1package eu.siacs.conversations.utils;
2
3import android.content.Context;
4import android.graphics.drawable.Drawable;
5import android.content.res.ColorStateList;
6import android.text.SpannableStringBuilder;
7import android.text.format.DateFormat;
8import android.text.format.DateUtils;
9import android.util.Pair;
10import android.widget.TextView;
11
12import androidx.annotation.ColorInt;
13import androidx.core.content.res.ResourcesCompat;
14import androidx.annotation.ColorRes;
15import androidx.annotation.StringRes;
16import androidx.core.content.ContextCompat;
17
18import com.google.android.material.color.MaterialColors;
19import com.google.common.base.Strings;
20import com.google.common.primitives.Ints;
21
22import java.math.BigInteger;
23import java.nio.charset.StandardCharsets;
24import java.security.MessageDigest;
25import java.util.Arrays;
26import java.util.Calendar;
27import java.util.Date;
28import java.util.List;
29import java.util.Locale;
30
31import eu.siacs.conversations.Config;
32import eu.siacs.conversations.R;
33import eu.siacs.conversations.crypto.axolotl.AxolotlService;
34import eu.siacs.conversations.entities.Account;
35import eu.siacs.conversations.entities.Contact;
36import eu.siacs.conversations.entities.Conversation;
37import eu.siacs.conversations.entities.Conversational;
38import eu.siacs.conversations.entities.Message;
39import eu.siacs.conversations.entities.MucOptions;
40import eu.siacs.conversations.entities.Presence;
41import eu.siacs.conversations.entities.RtpSessionStatus;
42import eu.siacs.conversations.entities.Transferable;
43import eu.siacs.conversations.services.XmppConnectionService;
44import eu.siacs.conversations.ui.util.MyLinkify;
45import eu.siacs.conversations.ui.util.QuoteHelper;
46import eu.siacs.conversations.worker.ExportBackupWorker;
47import eu.siacs.conversations.xmpp.Jid;
48
49public class UIHelper {
50
51 private static final List<String> LOCATION_QUESTIONS = Arrays.asList(
52 "where are you", //en
53 "where are you now", //en
54 "where are you right now", //en
55 "whats your 20", //en
56 "what is your 20", //en
57 "what's your 20", //en
58 "whats your twenty", //en
59 "what is your twenty", //en
60 "what's your twenty", //en
61 "wo bist du", //de
62 "wo bist du jetzt", //de
63 "wo bist du gerade", //de
64 "wo seid ihr", //de
65 "wo seid ihr jetzt", //de
66 "wo seid ihr gerade", //de
67 "dónde estás", //es
68 "donde estas" //es
69 );
70
71 private static final List<Character> PUNCTIONATION = Arrays.asList('.', ',', '?', '!', ';', ':');
72
73 private static final int SHORT_DATE_FLAGS = DateUtils.FORMAT_SHOW_DATE
74 | DateUtils.FORMAT_NO_YEAR | DateUtils.FORMAT_ABBREV_ALL;
75 private static final int FULL_DATE_FLAGS = DateUtils.FORMAT_SHOW_TIME
76 | DateUtils.FORMAT_ABBREV_ALL | DateUtils.FORMAT_SHOW_DATE;
77
78 public static String readableTimeDifference(Context context, long time) {
79 return readableTimeDifference(context, time, false);
80 }
81
82 public static String readableTimeDifferenceFull(Context context, long time) {
83 return readableTimeDifference(context, time, true);
84 }
85
86 private static String readableTimeDifference(Context context, long time,
87 boolean fullDate) {
88 if (time == 0) {
89 return context.getString(R.string.just_now);
90 }
91 Date date = new Date(time);
92 long difference = (System.currentTimeMillis() - time) / 1000;
93 if (difference < 60) {
94 return context.getString(R.string.just_now);
95 } else if (difference < 60 * 2) {
96 return context.getString(R.string.minute_ago);
97 } else if (difference < 60 * 15) {
98 return context.getString(R.string.minutes_ago, Math.round(difference / 60.0));
