//go:build windows

package startup

import (
	"fmt"
	"os"

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

const registryKey = `SOFTWARE\Microsoft\Windows\CurrentVersion\Run`
const appName = "PrivateVoice Input"

var legacyAppNames = []string{"VoiceSnap"}

func isEnabled() bool {
	removeLegacyValues()

	key, err := registry.OpenKey(registry.CURRENT_USER, registryKey, registry.QUERY_VALUE)
	if err != nil {
		return false
	}
	defer key.Close()

	val, _, err := key.GetStringValue(appName)
	return err == nil && val != ""
}

func setEnabled(enable bool) error {
	key, err := registry.OpenKey(registry.CURRENT_USER, registryKey, registry.SET_VALUE)
	if err != nil {
		return fmt.Errorf("failed to open registry key: %w", err)
	}
	defer key.Close()

	if enable {
		exe, err := os.Executable()
		if err != nil {
			return err
		}
		deleteLegacyValues(key)
		return key.SetStringValue(appName, fmt.Sprintf(`"%s"`, exe))
	}

	err = key.DeleteValue(appName)
	deleteLegacyValues(key)
	if err != nil && err != registry.ErrNotExist {
		return err
	}
	return nil
}

func deleteLegacyValues(key registry.Key) {
	for _, name := range legacyAppNames {
		_ = key.DeleteValue(name)
	}
}

func removeLegacyValues() {
	key, err := registry.OpenKey(registry.CURRENT_USER, registryKey, registry.SET_VALUE)
	if err != nil {
		return
	}
	defer key.Close()
	deleteLegacyValues(key)
}