fluffychat/lib/views/chat.dart
2021-04-25 07:27:06 +02:00

660 lines
19 KiB
Dart

import 'dart:async';
import 'dart:io';
import 'package:adaptive_dialog/adaptive_dialog.dart';
import 'package:adaptive_page_layout/adaptive_page_layout.dart';
import 'package:emoji_picker_flutter/emoji_picker_flutter.dart';
import 'package:famedlysdk/famedlysdk.dart';
import 'package:file_picker_cross/file_picker_cross.dart';
import 'package:fluffychat/config/app_config.dart';
import 'package:fluffychat/views/ui/chat_ui.dart';
import 'package:fluffychat/views/recording_dialog.dart';
import 'package:future_loading_dialog/future_loading_dialog.dart';
import 'package:fluffychat/views/widgets/matrix.dart';
import 'package:fluffychat/utils/matrix_locals.dart';
import 'package:fluffychat/utils/platform_infos.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter/scheduler.dart';
import 'package:flutter/services.dart';
import 'package:flutter_gen/gen_l10n/l10n.dart';
import 'package:image_picker/image_picker.dart';
import 'package:permission_handler/permission_handler.dart';
import 'package:scroll_to_index/scroll_to_index.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:url_launcher/url_launcher.dart';
import 'send_file_dialog.dart';
import '../utils/filtered_timeline_extension.dart';
import '../utils/matrix_file_extension.dart';
class Chat extends StatefulWidget {
final String id;
final String scrollToEventId;
Chat(this.id, {Key key, this.scrollToEventId})
: super(key: key ?? Key('chatroom-$id'));
@override
ChatController createState() => ChatController();
}
class ChatController extends State<Chat> {
Room room;
Timeline timeline;
MatrixState matrix;
final AutoScrollController scrollController = AutoScrollController();
FocusNode inputFocus = FocusNode();
Timer typingCoolDown;
Timer typingTimeout;
bool currentlyTyping = false;
List<Event> selectedEvents = [];
List<Event> filteredEvents;
final Set<String> unfolded = {};
Event replyEvent;
Event editEvent;
bool showScrollDownButton = false;
bool get selectMode => selectedEvents.isNotEmpty;
final int _loadHistoryCount = 100;
String inputText = '';
String pendingText = '';
bool get canLoadMore => timeline.events.last.type != EventTypes.RoomCreate;
void startCallAction() async {
final url =
'${AppConfig.jitsiInstance}${Uri.encodeComponent(Matrix.of(context).client.generateUniqueTransactionId())}';
final success = await showFutureLoadingDialog(
context: context,
future: () => room.sendEvent({
'msgtype': Matrix.callNamespace,
'body': url,
}));
if (success.error != null) return;
await launch(url);
}
void requestHistory() async {
if (canLoadMore) {
try {
await timeline.requestHistory(historyCount: _loadHistoryCount);
} catch (err) {
AdaptivePageLayout.of(context).showSnackBar(
SnackBar(content: Text(err.toLocalizedString(context))));
}
}
}
void _updateScrollController() {
if (!mounted) {
return;
}
if (scrollController.position.pixels ==
scrollController.position.maxScrollExtent &&
timeline.events.isNotEmpty &&
timeline.events[timeline.events.length - 1].type !=
EventTypes.RoomCreate) {
requestHistory();
}
if (scrollController.position.pixels > 0 && showScrollDownButton == false) {
setState(() => showScrollDownButton = true);
} else if (scrollController.position.pixels == 0 &&
showScrollDownButton == true) {
setState(() => showScrollDownButton = false);
}
}
@override
void initState() {
scrollController.addListener(_updateScrollController);
super.initState();
}
void updateView() {
if (!mounted) return;
setState(
() {
filteredEvents = timeline.getFilteredEvents(unfolded: unfolded);
},
);
}
void unfold(String eventId) {
var i = filteredEvents.indexWhere((e) => e.eventId == eventId);
setState(() {
while (i < filteredEvents.length - 1 && filteredEvents[i].isState) {
unfolded.add(filteredEvents[i].eventId);
i++;
}
filteredEvents = timeline.getFilteredEvents(unfolded: unfolded);
});
}
Future<bool> getTimeline() async {
if (timeline == null) {
timeline = await room.getTimeline(onUpdate: updateView);
if (timeline.events.isNotEmpty) {
// ignore: unawaited_futures
