(boolean notify) {
154		finishBacklog(notify,null);
155	}
156
157	private void pushToStack(final Message message) {
158		final String conversationUuid = message.getConversationUuid();
159		if (notifications.containsKey(conversationUuid)) {
160			notifications.get(conversationUuid).add(message);
161		} else {
162			final ArrayList<Message> mList = new ArrayList<>();
163			mList.add(message);
164			notifications.put(conversationUuid, mList);
165		}
166	}
167
168	public void push(final Message message) {
169		mXmppConnectionService.updateUnreadCountBadge();
170		if (!notify(message)) {
171			Log.d(Config.LOGTAG,message.getConversation().getAccount().getJid().toBareJid()+": suppressing notification because turned off");
172			return;
173		}
174		final boolean isScreenOn = mXmppConnectionService.isInteractive();
175		if (this.mIsInForeground && isScreenOn && this.mOpenConversation == message.getConversation()) {
176			Log.d(Config.LOGTAG,message.getConversation().getAccount().getJid().toBareJid()+": suppressing notification because conversation is open");
177			return;
178		}
179		synchronized (notifications) {
180			pushToStack(message);
181			final Account account = message.getConversation().getAccount();
182			final boolean doNotify = (!(this.mIsInForeground && this.mOpenConversation == null) || !isScreenOn)
183					&& !account.inGracePeriod()
184					&& !this.inMiniGracePeriod(account);
185			updateNotification(doNotify);
186		}
187	}
188
189	public void clear() {
190		synchronized (notifications) {
191			for(ArrayList<Message> messages : notifications.values()) {
192				markAsReadIfHasDirectReply(messages);
193			}
194			notifications.clear();
195			updateNotification(false);
196		}
197	}
198
199	public void clear(final Conversation conversation) {
200		synchronized (this.mBacklogMessageCounter) {
201			this.mBacklogMessageCounter.remove(conversation);
202		}
203		synchronized (notifications) {
204			markAsReadIfHasDirectReply(conversation);
205			notifications.remove(conversation.getUuid());
206			final NotificationManagerCompat notificationManager = NotificationManagerCompat.from(mXmppConnectionService);
207			notificationManager.cancel(conversation.getUuid(), NOTIFICATION_ID);
208			updateNotification(false);
209		}
210	}
211
212	private void markAsReadIfHasDirectReply(final Conversation conversation) {
213		markAsReadIfHasDirectReply(notifications.get(conversation.getUuid()));
214	}
215
216	private void markAsReadIfHasDirectReply(final ArrayList<Message> messages) {
217		if (messages != null && messages.size() > 0) {
218			Message last = messages.get(messages.size() - 1);
219			if (last.getStatus() != Message.STATUS_RECEIVED) {
220				if (mXmppConnectionService.markRead(last.getConversation(), false)) {
221					mXmppConnectionService.updateConversationUi();
222				}
223			}
224		}
225	}
226
227	private void setNotificationColor(final Builder mBuilder) {
228		mBuilder.setColor(ContextCompat.getColor(mXmppConnectionService, R.color.primary500));
229	}
230
231	public void updateNotification(final boolean notify) {
232		final NotificationManagerCompat notificationManager = NotificationManagerCompat.from(mXmppConnectionService);
233		final SharedPreferences preferences = mXmppConnectionService.getPreferences();
234
235		if (notifications.size() == 0) {
236			notificationManager.cancel(NOTIFICATION_ID);
237		} else {
238			if (notify) {
239				this.markLastNotification();
240			}
241			final Builder mBuilder;
242			if (notifications.size() == 1 && Build.VERSION.SDK_INT < Build.VERSION_CODES.N) {
243				mBuilder = buildSingleConversations(notifications.values().iterator().next());
244				modifyForSoundVibrationAndLight(mBuilder, notify, preferences);
245				notificationManager.notify(NOTIFICATION_ID, mBuilder.build());
246			} else {
247				mBuilder = buildMultipleConversation();
248				modifyForSoundVibrationAndLight(mBuilder, notify, preferences);
249				notificationManager.notify(NOTIFICATION_ID, mBuilder.build());
250				for(Map.Entry<String,ArrayList<Message>> entry : notifications.entrySet()) {
251					Builder singleBuilder = buildSingleConversations(entry.getValue());
252					singleBuilder.setGroup(CONVERSATIONS_GROUP);
253					modifyForSoundVibrationAndLight(singleBuilder,notify,preferences);
254					notificationManager.notify(entry.getKey(), NOTIFICATION_ID ,singleBuilder.build());
255				}
256			}
257		}
258	}
259
260
261	private void modifyForSoundVibrationAndLight(Builder mBuilder, boolean notify, SharedPreferences preferences) {
262		final String ringtone = preferences.getString("notification_ringtone", null);
263		final boolean vibrate = preferences.getBoolean("vibrate_on_notification", true);
