Initial project commit

lib/Content.dart

@@ -0,0 +1,91 @@
+import 'package:flutter/material.dart';
+import 'package:geolocator/geolocator.dart';
+
+class Content extends StatefulWidget {
+  const Content({Key? key}) : super(key: key);
+
+  @override
+  _ContentState createState() => _ContentState();
+}
+
+class _ContentState extends State<Content> {
+  String? _coordinates;
+
+  @override
+  Widget build(BuildContext context) {
+    return Center(
+      child: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
+        children: [
+          ElevatedButton(
+            child: Text("Test coordinates"),
+            onPressed: () async {
+              try {
+                _coordinates = (await _getLocationAsync()).toString();
+                setState(() {});
+              } catch (e) {
+                _coordinates = e.toString();
+                setState(() {});
+              }
+            },
+          ),
+          _coordinates != null
+              ? Text(_coordinates!.toString())
+              : const SizedBox(),
+        ],
+      ),
+    );
+  }
+
+  Future<Position> _getLocationAsync() async {
+    bool serviceEnabled;
+    LocationPermission permission;
+
+    showDialog<void>(
+      context: context,
+      builder: (BuildContext dialogContext) {
+        return const SimpleDialog(
+          children: [
+            Center(
+              child: CircularProgressIndicator(),
+            ),
+          ],
+        );
+      },
+    );
+
+    // Test if location services are enabled.
+    serviceEnabled = await Geolocator.isLocationServiceEnabled();
+    if (!serviceEnabled) {
+      // Location services are not enabled don't continue
+      // accessing the position and request users of the
+      // App to enable the location services.
+      return Future.error('Location services are disabled.');
+    }
+
+    permission = await Geolocator.checkPermission();
+    if (permission == LocationPermission.denied) {
+      permission = await Geolocator.requestPermission();
+      if (permission == LocationPermission.denied) {
+        // Permissions are denied, next time you could try
+        // requesting permissions again (this is also where
+        // Android's shouldShowRequestPermissionRationale
+        // returned true. According to Android guidelines
+        // your App should show an explanatory UI now.
+        return Future.error('Location permissions are denied');
+      }
+    }
+
+    if (permission == LocationPermission.deniedForever) {
+      // Permissions are denied forever, handle appropriately.
+      return Future.error(
+          'Location permissions are permanently denied, we cannot request permissions.');
+    }
+
+    // When we reach here, permissions are granted and we can
+    // continue accessing the position of the device.
+    var position = await Geolocator.getCurrentPosition();
+    Navigator.pop(context);
+    return position;
+  }
+}

lib/login.dart

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+import 'dart:convert';
+
+import 'package:flutter/material.dart';
+import 'package:flutter_pwa_test/Content.dart';
+
+class Login extends StatelessWidget {
+  static const String _password = "SGVsbG9Xb3JsZCE=";
+
+  Login({Key? key, required this.loginCallback}) : super(key: key);
+  
+  final VoidCallback loginCallback;
+
+  final GlobalKey<FormState> _formKey = GlobalKey<FormState>();
+
+  @override
+  Widget build(BuildContext context) {
+    return Center(
+      child: Form(
+        key: _formKey,
+        autovalidateMode: AutovalidateMode.disabled,
+        child: Column(
+          children: [
+            Container(
+              constraints: const BoxConstraints(maxWidth: 500),
+              child: TextFormField(
+                decoration: const InputDecoration(
+                  labelText: "Password",
+                  hintText: "Password",
+                  alignLabelWithHint: true,
+                  border: OutlineInputBorder(),
+                ),
+                validator: (s) {
+                  if (s == null) {
+                    return "Please provide a value";
+                  }
+
+                  var encoded = base64Encode(utf8.encode(s));
+                  print(encoded);
+                  if (encoded != _password) {
+                    return "Password is wrong";
+                  }
+
+                  return null;
+                },
+              ),
+            ),
+            const SizedBox(height: 16.0),
+            ElevatedButton(
+              onPressed: () async {
+                var result = _formKey.currentState?.validate();
+                if (result == null || !result) {
+                  print(
+                      "Could not validate password because of an internal error");
+                  return;
+                }
+
+                loginCallback();
+              },
+              child: const Text("Ok"),
+            )
+          ],
+        ),
+      ),
+    );
+  }
+}

lib/main.dart

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+import 'package:flutter/material.dart';
+import 'package:flutter_pwa_test/Content.dart';
+import 'package:flutter_pwa_test/login.dart';
+
+void main() {
+  runApp(const MyApp());
+}
+
+class MyApp extends StatelessWidget {
+  const MyApp({Key? key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      title: 'Flutter Demo',
+      theme: ThemeData(
+        primarySwatch: Colors.blue,
+      ),
+      debugShowCheckedModeBanner: false,
+      home: const MyHomePage(title: 'Flutter Demo Home Page'),
+    );
+  }
+}
+
+class MyHomePage extends StatefulWidget {
+  const MyHomePage({Key? key, required this.title}) : super(key: key);
+
+  final String title;
+
+  @override
+  State<MyHomePage> createState() => _MyHomePageState();
+}
+
+class _MyHomePageState extends State<MyHomePage> {
+  late Widget _content;
+
+  @override
+  void initState() {
+    super.initState();
+    _content = Login(loginCallback: () {
+      setState(() {
+        _content = const Content();
+      });
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: Text(widget.title),
+      ),
+      body: Padding(
+        padding: const EdgeInsets.all(16.0),
+        child: _content,
+      ),
+    );
+  }
+}