feat: build windows dll and call dll in flutter

Makefile

@@ -2,5 +2,5 @@
 
 windows:
 	@echo "Building for Windows..."
-	go build  -ldflags="-X polaris/db.Version=$(git describe --tags --long)" -buildmode=c-shared -o ui/windows/libpolaris.dll ./cmd/binding
+	go build -tags c -ldflags="-X polaris/db.Version=$(git describe --tags --long)" -buildmode=c-shared -o ui/windows/libpolaris.dll ./cmd/binding
 	cd ui && flutter build windows

cmd/binding/main.go

@@ -1,11 +1,21 @@
 package main
 
 import "C"
-import "polaris/cmd"
+import (
+	"os"
+	"polaris/cmd"
+	"polaris/log"
+)
 
 func main() {}
 
 //export Start
 func Start() {
-	cmd.Start()
+	cmd.Start(true)
+}
+
+//export Stop
+func Stop() {
+	log.Infof("stop polaris")
+	os.Exit(0)
 }

cmd/doc.go

@@ -1,15 +1,20 @@
 package cmd
 
 import (
+	"os"
 	"polaris/db"
 	"polaris/log"
 	"polaris/server"
 )
 
+func Start(sharedLib bool) {
+	if sharedLib || os.Getenv("GIN_MODE") == "release" {
+		log.InitLogger(true)
+	} else {
+		log.InitLogger(false)
+	}
 
-func Start() {
 	log.Infof("------------------- Starting Polaris ---------------------")
-
 	dbClient, err := db.Open()
 	if err != nil {
 		log.Panicf("init db error: %v", err)

cmd/polaris/polaris.go

@@ -3,5 +3,5 @@ package main
 import "polaris/cmd"
 
 func main() {
-	cmd.Start()
+	cmd.Start(false)
 }

log/log.go

@@ -15,12 +15,12 @@ var atom zap.AtomicLevel
 
 const dataPath = "./data"
 
-func init() {
+func InitLogger(toFile bool) {
 	atom = zap.NewAtomicLevel()
 	atom.SetLevel(zap.DebugLevel)
 
 	w := zapcore.Lock(os.Stdout)
-	if os.Getenv("GIN_MODE") == "release" {
+	if toFile {
 		w = zapcore.AddSync(&lumberjack.Logger{
 			Filename:   filepath.Join(dataPath, "logs", "polaris.log"),
 			MaxSize:    50, // megabytes

server/systems.go

@@ -20,7 +20,7 @@ type LogFile struct {
 func (s *Server) GetAllLogs(c *gin.Context) (interface{}, error) {
 	fs, err := os.ReadDir(db.LogPath)
 	if err != nil {
-		return nil, errors.Wrap(err, "read log dir")
+		return []LogFile{}, nil
 	}
 	var logs []LogFile
 	for _, f := range fs {

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}"