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;
 11import androidx.annotation.ColorInt;
 12import androidx.core.content.res.ResourcesCompat;
 13import androidx.annotation.ColorRes;
 14import androidx.annotation.StringRes;
 15import androidx.core.content.ContextCompat;
 16
 17import com.google.common.collect.Lists;
 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 de.gultsch.common.Linkify;
 32import com.google.android.material.color.MaterialColors;
 33import com.google.common.base.Joiner;
 34import com.google.common.base.Splitter;
 35import com.google.common.base.Strings;
 36import com.google.common.collect.Collections2;
 37import eu.siacs.conversations.Config;
 38import eu.siacs.conversations.R;
 39import eu.siacs.conversations.crypto.axolotl.AxolotlService;
 40import eu.siacs.conversations.entities.Account;
 41import eu.siacs.conversations.entities.Contact;
 42import eu.siacs.conversations.entities.Conversation;
 43import eu.siacs.conversations.entities.Conversational;
 44import eu.siacs.conversations.entities.Message;
 45import eu.siacs.conversations.entities.MucOptions;
 46import eu.siacs.conversations.entities.Reaction;
 47import eu.siacs.conversations.entities.RtpSessionStatus;
 48import eu.siacs.conversations.entities.Transferable;
 49import eu.siacs.conversations.services.XmppConnectionService;
 50import eu.siacs.conversations.ui.util.QuoteHelper;
 51import eu.siacs.conversations.worker.ExportBackupWorker;
 52import eu.siacs.conversations.xmpp.Jid;
 53import im.conversations.android.xmpp.model.stanza.Presence;
 54import java.util.Arrays;
 55import java.util.Calendar;
 56import java.util.Date;
 57import java.util.List;
 58import java.util.Locale;
 59
 60public class UIHelper {
 61
 62    private static final List<String> LOCATION_QUESTIONS =
 63            Arrays.asList(
 64                    "where are you", // en
 65                    "where are you now", // en
 66                    "where are you right now", // en
 67                    "whats your 20", // en
 68                    "what is your 20", // en
 69                    "what's your 20", // en
 70                    "whats your twenty", // en
 71                    "what is your twenty", // en
 72                    "what's your twenty", // en
 73                    "wo bist du", // de
 74                    "wo bist du jetzt", // de
 75                    "wo bist du gerade", // de
 76                    "wo seid ihr", // de
 77                    "wo seid ihr jetzt", // de
 78                    "wo seid ihr gerade", // de
 79                    "dónde estás", // es
 80                    "donde estas" // es
 81                    );
 82
 83    private static final List<Character> PUNCTIONATION =
 84            Arrays.asList('.', ',', '?', '!', ';', ':');
 85
 86    private static final int SHORT_DATE_FLAGS =
 87            DateUtils.FORMAT_SHOW_DATE | DateUtils.FORMAT_NO_YEAR | DateUtils.FORMAT_ABBREV_ALL;
 88    private static final int FULL_DATE_FLAGS =
 89            DateUtils.FORMAT_SHOW_TIME | DateUtils.FORMAT_ABBREV_ALL | DateUtils.FORMAT_SHOW_DATE;
 90
 91    public static String readableTimeDifference(Context context, long time) {
 92        return readableTimeDifference(context, time, false);
 93    }
 94
 95    public static String readableTimeDifferenceFull(Context context, long time) {
 96        return readableTimeDifference(context, time, true);
 97    }
 98
 99    private static String readableTimeDifference(Context context, long time, boolean fullDate) {
100        if (time == 0) {
101            return context.getString(R.string.just_now);
102        }
103        Date date = new Date(time);
104        long difference = (System.currentTimeMillis() - time) / 1000;
105        if (difference < 60) {
106            return context.getString(R.string.just_now);
107        } else if (difference < 60 * 2) {
108            return context.getString(R.string.minute_ago);
109        } else if (difference < 60 * 15) {
110            return context.getString(R.string.minutes_ago, Math.round(difference / 60.0));
111        } else if (today(date)) {
112            java.text.DateFormat df = DateFormat.getTimeFormat(context);
113            return df.format(date);
114        } else {
115            if (fullDate) {
116                return DateUtils.formatDateTime(context, date.getTime(), FULL_DATE_FLAGS);
117            } else {
118                return DateUtils.formatDateTime(context, date.getTime(), SHORT_DATE_FLAGS);
119            }
120        }
121    }
122
123    private static boolean today(Date date) {
