1package eu.siacs.conversations.utils;
2
3import android.content.Context;
4import androidx.annotation.ColorInt;
5import android.text.SpannableStringBuilder;
6import android.text.format.DateFormat;
7import android.text.format.DateUtils;
8import android.util.Pair;
9
10import java.math.BigInteger;
11import java.security.MessageDigest;
12import java.util.Arrays;
13import java.util.Calendar;
14import java.util.Date;
15import java.util.List;
16import java.util.Locale;
17
18import eu.siacs.conversations.Config;
19import eu.siacs.conversations.R;
20import eu.siacs.conversations.crypto.axolotl.AxolotlService;
21import eu.siacs.conversations.entities.Contact;
22import eu.siacs.conversations.entities.Conversation;
23import eu.siacs.conversations.entities.Conversational;
24import eu.siacs.conversations.entities.ListItem;
25import eu.siacs.conversations.entities.Message;
26import eu.siacs.conversations.entities.MucOptions;
27import eu.siacs.conversations.entities.Presence;
28import eu.siacs.conversations.entities.RtpSessionStatus;
29import eu.siacs.conversations.entities.Transferable;
30import eu.siacs.conversations.services.ExportBackupService;
31import eu.siacs.conversations.xmpp.Jid;
32
33public class UIHelper {
34
35 private static int[] UNSAFE_COLORS = {
36 0xFFF44336, //red 500
37 0xFFE53935, //red 600
38 0xFFD32F2F, //red 700
39 0xFFC62828, //red 800
40
41 0xFFEF6C00, //orange 800
42
43 0xFFF4511E, //deep orange 600
44 0xFFE64A19, //deep orange 700
45 0xFFD84315, //deep orange 800,
46 };
47
48 private static int[] SAFE_COLORS = {
49 0xFFE91E63, //pink 500
50 0xFFD81B60, //pink 600
51 0xFFC2185B, //pink 700
52 0xFFAD1457, //pink 800
53
54 0xFF9C27B0, //purple 500
55 0xFF8E24AA, //purple 600
56 0xFF7B1FA2, //purple 700
57 0xFF6A1B9A, //purple 800
58
59 0xFF673AB7, //deep purple 500,
60 0xFF5E35B1, //deep purple 600
61 0xFF512DA8, //deep purple 700
62 0xFF4527A0, //deep purple 800,
63
64 0xFF3F51B5, //indigo 500,
65 0xFF3949AB,//indigo 600
66 0xFF303F9F,//indigo 700
67 0xFF283593, //indigo 800
68
69 0xFF2196F3, //blue 500
70 0xFF1E88E5, //blue 600
71 0xFF1976D2, //blue 700
72 0xFF1565C0, //blue 800
73
74 0xFF03A9F4, //light blue 500
75 0xFF039BE5, //light blue 600
76 0xFF0288D1, //light blue 700
77 0xFF0277BD, //light blue 800
78
79 0xFF00BCD4, //cyan 500
80 0xFF00ACC1, //cyan 600
81 0xFF0097A7, //cyan 700
82 0xFF00838F, //cyan 800
83
84 0xFF009688, //teal 500,
85 0xFF00897B, //teal 600
86 0xFF00796B, //teal 700
87 0xFF00695C, //teal 800,
88
89 //0xFF558B2F, //light green 800
90
91 //0xFFC0CA33, //lime 600
92 0xFF9E9D24, //lime 800
93
94 0xFF795548, //brown 500,
95 //0xFF4E342E, //brown 800
96 0xFF607D8B, //blue grey 500,
97 //0xFF37474F //blue grey 800
98 };
99
100 private static final int[] COLORS;
101
102 static {
103 COLORS = Arrays.copyOf(SAFE_COLORS, SAFE_COLORS.length + UNSAFE_COLORS.length);
104 System.arraycopy(UNSAFE_COLORS, 0, COLORS, SAFE_COLORS.length, UNSAFE_COLORS.length);
105 }
106
107 private static final List<String> LOCATION_QUESTIONS = Arrays.asList(
108 "where are you", //en
109 "where are you now", //en
110 "where are you right now", //en
111 "whats your 20", //en
112 "what is your 20", //en
113 "what's your 20", //en
114 "whats your twenty", //en
115 "what is your twenty", //en
116 "what's your twenty", //en
117 "wo bist du", //de
118 "wo bist du jetzt", //de
119 "wo bist du gerade", //de
120 "wo seid ihr", //de
121 "wo seid ihr jetzt", //de
122 "wo seid ihr gerade", //de
123 "dónde estás", //es
124 "donde estas" //es
125 );
126
