package services

import (
	"voicesnap/internal/config"
	"voicesnap/internal/dock"
	"voicesnap/internal/language"
	"voicesnap/internal/model"
	"voicesnap/internal/startup"
)

// ConfigService provides configuration read/write methods to the frontend.
type ConfigService struct {
	cfg            *config.Config
	localeDetector language.SystemLocaleDetector
}

func NewConfigService(cfg *config.Config) *ConfigService {
	return NewConfigServiceWithDetector(cfg, language.NewSystemDetector())
}

func NewConfigServiceWithDetector(cfg *config.Config, detector language.SystemLocaleDetector) *ConfigService {
	if detector == nil {
		detector = language.NewSystemDetector()
	}
	return &ConfigService{cfg: cfg, localeDetector: detector}
}

// GetConfig returns the current configuration.
func (s *ConfigService) GetConfig() *config.Config {
	return s.cfg
}

// GetLanguageSettings returns the configured and effective UI language.
func (s *ConfigService) GetLanguageSettings() language.LanguageSettings {
	return language.Resolve(s.cfg.LanguageMode, s.cfg.LanguageID, s.localeDetector)
}

// SetLanguageAuto makes the UI language follow the system language.
func (s *ConfigService) SetLanguageAuto() language.LanguageSettings {
	s.cfg.LanguageMode = config.LanguageModeAuto
	resolved := language.Resolve(s.cfg.LanguageMode, s.cfg.LanguageID, s.localeDetector)
	s.cfg.LanguageID = resolved.EffectiveLanguageID
	config.Save(s.cfg)
	return language.Resolve(s.cfg.LanguageMode, s.cfg.LanguageID, s.localeDetector)
}

// SetLanguageManual persists a user-selected UI language.
func (s *ConfigService) SetLanguageManual(languageID string) language.LanguageSettings {
	s.cfg.LanguageMode = config.LanguageModeManual
	s.cfg.LanguageID = model.NormalizeLanguageID(languageID)
	config.Save(s.cfg)
	return language.Resolve(s.cfg.LanguageMode, s.cfg.LanguageID, s.localeDetector)
}

// SetAutoHide sets the auto-hide indicator preference.
func (s *ConfigService) SetAutoHide(enabled bool) {
	s.cfg.AutoHide = enabled
	config.Save(s.cfg)
}

// GetAutoHide returns the auto-hide preference.
func (s *ConfigService) GetAutoHide() bool {
	return s.cfg.AutoHide
}

// SetSoundFeedback sets the sound feedback preference.
func (s *ConfigService) SetSoundFeedback(enabled bool) {
	s.cfg.SoundFeedback = enabled
	config.Save(s.cfg)
}

// GetSoundFeedback returns the sound feedback preference.
func (s *ConfigService) GetSoundFeedback() bool {
	return s.cfg.SoundFeedback
}

// SetHotkeyMode sets the voice input interaction mode.
func (s *ConfigService) SetHotkeyMode(mode string) {
	s.cfg.HotkeyMode = config.NormalizeHotkeyMode(mode)
	config.Save(s.cfg)
}

// GetHotkeyMode returns the voice input interaction mode.
func (s *ConfigService) GetHotkeyMode() string {
	s.cfg.HotkeyMode = config.NormalizeHotkeyMode(s.cfg.HotkeyMode)
	return s.cfg.HotkeyMode
}

// SetCopyToClipboard sets whether recognized text remains in the clipboard after input.
func (s *ConfigService) SetCopyToClipboard(enabled bool) {
	s.cfg.CopyToClipboard = enabled
	config.Save(s.cfg)
}

// GetCopyToClipboard returns whether recognized text remains in the clipboard after input.
func (s *ConfigService) GetCopyToClipboard() bool {
	return s.cfg.CopyToClipboard
}

// SetHideDockIcon sets whether the app should hide its Dock icon on macOS.
func (s *ConfigService) SetHideDockIcon(enabled bool) {
	s.cfg.HideDockIcon = enabled
	config.Save(s.cfg)
	dock.SetHidden(enabled)
}

// GetHideDockIcon returns whether the Dock icon should be hidden.
func (s *ConfigService) GetHideDockIcon() bool {
	return s.cfg.HideDockIcon
}

// IsStartupEnabled returns whether the app is set to start at login.
func (s *ConfigService) IsStartupEnabled() bool {
	return startup.IsEnabled()
}

// SetStartupEnabled enables or disables start at login.
func (s *ConfigService) SetStartupEnabled(enabled bool) error {
	return startup.SetEnabled(enabled)
}