124        return sameDay(date, new Date(System.currentTimeMillis()));
125    }
126
127    public static boolean today(long date) {
128        return sameDay(date, System.currentTimeMillis());
129    }
130
131    public static boolean yesterday(long date) {
132        Calendar cal1 = Calendar.getInstance();
133        Calendar cal2 = Calendar.getInstance();
134        cal1.add(Calendar.DAY_OF_YEAR, -1);
135        cal2.setTime(new Date(date));
136        return cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR)
137                && cal1.get(Calendar.DAY_OF_YEAR) == cal2.get(Calendar.DAY_OF_YEAR);
138    }
139
140    public static boolean sameDay(long a, long b) {
141        return sameDay(new Date(a), new Date(b));
142    }
143
144    private static boolean sameDay(Date a, Date b) {
145        Calendar cal1 = Calendar.getInstance();
146        Calendar cal2 = Calendar.getInstance();
147        cal1.setTime(a);
148        cal2.setTime(b);
149        return cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR)
150                && cal1.get(Calendar.DAY_OF_YEAR) == cal2.get(Calendar.DAY_OF_YEAR);
151    }
152
153    public static String lastseen(Context context, boolean active, long time) {
154        long difference = (System.currentTimeMillis() - time) / 1000;
155        if (active) {
156            return context.getString(R.string.online_right_now);
157        } else if (difference < 60) {
158            return context.getString(R.string.last_seen_now);
159        } else if (difference < 60 * 2) {
160            return context.getString(R.string.last_seen_min);
161        } else if (difference < 60 * 60) {
162            return context.getString(R.string.last_seen_mins, Math.round(difference / 60.0));
163        } else if (difference < 60 * 60 * 2) {
164            return context.getString(R.string.last_seen_hour);
165        } else if (difference < 60 * 60 * 24) {
166            return context.getString(
167                    R.string.last_seen_hours, Math.round(difference / (60.0 * 60.0)));
168        } else if (difference < 60 * 60 * 48) {
169            return context.getString(R.string.last_seen_day);
170        } else {
171            return context.getString(
172                    R.string.last_seen_days, Math.round(difference / (60.0 * 60.0 * 24.0)));
173        }
174    }
175
176    public static int identiconHash(String name) {
177        try {
178            MessageDigest sha1 = MessageDigest.getInstance("SHA-1");
179            byte[] digest = sha1.digest(name.getBytes(StandardCharsets.UTF_8));
180            return Ints.fromByteArray(digest);
181        } catch (Exception e) {
182            return 0;
183        }
184    }
185
186    public static int getColorForName(final String name) {
187        return XEP0392Helper.rgbFromNick(name);
188    }
189
190    public static Pair<CharSequence, Boolean> getMessagePreview(final XmppConnectionService context, final Message message) {
191        return getMessagePreview(context, message, 0);
192    }
193
194    public static Pair<CharSequence, Boolean> getMessagePreview(
195            final XmppConnectionService context, final Message message, @ColorInt int textColor) {
196        final Transferable d = message.getTransferable();
197        final boolean moderated = message.getModerated() != null;
198        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));
199        if (muted) {
200            return new Pair<>("Muted", false);
201        } else if (d != null && !moderated) {
202            switch (d.getStatus()) {
203                case Transferable.STATUS_CHECKING:
204                    return new Pair<>(
205                            context.getString(
206                                    R.string.checking_x,
207                                    getFileDescriptionString(context, message)),
208                            true);
209                case Transferable.STATUS_DOWNLOADING:
210                    return new Pair<>(
211                            context.getString(
212                                    R.string.receiving_x_file,
213                                    getFileDescriptionString(context, message),
214                                    d.getProgress()),
215                            true);
216                case Transferable.STATUS_OFFER:
217                case Transferable.STATUS_OFFER_CHECK_FILESIZE:
218                    return new Pair<>(
219                            context.getString(
220                                    R.string.x_file_offered_for_download,
