feat(neon): Add neon web platform

Signed-off-by: jld3103 <jld3103yt@gmail.com>

packages/neon/neon/lib/neon.dart

@@ -1,5 +1,6 @@
 import 'dart:async';
 
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_native_splash/flutter_native_splash.dart';
 import 'package:neon/src/app.dart';
@@ -29,7 +30,10 @@ Future<void> runNeon({
   @visibleForTesting final bool nextPushDisabled = false,
 }) async {
   final binding = bindingOverride ?? WidgetsFlutterBinding.ensureInitialized();
-  FlutterNativeSplash.preserve(widgetsBinding: binding);
+
+  if (!kIsWeb) {
+    FlutterNativeSplash.preserve(widgetsBinding: binding);
+  }
 
   await NeonPlatform.setup();
   await RequestManager.instance.initCache();

packages/neon/neon/lib/src/app.dart

@@ -2,6 +2,7 @@ import 'dart:async';
 import 'dart:convert';
 
 import 'package:collection/collection.dart';
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_native_splash/flutter_native_splash.dart';
 import 'package:meta/meta.dart';
@@ -281,7 +282,9 @@ class _NeonAppState extends State<NeonApp> with WidgetsBindingObserver, tray.Tra
         builder: (final context, final options, final _) => StreamBuilder<Account?>(
           stream: _accountsBloc.activeAccount,
           builder: (final context, final activeAccountSnapshot) {
-            FlutterNativeSplash.remove();
+            if (!kIsWeb) {
+              FlutterNativeSplash.remove();
+            }
             return ResultBuilder<core.OcsGetCapabilitiesResponseApplicationJson_Ocs_Data?>.behaviorSubject(
               subject: activeAccountSnapshot.hasData
                   ? _accountsBloc.getCapabilitiesBlocFor(activeAccountSnapshot.data!).capabilities

packages/neon/neon/lib/src/platform/platform.dart

@@ -1,8 +1,9 @@
 import 'dart:async';
 
-import 'package:meta/meta.dart';
+import 'package:flutter/foundation.dart';
 import 'package:neon/src/platform/android.dart';
 import 'package:neon/src/platform/linux.dart';
+import 'package:neon/src/platform/web.dart';
 import 'package:universal_io/io.dart';
 
 /// Implements platform specific functionality and exposes the availability of certain features.
@@ -21,7 +22,9 @@ abstract interface class NeonPlatform {
       return;
     }
 
-    if (Platform.isAndroid) {
+    if (kIsWeb) {
+      _platform = const WebNeonPlatform();
+    } else if (Platform.isAndroid) {
       _platform = const AndroidNeonPlatform();
     } else if (Platform.isLinux) {
       _platform = const LinuxNeonPlatform();
@@ -64,7 +67,7 @@ abstract interface class NeonPlatform {
   /// This is needed to compensate lacking support of `https://pub.dev/packages/file_picker`.
   abstract final bool shouldUseFileDialog;
 
-  FutureOr<String> get userAccessibleAppDataPath;
+  FutureOr<String?> get userAccessibleAppDataPath;
 
   FutureOr<void> init();
 }

packages/neon/neon/lib/src/platform/web.dart

@@ -0,0 +1,44 @@
+import 'dart:async';
+
+import 'package:meta/meta.dart';
+import 'package:neon/src/platform/platform.dart';
+import 'package:sqflite_common_ffi/sqflite_ffi.dart';
+import 'package:sqflite_common_ffi_web/sqflite_ffi_web.dart';
+
+@immutable
+@internal
+class WebNeonPlatform implements NeonPlatform {
+  const WebNeonPlatform();
+
+  @override
+  bool get canUseCamera => false;
+
+  @override
+  bool get canUsePushNotifications => false;
+
+  @override
+  bool get canUseQuickActions => false;
+
+  @override
+  bool get canUseSystemTray => false;
+
+  @override
+  bool get canUseWebView => false;
+
+  @override
+  bool get canUseWindowManager => false;
+
+  @override
+  bool get canUseSharing => true;
+
+  @override
+  bool get shouldUseFileDialog => throw UnimplementedError();
+
+  @override
+  FutureOr<String>? get userAccessibleAppDataPath => null;
+
+  @override
+  FutureOr<void> init() {
+    databaseFactory = databaseFactoryFfiWeb;
+  }
+}

packages/neon/neon/lib/src/utils/request_manager.dart

@@ -231,9 +231,9 @@ class Cache {
       return;
     }
 
-    final cacheDir = await getApplicationCacheDirectory();
+    final cacheDir = kIsWeb ? '' : (await getApplicationCacheDirectory()).path;
     _database = await openDatabase(
-      p.join(cacheDir.path, 'cache.db'),
+      p.join(cacheDir, 'cache.db'),
       version: 1,
       onCreate: (final db, final version) async {
         await db.execute('CREATE TABLE cache (id INTEGER PRIMARY KEY, key TEXT, value TEXT, UNIQUE(key))');

packages/neon/neon/pubspec.yaml

@@ -48,6 +48,7 @@ dependencies:
       path: packages/sort_box
   sqflite: ^2.0.0
   sqflite_common_ffi: ^2.2.8-2
+  sqflite_common_ffi_web: ^0.4.0
   tray_manager: ^0.2.0
   unifiedpush: ^5.0.0
   unifiedpush_android: ^2.0.0