264		final boolean led = preferences.getBoolean("led", true);
265		if (notify && !isQuietHours()) {
266			if (vibrate) {
267				final int dat = 70;
268				final long[] pattern = {0, 3 * dat, dat, dat};
269				mBuilder.setVibrate(pattern);
270			} else {
271				mBuilder.setVibrate(new long[]{0});
272			}
273			if (ringtone != null) {
274				mBuilder.setSound(Uri.parse(ringtone));
275			}
276		}
277		if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
278			mBuilder.setCategory(Notification.CATEGORY_MESSAGE);
279		}
280		mBuilder.setPriority(notify ? NotificationCompat.PRIORITY_DEFAULT : NotificationCompat.PRIORITY_LOW);
281		setNotificationColor(mBuilder);
282		mBuilder.setDefaults(0);
283		if (led) {
284			mBuilder.setLights(0xff00FF00, 2000, 3000);
285		}
286	}
287
288	private Builder buildMultipleConversation() {
289		final Builder mBuilder = new NotificationCompat.Builder(
290				mXmppConnectionService);
291		final NotificationCompat.InboxStyle style = new NotificationCompat.InboxStyle();
292		style.setBigContentTitle(notifications.size()
293				+ " "
294				+ mXmppConnectionService
295				.getString(R.string.unread_conversations));
296		final StringBuilder names = new StringBuilder();
297		Conversation conversation = null;
298		for (final ArrayList<Message> messages : notifications.values()) {
299			if (messages.size() > 0) {
300				conversation = messages.get(0).getConversation();
301				final String name = conversation.getName();
302				SpannableString styledString;
303				if (Config.HIDE_MESSAGE_TEXT_IN_NOTIFICATION) {
304					int count = messages.size();
305					styledString = new SpannableString(name + ": " + mXmppConnectionService.getResources().getQuantityString(R.plurals.x_messages,count,count));
306					styledString.setSpan(new StyleSpan(Typeface.BOLD), 0, name.length(), 0);
307					style.addLine(styledString);
308				} else {
309					styledString = new SpannableString(name + ": " + UIHelper.getMessagePreview(mXmppConnectionService, messages.get(0)).first);
310					styledString.setSpan(new StyleSpan(Typeface.BOLD), 0, name.length(), 0);
311					style.addLine(styledString);
312				}
313				names.append(name);
314				names.append(", ");
315			}
316		}
317		if (names.length() >= 2) {
318			names.delete(names.length() - 2, names.length());
319		}
320		mBuilder.setContentTitle(notifications.size()
321				+ " "
322				+ mXmppConnectionService
323				.getString(R.string.unread_conversations));
324		mBuilder.setContentText(names.toString());
325		mBuilder.setStyle(style);
326		if (conversation != null) {
327			mBuilder.setContentIntent(createContentIntent(conversation));
328		}
329		mBuilder.setGroupSummary(true);
330		mBuilder.setGroup(CONVERSATIONS_GROUP);
331		mBuilder.setDeleteIntent(createDeleteIntent(null));
332		mBuilder.setSmallIcon(R.drawable.ic_notification);
333		return mBuilder;
334	}
335
336	private Builder buildSingleConversations(final ArrayList<Message> messages) {
337		final Builder mBuilder = new NotificationCompat.Builder(mXmppConnectionService);
338		if (messages.size() >= 1) {
339			final Conversation conversation = messages.get(0).getConversation();
340			mBuilder.setLargeIcon(mXmppConnectionService.getAvatarService()
341					.get(conversation, getPixel(64)));
342			mBuilder.setContentTitle(conversation.getName());
343			if (Config.HIDE_MESSAGE_TEXT_IN_NOTIFICATION) {
344				int count = messages.size();
345				mBuilder.setContentText(mXmppConnectionService.getResources().getQuantityString(R.plurals.x_messages,count,count));
346			} else {
347				Message message;
348				if ((message = getImage(messages)) != null) {
349					modifyForImage(mBuilder, message, messages);
350				} else {
351					modifyForTextOnly(mBuilder, messages);
352				}
353				RemoteInput remoteInput = new RemoteInput.Builder("text_reply").setLabel(UIHelper.getMessageHint(mXmppConnectionService, conversation)).build();
354				NotificationCompat.Action replyAction = new NotificationCompat.Action.Builder(R.drawable.ic_send_text_offline, "Reply", createReplyIntent(conversation, false)).addRemoteInput(remoteInput).build();
355				NotificationCompat.Action wearReplyAction = new NotificationCompat.Action.Builder(R.drawable.ic_wear_reply, "Reply", createReplyIntent(conversation, true)).addRemoteInput(remoteInput).build();
356				mBuilder.extend(new NotificationCompat.WearableExtender().addAction(wearReplyAction));
357				if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
358					mBuilder.addAction(replyAction);
359				}
360				if ((message = getFirstDownloadableMessage(messages)) != null) {
361					mBuilder.addAction(
362							Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP ?