127 private static final List<Character> PUNCTIONATION = Arrays.asList('.', ',', '?', '!', ';', ':');
128
129 private static final int SHORT_DATE_FLAGS = DateUtils.FORMAT_SHOW_DATE
130 | DateUtils.FORMAT_NO_YEAR | DateUtils.FORMAT_ABBREV_ALL;
131 private static final int FULL_DATE_FLAGS = DateUtils.FORMAT_SHOW_TIME
132 | DateUtils.FORMAT_ABBREV_ALL | DateUtils.FORMAT_SHOW_DATE;
133
134 public static String readableTimeDifference(Context context, long time) {
135 return readableTimeDifference(context, time, false);
136 }
137
138 public static String readableTimeDifferenceFull(Context context, long time) {
139 return readableTimeDifference(context, time, true);
140 }
141
142 private static String readableTimeDifference(Context context, long time,
143 boolean fullDate) {
144 if (time == 0) {
145 return context.getString(R.string.just_now);
146 }
147 Date date = new Date(time);
148 long difference = (System.currentTimeMillis() - time) / 1000;
149 if (difference < 60) {
150 return context.getString(R.string.just_now);
151 } else if (difference < 60 * 2) {
152 return context.getString(R.string.minute_ago);
153 } else if (difference < 60 * 15) {
154 return context.getString(R.string.minutes_ago, Math.round(difference / 60.0));
155 } else if (today(date)) {
156 java.text.DateFormat df = DateFormat.getTimeFormat(context);
157 return df.format(date);
158 } else {
159 if (fullDate) {
160 return DateUtils.formatDateTime(context, date.getTime(),
161 FULL_DATE_FLAGS);
162 } else {
163 return DateUtils.formatDateTime(context, date.getTime(),
164 SHORT_DATE_FLAGS);
165 }
166 }
167 }
168
169 private static boolean today(Date date) {
170 return sameDay(date, new Date(System.currentTimeMillis()));
171 }
172
173 public static boolean today(long date) {
174 return sameDay(date, System.currentTimeMillis());
175 }
176
177 public static boolean yesterday(long date) {
178 Calendar cal1 = Calendar.getInstance();
179 Calendar cal2 = Calendar.getInstance();
180 cal1.add(Calendar.DAY_OF_YEAR, -1);
181 cal2.setTime(new Date(date));
182 return cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR)
183 && cal1.get(Calendar.DAY_OF_YEAR) == cal2
184 .get(Calendar.DAY_OF_YEAR);
185 }
186
187 public static boolean sameDay(long a, long b) {
188 return sameDay(new Date(a), new Date(b));
189 }
190
191 private static boolean sameDay(Date a, Date b) {
192 Calendar cal1 = Calendar.getInstance();
193 Calendar cal2 = Calendar.getInstance();
194 cal1.setTime(a);
195 cal2.setTime(b);
196 return cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR)
197 && cal1.get(Calendar.DAY_OF_YEAR) == cal2
198 .get(Calendar.DAY_OF_YEAR);
199 }
200
201 public static String lastseen(Context context, boolean active, long time) {
202 long difference = (System.currentTimeMillis() - time) / 1000;
203 if (active) {
204 return context.getString(R.string.online_right_now);
205 } else if (difference < 60) {
206 return context.getString(R.string.last_seen_now);
207 } else if (difference < 60 * 2) {
208 return context.getString(R.string.last_seen_min);
209 } else if (difference < 60 * 60) {
210 return context.getString(R.string.last_seen_mins, Math.round(difference / 60.0));
211 } else if (difference < 60 * 60 * 2) {
212 return context.getString(R.string.last_seen_hour);
213 } else if (difference < 60 * 60 * 24) {
214 return context.getString(R.string.last_seen_hours,
215 Math.round(difference / (60.0 * 60.0)));
216 } else if (difference < 60 * 60 * 48) {
217 return context.getString(R.string.last_seen_day);
218 } else {
219 return context.getString(R.string.last_seen_days,
