forked from firka/student-legacy
80 lines
2.1 KiB
Dart
80 lines
2.1 KiB
Dart
import 'package:connectivity_plus/connectivity_plus.dart';
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import 'package:flutter/widgets.dart';
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import 'package:http/http.dart' as http;
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enum Status { network, maintenance, syncing }
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class StatusProvider extends ChangeNotifier {
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final List<Status> _stack = [];
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double _progress = 0.0;
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ConnectivityResult _networkType = ConnectivityResult.none;
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ConnectivityResult get networkType => _networkType;
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StatusProvider() {
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_handleNetworkChanges();
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Connectivity().checkConnectivity().then((value) => _networkType = value);
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}
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Status? getStatus() => _stack.isNotEmpty ? _stack[0] : null;
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// Status progress from 0.0 to 1.0
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double get progress => _progress;
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void _handleNetworkChanges() {
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Connectivity().onConnectivityChanged.listen((event) {
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_networkType = event;
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if (event == ConnectivityResult.none) {
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if (!_stack.contains(Status.network)) {
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_stack.insert(0, Status.network);
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notifyListeners();
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}
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} else {
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if (_stack.contains(Status.network)) {
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_stack.remove(Status.network);
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notifyListeners();
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}
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}
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});
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}
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void triggerRequest(http.Response res) {
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if (res.headers.containsKey("x-maintenance-mode") || res.statusCode == 503) {
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if (!_stack.contains(Status.maintenance)) {
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_stack.insert(0, Status.maintenance);
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notifyListeners();
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}
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} else {
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if (_stack.contains(Status.maintenance)) {
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_stack.remove(Status.maintenance);
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notifyListeners();
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}
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}
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}
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void triggerSync({required int current, required int max}) {
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double prev = _progress;
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if (!_stack.contains(Status.syncing)) {
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_stack.add(Status.syncing);
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_progress = 0.0;
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notifyListeners();
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}
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if (max == 0) {
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_progress = 0.0;
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} else {
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_progress = current / max;
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}
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if (_progress == 1.0) {
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notifyListeners();
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// Wait for animation
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Future.delayed(const Duration(milliseconds: 250), () {
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_stack.remove(Status.syncing);
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notifyListeners();
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});
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} else if (progress != prev) {
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notifyListeners();
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}
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}
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}
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