363									R.drawable.ic_file_download_white_24dp : R.drawable.ic_action_download,
364							mXmppConnectionService.getResources().getString(R.string.download_x_file,
365									UIHelper.getFileDescriptionString(mXmppConnectionService, message)),
366							createDownloadIntent(message)
367					);
368				}
369				if ((message = getFirstLocationMessage(messages)) != null) {
370					mBuilder.addAction(R.drawable.ic_room_white_24dp,
371							mXmppConnectionService.getString(R.string.show_location),
372							createShowLocationIntent(message));
373				}
374			}
375			if (conversation.getMode() == Conversation.MODE_SINGLE) {
376				Contact contact = conversation.getContact();
377				Uri systemAccount = contact.getSystemAccount();
378				if (systemAccount != null) {
379					mBuilder.addPerson(systemAccount.toString());
380				}
381			}
382			mBuilder.setWhen(conversation.getLatestMessage().getTimeSent());
383			mBuilder.setSmallIcon(R.drawable.ic_notification);
384			mBuilder.setDeleteIntent(createDeleteIntent(conversation));
385			mBuilder.setContentIntent(createContentIntent(conversation));
386		}
387		return mBuilder;
388	}
389
390	private void modifyForImage(final Builder builder, final Message message,
391								final ArrayList<Message> messages) {
392		try {
393			final Bitmap bitmap = mXmppConnectionService.getFileBackend()
394					.getThumbnail(message, getPixel(288), false);
395			final ArrayList<Message> tmp = new ArrayList<>();
396			for (final Message msg : messages) {
397				if (msg.getType() == Message.TYPE_TEXT
398						&& msg.getTransferable() == null) {
399					tmp.add(msg);
400				}
401			}
402			final BigPictureStyle bigPictureStyle = new NotificationCompat.BigPictureStyle();
403			bigPictureStyle.bigPicture(bitmap);
404			if (tmp.size() > 0) {
405				CharSequence text = getMergedBodies(tmp);
406				bigPictureStyle.setSummaryText(text);
407				builder.setContentText(text);
408			} else {
409				builder.setContentText(mXmppConnectionService.getString(
410						R.string.received_x_file,
411						UIHelper.getFileDescriptionString(mXmppConnectionService, message)));
412			}
413			builder.setStyle(bigPictureStyle);
414		} catch (final FileNotFoundException e) {
415			modifyForTextOnly(builder, messages);
416		}
417	}
418
419	private void modifyForTextOnly(final Builder builder, final ArrayList<Message> messages) {
420		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
421			NotificationCompat.MessagingStyle messagingStyle = new NotificationCompat.MessagingStyle(mXmppConnectionService.getString(R.string.me));
422			Conversation conversation = messages.get(0).getConversation();
423			if (conversation.getMode() == Conversation.MODE_MULTI) {
424				messagingStyle.setConversationTitle(conversation.getName());
425			}
426			for (Message message : messages) {
427				String sender = message.getStatus() == Message.STATUS_RECEIVED ? UIHelper.getMessageDisplayName(message) : null;
428				messagingStyle.addMessage(UIHelper.getMessagePreview(mXmppConnectionService,message).first, message.getTimeSent(), sender);
429			}
430			builder.setStyle(messagingStyle);
431		} else {
432			if(messages.get(0).getConversation().getMode() == Conversation.MODE_SINGLE) {
433				builder.setStyle(new NotificationCompat.BigTextStyle().bigText(getMergedBodies(messages)));
434				builder.setContentText(UIHelper.getMessagePreview(mXmppConnectionService, messages.get(0)).first);
435			} else {