220 Math.round(difference / (60.0 * 60.0 * 24.0)));
221 }
222 }
223
224 public static int getColorForName(String name) {
225 return getColorForName(name, false);
226 }
227
228 public static int getColorForName(String name, boolean safe) {
229 if (Config.XEP_0392) {
230 return XEP0392Helper.rgbFromNick(name);
231 }
232 if (name == null || name.isEmpty()) {
233 return 0xFF202020;
234 }
235 if (safe) {
236 return SAFE_COLORS[(int) (getLongForName(name) % SAFE_COLORS.length)];
237 } else {
238 return COLORS[(int) (getLongForName(name) % COLORS.length)];
239 }
240 }
241
242 private static long getLongForName(String name) {
243 try {
244 final MessageDigest messageDigest = MessageDigest.getInstance("MD5");
245 return Math.abs(new BigInteger(messageDigest.digest(name.getBytes())).longValue());
246 } catch (Exception e) {
247 return 0;
248 }
249 }
250
251 public static Pair<CharSequence, Boolean> getMessagePreview(final Context context, final Message message) {
252 return getMessagePreview(context, message, 0);
253 }
254
255 public static Pair<CharSequence, Boolean> getMessagePreview(final Context context, final Message message, @ColorInt int textColor) {
256 final Transferable d = message.getTransferable();
257 if (d != null) {
258 switch (d.getStatus()) {
259 case Transferable.STATUS_CHECKING:
260 return new Pair<>(context.getString(R.string.checking_x,
261 getFileDescriptionString(context, message)), true);
262 case Transferable.STATUS_DOWNLOADING:
263 return new Pair<>(context.getString(R.string.receiving_x_file,
264 getFileDescriptionString(context, message),
265 d.getProgress()), true);
266 case Transferable.STATUS_OFFER:
267 case Transferable.STATUS_OFFER_CHECK_FILESIZE:
268 return new Pair<>(context.getString(R.string.x_file_offered_for_download,
269 getFileDescriptionString(context, message)), true);
270 case Transferable.STATUS_FAILED:
271 return new Pair<>(context.getString(R.string.file_transmission_failed), true);
272 case Transferable.STATUS_CANCELLED:
273 return new Pair<>(context.getString(R.string.file_transmission_cancelled), true);
274 case Transferable.STATUS_UPLOADING:
275 if (message.getStatus() == Message.STATUS_OFFERED) {
276 return new Pair<>(context.getString(R.string.offering_x_file,
277 getFileDescriptionString(context, message)), true);
278 } else {
279 return new Pair<>(context.getString(R.string.sending_x_file,
280 getFileDescriptionString(context, message)), true);
281 }
282 default:
283 return new Pair<>("", false);
284 }
285 } else if (message.isFileOrImage() && message.isDeleted()) {
286 return new Pair<>(context.getString(R.string.file_deleted), true);
287 } else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
288 return new Pair<>(context.getString(R.string.pgp_message), true);
289 } else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED) {
290 return new Pair<>(context.getString(R.string.decryption_failed), true);
291 } else if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE) {
292 return new Pair<>(context.getString(R.string.not_encrypted_for_this_device), true);
293 } else if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL_FAILED) {
294 return new Pair<>(context.getString(R.string.omemo_decryption_failed), true);
295 } else if (message.isFileOrImage()) {
296 return new Pair<>(getFileDescriptionString(context, message), true);
297 } else if (message.getType() == Message.TYPE_RTP_SESSION) {
298 RtpSessionStatus rtpSessionStatus = RtpSessionStatus.of(message.getBody());
