nexus/lib/helpers/extensions/event_to_message.dart

134 lines
4.5 KiB
Dart

import "package:collection/collection.dart";
import "package:flutter/foundation.dart";
import "package:flutter_chat_core/flutter_chat_core.dart";
import "package:matrix/matrix.dart";
extension EventToMessage on Event {
Future<Message?> toMessage({
bool mustBeText = false,
bool includeEdits = false,
}) async {
final replyId = inReplyToEventId();
final newEvent = (unsigned?["m.relations"] as Map?)?["m.replace"];
final event = newEvent == null ? this : Event.fromJson(newEvent, room);
final replyEvent = replyId == null
? null
: await room.getEventById(replyId);
final sender =
await event.fetchSenderUser() ?? event.senderFromMemoryOrFallback;
final newContent = event.content["m.new_content"] as Map?;
final metadata = {
"formatted":
newContent?["formatted_body"] ??
newContent?["body"] ??
event.content["formatted_body"] ??
event.content["body"] ??
"",
"reply": await replyEvent?.toMessage(mustBeText: true),
"body": newContent?["body"] ?? event.content["body"],
"eventType": event.type,
"avatarUrl": sender.avatarUrl.toString(),
"displayName": sender.displayName ?? sender.id,
"txnId": transactionId,
};
final editedAt = event.relationshipType == RelationshipTypes.edit
? event.originServerTs
: null;
if ((redacted && !mustBeText) ||
(!includeEdits && (relationshipType == RelationshipTypes.edit))) {
return null;
}
// TODO: Use server-generated preview if enabled when https://github.com/famedly/matrix-dart-sdk/issues/2195 is fixed.
// final match = Uri.tryParse(
// RegExp(regexLink, caseSensitive: false).firstMatch(body)?.group(0) ?? "",
// );
// final preview = match == null
// ? null
// : await room.client.getUrlPreview(match);
final asText =
Message.text(
metadata: metadata,
id: eventId,
authorId: senderId,
text: redacted ? "This message has been deleted..." : event.body,
replyToMessageId: replyId,
deliveredAt: originServerTs,
editedAt: editedAt,
)
as TextMessage;
if (mustBeText) return asText;
return switch (type) {
EventTypes.Encrypted => asText.copyWith(
text: "Unable to decrypt message.",
metadata: {...metadata, "formatted": "Unable to decrypt message."},
),
(EventTypes.Sticker || EventTypes.Message) => switch (messageType) {
(MessageTypes.Sticker || MessageTypes.Image) => Message.image(
metadata: metadata,
id: eventId,
authorId: senderId,
text: event.text,
source: (await getAttachmentUri()).toString(),
replyToMessageId: replyId,
deliveredAt: originServerTs,
),
MessageTypes.Audio => Message.audio(
metadata: metadata,
id: eventId,
authorId: senderId,
text: event.text,
replyToMessageId: replyId,
source: (await event.getAttachmentUri()).toString(),
deliveredAt: originServerTs,
// TODO: See if we can figure out duration
duration: Duration(hours: 1),
),
MessageTypes.File => Message.file(
name: event.content["filename"].toString(),
metadata: metadata,
id: eventId,
authorId: senderId,
source: (await event.getAttachmentUri()).toString(),
replyToMessageId: replyId,
deliveredAt: originServerTs,
),
_ => asText,
},
EventTypes.RoomMember => Message.system(
metadata: metadata,
id: eventId,
authorId: senderId,
text:
"${event.asUser.displayName ?? event.asUser.id} ${switch (Membership.values.firstWhereOrNull((membership) => membership.name == event.content["membership"])) {
Membership.invite => "was invited to",
Membership.join => "joined",
Membership.leave => "left",
Membership.knock => "asked to join",
Membership.ban => "was banned from",
_ => "did something relating to",
}} the room.",
),
EventTypes.Redaction => null,
_ =>
kDebugMode
? Message.unsupported(
metadata: metadata,
id: eventId,
authorId: senderId,
replyToMessageId: replyId,
)
: null,
};
}
}