221                                    getFileDescriptionString(context, message)),
222                            true);
223                case Transferable.STATUS_FAILED:
224                    return new Pair<>(context.getString(R.string.file_transmission_failed), true);
225                case Transferable.STATUS_CANCELLED:
226                    return new Pair<>(
227                            context.getString(R.string.file_transmission_cancelled), true);
228                case Transferable.STATUS_UPLOADING:
229                    if (message.getStatus() == Message.STATUS_OFFERED) {
230                        return new Pair<>(
231                                context.getString(
232                                        R.string.offering_x_file,
233                                        getFileDescriptionString(context, message)),
234                                true);
235                    } else {
236                        return new Pair<>(
237                                context.getString(
238                                        R.string.sending_x_file,
239                                        getFileDescriptionString(context, message)),
240                                true);
241                    }
242                default:
243                    return new Pair<>("", false);
244            }
245        } else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
246            return new Pair<>(context.getString(R.string.pgp_message), true);
247        } else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED) {
248            return new Pair<>(context.getString(R.string.decryption_failed), true);
249        } else if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE) {
250            return new Pair<>(context.getString(R.string.not_encrypted_for_this_device), true);
251        } else if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL_FAILED) {
252            return new Pair<>(context.getString(R.string.omemo_decryption_failed), true);
253        } else if (message.isFileOrImage() && !moderated) {
254            return new Pair<>(getFileDescriptionString(context, message), true);
255        } else if (message.getType() == Message.TYPE_RTP_SESSION) {
256            RtpSessionStatus rtpSessionStatus = RtpSessionStatus.of(message.getBody());
257            final boolean received = message.getStatus() == Message.STATUS_RECEIVED;
258            if (!rtpSessionStatus.successful && received) {
259                return new Pair<>(context.getString(R.string.missed_call), true);
260            } else {
261                return new Pair<>(
262                        context.getString(
263                                received ? R.string.incoming_call : R.string.outgoing_call),
264                        true);
265            }
266        } else {
267            final String body = MessageUtils.filterLtrRtl(message.getBody());
268            if (body.startsWith(Message.ME_COMMAND)) {
269                return new Pair<>(
270                        body.replaceAll(
271                                "^" + Message.ME_COMMAND,
272                                UIHelper.getMessageDisplayName(message) + " "),
273                        false);
274            } else if (message.isGeoUri()) {
275                return new Pair<>(context.getString(R.string.location), true);
276            } else if (!moderated && (message.treatAsDownloadable()
277                    || MessageUtils.unInitiatedButKnownSize(message))) {
278                return new Pair<>(
279                        context.getString(
280                                R.string.x_file_offered_for_download,
281                                getFileDescriptionString(context, message)),
282                        true);
283            } else {
284                Drawable fallbackImg = ResourcesCompat.getDrawable(context.getResources(), R.drawable.ic_photo_24dp, null);
285                fallbackImg.setBounds(0, 0, fallbackImg.getIntrinsicWidth(), fallbackImg.getIntrinsicHeight());
286                SpannableStringBuilder styledBody = message.getSpannableBody(null, fallbackImg);
287                final var processMarkup = styledBody.getSpans(0, body.length(), Message.PlainTextSpan.class).length > 0;
288                if (textColor != 0 && processMarkup) {
289                    StylingHelper.format(styledBody, 0, styledBody.length() - 1, textColor, false);
290                }
291                Linkify.addLinks(styledBody, message.getConversation().getAccount(), message.getConversation().getJid());
292