99 } else if (today(date)) {
100 java.text.DateFormat df = DateFormat.getTimeFormat(context);
101 return df.format(date);
102 } else {
103 if (fullDate) {
104 return DateUtils.formatDateTime(context, date.getTime(),
105 FULL_DATE_FLAGS);
106 } else {
107 return DateUtils.formatDateTime(context, date.getTime(),
108 SHORT_DATE_FLAGS);
109 }
110 }
111 }
112
113 private static boolean today(Date date) {
114 return sameDay(date, new Date(System.currentTimeMillis()));
115 }
116
117 public static boolean today(long date) {
118 return sameDay(date, System.currentTimeMillis());
119 }
120
121 public static boolean yesterday(long date) {
122 Calendar cal1 = Calendar.getInstance();
123 Calendar cal2 = Calendar.getInstance();
124 cal1.add(Calendar.DAY_OF_YEAR, -1);
125 cal2.setTime(new Date(date));
126 return cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR)
127 && cal1.get(Calendar.DAY_OF_YEAR) == cal2
128 .get(Calendar.DAY_OF_YEAR);
129 }
130
131 public static boolean sameDay(long a, long b) {
132 return sameDay(new Date(a), new Date(b));
133 }
134
135 private static boolean sameDay(Date a, Date b) {
136 Calendar cal1 = Calendar.getInstance();
137 Calendar cal2 = Calendar.getInstance();
138 cal1.setTime(a);
139 cal2.setTime(b);
140 return cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR)
141 && cal1.get(Calendar.DAY_OF_YEAR) == cal2
142 .get(Calendar.DAY_OF_YEAR);
143 }
144
145 public static String lastseen(Context context, boolean active, long time) {
146 long difference = (System.currentTimeMillis() - time) / 1000;
147 if (active) {
148 return context.getString(R.string.online_right_now);
149 } else if (difference < 60) {
150 return context.getString(R.string.last_seen_now);
151 } else if (difference < 60 * 2) {
152 return context.getString(R.string.last_seen_min);
153 } else if (difference < 60 * 60) {
154 return context.getString(R.string.last_seen_mins, Math.round(difference / 60.0));
155 } else if (difference < 60 * 60 * 2) {
156 return context.getString(R.string.last_seen_hour);
157 } else if (difference < 60 * 60 * 24) {
158 return context.getString(R.string.last_seen_hours,
159 Math.round(difference / (60.0 * 60.0)));
160 } else if (difference < 60 * 60 * 48) {
161 return context.getString(R.string.last_seen_day);
162 } else {
163 return context.getString(R.string.last_seen_days,
164 Math.round(difference / (60.0 * 60.0 * 24.0)));
165 }
166 }
167
168 public static int identiconHash(String name) {
169 try {
170 MessageDigest sha1 = MessageDigest.getInstance("SHA-1");
171 byte[] digest = sha1.digest(name.getBytes(StandardCharsets.UTF_8));
172 return Ints.fromByteArray(digest);
173 } catch (Exception e) {
174 return 0;
175 }
176 }
177
178 public static int getColorForName(String name) {
179 return XEP0392Helper.rgbFromNick(name);
180 }
181
182 public static Pair<CharSequence, Boolean> getMessagePreview(final XmppConnectionService context, final Message message) {
183 return getMessagePreview(context, message, 0);
184 }
185
186 public static Pair<CharSequence, Boolean> getMessagePreview(final XmppConnectionService context, final Message message, @ColorInt int textColor) {
187 final Transferable d = message.getTransferable();
188 final boolean moderated = message.getModerated() != null;
189 final boolean muted = message.getStatus() == Message.STATUS_RECEIVED && message.getConversation().getMode() == Conversation.MODE_MULTI && context.isMucUserMuted(new MucOptions.User(null, message.getConversation().getJid(), message.getOccupantId(), null, null));
190 if (muted) {
191 return new Pair<>("Muted", false);
