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/*
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Copyright 2019 fuwa
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This file is part of CyberWOW.
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CyberWOW is free software: you can redistribute it and/or modify
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it under the terms of the GNU 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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CyberWOW 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 General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with CyberWOW. If not, see <https://www.gnu.org/licenses/>.
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*/
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import 'package:flutter/material.dart';
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import 'dart:io';
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import 'dart:developer';
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import 'dart:async';
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import 'dart:convert';
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import 'dart:typed_data';
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import 'package:flutter/services.dart';
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import 'package:path_provider/path_provider.dart';
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import 'controller/helper.dart';
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import 'controller/rpc.dart' as rpc;
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import 'controller/daemon.dart' as daemon;
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import 'controller/refresh.dart' as refresh;
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import 'config.dart';
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abstract class AppState {
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T use<T>
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(
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T Function(BlankState) useBlankState,
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T Function(LoadingState) useLoadingState,
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T Function(SyncingState) useSyncingState,
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T Function(SyncedState) useSyncedState,
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T Function(ReSyncingState) useReSyncingState,
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)
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{
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if (this is BlankState) {
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return useBlankState(this);
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}
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if (this is LoadingState) {
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return useLoadingState(this);
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}
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if (this is SyncingState) {
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return useSyncingState(this);
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}
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if (this is SyncedState) {
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return useSyncedState(this);
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}
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if (this is ReSyncingState) {
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return useReSyncingState(this);
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}
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throw Exception('Invalid state');
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}
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}
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typedef SetStateFunc = void Function(AppState);
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typedef GetNotificationFunc = AppLifecycleState Function();
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class HookedState extends AppState {
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final SetStateFunc setState;
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final GetNotificationFunc getNotification;
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HookedState(this.setState, this.getNotification);
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syncState() {
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setState(this);
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}
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HookedState moveState(HookedState _next) {
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setState(_next);
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return _next;
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}
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}
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class BlankState extends HookedState {
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BlankState(f, s) : super (f, s);
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Future<LoadingState> next(String status) async {
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LoadingState _next = LoadingState(setState, getNotification, status);
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return moveState(_next);
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}
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}
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class LoadingState extends HookedState {
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String banner;
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String status = '';
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LoadingState(f, s, this.banner) : super (f, s);
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void append(String msg) {
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this.status += msg;
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syncState();
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}
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Future<SyncingState> next(Stream<String> loadingProgress, String status) async {
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Future<void> showBanner() async {
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var chars = [];
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banner.runes.forEach((int rune) {
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final c = new String.fromCharCode(rune);
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chars.add(c);
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});
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for (String char in chars) {
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append(char);
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await Future.delayed(Duration(milliseconds: config.splashDelay), () => "1");
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}
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await Future.delayed(const Duration(seconds: 2), () => "1");
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}
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Future<void> load() async {
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log.fine("Loading next");
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await for (var line in loadingProgress) {
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// append(line);
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log.info(line);
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}
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}
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final outputBinExists = await binaryExists(config.outputBin);
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if (outputBinExists) {
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await load();
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}
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else {
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await Future.wait([load(), showBanner()]);
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}
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SyncingState _next = SyncingState(setState, getNotification, status);
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return moveState(_next);
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}
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}
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class SyncingState extends HookedState {
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String stdout;
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bool synced = false;
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SyncingState(f, s, this.stdout) : super (f, s);
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void append(String msg) {
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this.stdout += msg;
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syncState();
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}
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Future<SyncedState> next(Stream<String> processOutput) async {
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log.fine("Syncing next");
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Future<void> printStdout() async {
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await for (var line in processOutput) {
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if (synced) break;
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log.finest('syncing: print stdout loop');
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append(line);
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log.info(line);
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}
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}
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Future<void> checkSync() async {
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await for (var _null in refresh.pull(getNotification, 'syncingState')) {
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log.finer('SyncingState: checkSync loop');
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// here doc is wrong, targetHeight could match height when synced
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// potential bug, targetHeight could be smaller then height
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final _isConnected = await daemon.isConnected();
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final _isSynced = await daemon.isSynced();
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if (_isConnected && _isSynced) {
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synced = true;
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break;
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}
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}
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}
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printStdout();
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await checkSync();
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log.fine('syncing: loop exit');
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final _height = await rpc.height();
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SyncedState _next = SyncedState(setState, getNotification, stdout, processOutput);
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_next.height = _height;
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return moveState(_next);
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}
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}
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class SyncedState extends HookedState {
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String stdout;
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int height;
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Stream<String> processOutput;
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bool synced = true;
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bool connected = true;
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String getInfo = 'getInfo';
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String syncInfo = 'syncInfo';
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String getConnections = 'getConnections';
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List<dynamic> getTransactionPool = [];
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SyncedState(f, s, this.stdout, this.processOutput) : super (f, s);
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Future<ReSyncingState> next() async {
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log.fine("Synced next");
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Future<void> logStdout() async {
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await for (var line in processOutput) {
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if (!synced) break;
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// print('synced: print stdout loop');
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stdout += line;
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log.info(line);
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}
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}
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logStdout();
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Future<void> checkSync() async {
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await for (var _null in refresh.pull(getNotification, 'syncedState')) {
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if (await daemon.isNotSynced()) {
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synced = false;
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break;
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}
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// log.finer('SyncedState: checkSync loop');
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height = await rpc.height();
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connected = await daemon.isConnected();
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getInfo = await rpc.getInfoString();
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// syncInfo = await rpc.syncInfoString();
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getConnections = await rpc.getConnectionsString();
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// getTransactionPool = await rpc.getTransactionPoolString();
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getTransactionPool = await rpc.getTransactionPoolSimple();
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// log.fine('getTransactionPool: $getTransactionPool');
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syncState();
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}
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}
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await checkSync();
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log.fine('synced: loop exit');
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ReSyncingState _next = ReSyncingState(setState, getNotification, stdout, processOutput);
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return moveState(_next);
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}
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}
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class ReSyncingState extends HookedState {
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String stdout;
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Stream<String> processOutput;
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bool synced = false;
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ReSyncingState(f, s, this.stdout, this.processOutput) : super (f, s);
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void append(String msg) {
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this.stdout += msg;
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syncState();
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}
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Future<SyncedState> next() async {
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log.fine("ReSyncing next");
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Future<void> printStdout() async {
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await for (var line in processOutput) {
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if (synced) break;
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// print('re-syncing: print stdout loop');
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append(line);
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log.info(line);
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}
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}
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Future<void> checkSync() async {
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await for (var _null in refresh.pull(getNotification, 'ReSyncingState')) {
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if (await daemon.isSynced()) {
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synced = true;
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break;
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}
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// print('re-syncing: checkSync loop');
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}
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}
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printStdout();
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await checkSync();
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log.fine('resync: await exit');
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SyncedState _next = SyncedState(setState, getNotification, stdout, processOutput);
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_next.height = await rpc.height();
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return moveState(_next);
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}
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}
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