293                for (final android.text.style.QuoteSpan quote : Lists.reverse(Lists.newArrayList(styledBody.getSpans(0, styledBody.length(), android.text.style.QuoteSpan.class)))) {
294                    int start = styledBody.getSpanStart(quote);
295                    int end = styledBody.getSpanEnd(quote);
296                    if (start < 0 || end < 0 || (start == 0 && end == styledBody.length())) continue;
297                    styledBody.delete(start, end);
298                    styledBody.removeSpan(quote);
299                }
300                if (!processMarkup) return new Pair<>(styledBody, false);
301
302                SpannableStringBuilder builder = new SpannableStringBuilder();
303                for (CharSequence l : CharSequenceUtils.split(styledBody, '\n')) {
304                    if (l.length() > 0) {
305                        if (l.toString().equals("```")) {
306                            continue;
307                        }
308                        char first = l.charAt(0);
309                        if ((!QuoteHelper.isPositionQuoteStart(l, 0))) {
310                            CharSequence line = CharSequenceUtils.trim(l);
311                            if (line.length() == 0) {
312                                continue;
313                            }
314                            char last = line.charAt(line.length() - 1);
315                            if (builder.length() != 0) {
316                                builder.append(' ');
317                            }
318                            builder.append(line);
319                            if (!PUNCTIONATION.contains(last)) {
320                                break;
321                            }
322                        }
323                    }
324                }
325                if (builder.length() == 0) {
326                    builder.append(body.trim());
327                }
328                return new Pair<>(builder, false);
329            }
330        }
331    }
332
333    private static CharSequence getBodyOmitQuotesAndBlocks(final String body) {
334        final var parts = Splitter.on('\n').trimResults().omitEmptyStrings().splitToList(body);
335        final var filtered =
336                Collections2.filter(
337                        parts,
338                        line ->
339                                !QuoteHelper.isPositionQuoteCharacter(line, 0)
340                                        && !line.equals("```"));
341        if (filtered.isEmpty()) {
342            return body;
343        }
344        return Joiner.on(' ').join(filtered);
345    }
346
347    private static CharSequence getStyledBodyOneLine(final String body, final int textColor) {
348        final var styledBody = new SpannableStringBuilder(body);
349        StylingHelper.format(styledBody, 0, styledBody.length() - 1, textColor, false);
350        final var builder = new SpannableStringBuilder();
351        for (final var l : CharSequenceUtils.split(styledBody, '\n')) {
352            if (l.length() == 0) {
353                continue;
354            }
355            if (l.toString().equals("```")) {
356                continue;
357            }
358            if (QuoteHelper.isPositionQuoteCharacter(l, 0)) {
359                continue;
360            }
361            final var trimmed = CharSequenceUtils.trim(l);
362            if (trimmed.length() == 0) {
363                continue;
364            }
365            char last = trimmed.charAt(trimmed.length() - 1);
366            if (builder.length() != 0) {
367                builder.append(' ');
368            }
369            builder.append(trimmed);
370            if (!PUNCTIONATION.contains(last)) {
371                break;
372            }
373        }
374        if (builder.length() == 0) {
375            return body.trim();
376        } else {
377            return builder;
378        }
379    }
380
381    public static boolean isLastLineQuote(String body) {
382        if (body.endsWith("\n")) {
383            return false;
384        }
385        String[] lines = body.split("\n");
386        if (lines.length == 0) {
387            return false;
388        }
389        String line = lines[lines.length - 1];
390        if (line.isEmpty()) {
391            return false;
392        }
393        char first = line.charAt(0);
394        return first == '>' && isPositionFollowedByQuoteableCharacter(line, 0) || first == '\u00bb';
395    }
396
397    public static CharSequence shorten(CharSequence input) {