192 } else if (d != null && !moderated) {
193 switch (d.getStatus()) {
194 case Transferable.STATUS_CHECKING:
195 return new Pair<>(context.getString(R.string.checking_x,
196 getFileDescriptionString(context, message)), true);
197 case Transferable.STATUS_DOWNLOADING:
198 return new Pair<>(context.getString(R.string.receiving_x_file,
199 getFileDescriptionString(context, message),
200 d.getProgress()), true);
201 case Transferable.STATUS_OFFER:
202 case Transferable.STATUS_OFFER_CHECK_FILESIZE:
203 return new Pair<>(context.getString(R.string.x_file_offered_for_download,
204 getFileDescriptionString(context, message)), true);
205 case Transferable.STATUS_FAILED:
206 return new Pair<>(context.getString(R.string.file_transmission_failed), true);
207 case Transferable.STATUS_CANCELLED:
208 return new Pair<>(context.getString(R.string.file_transmission_cancelled), true);
209 case Transferable.STATUS_UPLOADING:
210 if (message.getStatus() == Message.STATUS_OFFERED) {
211 return new Pair<>(context.getString(R.string.offering_x_file,
212 getFileDescriptionString(context, message)), true);
213 } else {
214 return new Pair<>(context.getString(R.string.sending_x_file,
215 getFileDescriptionString(context, message)), true);
216 }
217 default:
218 return new Pair<>("", false);
219 }
220 } else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
221 return new Pair<>(context.getString(R.string.pgp_message), true);
222 } else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED) {
223 return new Pair<>(context.getString(R.string.decryption_failed), true);
224 } else if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE) {
225 return new Pair<>(context.getString(R.string.not_encrypted_for_this_device), true);
226 } else if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL_FAILED) {
227 return new Pair<>(context.getString(R.string.omemo_decryption_failed), true);
228 } else if (message.isFileOrImage() && !moderated) {
229 return new Pair<>(getFileDescriptionString(context, message), true);
230 } else if (message.getType() == Message.TYPE_RTP_SESSION) {
231 RtpSessionStatus rtpSessionStatus = RtpSessionStatus.of(message.getBody());
232 final boolean received = message.getStatus() == Message.STATUS_RECEIVED;
233 if (!rtpSessionStatus.successful && received) {
234 return new Pair<>(context.getString(R.string.missed_call), true);
235 } else {
236 return new Pair<>(context.getString(received ? R.string.incoming_call : R.string.outgoing_call), true);
237 }
238 } else {
239 final String body = MessageUtils.filterLtrRtl(message.getBody());
240 if (body.startsWith(Message.ME_COMMAND)) {
241 return new Pair<>(body.replaceAll("^" + Message.ME_COMMAND,
242 UIHelper.getMessageDisplayName(message) + " "), false);
243 } else if (message.isGeoUri()) {
244 return new Pair<>(context.getString(R.string.location), true);
245 } else if (!moderated && (message.treatAsDownloadable() || MessageUtils.unInitiatedButKnownSize(message))) {
246 return new Pair<>(context.getString(R.string.x_file_offered_for_download,
247 getFileDescriptionString(context, message)), true);
248 } else {
249 Drawable fallbackImg = ResourcesCompat.getDrawable(context.getResources(), R.drawable.ic_photo_24dp, null);
250 fallbackImg.setBounds(0, 0, fallbackImg.getIntrinsicWidth(), fallbackImg.getIntrinsicHeight());
251 SpannableStringBuilder styledBody = message.getSpannableBody(null, fallbackImg);
252 if (textColor != 0) {
253 StylingHelper.format(styledBody, 0, styledBody.length() - 1, textColor, false);
254 }
255 MyLinkify.addLinks(styledBody, message.getConversation().getAccount(), message.getConversation().getJid());
