status

filcnaplo/lib/api/providers/status_provider.dart

@@ -0,0 +1,69 @@
+import 'package:connectivity_plus/connectivity_plus.dart';
+import 'package:flutter/widgets.dart';
+import 'package:http/http.dart' as http;
+
+enum Status { network, maintenance, syncing }
+
+class StatusProvider extends ChangeNotifier {
+  List<Status> _stack = [];
+  double _progress = 0.0;
+
+  StatusProvider() {
+    _handleNetworkChanges();
+  }
+
+  Status? getStatus() => _stack.length > 0 ? _stack[0] : null;
+  // Status progress from 0.0 to 1.0
+  double get progress => _progress;
+
+  void _handleNetworkChanges() {
+    Connectivity().onConnectivityChanged.listen((event) {
+      if (event == ConnectivityResult.none) {
+        if (!_stack.contains(Status.network)) {
+          _stack.insert(0, Status.network);
+          notifyListeners();
+        }
+      } else {
+        if (_stack.contains(Status.network)) {
+          _stack.remove(Status.network);
+          notifyListeners();
+        }
+      }
+    });
+  }
+
+  void triggerRequest(http.Response res) {
+    if (res.headers.containsKey("x-maintenance-mode") || res.statusCode == 503) {
+      if (!_stack.contains(Status.maintenance)) {
+        _stack.insert(0, Status.maintenance);
+        notifyListeners();
+      }
+    } else {
+      if (_stack.contains(Status.maintenance)) {
+        _stack.remove(Status.maintenance);
+        notifyListeners();
+      }
+    }
+  }
+
+  void triggerSync({required int current, required int max}) {
+    double prev = _progress;
+
+    if (!_stack.contains(Status.syncing)) {
+      _stack.add(Status.syncing);
+      notifyListeners();
+    }
+
+    if (max == 0) {
+      _progress = 0.0;
+    } else {
+      _progress = current / max;
+    }
+
+    if (_progress == 1.0) {
+      _stack.remove(Status.syncing);
+      _progress = 0.0;
+      notifyListeners();
+    } else if (progress != prev) notifyListeners();
+  }
+}