299 final boolean received = message.getStatus() == Message.STATUS_RECEIVED;
300 if (!rtpSessionStatus.successful && received) {
301 return new Pair<>(context.getString(R.string.missed_call), true);
302 } else {
303 return new Pair<>(context.getString(received ? R.string.incoming_call : R.string.outgoing_call), true);
304 }
305 } else {
306 final String body = MessageUtils.filterLtrRtl(message.getBody());
307 if (body.startsWith(Message.ME_COMMAND)) {
308 return new Pair<>(body.replaceAll("^" + Message.ME_COMMAND,
309 UIHelper.getMessageDisplayName(message) + " "), false);
310 } else if (message.isGeoUri()) {
311 return new Pair<>(context.getString(R.string.location), true);
312 } else if (message.treatAsDownloadable() || MessageUtils.unInitiatedButKnownSize(message)) {
313 return new Pair<>(context.getString(R.string.x_file_offered_for_download,
314 getFileDescriptionString(context, message)), true);
315 } else {
316 SpannableStringBuilder styledBody = new SpannableStringBuilder(body);
317 if (textColor != 0) {
318 StylingHelper.format(styledBody, 0, styledBody.length() - 1, textColor);
319 }
320 SpannableStringBuilder builder = new SpannableStringBuilder();
321 for (CharSequence l : CharSequenceUtils.split(styledBody, '\n')) {
322 if (l.length() > 0) {
323 if (l.toString().equals("```")) {
324 continue;
325 }
326 char first = l.charAt(0);
327 if ((first != '>' || !isPositionFollowedByQuoteableCharacter(l, 0)) && first != '\u00bb') {
328 CharSequence line = CharSequenceUtils.trim(l);
329 if (line.length() == 0) {
330 continue;
331 }
332 char last = line.charAt(line.length() - 1);
333 if (builder.length() != 0) {
334 builder.append(' ');
335 }
336 builder.append(line);
337 if (!PUNCTIONATION.contains(last)) {
338 break;
339 }
340 }
341 }
342 }
343 if (builder.length() == 0) {
344 builder.append(body.trim());
345 }
346 return new Pair<>(builder, false);
347 }
348 }
349 }
350
351 public static boolean isLastLineQuote(String body) {
352 if (body.endsWith("\n")) {
353 return false;
354 }
355 String[] lines = body.split("\n");
356 if (lines.length == 0) {
357 return false;
358 }
359 String line = lines[lines.length - 1];
360 if (line.isEmpty()) {
361 return false;
362 }
363 char first = line.charAt(0);
364 return first == '>' && isPositionFollowedByQuoteableCharacter(line, 0) || first == '\u00bb';
365 }
366
367 public static CharSequence shorten(CharSequence input) {
368 return input.length() > 256 ? StylingHelper.subSequence(input, 0, 256) : input;
369 }
370
371 public static boolean isPositionFollowedByQuoteableCharacter(CharSequence body, int pos) {
372 return !isPositionFollowedByNumber(body, pos)
373 && !isPositionFollowedByEmoticon(body, pos)
374 && !isPositionFollowedByEquals(body, pos);
375 }
376
377 private static boolean isPositionFollowedByNumber(CharSequence body, int pos) {
378 boolean previousWasNumber = false;
379 for (int i = pos + 1; i < body.length(); i++) {
380 char c = body.charAt(i);
381 if (Character.isDigit(body.charAt(i))) {
382 previousWasNumber = true;
383 } else if (previousWasNumber && (c == '.' || c == ',')) {
384 previousWasNumber = false;
385 } else {
386 return (Character.isWhitespace(c) || c == '%' || c == '+') && previousWasNumber;
387 }
388 }
389 return previousWasNumber;
390 }
391
392 private static boolean isPositionFollowedByEquals(CharSequence body, int pos) {
393 return body.length() > pos + 1 && body.charAt(pos + 1) == '=';
394 }
395
396 private static boolean isPositionFollowedByEmoticon(CharSequence body, int pos) {
397 if (body.length() <= pos + 1) {
398 return false;
399 } else {
400 final char first = body.charAt(pos + 1);
401 return first == ';'
402 || first == ':'
403 || closingBeforeWhitespace(body, pos + 1);
404 }
405 }
406
407 private static boolean closingBeforeWhitespace(CharSequence body, int pos) {
408 for (int i = pos; i < body.length(); ++i) {
409 final char c = body.charAt(i);
410 if (Character.isWhitespace(c)) {
411 return false;
412 } else if (c == '<' || c == '>') {
413 return body.length() == i + 1 || Character.isWhitespace(body.charAt(i + 1));
414 }
415 }
416 return false;
417 }
418
419 public static boolean isPositionFollowedByQuote(CharSequence body, int pos) {
420 if (body.length() <= pos + 1 || Character.isWhitespace(body.charAt(pos + 1))) {
421 return false;
422 }
423 boolean previousWasWhitespace = false;
424 for (int i = pos + 1; i < body.length(); i++) {
425 char c = body.charAt(i);
426 if (c == '\n' || c == '»') {
427 return false;
428 } else if (c == '«' && !previousWasWhitespace) {
429 return true;
430 } else {
431 previousWasWhitespace = Character.isWhitespace(c);
432 }
433 }
434 return false;
435 }
436
437 public static String getDisplayName(MucOptions.User user) {
438 Contact contact = user.getContact();
439 if (contact != null) {
440 return contact.getDisplayName();
441 } else {
442 final String name = user.getName();
443 if (name != null) {
444 return name;
445 }
446 final Jid realJid = user.getRealJid();
447 if (realJid != null) {
448 return JidHelper.localPartOrFallback(realJid);
449 }
450 return null;
451 }
452 }
453
454 public static String concatNames(List<MucOptions.User> users) {
455 return concatNames(users, users.size());
456 }
457
458 public static String concatNames(List<MucOptions.User> users, int max) {
459 StringBuilder builder = new StringBuilder();
460 final boolean shortNames = users.size() >= 3;
461 for (int i = 0; i < Math.min(users.size(), max); ++i) {
462 if (builder.length() != 0) {
463 builder.append(", ");
464 }
465 final String name = UIHelper.getDisplayName(users.get(i));
466 if (name != null) {
467 builder.append(shortNames ? name.split("\\s+")[0] : name);
468 }
469 }
470 return builder.toString();
471 }
472
473 public static String getFileDescriptionString(final Context context, final Message message) {
474 if (message.getType() == Message.TYPE_IMAGE) {
475 return context.getString(R.string.image);
476 }
477 final String mime = message.getMimeType();
478 if (mime == null) {
479 return context.getString(R.string.file);
480 } else if (mime.startsWith("audio/")) {
481 return context.getString(R.string.audio);
482 } else if (mime.startsWith("video/")) {
483 return context.getString(R.string.video);
484 } else if (mime.equals("image/gif")) {
485 return context.getString(R.string.gif);
486 } else if (mime.startsWith("image/")) {
487 return context.getString(R.string.image);
488 } else if (mime.contains("pdf")) {
489 return context.getString(R.string.pdf_document);
490 } else if (mime.equals("application/vnd.android.package-archive")) {
491 return context.getString(R.string.apk);
492 } else if (mime.equals(ExportBackupService.MIME_TYPE)) {
493 return context.getString(R.string.conversations_backup);
494 } else if (mime.contains("vcard")) {
495 return context.getString(R.string.vcard);
496 } else if (mime.equals("text/x-vcalendar") || mime.equals("text/calendar")) {
497 return context.getString(R.string.event);
498 } else if (mime.equals("application/epub+zip") || mime.equals("application/vnd.amazon.mobi8-ebook")) {
499 return context.getString(R.string.ebook);
