famedlysdk/lib/src/Event.dart

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/*
* Copyright (c) 2019 Zender & Kurtz GbR.
*
* Authors:
* Christian Pauly <krille@famedly.com>
* Marcel Radzio <mtrnord@famedly.com>
*
* This file is part of famedlysdk.
*
* famedlysdk is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* famedlysdk is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with famedlysdk. If not, see <http://www.gnu.org/licenses/>.
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*/
import 'package:famedlysdk/src/sync/EventUpdate.dart';
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import 'package:famedlysdk/src/utils/ChatTime.dart';
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import './Room.dart';
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import './RawEvent.dart';
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/// Defines a timeline event for a room.
class Event extends RawEvent {
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/// The status of this event.
/// -1=ERROR
/// 0=SENDING
/// 1=SENT
/// 2=RECEIVED
int status;
Event(
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{this.status,
dynamic content,
String typeKey,
String eventId,
String roomId,
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String senderId,
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ChatTime time,
dynamic unsigned,
Room room})
: super(
content: content,
typeKey: typeKey,
eventId: eventId,
roomId: roomId,
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senderId: senderId,
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time: time,
unsigned: unsigned,
room: room);
/// Get a State event from a table row or from the event stream.
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factory Event.fromJson(Map<String, dynamic> jsonPayload, Room room) {
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final Map<String, dynamic> content =
RawEvent.getMapFromPayload(jsonPayload['content']);
final Map<String, dynamic> unsigned =
RawEvent.getMapFromPayload(jsonPayload['unsigned']);
return Event(
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status: jsonPayload['status'] ?? 1,
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content: content,
typeKey: jsonPayload['type'],
eventId: jsonPayload['event_id'],
roomId: jsonPayload['room_id'],
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senderId: jsonPayload['sender'],
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time: ChatTime(jsonPayload['origin_server_ts']),
unsigned: unsigned,
room: room);
}
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/// Returns the body of this event if it has a body.
String get text => content["body"] ?? "";
/// Returns the formatted boy of this event if it has a formatted body.
String get formattedText => content["formatted_body"] ?? "";
/// Use this to get the body.
String getBody() {
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if (text != "") return text;
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if (formattedText != "") return formattedText;
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return "$type";
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}
/// Removes this event if the status is < 1. This event will just be removed
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/// from the database and the timelines. Returns false if not removed.
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Future<bool> remove() async {
if (status < 1) {
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if (room.client.store != null)
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await room.client.store.db
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.rawDelete("DELETE FROM Events WHERE id=?", [eventId]);
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room.client.connection.onEvent.add(EventUpdate(
roomID: room.id,
type: "timeline",
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eventType: typeKey,
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content: {
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"event_id": eventId,
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"status": -2,
"content": {"body": "Removed..."}
}));
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return true;
}
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return false;
}
/// Try to send this event again. Only works with events of status -1.
Future<String> sendAgain({String txid}) async {
if (status != -1) return null;
remove();
final String eventID = await room.sendTextEvent(text, txid: txid);
return eventID;
}
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}