398        return input.length() > 256 ? StylingHelper.subSequence(input, 0, 256) : input;
399    }
400
401    public static boolean isPositionPrecededByBodyStart(CharSequence body, int pos) {
402        // true if not a single linebreak before current position
403        for (int i = pos - 1; i >= 0; i--) {
404            if (body.charAt(i) != ' ') {
405                return false;
406            }
407        }
408        return true;
409    }
410
411    public static boolean isPositionPrecededByLineStart(CharSequence body, int pos) {
412        if (isPositionPrecededByBodyStart(body, pos)) {
413            return true;
414        }
415        return body.charAt(pos - 1) == '\n';
416    }
417
418    public static boolean isPositionFollowedByQuoteableCharacter(CharSequence body, int pos) {
419        return !isPositionFollowedByNumber(body, pos)
420                && !isPositionFollowedByEmoticon(body, pos)
421                && !isPositionFollowedByEquals(body, pos);
422    }
423
424    private static boolean isPositionFollowedByNumber(CharSequence body, int pos) {
425        boolean previousWasNumber = false;
426        for (int i = pos + 1; i < body.length(); i++) {
427            char c = body.charAt(i);
428            if (Character.isDigit(body.charAt(i))) {
429                previousWasNumber = true;
430            } else if (previousWasNumber && (c == '.' || c == ',')) {
431                previousWasNumber = false;
432            } else {
433                return (Character.isWhitespace(c) || c == '%' || c == '+') && previousWasNumber;
434            }
435        }
436        return previousWasNumber;
437    }
438
439    private static boolean isPositionFollowedByEquals(CharSequence body, int pos) {
440        return body.length() > pos + 1 && body.charAt(pos + 1) == '=';
441    }
442
443    private static boolean isPositionFollowedByEmoticon(CharSequence body, int pos) {
444        if (body.length() <= pos + 1) {
445            return false;
446        } else {
447            final char first = body.charAt(pos + 1);
448            return first == ';'
449                    || first == ':'
450                    || first == '.' // do not quote >.< (but >>.<)
451                    || closingBeforeWhitespace(body, pos + 1);
452        }
453    }
454
455    private static boolean closingBeforeWhitespace(CharSequence body, int pos) {
456        for (int i = pos; i < body.length(); ++i) {
457            final char c = body.charAt(i);
458            if (Character.isWhitespace(c)) {
459                return false;
460            } else if (QuoteHelper.isPositionQuoteCharacter(body, pos)
461                    || QuoteHelper.isPositionQuoteEndCharacter(body, pos)) {
462                return body.length() == i + 1 || Character.isWhitespace(body.charAt(i + 1));
463            }
464        }
465        return false;
466    }
467
468    public static String getDisplayName(MucOptions.User user) {
469        Contact contact = user.getContact();
470        if (contact != null) {
471            return contact.getDisplayName();
472        } else {
473            final String name = user.getNick();
474            if (name != null) {
475                return name;
476            }
477            final Jid realJid = user.getRealJid();
478            if (realJid != null) {
479                return JidHelper.localPartOrFallback(realJid);
480            }
481            return null;
482        }
483    }
484
485    public static String concatNames(List<MucOptions.User> users) {
486        return concatNames(users, users.size());
487    }
488
489    public static String concatNames(List<MucOptions.User> users, int max) {
490        StringBuilder builder = new StringBuilder();
491        final boolean shortNames = users.size() >= 3;
492        for (int i = 0; i < Math.min(users.size(), max); ++i) {
493            if (builder.length() != 0) {
494                builder.append(", ");
495            }
496            final String name = UIHelper.getDisplayName(users.get(i));
497            if (name != null) {
498                builder.append(shortNames ? name.split("\\s+")[0] : name);
499            }
500        }
501        return builder.toString();
502    }
503
504    public static String getFileDescriptionString(final Context context, final Message message) {
505        final String mime = message.getMimeType();
506        if (Strings.isNullOrEmpty(mime)) {
507            return context.getString(R.string.file);
508        } else if (MimeUtils.AMBIGUOUS_CONTAINER_FORMATS.contains(mime)) {
509            return context.getString(R.string.multimedia_file);
510        } else if (mime.equals("audio/x-m4b")) {
511            return context.getString(R.string.audiobook);
512        } else if (mime.startsWith("audio/")) {
513            return context.getString(R.string.audio);
514        } else if (mime.startsWith("video/")) {
515            return context.getString(R.string.video);
516        } else if (mime.equals("image/gif")) {
517            return context.getString(R.string.gif);
518        } else if (mime.equals("image/svg+xml")) {
519            return context.getString(R.string.vector_graphic);
520        } else if (mime.startsWith("image/") || message.getType() == Message.TYPE_IMAGE) {
521            return context.getString(R.string.image);
522        } else if (mime.contains("pdf")) {
523            return context.getString(R.string.pdf_document);
524        } else if (MimeUtils.WORD_DOCUMENT_MIMES.contains(mime)) {
525            return context.getString(R.string.word_document);
526        } else if (mime.equals("application/vnd.android.package-archive")) {
527            return context.getString(R.string.apk);
528        } else if (mime.equals(ExportBackupWorker.MIME_TYPE)) {
529            return context.getString(R.string.conversations_backup);
530        } else if (mime.contains("vcard")) {
531            return context.getString(R.string.vcard);
532        } else if (mime.equals("text/x-vcalendar") || mime.equals("text/calendar")) {
533            return context.getString(R.string.event);
534        } else if (mime.equals("application/epub+zip")
535                || mime.equals("application/vnd.amazon.mobi8-ebook")) {
536            return context.getString(R.string.ebook);
537        } else if (mime.equals("application/gpx+xml")) {
538            return context.getString(R.string.gpx_track);
539        } else if (mime.equals("application/webxdc+zip")) {
540            final var name = message.getFileParams().getName();
541            if (name != null && name.length() < 20) {
542                return name;
543            } else {
544                return "Widget";
545            }
546        } else if (mime.equals("text/plain")) {
547            return context.getString(R.string.plain_text_document);
548        } else {
549            return mime;
550        }
551    }
552
553    public static String getMessageDisplayName(final Message message) {
554        if (message.getModerated() != null) return "moderated";
555
556        final Conversational conversation = message.getConversation();
557        if (message.getStatus() == Message.STATUS_RECEIVED) {
558            final Contact contact = message.getContact();
559            if (conversation.getMode() == Conversation.MODE_MULTI) {
560                if (contact != null) {
561                    return contact.getDisplayName();
562                } else {
563                    if (conversation instanceof Conversation) {
564                        final MucOptions.User user = ((Conversation) conversation).getMucOptions().findUserByFullJid(message.getCounterpart());
565                        if (user != null) {
566                            final String dname = getDisplayName(user);
567                            if (dname != null) return dname;
568                        }
569                    }
570                    return getDisplayedMucCounterpart(message.getCounterpart());
571                }
572            } else {
573                return contact != null ? contact.getDisplayName() : "";
574            }
575        } else {
576            if (conversation instanceof Conversation
577                    && conversation.getMode() == Conversation.MODE_MULTI) {
578                return ((Conversation) conversation).getMucOptions().getSelf().getNick();
579            } else {
580                final Account account = conversation.getAccount();
581                final Jid jid = account.getJid();
582                final String displayName = account.getDisplayName();
583                if (Strings.isNullOrEmpty(displayName)) {
584                    return jid.getLocal() != null ? jid.getLocal() : jid.getDomain().toString();
585                } else {
586                    return displayName;
587                }
588            }
589        }
590    }
591
592    public static String getDisplayName(final Conversational conversation, final Reaction reaction) {
593        if (conversation.getMode() == Conversation.MODE_MULTI) {
594            if (conversation instanceof Conversation) {
595                MucOptions.User user = ((Conversation) conversation).getMucOptions().findUserByFullJid(reaction.trueJid);