256 SpannableStringBuilder builder = new SpannableStringBuilder();
257 for (CharSequence l : CharSequenceUtils.split(styledBody, '\n')) {
258 if (l.length() > 0) {
259 if (l.toString().equals("```")) {
260 continue;
261 }
262 char first = l.charAt(0);
263 if ((!QuoteHelper.isPositionQuoteStart(l, 0))) {
264 CharSequence line = CharSequenceUtils.trim(l);
265 if (line.length() == 0) {
266 continue;
267 }
268 char last = line.charAt(line.length() - 1);
269 if (builder.length() != 0) {
270 builder.append(' ');
271 }
272 builder.append(line);
273 if (!PUNCTIONATION.contains(last)) {
274 break;
275 }
276 }
277 }
278 }
279 if (builder.length() == 0) {
280 builder.append(body.trim());
281 }
282 return new Pair<>(builder, false);
283 }
284 }
285 }
286
287 public static boolean isLastLineQuote(String body) {
288 if (body.endsWith("\n")) {
289 return false;
290 }
291 String[] lines = body.split("\n");
292 if (lines.length == 0) {
293 return false;
294 }
295 String line = lines[lines.length - 1];
296 if (line.isEmpty()) {
297 return false;
298 }
299 char first = line.charAt(0);
300 return first == '>' && isPositionFollowedByQuoteableCharacter(line, 0) || first == '\u00bb';
301 }
302
303 public static CharSequence shorten(CharSequence input) {
304 return input.length() > 256 ? StylingHelper.subSequence(input, 0, 256) : input;
305 }
306
307 public static boolean isPositionPrecededByBodyStart(CharSequence body, int pos){
308 // true if not a single linebreak before current position
309 for (int i = pos - 1; i >= 0; i--){
310 if (body.charAt(i) != ' '){
311 return false;
312 }
313 }
314 return true;
315 }
316
317 public static boolean isPositionPrecededByLineStart(CharSequence body, int pos){
318 if (isPositionPrecededByBodyStart(body, pos)){
319 return true;
320 }
321 return body.charAt(pos - 1) == '\n';
322 }
323
324 public static boolean isPositionFollowedByQuoteableCharacter(CharSequence body, int pos) {
325 return !isPositionFollowedByNumber(body, pos)
326 && !isPositionFollowedByEmoticon(body, pos)
327 && !isPositionFollowedByEquals(body, pos);
328 }
329
330 private static boolean isPositionFollowedByNumber(CharSequence body, int pos) {
331 boolean previousWasNumber = false;
332 for (int i = pos + 1; i < body.length(); i++) {
333 char c = body.charAt(i);
334 if (Character.isDigit(body.charAt(i))) {
335 previousWasNumber = true;
336 } else if (previousWasNumber && (c == '.' || c == ',')) {
337 previousWasNumber = false;
338 } else {
339 return (Character.isWhitespace(c) || c == '%' || c == '+') && previousWasNumber;
340 }
341 }
342 return previousWasNumber;
343 }
344
345 private static boolean isPositionFollowedByEquals(CharSequence body, int pos) {
346 return body.length() > pos + 1 && body.charAt(pos + 1) == '=';
347 }
348
349 private static boolean isPositionFollowedByEmoticon(CharSequence body, int pos) {
350 if (body.length() <= pos + 1) {
351 return false;
352 } else {
353 final char first = body.charAt(pos + 1);
354 return first == ';'
355 || first == ':'
356 || first == '.' // do not quote >.< (but >>.<)
357 || closingBeforeWhitespace(body, pos + 1);
358 }
359 }
360
361 private static boolean closingBeforeWhitespace(CharSequence body, int pos) {
362 for (int i = pos; i < body.length(); ++i) {
363 final char c = body.charAt(i);
364 if (Character.isWhitespace(c)) {
365 return false;
366 } else if (QuoteHelper.isPositionQuoteCharacter(body, pos) || QuoteHelper.isPositionQuoteEndCharacter(body, pos)) {
367 return body.length() == i + 1 || Character.isWhitespace(body.charAt(i + 1));
368 }
369 }
370 return false;
371 }
372
