81 lines
2.2 KiB
Dart
81 lines
2.2 KiB
Dart
import 'dart:isolate';
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import 'package:flutter/material.dart';
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import 'package:flutter_isolate/flutter_isolate.dart';
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import '../local_storage/key_value_storage.dart';
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import '../local_storage/sqflite_localpodcast.dart';
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enum RefreshState { none, fetch, error, artwork }
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class RefreshItem {
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String title;
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RefreshState refreshState;
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bool artwork;
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RefreshItem(this.title, this.refreshState, {this.artwork = false});
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}
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class RefreshWorker extends ChangeNotifier {
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FlutterIsolate refreshIsolate;
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ReceivePort receivePort;
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SendPort refreshSendPort;
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RefreshItem _currentRefreshItem = RefreshItem('', RefreshState.none);
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bool _complete = false;
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RefreshItem get currentRefreshItem => _currentRefreshItem;
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bool get complete => _complete;
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bool _created = false;
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Future<void> _createIsolate() async {
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receivePort = ReceivePort();
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refreshIsolate = await FlutterIsolate.spawn(
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refreshIsolateEntryPoint, receivePort.sendPort);
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}
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void _listen() {
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receivePort.distinct().listen((message) {
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if (message is List) {
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_currentRefreshItem =
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RefreshItem(message[0], RefreshState.values[message[1]]);
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notifyListeners();
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} else if (message is String && message == "done") {
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_currentRefreshItem = RefreshItem('', RefreshState.none);
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_complete = true;
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notifyListeners();
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refreshIsolate?.kill();
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refreshIsolate = null;
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_created = false;
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}
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});
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}
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Future<void> start() async {
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if (!_created) {
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_complete = false;
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_createIsolate();
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_listen();
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_created = true;
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}
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}
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void dispose() {
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refreshIsolate?.kill();
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refreshIsolate = null;
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super.dispose();
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}
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}
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Future<void> refreshIsolateEntryPoint(SendPort sendPort) async {
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var refreshstorage = KeyValueStorage(refreshdateKey);
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await refreshstorage.saveInt(DateTime.now().millisecondsSinceEpoch);
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var dbHelper = DBHelper();
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var podcastList = await dbHelper.getPodcastLocalAll();
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for (var podcastLocal in podcastList) {
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sendPort.send([podcastLocal.title, 1]);
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var updateCount = await dbHelper.updatePodcastRss(podcastLocal);
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print('Refresh ${podcastLocal.title}$updateCount');
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}
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sendPort.send("done");
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}
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