room.setUnread(false).catchError((err) {
if (err is MatrixException && err.errcode == 'M_FORBIDDEN') {
// ignore if the user is not in the room (still joining)
return;
}
throw err;
});
}
if (room.notificationCount != null &&
room.notificationCount > 0 &&
timeline != null &&
timeline.events.isNotEmpty &&
Matrix.of(context).webHasFocus) {
// ignore: unawaited_futures
room.sendReadMarker(
timeline.events.first.eventId,
readReceiptLocationEventId: timeline.events.first.eventId,
);
}
// when the scroll controller is attached we want to scroll to an event id, if specified
// and update the scroll controller...which will trigger a request history, if the
// "load more" button is visible on the screen
SchedulerBinding.instance.addPostFrameCallback((_) async {
if (mounted) {
if (widget.scrollToEventId != null) {
scrollToEventId(widget.scrollToEventId);
}
_updateScrollController();
}
});
}
filteredEvents = timeline.getFilteredEvents(unfolded: unfolded);
return true;
}
@override
void dispose() {
timeline?.cancelSubscriptions();
timeline = null;
matrix.client.activeRoomId = '';
super.dispose();
}
TextEditingController sendController = TextEditingController();
void send() {
if (sendController.text.trim().isEmpty) return;
room.sendTextEvent(sendController.text,
inReplyTo: replyEvent, editEventId: editEvent?.eventId);
sendController.text = pendingText;
setState(() {
inputText = pendingText;
replyEvent = null;
editEvent = null;
pendingText = '';
});
}
void sendFileAction() async {
final result =
await FilePickerCross.importFromStorage(type: FileTypeCross.any);
if (result == null) return;
await showDialog(
context: context,
useRootNavigator: false,
builder: (c) => SendFileDialog(
file: MatrixFile(
bytes: result.toUint8List(),
name: result.fileName,
).detectFileType,
room: room,
),
);
}
void sendImageAction() async {
final result =
await FilePickerCross.importFromStorage(type: FileTypeCross.image);
if (result == null) return;
await showDialog(
context: context,
useRootNavigator: false,
builder: (c) => SendFileDialog(
file: MatrixImageFile(
bytes: result.toUint8List(),
name: result.fileName,
),
room: room,
),
);
}
void openCameraAction() async {
final file = await ImagePicker().getImage(source: ImageSource.camera);
if (file == null) return;
final bytes = await file.readAsBytes();
await showDialog(
context: context,
useRootNavigator: false,
builder: (c) => SendFileDialog(
file: MatrixImageFile(
bytes: bytes,
name: file.path,
),
room: room,
),
);
}
void voiceMessageAction() async {
if (await Permission.microphone.isGranted != true) {
final status = await Permission.microphone.request();
if (status != PermissionStatus.granted) return;
}
final result = await showDialog<String>(
context: context,
builder: (c) => RecordingDialog(),
useRootNavigator: false,
);
if (result == null) return;
final audioFile = File(result);
// as we already explicitly say send in the recording dialog,
// we do not need the send file dialog anymore. We can just send this straight away.
await showFutureLoadingDialog(
context: context,
future: () => room.sendFileEvent(
MatrixAudioFile(
bytes: audioFile.readAsBytesSync(), name: audioFile.path),
),
);
}
String _getSelectedEventString() {
var copyString = '';
if (selectedEvents.length == 1) {
return selectedEvents.first
.getDisplayEvent(timeline)
.getLocalizedBody(MatrixLocals(L10n.of(context)));
}
for (final event in selectedEvents) {
if (copyString.isNotEmpty) copyString += '\n\n';
copyString += event.getDisplayEvent(timeline).getLocalizedBody(
MatrixLocals(L10n.of(context)),
withSenderNamePrefix: true);
}
return copyString;
}
void copyEventsAction() {
Clipboard.setData(ClipboardData(text: _getSelectedEventString()));
setState(() => selectedEvents.clear());
}
void reportEventAction() async {
final event = selectedEvents.single;
final score = await showConfirmationDialog<int>(
context: context,
title: L10n.of(context).howOffensiveIsThisContent,
useRootNavigator: false,
actions: [
AlertDialogAction(
key: -100,
label: L10n.of(context).extremeOffensive,
),
AlertDialogAction(
