94 lines
3.2 KiB
Dart
94 lines
3.2 KiB
Dart
import 'dart:convert';
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import 'package:cwtch/models/message.dart';
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import 'package:cwtch/widgets/filebubble.dart';
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import 'package:cwtch/widgets/malformedbubble.dart';
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import 'package:cwtch/widgets/messagerow.dart';
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import 'package:flutter/widgets.dart';
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import 'package:provider/provider.dart';
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import '../../main.dart';
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import '../profile.dart';
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class FileMessage extends Message {
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final MessageMetadata metadata;
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final String content;
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final RegExp nonHex = RegExp(r'[^a-f0-9]');
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FileMessage(this.metadata, this.content);
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@override
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Widget getWidget(BuildContext context, Key key, int index) {
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return ChangeNotifierProvider.value(
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value: this.metadata,
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builder: (bcontext, child) {
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try {
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dynamic shareObj = jsonDecode(this.content);
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if (shareObj == null) {
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return MessageRow(MalformedBubble(), index);
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}
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String nameSuggestion = shareObj['f'] as String;
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String rootHash = shareObj['h'] as String;
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String nonce = shareObj['n'] as String;
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int fileSize = shareObj['s'] as int;
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String fileKey = rootHash + "." + nonce;
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if (!Provider.of<ProfileInfoState>(context, listen: false).downloadKnown(fileKey)) {
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Provider.of<FlwtchState>(context, listen: false).cwtch.CheckDownloadStatus(Provider.of<ProfileInfoState>(context, listen: false).onion, fileKey);
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}
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if (!validHash(rootHash, nonce)) {
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return MessageRow(MalformedBubble(), index);
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}
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return MessageRow(FileBubble(nameSuggestion, rootHash, nonce, fileSize, isAuto: metadata.isAuto), index, key: key);
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} catch (e) {
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return MessageRow(MalformedBubble(), index);
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}
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});
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}
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@override
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Widget getPreviewWidget(BuildContext context, {BoxConstraints? constraints}) {
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return ChangeNotifierProvider.value(
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value: this.metadata,
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builder: (bcontext, child) {
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dynamic shareObj = jsonDecode(this.content);
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if (shareObj == null) {
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return MalformedBubble();
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}
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String nameSuggestion = shareObj['f'] as String;
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String rootHash = shareObj['h'] as String;
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String nonce = shareObj['n'] as String;
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int fileSize = shareObj['s'] as int;
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if (!validHash(rootHash, nonce)) {
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return MalformedBubble();
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}
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return Container(
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padding: EdgeInsets.all(1.0),
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decoration: BoxDecoration(),
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clipBehavior: Clip.antiAliasWithSaveLayer,
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constraints: BoxConstraints(minHeight: 50, maxHeight: 50, minWidth: 50, maxWidth: 300),
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alignment: Alignment.centerLeft,
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child: FileBubble(
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nameSuggestion,
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rootHash,
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nonce,
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fileSize,
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isAuto: metadata.isAuto,
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interactive: false,
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isPreview: true,
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));
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});
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}
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@override
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MessageMetadata getMetadata() {
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return this.metadata;
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}
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bool validHash(String hash, String nonce) {
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return hash.length == 128 && nonce.length == 48 && !hash.contains(nonHex) && !nonce.contains(nonHex);
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}
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}
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