373 public static String getDisplayName(MucOptions.User user) {
374 Contact contact = user.getContact();
375 if (contact != null) {
376 return contact.getDisplayName();
377 } else {
378 final String name = user.getNick();
379 if (name != null) {
380 return name;
381 }
382 final Jid realJid = user.getRealJid();
383 if (realJid != null) {
384 return JidHelper.localPartOrFallback(realJid);
385 }
386 return null;
387 }
388 }
389
390 public static String concatNames(List<MucOptions.User> users) {
391 return concatNames(users, users.size());
392 }
393
394 public static String concatNames(List<MucOptions.User> users, int max) {
395 StringBuilder builder = new StringBuilder();
396 final boolean shortNames = users.size() >= 3;
397 for (int i = 0; i < Math.min(users.size(), max); ++i) {
398 if (builder.length() != 0) {
399 builder.append(", ");
400 }
401 final String name = UIHelper.getDisplayName(users.get(i));
402 if (name != null) {
403 builder.append(shortNames ? name.split("\\s+")[0] : name);
404 }
405 }
406 return builder.toString();
407 }
408
409 public static String getFileDescriptionString(final Context context, final Message message) {
410 final String mime = message.getMimeType();
411 if (Strings.isNullOrEmpty(mime)) {
412 return context.getString(R.string.file);
413 } else if (MimeUtils.AMBIGUOUS_CONTAINER_FORMATS.contains(mime)) {
414 return context.getString(R.string.multimedia_file);
415 } else if (mime.equals("audio/x-m4b")) {
416 return context.getString(R.string.audiobook);
417 } else if (mime.startsWith("audio/")) {
418 return context.getString(R.string.audio);
419 } else if (mime.startsWith("video/")) {
420 return context.getString(R.string.video);
421 } else if (mime.equals("image/gif")) {
422 return context.getString(R.string.gif);
423 } else if (mime.equals("image/svg+xml")) {
424 return context.getString(R.string.vector_graphic);
425 } else if (mime.startsWith("image/") || message.getType() == Message.TYPE_IMAGE) {
426 return context.getString(R.string.image);
427 } else if (mime.contains("pdf")) {
428 return context.getString(R.string.pdf_document);
429 } else if (mime.equals("application/vnd.android.package-archive")) {
430 return context.getString(R.string.apk);
431 } else if (mime.equals(ExportBackupWorker.MIME_TYPE)) {
432 return context.getString(R.string.conversations_backup);
433 } else if (mime.contains("vcard")) {
434 return context.getString(R.string.vcard);
435 } else if (mime.equals("text/x-vcalendar") || mime.equals("text/calendar")) {
436 return context.getString(R.string.event);
437 } else if (mime.equals("application/epub+zip") || mime.equals("application/vnd.amazon.mobi8-ebook")) {
438 return context.getString(R.string.ebook);
439 } else if (mime.equals("application/gpx+xml")) {
440 return context.getString(R.string.gpx_track);
441 } else if (mime.equals("application/xdc+zip")) {
442 return "Widget";
443 } else if (mime.equals("text/plain")) {
444 return context.getString(R.string.plain_text_document);
445 } else {
446 return mime;
447 }
448 }
449
450 public static String getMessageDisplayName(final Message message) {
451 if (message.getModerated() != null) return "moderated";
452
453 final Conversational conversation = message.getConversation();
454 if (message.getStatus() == Message.STATUS_RECEIVED) {
455 final Contact contact = message.getContact();
456 if (conversation.getMode() == Conversation.MODE_MULTI) {
457 if (contact != null) {
458 return contact.getDisplayName();
459 } else {
460 if (conversation instanceof Conversation) {
461 final MucOptions.User user = ((Conversation) conversation).getMucOptions().findUserByFullJid(message.getCounterpart());
