main.go

package main

import (
	"embed"
	"os"
	"path/filepath"

	"github.com/wailsapp/wails/v2"
	"github.com/wailsapp/wails/v2/pkg/options"
	"github.com/wailsapp/wails/v2/pkg/options/assetserver"
)

//go:embed all:frontend/dist
var assets embed.FS

func main() {
	// 单实例：已有实例在运行则把路径写入临时文件、唤醒其窗口后退出本进程。
	// 必须先写文件再唤醒窗口：旧实例的轮询线程发现文件后发出 open-path 事件并跳转。
	if !ensureSingleInstance() {
		if len(os.Args) > 1 {
			_ = os.WriteFile(filepath.Join(os.TempDir(), openPathFile), []byte(os.Args[1]), 0o644)
		}
		wakeExistingWindow()
		return
	}

	// 记录启动参数（外部程序通过 %V 传入的文件夹路径 / CLSID）
	if len(os.Args) > 1 {
		startupArg = os.Args[1]
	}

	// Create an instance of the app structure
	app := NewApp()

	// Create application with options
	err := wails.Run(&options.App{
		Title:     "文件管理器",
		Width:     1280,
		Height:    800,
		MinWidth:  900,
		MinHeight: 600,
		AssetServer: &assetserver.Options{
			Assets: assets,
		},
		BackgroundColour: &options.RGBA{R: 250, G: 250, B: 250, A: 1},
		OnStartup:        app.startup,
		OnBeforeClose:    app.beforeClose,
		Bind: []interface{}{
			app,
		},
	})

	if err != nil {
		println("Error:", err.Error())
	}
}