feat: execute durable client commands through supervisor

cmd/rvbox/service_windows.go

@@ -0,0 +1,42 @@
+//go:build windows
+
+package main
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+
+	"github.com/rvbox/rvbox/internal/client/windowsservice"
+	"golang.org/x/sys/windows/svc"
+)
+
+func defaultClientConfigPath() string {
+	root := os.Getenv("ProgramData")
+	if root == "" {
+		root = `C:\ProgramData`
+	}
+	return filepath.Join(root, "RVBox", "client.toml")
+}
+
+func runService(configPath string, diagnostics io.Writer) error {
+	inService, err := svc.IsWindowsService()
+	if err != nil {
+		return fmt.Errorf("detect service control manager context: %w", err)
+	}
+	if !inService {
+		return errors.New("--service is reserved for the installed Windows service")
+	}
+	return runWindowsService(configPath, diagnostics)
+}
+
+func runWindowsService(configPath string, diagnostics io.Writer) error {
+	return windowsservice.Run(func(ctx context.Context) error { return runClientDaemon(ctx, configPath, diagnostics) })
+}
+
+func runTray(configPath string, diagnostics io.Writer) error {
+	return errors.New("Windows tray frontend is not available in this build")
+}