462 if (user != null) {
463 final String dname = getDisplayName(user);
464 if (dname != null) return dname;
465 }
466 }
467 return getDisplayedMucCounterpart(message.getCounterpart());
468 }
469 } else {
470 return contact != null ? contact.getDisplayName() : "";
471 }
472 } else {
473 if (conversation instanceof Conversation && conversation.getMode() == Conversation.MODE_MULTI) {
474 return ((Conversation) conversation).getMucOptions().getSelf().getNick();
475 } else {
476 final Account account = conversation.getAccount();
477 final Jid jid = account.getJid();
478 final String displayName = account.getDisplayName();
479 if (Strings.isNullOrEmpty(displayName)) {
480 return jid.getLocal() != null ? jid.getLocal() : jid.getDomain().toString();
481 } else {
482 return displayName;
483 }
484
485 }
486 }
487 }
488
489 public static String getMessageHint(final Context context,final Conversation conversation) {
490 return switch (conversation.getNextEncryption()) {
491 case Message.ENCRYPTION_NONE -> {
492 if (Config.multipleEncryptionChoices()) {
493 yield context.getString(R.string.send_message);
494 } else {
495 yield context.getString(R.string.send_message_to_x, conversation.getName());
496 }
497 }
498 case Message.ENCRYPTION_AXOLOTL -> {
499 final AxolotlService axolotlService = conversation.getAccount().getAxolotlService();
500 if (axolotlService != null && axolotlService.trustedSessionVerified(conversation)) {
501 yield context.getString(R.string.send_omemo_x509_message);
502 } else {
503 yield context.getString(R.string.send_encrypted_message);
504 }
505 }
506 default -> context.getString(R.string.send_encrypted_message);
507 };
508 }
509
510 public static String getDisplayedMucCounterpart(final Jid counterpart) {
511 if (counterpart == null) {
512 return "";
513 } else if (!counterpart.isBareJid()) {
514 return counterpart.getResource().trim();
515 } else {
516 return counterpart.toString().trim();
517 }
518 }
519
520 public static boolean receivedLocationQuestion(final Message message) {
521 if (message == null
522 || message.getStatus() != Message.STATUS_RECEIVED
523 || message.getType() != Message.TYPE_TEXT) {
524 return false;
525 }
526 final String body = Strings.nullToEmpty(message.getBody())
527 .trim()
528 .toLowerCase(Locale.getDefault())
529 .replace("?", "").replace("¿", "");
530 return LOCATION_QUESTIONS.contains(body);
531 }
532
533 public static void setStatus(final TextView textView, Presence.Status status) {
534 final @StringRes int text;
535 final @ColorRes int color =
536 switch (status) {
537 case CHAT -> {
538 text = R.string.presence_chat;
539 yield R.color.green_800;
540 }
541 case ONLINE -> {
542 text = R.string.presence_online;
543 yield R.color.green_800;
544 }
545 case AWAY -> {
546 text = R.string.presence_away;
547 yield R.color.amber_800;
548 }
549 case XA -> {
550 text = R.string.presence_xa;
551 yield R.color.orange_800;
552 }
553 case DND -> {
554 text = R.string.presence_dnd;
555 yield R.color.red_800;
556 }
557 default -> throw new IllegalStateException();
558 };
559 textView.setText(text);
560 textView.setBackgroundTintList(
561 ColorStateList.valueOf(
562 MaterialColors.harmonizeWithPrimary(
563 textView.getContext(),
564 ContextCompat.getColor(textView.getContext(), color))));
565 }
566
567 public static String filesizeToString(long size) {
568 if (size > (1.5 * 1024 * 1024)) {
569 return Math.round(size * 1f / (1024 * 1024)) + " MiB";
570 } else if (size >= 1024) {
571 return Math.round(size * 1f / 1024) + " KiB";
572 } else {
573 return size + " B";
574 }
575 }
576}