feat: build windows dll and call dll in flutter

ui/embed.go

@@ -1,3 +1,4 @@
+//go:build !c
 package ui
 
 import "embed"

ui/embed_c.go

@@ -0,0 +1,6 @@
+//go:build c
+package ui
+
+import "embed"
+
+var Web embed.FS

ui/lib/ffi/backend.dart

@@ -0,0 +1,41 @@
+import 'dart:ffi';
+import 'dart:io';
+import 'dart:isolate';
+
+import 'package:ui/widgets/utils.dart' as Utils;
+
+
+class FFIBackend {
+  final lib = DynamicLibrary.open(libname());
+
+  static String libname() {
+    if (Utils.isDesktop()) {
+      if (Platform.isWindows) {
+        return 'libpolaris.dll';
+      } else if (Platform.isLinux) {
+        return 'libpolaris.so';
+      } else if (Platform.isMacOS) {
+        return 'libpolaris.dylib';
+      } else {
+        throw UnsupportedError(
+            'Unsupported platform: ${Platform.operatingSystem}');
+      }
+    } else {
+      return "";
+    }
+  }
+
+  Future<void> start() async {
+    var s = lib
+        .lookup<NativeFunction<Void Function()>>('Start')
+        .asFunction<void Function()>();
+        
+    return Isolate.run(s);
+  }
+  Future<void> stop() async {
+    var s = lib
+        .lookup<NativeFunction<Void Function()>>('Stop')
+        .asFunction<void Function()>();
+    return s();
+  }
+}

ui/lib/main.dart

@@ -4,6 +4,7 @@ import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:go_router/go_router.dart';
 import 'package:intl/date_symbol_data_local.dart';
 import 'package:ui/activity.dart';
+import 'package:ui/ffi/backend.dart';
 import 'package:ui/init_wizard.dart';
 import 'package:ui/login_page.dart';
 import 'package:ui/movie_watchlist.dart';
@@ -15,7 +16,11 @@ import 'package:ui/tv_details.dart';
 import 'package:ui/welcome_page.dart';
 import 'package:ui/widgets/utils.dart';
 
-void main() {
+void main() async {
+  if (isDesktop()) {
+    FFIBackend().start();
+  }
+
   initializeDateFormatting()
       .then((_) => runApp(const ProviderScope(child: MyApp())));
 }

ui/lib/providers/APIs.dart

@@ -5,6 +5,7 @@ import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:go_router/go_router.dart';
 import 'package:ui/providers/server_response.dart';
+import 'package:ui/widgets/utils.dart';
 
 class APIs {
   static final _baseUrl = baseUrl();
@@ -68,6 +69,9 @@ class APIs {
 
   static String baseUrl() {
     if (kReleaseMode) {
+      if (isDesktop()) {
+        return "http://127.0.0.1:8080";
+      }
       return "";
     }
     return "http://127.0.0.1:8080";

ui/pubspec.lock

@@ -97,6 +97,14 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.3.2"
+  ffi:
+    dependency: "direct main"
+    description:
+      name: ffi
+      sha256: "289279317b4b16eb2bb7e271abccd4bf84ec9bdcbe999e278a94b804f5630418"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.1.4"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -547,5 +555,5 @@ packages:
     source: hosted
     version: "1.1.1"
 sdks:
-  dart: ">=3.7.0-0 <4.0.0"
+  dart: ">=3.7.0 <4.0.0"
   flutter: ">=3.27.0"

ui/pubspec.yaml

@@ -31,6 +31,7 @@ dependencies:
   flutter:
     sdk: flutter
   dio: ^5.7.0
+  ffi: ^2.0.0
 
 
   # The following adds the Cupertino Icons font to your application.

ui/windows/CMakeLists.txt

@@ -81,6 +81,9 @@ install(FILES "${FLUTTER_ICU_DATA_FILE}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}
 install(FILES "${FLUTTER_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
   COMPONENT Runtime)
 
+install(FILES "${CMAKE_CURRENT_SOURCE_DIR}/libpolaris.dll" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+  COMPONENT Runtime)
+
 if(PLUGIN_BUNDLED_LIBRARIES)
   install(FILES "${PLUGIN_BUNDLED_LIBRARIES}"
     DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"