500 } else if (mime.equals("application/gpx+xml")) {
501 return context.getString(R.string.gpx_track);
502 } else {
503 return mime;
504 }
505 }
506
507 public static String getMessageDisplayName(final Message message) {
508 final Conversational conversation = message.getConversation();
509 if (message.getStatus() == Message.STATUS_RECEIVED) {
510 final Contact contact = message.getContact();
511 if (conversation.getMode() == Conversation.MODE_MULTI) {
512 if (contact != null) {
513 return contact.getDisplayName();
514 } else {
515 return getDisplayedMucCounterpart(message.getCounterpart());
516 }
517 } else {
518 return contact != null ? contact.getDisplayName() : "";
519 }
520 } else {
521 if (conversation instanceof Conversation && conversation.getMode() == Conversation.MODE_MULTI) {
522 return ((Conversation) conversation).getMucOptions().getSelf().getName();
523 } else {
524 final Jid jid = conversation.getAccount().getJid();
525 return jid.getLocal() != null ? jid.getLocal() : jid.getDomain().toString();
526 }
527 }
528 }
529
530 public static String getMessageHint(Context context, Conversation conversation) {
531 switch (conversation.getNextEncryption()) {
532 case Message.ENCRYPTION_NONE:
533 if (Config.multipleEncryptionChoices()) {
534 return context.getString(R.string.send_unencrypted_message);
535 } else {
536 return context.getString(R.string.send_message_to_x, conversation.getName());
537 }
538 case Message.ENCRYPTION_AXOLOTL:
539 AxolotlService axolotlService = conversation.getAccount().getAxolotlService();
540 if (axolotlService != null && axolotlService.trustedSessionVerified(conversation)) {
541 return context.getString(R.string.send_omemo_x509_message);
542 } else {
543 return context.getString(R.string.send_omemo_message);
544 }
545 case Message.ENCRYPTION_PGP:
546 return context.getString(R.string.send_pgp_message);
547 default:
548 return "";
549 }
550 }
551
552 public static String getDisplayedMucCounterpart(final Jid counterpart) {
553 if (counterpart == null) {
554 return "";
555 } else if (!counterpart.isBareJid()) {
556 return counterpart.getResource().trim();
557 } else {
558 return counterpart.toString().trim();
559 }
560 }
561
562 public static boolean receivedLocationQuestion(Message message) {
563 if (message == null
564 || message.getStatus() != Message.STATUS_RECEIVED
565 || message.getType() != Message.TYPE_TEXT) {
566 return false;
567 }
568 String body = message.getBody() == null ? null : message.getBody().trim().toLowerCase(Locale.getDefault());
569 body = body.replace("?", "").replace("¿", "");
570 return LOCATION_QUESTIONS.contains(body);
571 }
572
573 public static ListItem.Tag getTagForStatus(Context context, Presence.Status status) {
574 switch (status) {
575 case CHAT:
576 return new ListItem.Tag(context.getString(R.string.presence_chat), 0xff259b24);
577 case AWAY:
578 return new ListItem.Tag(context.getString(R.string.presence_away), 0xffff9800);
579 case XA:
580 return new ListItem.Tag(context.getString(R.string.presence_xa), 0xfff44336);
581 case DND:
582 return new ListItem.Tag(context.getString(R.string.presence_dnd), 0xfff44336);
583 default:
584 return new ListItem.Tag(context.getString(R.string.presence_online), 0xff259b24);
585 }
586 }
587
588 public static String filesizeToString(long size) {
589 if (size > (1.5 * 1024 * 1024)) {
590 return Math.round(size * 1f / (1024 * 1024)) + " MiB";
591 } else if (size >= 1024) {
592 return Math.round(size * 1f / 1024) + " KiB";
593 } else {
594 return size + " B";
595 }
596 }
597}