436				final NotificationCompat.InboxStyle style = new NotificationCompat.InboxStyle();
437				SpannableString styledString;
438				for (Message message : messages) {
439					final String name = UIHelper.getMessageDisplayName(message);
440					styledString = new SpannableString(name + ": " + message.getBody());
441					styledString.setSpan(new StyleSpan(Typeface.BOLD), 0, name.length(), 0);
442					style.addLine(styledString);
443				}
444				builder.setStyle(style);
445				int count = messages.size();
446				if(count == 1) {
447					final String name = UIHelper.getMessageDisplayName(messages.get(0));
448					styledString = new SpannableString(name + ": " + messages.get(0).getBody());
449					styledString.setSpan(new StyleSpan(Typeface.BOLD), 0, name.length(), 0);
450					builder.setContentText(styledString);
451				} else {
452					builder.setContentText(mXmppConnectionService.getResources().getQuantityString(R.plurals.x_messages,count,count));
453				}
454			}
455		}
456	}
457
458	private Message getImage(final Iterable<Message> messages) {
459		Message image = null;
460		for (final Message message : messages) {
461			if (message.getStatus() != Message.STATUS_RECEIVED) {
462				return null;
463			}
464			if (message.getType() != Message.TYPE_TEXT
465					&& message.getTransferable() == null
466					&& message.getEncryption() != Message.ENCRYPTION_PGP
467					&& message.getFileParams().height > 0) {
468				image = message;
469			}
470		}
471		return image;
472	}
473
474	private Message getFirstDownloadableMessage(final Iterable<Message> messages) {
475		for (final Message message : messages) {
476			if (message.getTransferable() != null || (message.getType() == Message.TYPE_TEXT && message.treatAsDownloadable())) {
477				return message;
478			}
479		}
480		return null;
481	}
482
483	private Message getFirstLocationMessage(final Iterable<Message> messages) {
484		for (final Message message : messages) {
485			if (GeoHelper.isGeoUri(message.getBody())) {
486				return message;
487			}
488		}
489		return null;
490	}
491
492	private CharSequence getMergedBodies(final ArrayList<Message> messages) {
493		final StringBuilder text = new StringBuilder();
494		for(Message message : messages) {
495			if (text.length() != 0) {
496				text.append("\n");
497			}
498			text.append(UIHelper.getMessagePreview(mXmppConnectionService, message).first);
499		}
500		return text.toString();
501	}
502
503	private PendingIntent createShowLocationIntent(final Message message) {
504		Iterable<Intent> intents = GeoHelper.createGeoIntentsFromMessage(message);
505		for (Intent intent : intents) {
506			if (intent.resolveActivity(mXmppConnectionService.getPackageManager()) != null) {
507				return PendingIntent.getActivity(mXmppConnectionService, 18, intent, PendingIntent.FLAG_UPDATE_CURRENT);
508			}
509		}
510		return createOpenConversationsIntent();
511	}
512
513	private PendingIntent createContentIntent(final String conversationUuid, final String downloadMessageUuid) {
514		final Intent viewConversationIntent = new Intent(mXmppConnectionService,ConversationActivity.class);
515		viewConversationIntent.setAction(ConversationActivity.ACTION_VIEW_CONVERSATION);
516		viewConversationIntent.putExtra(ConversationActivity.CONVERSATION, conversationUuid);
517		if (downloadMessageUuid != null) {
518			viewConversationIntent.putExtra(ConversationActivity.EXTRA_DOWNLOAD_UUID, downloadMessageUuid);
519			return PendingIntent.getActivity(mXmppConnectionService,