key: -50,
label: L10n.of(context).offensive,
),
AlertDialogAction(
key: 0,
label: L10n.of(context).inoffensive,
),
]);
if (score == null) return;
final reason = await showTextInputDialog(
context: context,
title: L10n.of(context).whyDoYouWantToReportThis,
okLabel: L10n.of(context).ok,
cancelLabel: L10n.of(context).cancel,
useRootNavigator: false,
textFields: [DialogTextField(hintText: L10n.of(context).reason)]);
if (reason == null || reason.single.isEmpty) return;
final result = await showFutureLoadingDialog(
context: context,
future: () => Matrix.of(context).client.reportEvent(
event.roomId,
event.eventId,
reason.single,
score,
),
);
if (result.error != null) return;
setState(() => selectedEvents.clear());
AdaptivePageLayout.of(context).showSnackBar(
SnackBar(content: Text(L10n.of(context).contentHasBeenReported)));
}
void redactEventsAction() async {
final confirmed = await showOkCancelAlertDialog(
context: context,
title: L10n.of(context).messageWillBeRemovedWarning,
okLabel: L10n.of(context).remove,
cancelLabel: L10n.of(context).cancel,
useRootNavigator: false,
) ==
OkCancelResult.ok;
if (!confirmed) return;
for (final event in selectedEvents) {
await showFutureLoadingDialog(
context: context,
future: () => event.status > 0 ? event.redact() : event.remove());
}
setState(() => selectedEvents.clear());
}
bool get canRedactSelectedEvents {
for (final event in selectedEvents) {
if (event.canRedact == false) return false;
}
return true;
}
void forwardEventsAction() async {
if (selectedEvents.length == 1) {
Matrix.of(context).shareContent = selectedEvents.first.content;
} else {
Matrix.of(context).shareContent = {
'msgtype': 'm.text',
'body': _getSelectedEventString(),
};
}
setState(() => selectedEvents.clear());
AdaptivePageLayout.of(context).popUntilIsFirst();
}
void sendAgainAction() {
final event = selectedEvents.first;
if (event.status == -1) {
event.sendAgain();
}
final allEditEvents = event
.aggregatedEvents(timeline, RelationshipTypes.edit)
.where((e) => e.status == -1);
for (final e in allEditEvents) {
e.sendAgain();
}
setState(() => selectedEvents.clear());
}
void replyAction({Event replyTo}) {
setState(() {
replyEvent = replyTo ?? selectedEvents.first;
selectedEvents.clear();
});
inputFocus.requestFocus();
}
void scrollToEventId(String eventId) async {
var eventIndex = filteredEvents.indexWhere((e) => e.eventId == eventId);
if (eventIndex == -1) {
// event id not found...maybe we can fetch it?
// the try...finally is here to start and close the loading dialog reliably
final task = Future.microtask(() async {
// okay, we first have to fetch if the event is in the room
try {
final event = await timeline.getEventById(eventId);
if (event == null) {
// event is null...meaning something is off
return;
}
} catch (err) {
if (err is MatrixException && err.errcode == 'M_NOT_FOUND') {
// event wasn't found, as the server gave a 404 or something
return;
}
rethrow;
}
// okay, we know that the event *is* in the room
while (eventIndex == -1) {
if (!canLoadMore) {
// we can't load any more events but still haven't found ours yet...better stop here
return;
}
try {
await timeline.requestHistory(historyCount: _loadHistoryCount);
} catch (err) {
if (err is TimeoutException) {
// loading the history timed out...so let's do nothing
return;
}
rethrow;
}
eventIndex = filteredEvents.indexWhere((e) => e.eventId == eventId);
}
});
if (context != null) {
await showFutureLoadingDialog(context: context, future: () => task);
} else {
await task;
}
}
if (!mounted) {
return;
}
await scrollController.scrollToIndex(eventIndex,
preferPosition: AutoScrollPosition.middle);
_updateScrollController();
}
void scrollDown() => scrollController.jumpTo(0);
void pickEmojiAction(Iterable<Event> allReactionEvents) async {
final emoji = await showModalBottomSheet(
context: context,
backgroundColor: Colors.transparent,
builder: (innerContext) => Column(
children: [
Spacer(),
Material(
color: Theme.of(context).scaffoldBackgroundColor,
child: EmojiPicker(
onEmojiSelected: (category, emoji) {
