Adding OpenHaystack Mobile app

Co-Authored-By: Lukas Burg <lukas.burg@hemalu.de>

openhaystack-mobile/lib/main.dart

@@ -0,0 +1,114 @@
+import 'dart:async';
+import 'dart:io';
+
+import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+import 'package:receive_sharing_intent/receive_sharing_intent.dart';
+import 'package:openhaystack_mobile/dashboard/dashboard_desktop.dart';
+import 'package:openhaystack_mobile/dashboard/dashboard_mobile.dart';
+import 'package:openhaystack_mobile/accessory/accessory_registry.dart';
+import 'package:openhaystack_mobile/item_management/item_file_import.dart';
+import 'package:openhaystack_mobile/location/location_model.dart';
+import 'package:openhaystack_mobile/preferences/user_preferences_model.dart';
+import 'package:openhaystack_mobile/splashscreen.dart';
+
+void main() {
+  runApp(const MyApp());
+}
+
+class MyApp extends StatelessWidget {
+  const MyApp({Key? key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return MultiProvider(
+      providers: [
+        ChangeNotifierProvider(create: (ctx) => AccessoryRegistry()),
+        ChangeNotifierProvider(create: (ctx) => UserPreferences()),
+        ChangeNotifierProvider(create: (ctx) => LocationModel()),
+      ],
+      child: MaterialApp(
+        title: 'OpenHaystack',
+        theme: ThemeData(
+          primarySwatch: Colors.blue,
+        ),
+        darkTheme: ThemeData.dark(),
+        home:  const AppLayout(),
+      ),
+    );
+  }
+}
+
+class AppLayout extends StatefulWidget {
+  const AppLayout({Key? key}) : super(key: key);
+
+  @override
+  State<AppLayout> createState() => _AppLayoutState();
+}
+
+class _AppLayoutState extends State<AppLayout> {
+  StreamSubscription? _intentDataStreamSubscription;
+
+  @override
+  initState() {
+    super.initState();
+
+    _intentDataStreamSubscription = ReceiveSharingIntent.getMediaStream()
+      .listen(handleFileSharingIntent, onError: print);
+    ReceiveSharingIntent.getInitialMedia()
+      .then(handleFileSharingIntent);
+
+    var accessoryRegistry = Provider.of<AccessoryRegistry>(context, listen: false);
+    accessoryRegistry.loadAccessories();
+  }
+
+   Future<void>  handleFileSharingIntent(List<SharedMediaFile> files) async {
+    // Received a sharing intent with a number of files.
+    // Import the accessories for each device in sequence.
+    // If no files are shared do nothing
+    for (var file in files) {
+      if (file.type == SharedMediaType.FILE) {
+        // On iOS the file:// prefix has to be stripped to access the file path
+        String path = Platform.isIOS
+          ? Uri.decodeComponent(file.path.replaceFirst('file://', ''))
+          : file.path;
+        Navigator.push(context, MaterialPageRoute(
+          builder: (context) => ItemFileImport(filePath: path),
+        ));
+      }
+    }
+  }
+
+  @override
+  void dispose() {
+    _intentDataStreamSubscription?.cancel();
+    super.dispose();
+  }
+
+  @override
+  void didChangeDependencies() {
+    // Precache logo for faster load times (e.g. on the splash screen)
+    precacheImage(const AssetImage('assets/OpenHaystackIcon.png'), context);
+    super.didChangeDependencies();
+  }
+
+
+  @override
+  Widget build(BuildContext context) {
+    bool isInitialized = context.watch<UserPreferences>().initialized;
+    bool isLoading = context.watch<AccessoryRegistry>().loading;
+    if (!isInitialized || isLoading) {
+      return const Splashscreen();
+    }
+
+    Size screenSize = MediaQuery.of(context).size;
+    Orientation orientation = MediaQuery.of(context).orientation;
+
+    // TODO: More advanced media query handling
+    if (screenSize.width < 800) {
+      return const DashboardMobile();
+    } else {
+      return const DashboardDesktop();
+    }
+  }
+}