100 lines
2.5 KiB
Dart
100 lines
2.5 KiB
Dart
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import 'package:elysia/bean/Mappable.dart';
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import 'package:intl/intl.dart';
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import 'package:intl/intl.dart';
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import '../plugin/StringTool.dart';
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class ChatCacheItem extends Mappable {
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final String roomId;
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final String roomName;
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final String roomImage;
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String lastChatMessage;
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String lastChatTime;
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final String engine;
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ChatCacheItem({
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required this.roomId,
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required this.roomName,
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required this.roomImage,
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required String lastChatMessage,
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required this.lastChatTime,
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required this.engine,
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}) : lastChatMessage = _formatMessage(lastChatMessage);
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/// 格式化消息（去掉 Markdown + 限制长度）
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static String _formatMessage(String message) {
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String text = StringTool.stripMarkdown(message);
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if (text.length > 51) {
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text = text.substring(0, 50) + "...";
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}
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return text;
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}
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void updateTime(DateTime date) {
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lastChatTime = DateFormat('HH:mm').format(date);
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}
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/// copy 方法也会自动格式化 lastChatMessage
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ChatCacheItem copy({
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String? roomId,
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String? roomName,
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String? roomImage,
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String? lastChatMessage,
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String? lastChatTime,
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String? engine,
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}) {
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return ChatCacheItem(
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roomId: roomId ?? this.roomId,
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roomName: roomName ?? this.roomName,
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roomImage: roomImage ?? this.roomImage,
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lastChatMessage: lastChatMessage ?? this.lastChatMessage,
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lastChatTime: lastChatTime ?? this.lastChatTime,
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engine: engine ?? this.engine,
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);
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}
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factory ChatCacheItem.fromJson(Map<String, dynamic> json) {
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String formatted;
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try {
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if (json['lastChatTime'] == null) {
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formatted = "";
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} else {
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DateTime dateTime;
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if (json['lastChatTime'] is int) {
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dateTime = DateTime.fromMillisecondsSinceEpoch(json['lastChatTime']);
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} else {
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dateTime = DateTime.parse(json['lastChatTime']);
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}
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formatted = DateFormat('HH:mm').format(dateTime);
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}
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} catch (e) {
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formatted = "";
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}
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return ChatCacheItem(
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roomId: json['roomId'] ?? '',
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roomName: json['roomName'] ?? '',
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roomImage: json['roomImage'] ?? '',
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lastChatMessage: json['lastChatMessage'] ?? '',
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lastChatTime: formatted,
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engine: json['engine'] ?? '',
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);
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}
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@override
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Map<String, dynamic> toMap() {
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return {
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'roomId': roomId,
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'roomName': roomName,
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'roomImage': roomImage,
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'lastChatMessage': lastChatMessage,
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'lastChatTime': lastChatTime,
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'engine': engine,
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};
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}
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}
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