// recent emojis don't work, so we sadly have to re-implement them
// https://github.com/JeffG05/emoji_picker/issues/31
SharedPreferences.getInstance().then((prefs) {
final recents = prefs.getStringList('recents') ?? <String>[];
recents.insert(0, emoji.name);
// make sure we remove duplicates
prefs.setStringList('recents', recents.toSet().toList());
});
Navigator.of(innerContext, rootNavigator: false).pop(emoji);
},
),
),
],
),
);
if (emoji == null) return;
// make sure we don't send the same emoji twice
if (allReactionEvents
.any((e) => e.content['m.relates_to']['key'] == emoji.emoji)) return;
return sendEmojiAction(emoji.emoji);
}
void sendEmojiAction(String emoji) async {
await showFutureLoadingDialog(
context: context,
future: () => room.sendReaction(
selectedEvents.single.eventId,
emoji,
),
);
setState(() => selectedEvents.clear());
}
void clearSelectedEvents() => () => setState(() => selectedEvents.clear());
void editSelectedEventAction() {
setState(() {
pendingText = sendController.text;
editEvent = selectedEvents.first;
inputText = sendController.text = editEvent
.getDisplayEvent(timeline)
.getLocalizedBody(MatrixLocals(L10n.of(context)),
withSenderNamePrefix: false, hideReply: true);
selectedEvents.clear();
});
inputFocus.requestFocus();
}
void onEventActionPopupMenuSelected(selected) {
switch (selected) {
case 'copy':
copyEventsAction();
break;
case 'redact':
redactEventsAction();
break;
case 'report':
reportEventAction();
break;
}
}
void goToNewRoomAction() async {
if (OkCancelResult.ok !=
await showOkCancelAlertDialog(
context: context,
title: L10n.of(context).goToTheNewRoom,
message: room
.getState(EventTypes.RoomTombstone)
.parsedTombstoneContent
.body,
okLabel: L10n.of(context).ok,
cancelLabel: L10n.of(context).cancel,
)) {
return;
}
final result = await showFutureLoadingDialog(
context: context,
future: () => room.client.joinRoom(room
.getState(EventTypes.RoomTombstone)
.parsedTombstoneContent
.replacementRoom),
);
await showFutureLoadingDialog(
context: context,
future: room.leave,
);
if (result.error == null) {
await AdaptivePageLayout.of(context)
.pushNamedAndRemoveUntilIsFirst('/rooms/${result.result}');
}
}
void onSelectMessage(Event event) {
if (!event.redacted) {
if (selectedEvents.contains(event)) {
setState(
() => selectedEvents.remove(event),
);
} else {
setState(
() => selectedEvents.add(event),
);
}
selectedEvents.sort(
(a, b) => a.originServerTs.compareTo(b.originServerTs),
);
}
}
int findChildIndexCallback(Key key, Map<String, int> thisEventsKeyMap) {
// this method is called very often. As such, it has to be optimized for speed.
if (!(key is ValueKey)) {
return null;
}
final eventId = (key as ValueKey).value;
if (!(eventId is String)) {
return null;
}
// first fetch the last index the event was at
final index = thisEventsKeyMap[eventId];
if (index == null) {
return null;
}
// we need to +1 as 0 is the typing thing at the bottom
return index + 1;
}
void onInputBarSubmitted(String text) {
send();
FocusScope.of(context).requestFocus(inputFocus);
}
void onAddPopupMenuButtonSelected(String choice) {
if (choice == 'file') {
sendFileAction();
} else if (choice == 'image') {
sendImageAction();
}
if (choice == 'camera') {
openCameraAction();
}
if (choice == 'voice') {
voiceMessageAction();
}
}
void onInputBarChanged(String text) {
typingCoolDown?.cancel();
typingCoolDown = Timer(Duration(seconds: 2), () {
typingCoolDown = null;
currentlyTyping = false;
room.sendTypingNotification(false);
});
typingTimeout ??= Timer(Duration(seconds: 30), () {
typingTimeout = null;
currentlyTyping = false;
});
if (!currentlyTyping) {
currentlyTyping = true;
room.sendTypingNotification(true,
timeout: Duration(seconds: 30).inMilliseconds);
}
// Workaround for a current desktop bug
if (!PlatformInfos.isBetaDesktop) {
setState(() => inputText = text);
}
}
void cancelReplyEventAction() => setState(() {
if (editEvent != null) {
inputText = sendController.text = pendingText;
pendingText = '';
}
replyEvent = null;
editEvent = null;
});
@override
Widget build(BuildContext context) => ChatUI(this);
}