520					conversationUuid.hashCode() % 389782,
521					viewConversationIntent,
522					PendingIntent.FLAG_UPDATE_CURRENT);
523		} else {
524			return PendingIntent.getActivity(mXmppConnectionService,
525					conversationUuid.hashCode() % 936236,
526					viewConversationIntent,
527					PendingIntent.FLAG_UPDATE_CURRENT);
528		}
529	}
530
531	private PendingIntent createDownloadIntent(final Message message) {
532		return createContentIntent(message.getConversationUuid(), message.getUuid());
533	}
534
535	private PendingIntent createContentIntent(final Conversation conversation) {
536		return createContentIntent(conversation.getUuid(), null);
537	}
538
539	private PendingIntent createDeleteIntent(Conversation conversation) {
540		final Intent intent = new Intent(mXmppConnectionService, XmppConnectionService.class);
541		intent.setAction(XmppConnectionService.ACTION_CLEAR_NOTIFICATION);
542		if (conversation != null) {
543			intent.putExtra("uuid", conversation.getUuid());
544			return PendingIntent.getService(mXmppConnectionService, conversation.getUuid().hashCode() % 247527, intent, 0);
545		}
546		return PendingIntent.getService(mXmppConnectionService, 0, intent, 0);
547	}
548
549	private PendingIntent createReplyIntent(Conversation conversation, boolean dismissAfterReply) {
550		final Intent intent = new Intent(mXmppConnectionService, XmppConnectionService.class);
551		intent.setAction(XmppConnectionService.ACTION_REPLY_TO_CONVERSATION);
552		intent.putExtra("uuid",conversation.getUuid());
553		intent.putExtra("dismiss_notification",dismissAfterReply);
554		int id =  conversation.getUuid().hashCode() % (dismissAfterReply ? 402359 : 426583);
555		return PendingIntent.getService(mXmppConnectionService, id, intent, 0);
556	}
557
558	private PendingIntent createDisableForeground() {
559		final Intent intent = new Intent(mXmppConnectionService,
560				XmppConnectionService.class);
561		intent.setAction(XmppConnectionService.ACTION_DISABLE_FOREGROUND);
562		return PendingIntent.getService(mXmppConnectionService, 34, intent, 0);
563	}
564
565	private PendingIntent createTryAgainIntent() {
566		final Intent intent = new Intent(mXmppConnectionService, XmppConnectionService.class);
567		intent.setAction(XmppConnectionService.ACTION_TRY_AGAIN);
568		return PendingIntent.getService(mXmppConnectionService, 45, intent, 0);
569	}
570
571	private PendingIntent createDismissErrorIntent() {
572		final Intent intent = new Intent(mXmppConnectionService, XmppConnectionService.class);
573		intent.setAction(XmppConnectionService.ACTION_DISMISS_ERROR_NOTIFICATIONS);
574		return PendingIntent.getService(mXmppConnectionService, 69, intent, 0);
575	}
576
577	private boolean wasHighlightedOrPrivate(final Message message) {
578		final String nick = message.getConversation().getMucOptions().getActualNick();
579		final Pattern highlight = generateNickHighlightPattern(nick);
580		if (message.getBody() == null || nick == null) {
581			return false;
582		}
583		final Matcher m = highlight.matcher(message.getBody());
584		return (m.find() || message.getType() == Message.TYPE_PRIVATE);
585	}
586
587	public static Pattern generateNickHighlightPattern(final String nick) {
588		// We expect a word boundary, i.e. space or start of string, followed by
589		// the
590		// nick (matched in case-insensitive manner), followed by optional
591		// punctuation (for example "bob: i disagree" or "how are you alice?"),
592		// followed by another word boundary.