596                if (user == null) user = ((Conversation) conversation).getMucOptions().findUserByOccupantId(reaction.occupantId, reaction.from);
597                if (user != null) {
598                    final String dname = getDisplayName(user);
599                    if (dname != null) return dname;
600                }
601            }
602            return getDisplayedMucCounterpart(reaction.from);
603        }
604
605        return conversation == null ? reaction.from.asBareJid().toString() : conversation.getAccount().getRoster().getContact(reaction.from).getDisplayName();
606    }
607
608    public static String getMessageHint(final Context context, final Conversation conversation) {
609        return switch (conversation.getNextEncryption()) {
610            case Message.ENCRYPTION_NONE -> {
611                if (Config.multipleEncryptionChoices()) {
612                    yield context.getString(R.string.send_message);
613                } else {
614                    yield context.getString(R.string.send_message_to_x, conversation.getName());
615                }
616            }
617            case Message.ENCRYPTION_AXOLOTL -> {
618                final AxolotlService axolotlService = conversation.getAccount().getAxolotlService();
619                if (axolotlService != null && axolotlService.trustedSessionVerified(conversation)) {
620                    yield context.getString(R.string.send_omemo_x509_message);
621                } else {
622                    yield context.getString(R.string.send_encrypted_message);
623                }
624            }
625            default -> context.getString(R.string.send_encrypted_message);
626        };
627    }
628
629    public static String getDisplayedMucCounterpart(final Jid counterpart) {
630        if (counterpart == null) {
631            return "";
632        } else if (!counterpart.isBareJid()) {
633            return counterpart.getResource().trim();
634        } else {
635            return counterpart.toString().trim();
636        }
637    }
638
639    public static boolean receivedLocationQuestion(final Message message) {
640        if (message == null
641                || message.getStatus() != Message.STATUS_RECEIVED
642                || message.getType() != Message.TYPE_TEXT) {
643            return false;
644        }
645        final String body =
646                Strings.nullToEmpty(message.getBody())
647                        .trim()
648                        .toLowerCase(Locale.getDefault())
649                        .replace("?", "")
650                        .replace("¿", "");
651        return LOCATION_QUESTIONS.contains(body);
652    }
653
654    public static void setStatus(final TextView textView, Presence.Availability status) {
655        final @StringRes int text;
656        final @ColorRes int color =
657                switch (status) {
658                    case CHAT -> {
659                        text = R.string.presence_chat;
660                        yield R.color.green_800;
661                    }
662                    case ONLINE -> {
663                        text = R.string.presence_online;
664                        yield R.color.green_800;
665                    }
666                    case AWAY -> {
667                        text = R.string.presence_away;
668                        yield R.color.amber_800;
669                    }
670                    case XA -> {
671                        text = R.string.presence_xa;
672                        yield R.color.orange_800;
673                    }
674                    case DND -> {
675                        text = R.string.presence_dnd;
676                        yield R.color.red_800;
677                    }
678                    default -> throw new IllegalStateException();
679                };
680        textView.setText(text);
681        textView.setBackgroundTintList(
682                ColorStateList.valueOf(
683                        MaterialColors.harmonizeWithPrimary(
684                                textView.getContext(),
685                                ContextCompat.getColor(textView.getContext(), color))));
686    }
687
688    public static String filesizeToString(long size) {
689        if (size > (1.5 * 1024 * 1024)) {
690            return Math.round(size * 1f / (1024 * 1024)) + " MiB";
691        } else if (size >= 1024) {
692            return Math.round(size * 1f / 1024) + " KiB";
693        } else {
694            return size + " B";
695        }
696    }
697}