//go:build windows

package ui

import "golang.org/x/sys/windows/registry"

// systemPrefersDark queries the Windows personalization registry key
// to find out whether the user picked dark mode for apps. Returns
// false on any read error so the default stays "light".
func systemPrefersDark() bool {
	k, err := registry.OpenKey(
		registry.CURRENT_USER,
		`Software\Microsoft\Windows\CurrentVersion\Themes\Personalize`,
		registry.QUERY_VALUE,
	)
	if err != nil {
		return false
	}
	defer k.Close()
	v, _, err := k.GetIntegerValue("AppsUseLightTheme")
	if err != nil {
		return false
	}
	return v == 0
}