593		return Pattern.compile("\\b" + Pattern.quote(nick) + "\\p{Punct}?\\b",
594				Pattern.CASE_INSENSITIVE | Pattern.UNICODE_CASE);
595	}
596
597	public void setOpenConversation(final Conversation conversation) {
598		this.mOpenConversation = conversation;
599	}
600
601	public void setIsInForeground(final boolean foreground) {
602		this.mIsInForeground = foreground;
603	}
604
605	private int getPixel(final int dp) {
606		final DisplayMetrics metrics = mXmppConnectionService.getResources()
607				.getDisplayMetrics();
608		return ((int) (dp * metrics.density));
609	}
610
611	private void markLastNotification() {
612		this.mLastNotification = SystemClock.elapsedRealtime();
613	}
614
615	private boolean inMiniGracePeriod(final Account account) {
616		final int miniGrace = account.getStatus() == Account.State.ONLINE ? Config.MINI_GRACE_PERIOD
617				: Config.MINI_GRACE_PERIOD * 2;
618		return SystemClock.elapsedRealtime() < (this.mLastNotification + miniGrace);
619	}
620
621	public Notification createForegroundNotification() {
622		final NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(mXmppConnectionService);
623
624		mBuilder.setContentTitle(mXmppConnectionService.getString(R.string.conversations_foreground_service));
625		if (Config.SHOW_CONNECTED_ACCOUNTS) {
626			List<Account> accounts = mXmppConnectionService.getAccounts();
627			int enabled = 0;
628			int connected = 0;
629			for (Account account : accounts) {
630				if (account.isOnlineAndConnected()) {
631					connected++;
632					enabled++;
633				} else if (!account.isOptionSet(Account.OPTION_DISABLED)) {
634					enabled++;
635				}
636			}
637			mBuilder.setContentText(mXmppConnectionService.getString(R.string.connected_accounts, connected, enabled));
638		} else {
639			mBuilder.setContentText(mXmppConnectionService.getString(R.string.touch_to_open_conversations));
640		}
641		mBuilder.setContentIntent(createOpenConversationsIntent());
642		mBuilder.setWhen(0);
643		mBuilder.setPriority(Config.SHOW_CONNECTED_ACCOUNTS ? NotificationCompat.PRIORITY_DEFAULT : NotificationCompat.PRIORITY_MIN);
644		mBuilder.setSmallIcon(R.drawable.ic_link_white_24dp);
645		if (Config.SHOW_DISABLE_FOREGROUND) {
646			final int cancelIcon;
647			if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
648				mBuilder.setCategory(Notification.CATEGORY_SERVICE);
649				cancelIcon = R.drawable.ic_cancel_white_24dp;
650			} else {
651				cancelIcon = R.drawable.ic_action_cancel;
652			}
653			mBuilder.addAction(cancelIcon,
654					mXmppConnectionService.getString(R.string.disable_foreground_service),
655					createDisableForeground());
656		}
657		return mBuilder.build();
658	}
659
660	private PendingIntent createOpenConversationsIntent() {
661		return PendingIntent.getActivity(mXmppConnectionService, 0, new Intent(mXmppConnectionService, ConversationActivity.class), 0);
662	}
663
664	public void updateErrorNotification() {
665		final NotificationManagerCompat notificationManager = NotificationManagerCompat.from(mXmppConnectionService);
666		final List<Account> errors = new ArrayList<>();
667		for (final Account account : mXmppConnectionService.getAccounts()) {
668			if (account.hasErrorStatus() && account.showErrorNotification()) {
669				errors.add(account);
670			}
671		}
672		if (mXmppConnectionService.getPreferences().getBoolean(SettingsActivity.KEEP_FOREGROUND_SERVICE, false)) {
673			notificationManager.notify(FOREGROUND_NOTIFICATION_ID, createForegroundNotification());
674		}
675		final NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(mXmppConnectionService);
676		if (errors.size() == 0) {
677			notificationManager.cancel(ERROR_NOTIFICATION_ID);
678			return;
679		} else if (errors.size() == 1) {
680			mBuilder.setContentTitle(mXmppConnectionService.getString(R.string.problem_connecting_to_account));
681			mBuilder.setContentText(errors.get(0).getJid().toBareJid().toString());
682		} else {
683			mBuilder.setContentTitle(mXmppConnectionService.getString(R.string.problem_connecting_to_accounts));
684			mBuilder.setContentText(mXmppConnectionService.getString(R.string.touch_to_fix));
685		}
686		mBuilder.addAction(R.drawable.ic_autorenew_white_24dp,
687				mXmppConnectionService.getString(R.string.try_again),
688				createTryAgainIntent());
689		mBuilder.setDeleteIntent(createDismissErrorIntent());
690		mBuilder.setVisibility(NotificationCompat.VISIBILITY_PUBLIC);
691		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
692			mBuilder.setSmallIcon(R.drawable.ic_warning_white_24dp);
693		} else {
694			mBuilder.setSmallIcon(R.drawable.ic_stat_alert_warning);
695		}
696		mBuilder.setContentIntent(PendingIntent.getActivity(mXmppConnectionService,
697				145,
698				new Intent(mXmppConnectionService,ManageAccountActivity.class),
699				PendingIntent.FLAG_UPDATE_CURRENT));
700		notificationManager.notify(ERROR_NOTIFICATION_ID, mBuilder.build());
701	}
702}