249 lines
7.3 KiB
Dart
249 lines
7.3 KiB
Dart
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// Haveno App extends the features of Haveno, supporting mobile devices and more.
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// Copyright (C) 2024 Kewbit (https://kewbit.org)
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// Source Code: https://git.haveno.com/haveno/haveno-app.git
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//
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// Author: Kewbit
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// Website: https://kewbit.org
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// Contact Email: me@kewbit.org
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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import 'dart:async';
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import 'package:flutter/material.dart';
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import 'package:haveno/grpc_models.dart';
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import 'package:haveno/profobuf_models.dart';
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import 'package:shared_preferences/shared_preferences.dart';
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abstract class DeviceManagerAutoInitialization {
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Future<void> init();
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}
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abstract class PollingProvider with ChangeNotifier {
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Timer? _timer;
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bool _isPolling = false;
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final Duration maxPollingInterval;
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PollingProvider(this.maxPollingInterval);
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// Method to be implemented by subclasses to define the polling action
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Future<void> pollAction();
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// Method to start polling with a custom interval
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void startPolling([Duration? interval]) {
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if (_isPolling) return; // Prevent multiple polling tasks
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_isPolling = true;
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_timer = Timer.periodic(interval ?? maxPollingInterval, (Timer t) async {
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await pollAction();
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});
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}
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// Method to stop polling
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void stopPolling() {
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_timer?.cancel();
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_isPolling = false;
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}
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@override
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void dispose() {
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stopPolling();
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super.dispose();
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}
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}
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class SyncTask {
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final Future<void> Function() taskFunction;
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final Duration cooldown;
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final List<SyncTask> dependencies;
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DateTime _lastRun;
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SyncTask({
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required this.taskFunction,
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required this.cooldown,
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this.dependencies = const [], // Default to no dependencies
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}) : _lastRun = DateTime.fromMillisecondsSinceEpoch(0); // Initialize to a time far in the past
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bool shouldRun() {
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// Check if all dependencies have been run
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bool dependenciesMet = dependencies.every((task) => task.hasRun);
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// Check if cooldown period has passed and dependencies are met
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return dependenciesMet && DateTime.now().difference(_lastRun) >= cooldown;
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}
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Future<void> run() async {
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if (shouldRun()) {
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await taskFunction();
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_lastRun = DateTime.now();
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}
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}
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bool get hasRun => _lastRun.isAfter(DateTime.fromMillisecondsSinceEpoch(0));
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}
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class SyncManager {
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final List<SyncTask> _tasks = [];
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final Duration checkInterval;
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Timer? _timer;
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SyncManager({required this.checkInterval});
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void addTask(SyncTask task) {
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_tasks.add(task);
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}
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void start() {
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_timer = Timer.periodic(checkInterval, (timer) async {
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// Iterate over tasks, making sure dependencies are resolved
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for (var task in _tasks) {
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await task.run();
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}
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});
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}
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void stop() {
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_timer?.cancel();
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}
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}
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mixin CooldownMixin {
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final Map<String, Duration> _cooldownDurations = {};
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// Initialize cooldown durations
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void setCooldownDurations(Map<String, Duration> durations) {
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_cooldownDurations.addAll(durations);
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}
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// Check if the cooldown is valid by comparing the current time with the stored last run time
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Future<bool> isCooldownValid(String key) async {
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final SharedPreferences prefs = await SharedPreferences.getInstance();
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final lastRunTimestamp = prefs.getInt('cooldown_$key');
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if (lastRunTimestamp == null) return false; // No previous run recorded, so it's invalid.
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final lastRunTime = DateTime.fromMillisecondsSinceEpoch(lastRunTimestamp);
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final duration = _cooldownDurations[key] ?? const Duration(minutes: 5);
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return DateTime.now().isBefore(lastRunTime.add(duration)); // Valid if current time is before cooldown expires.
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}
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// Update the cooldown with the current time and store it in shared_preferences
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Future<void> updateCooldown(String key) async {
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final SharedPreferences prefs = await SharedPreferences.getInstance();
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final now = DateTime.now();
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final duration = _cooldownDurations[key] ?? const Duration(minutes: 5); // Default to 5 minutes if not defined
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final cooldownEndTime = now.add(duration);
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await prefs.setInt('cooldown_$key', cooldownEndTime.millisecondsSinceEpoch); // Store the expiration time
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}
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// Optionally, you can add a method to clear cooldowns for testing or reset purposes
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Future<void> clearCooldown(String key) async {
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final SharedPreferences prefs = await SharedPreferences.getInstance();
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await prefs.remove('cooldown_$key');
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}
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}
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abstract class PlatformLifecycleWidget extends StatefulWidget {
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final Widget child;
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final Widget Function(BuildContext context, Widget child) builder;
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const PlatformLifecycleWidget({
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super.key,
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required this.child,
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required this.builder,
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});
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}
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abstract class PlatformLifecycleState<T extends PlatformLifecycleWidget> extends State<T> {
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Future<void> initPlatform();
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@override
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void initState() {
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super.initState();
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initPlatform();
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}
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@override
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Widget build(BuildContext context) {
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return widget.builder(context, widget.child);
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}
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}
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enum BackgroundEventType {
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updateTorStatus,
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updateDaemonStatus,
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torStdOutLog,
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torStdErrLog,
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}
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class BackgroundEvent {
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final BackgroundEventType type;
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final Map<String, dynamic> data;
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BackgroundEvent({required this.type, required this.data});
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}
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class EventDispatcher {
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final Map<BackgroundEventType, List<Function(Map<String, dynamic>)>> _listeners = {};
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void subscribe(BackgroundEventType eventType, Function(Map<String, dynamic>) callback) {
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_listeners[eventType] ??= [];
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_listeners[eventType]!.add(callback);
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}
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void unsubscribe(BackgroundEventType eventType, Function(Map<String, dynamic>) callback) {
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_listeners[eventType]?.remove(callback);
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}
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void dispatch(BackgroundEvent event) {
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if (_listeners[event.type] != null) {
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for (var listener in _listeners[event.type]!) {
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listener(event.data);
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}
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}
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}
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}
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mixin StreamListenerProviderMixin on ChangeNotifier {
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StreamSubscription? _subscription;
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// A helper function to manage stream subscriptions
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void listenToStream(Stream<void> stream, VoidCallback onData) {
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_subscription = stream.listen((_) {
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onData(); // Perform action when data arrives (e.g., notifyListeners)
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});
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}
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@override
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void dispose() {
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_subscription?.cancel();
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super.dispose();
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}
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}
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// Notification callbacks
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typedef NewChatMessageCallback = void Function(ChatMessage chatMessage);
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typedef TradeUpdateCallback = void Function(TradeInfo trade, bool isNewTrade);
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// Background service callbacks
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typedef UpdateTorStatusBackgroundCallback = void Function(String status, String detail);
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typedef UpdateDaemonStatusBackgroundCallback = void Function(String status, String detail);
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typedef TorStdOutLogBackgroundCallback = void Function(String details);
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typedef TorStdErrLogBackgroundCallback = void Function(String details);
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