// backend\sharedelete_windows.go

//go:build windows

package main

import (
	"os"
	"syscall"
)

func openForReadShareDelete(path string) (*os.File, error) {
	p, err := syscall.UTF16PtrFromString(path)
	if err != nil {
		return nil, err
	}

	// Wichtig: FILE_SHARE_DELETE erlaubt Rename/Move/Delete während Lesen/Streaming
	h, err := syscall.CreateFile(
		p,
		syscall.GENERIC_READ,
		syscall.FILE_SHARE_READ|syscall.FILE_SHARE_WRITE|syscall.FILE_SHARE_DELETE,
		nil,
		syscall.OPEN_EXISTING,
		syscall.FILE_ATTRIBUTE_NORMAL,
		0,
	)
	if err != nil {
		return nil, err
	}

	return os.NewFile(uintptr(h), path), nil
}