[feat] start sqflite_common_ffi_async based on sqlite_async

sqflite_common_ffi/README.md

@@ -3,10 +3,8 @@
 [sqflite](https://pub.dev/packages/sqflite) based ffi implementation. Based
 on [`sqlite3`](https://pub.dev/packages/sqlite3). Thanks to [Simon Binder](https://github.com/simolus3)
 
-Currently supported on Linux, MacOS and Windows on both Flutter and Dart VM.
-
-While not tested extensively, it also
-works on iOS and Android (using [sqlite3_flutter_libs](https://pub.dev/packages/sqlite3_flutter_libs) - Thanks
+* Works on Linux, MacOS and Windows on both Flutter and Dart VM.
+* Works on iOS and Android (using [sqlite3_flutter_libs](https://pub.dev/packages/sqlite3_flutter_libs) - Thanks
 to [Simon Binder](https://github.com/simolus3))
 
 It allows also mocking sqflite during regular flutter unit test (i.e. not using the emulator/simulator).

sqflite_test_app/lib/main_ffi_async.dart

@@ -0,0 +1,44 @@
+import 'dart:io';
+
+import 'package:flutter/material.dart';
+import 'package:sqflite/sqflite.dart';
+import 'package:sqflite_common_ffi/sqflite_ffi.dart';
+import 'package:sqflite_common_ffi_async/sqflite_ffi_async.dart';
+import 'package:sqflite_example/main.dart';
+
+Future<void> main() async {
+  await mainFfiAsync();
+}
+
+/// Run using ffi (io or web)
+Future<void> mainFfiAsync() async {
+  await initFfiAsync();
+  await runFfiAsync();
+}
+
+/// Init Ffi for io or web
+///
+/// if [noWorker] is true, no isolate is used on io and no web worker is used on the web.
+Future<void> initFfiAsync() async {
+  // getDatabasesPath implementation is lame, use the default one
+  // but we could also use path_provider
+  var isSqfliteCompatible =
+      (Platform.isAndroid || Platform.isIOS || Platform.isMacOS);
+  //DatabaseFactory? original;
+  // Save original for iOS & Android
+
+  sqfliteFfiInit();
+  databaseFactoryOrNull = databaseFactoryFfiAsync;
+
+  WidgetsFlutterBinding.ensureInitialized();
+  // Use sqflite databases path provider (ffi implementation is lame))
+  if (isSqfliteCompatible) {
+    await databaseFactory.setDatabasesPath(
+        await databaseFactorySqflitePlugin.getDatabasesPath());
+  }
+}
+
+/// Run example app.
+Future<void> runFfiAsync() async {
+  mainExampleApp();
+}

sqflite_test_app/pubspec.yaml

@@ -27,6 +27,8 @@ dependencies:
   cupertino_icons: '>=0.1.3'
   sqflite: '>=2.0.0-nullsafety.2'
   sqflite_common_ffi:
+  sqflite_common_ffi_async:
+    path: ../packages/sqflite_common_ffi_async
   sqflite_example:
     path: ../sqflite/example
   flutter_web_plugins: