// Cthulhu screen reader.
// Copyright (c) 2026 Storm Dragon
// Authors: Storm Dragon, Angus Kola
//
// This program is free software: you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the Free
// Software Foundation, either version 3 of the License, or (at your option)
// any later version.
//
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
// more details.
//
// You should have received a copy of the GNU General Public License along with
// this program. If not, see <https://www.gnu.org/licenses/gpl-3.0.html>.

package config

import (
	"git.stormux.org/storm/cthulhu/internal/datetime"
)

func apply(settings *Settings, values rawSettings) {
	// Keep the established patch order; absent fields leave prior values intact.
	apply_legacy_sound(settings, values)
	apply_legacy_output(settings, values)
	apply_legacy_speech_service(settings, values)
	apply_legacy_reading(settings, values)
	apply_legacy_speech_formats(settings, values)
	apply_legacy_keyboard(settings, values)
	apply_legacy_echo(settings, values)
	apply_legacy_default_voice(settings, values)
}

func apply_legacy_sound(settings *Settings, values rawSettings) {
	if values.EnableSound != nil {
		settings.EnableSound = *values.EnableSound
	}
	if values.SoundVolume != nil {
		settings.SoundVolume = *values.SoundVolume
	}
	if values.SoundSink != nil {
		settings.SoundSink = *values.SoundSink
	}
	if values.SoundTheme != nil {
		settings.SoundTheme = *values.SoundTheme
	}
	if values.PlaySoundForRole != nil {
		settings.PlaySoundForRole = *values.PlaySoundForRole
	}
	if values.PlaySoundForState != nil {
		settings.PlaySoundForState = *values.PlaySoundForState
	}
	if values.PlaySoundForPositionInSet != nil {
		settings.PlaySoundForPositionInSet = *values.PlaySoundForPositionInSet
	}
	if values.SpatializeObjectSounds != nil {
		settings.SpatializeObjectSounds = *values.SpatializeObjectSounds
	}
	if values.RoleSoundPresentation != nil {
		settings.RoleSoundPresentation = *values.RoleSoundPresentation
	}
}

func apply_legacy_output(settings *Settings, values rawSettings) {
	if values.EnableSpeech != nil {
		settings.EnableSpeech = *values.EnableSpeech
	}
	if values.EnableBraille != nil {
		settings.EnableBraille = *values.EnableBraille
	}
	if values.EnableContractedBraille != nil {
		settings.EnableContractedBraille = *values.EnableContractedBraille
	}
	if values.BrailleContractionTable != nil {
		settings.BrailleContractionTable = *values.BrailleContractionTable
	}
	if values.BrailleRolenameStyle != nil {
		settings.Braille.AbbreviateRoles = *values.BrailleRolenameStyle == 0
	}
	if values.BrailleDisableEOL != nil {
		settings.Braille.DisableEOL = *values.BrailleDisableEOL
	}
	if values.BrailleWordWrap != nil {
		settings.Braille.WordWrap = *values.BrailleWordWrap
	}
	if values.BrailleVerbosity != nil {
		settings.Braille.Verbosity = *values.BrailleVerbosity
	}
	if values.BrailleSelectionIndicator != nil {
		settings.Braille.SelectionIndicator = *values.BrailleSelectionIndicator
	}
	if values.BrailleLinkIndicator != nil {
		settings.Braille.LinkIndicator = *values.BrailleLinkIndicator
	}
	if values.BrailleFlashMessages != nil {
		settings.Braille.FlashMessages = *values.BrailleFlashMessages
	}
	if values.BrailleFlashTime != nil {
		settings.Braille.FlashTime = *values.BrailleFlashTime
	}
	if values.BrailleFlashPersistent != nil {
		settings.Braille.FlashPersistent = *values.BrailleFlashPersistent
	}
	if values.BrailleFlashDetailed != nil {
		settings.Braille.FlashDetailed = *values.BrailleFlashDetailed
	}
}

func apply_legacy_speech_service(settings *Settings, values rawSettings) {
	if values.HardwareSpeechDevice != nil {
		settings.HardwareSpeechDevice = *values.HardwareSpeechDevice
	}
	if values.HardwareSpeechBaudRate != nil {
		settings.HardwareSpeechBaudRate = *values.HardwareSpeechBaudRate
	}
	if values.SpeechServerFactory != nil {
		settings.SpeechServerFactory = *values.SpeechServerFactory
	}
	if settings.SpeechServerFactory == "hardwarefactory" && len(values.SpeechServerInfo) > 1 {
		settings.SpeechOutputModule = values.SpeechServerInfo[1]
	}
	if values.SpeakDescription != nil {
		settings.SpeakDescription = *values.SpeakDescription
	}
	if values.SpeechVerbosityLevel != nil {
		settings.SpeechVerbosityLevel = *values.SpeechVerbosityLevel
	}
	if values.SayAllStyle != nil {
		settings.SayAllStyle = map[int]string{0: "line", 1: "sentence"}[*values.SayAllStyle]
	}
}

func apply_legacy_reading(settings *Settings, values rawSettings) {
	if values.Reading.OnlySpeakDisplayedText != nil {
		settings.Reading.OnlySpeakDisplayedText = *values.Reading.OnlySpeakDisplayedText
	}
	if values.Reading.SpeakBlankLines != nil {
		settings.Reading.SpeakBlankLines = *values.Reading.SpeakBlankLines
	}
	if values.Reading.EnableMnemonicSpeaking != nil {
		settings.Reading.EnableMnemonicSpeaking = *values.Reading.EnableMnemonicSpeaking
	}
	if values.Reading.EnablePositionSpeaking != nil {
		settings.Reading.EnablePositionSpeaking = *values.Reading.EnablePositionSpeaking
	}
	if values.Reading.EnableTutorialMessages != nil {
		settings.Reading.EnableTutorialMessages = *values.Reading.EnableTutorialMessages
	}
	if values.Reading.MessagesAreDetailed != nil {
		settings.Reading.MessagesAreDetailed = *values.Reading.MessagesAreDetailed
	}
	if values.Reading.UseColorNames != nil {
		settings.Reading.UseColorNames = *values.Reading.UseColorNames
	}
	if values.Reading.PresentTooltips != nil {
		settings.Reading.PresentTooltips = *values.Reading.PresentTooltips
	}
	if values.Reading.EnableMouseReview != nil {
		settings.Reading.EnableMouseReview = *values.Reading.EnableMouseReview
	}
	if values.Reading.SpeakMisspelledIndicator != nil {
		settings.Reading.SpeakMisspelledIndicator = *values.Reading.SpeakMisspelledIndicator
	}
	if values.Reading.EnablePauseBreaks != nil {
		settings.Reading.EnablePauseBreaks = *values.Reading.EnablePauseBreaks
	}
	if values.Reading.SpeakNumbersAsDigits != nil {
		settings.Reading.SpeakNumbersAsDigits = *values.Reading.SpeakNumbersAsDigits
	}
	if values.Reading.SpeakMultiCaseStringsAsWords != nil {
		settings.Reading.SpeakMultiCaseStringsAsWords = *values.Reading.SpeakMultiCaseStringsAsWords
	}
	if values.Reading.EnableIndentation != nil {
		settings.Reading.EnableIndentation = *values.Reading.EnableIndentation
	}
	if values.Reading.SpeakContextBlockquote != nil {
		settings.Reading.SpeakContextBlockquote = *values.Reading.SpeakContextBlockquote
	}
	if values.Reading.SpeakContextList != nil {
		settings.Reading.SpeakContextList = *values.Reading.SpeakContextList
	}
	if values.Reading.SpeakContextTable != nil {
		settings.Reading.SpeakContextTable = *values.Reading.SpeakContextTable
	}
	if values.Reading.SpeakContextPanel != nil {
		settings.Reading.SpeakContextPanel = *values.Reading.SpeakContextPanel
	}
	if values.Reading.SpeakContextLandmark != nil {
		settings.Reading.SpeakContextLandmark = *values.Reading.SpeakContextLandmark
	}
	if values.Reading.SpeakContextNonLandmarkForm != nil {
		settings.Reading.SpeakContextNonLandmarkForm = *values.Reading.SpeakContextNonLandmarkForm
	}
	if values.Reading.SayAllContextBlockquote != nil {
		settings.Reading.SayAllContextBlockquote = *values.Reading.SayAllContextBlockquote
	}
	if values.Reading.SayAllContextList != nil {
		settings.Reading.SayAllContextList = *values.Reading.SayAllContextList
	}
	if values.Reading.SayAllContextTable != nil {
		settings.Reading.SayAllContextTable = *values.Reading.SayAllContextTable
	}
	if values.Reading.SayAllContextPanel != nil {
		settings.Reading.SayAllContextPanel = *values.Reading.SayAllContextPanel
	}
	if values.Reading.SayAllContextLandmark != nil {
		settings.Reading.SayAllContextLandmark = *values.Reading.SayAllContextLandmark
	}
	if values.Reading.SayAllContextNonLandmarkForm != nil {
		settings.Reading.SayAllContextNonLandmarkForm = *values.Reading.SayAllContextNonLandmarkForm
	}
	if values.Reading.ReadFullRowInGUITable != nil {
		settings.Reading.ReadFullRowInGUITable = *values.Reading.ReadFullRowInGUITable
	}
	if values.Reading.ReadFullRowInDocumentTable != nil {
		settings.Reading.ReadFullRowInDocumentTable = *values.Reading.ReadFullRowInDocumentTable
	}
	if values.Reading.ReadFullRowInSpreadSheet != nil {
		settings.Reading.ReadFullRowInSpreadSheet = *values.Reading.ReadFullRowInSpreadSheet
	}
}

func apply_legacy_speech_formats(settings *Settings, values rawSettings) {
	if values.VerbalizePunctuationStyle != nil {
		settings.VerbalizePunctuationStyle = *values.VerbalizePunctuationStyle
	}
	if values.CapitalizationStyle != nil {
		settings.SetCapitalizationStyle(*values.CapitalizationStyle)
	}
	if values.TimeFormat != nil {
		settings.TimeFormat = *values.TimeFormat
	}
	if values.DateFormat != nil {
		settings.DateFormat = datetime.NormalizeDate(*values.DateFormat)
	}
}

func apply_legacy_keyboard(settings *Settings, values rawSettings) {
	if values.KeyboardLayout != nil {
		settings.KeyboardLayout = *values.KeyboardLayout
	}
	if values.CthulhuModifierKeys != nil {
		settings.CthulhuModifierKeys = append([]string(nil), (*values.CthulhuModifierKeys)...)
	}
}

func apply_legacy_echo(settings *Settings, values rawSettings) {
	if values.UseCustomEchoVoice != nil {
		settings.UseCustomEchoVoice = *values.UseCustomEchoVoice
	}
	if values.UseCustomEchoSpeechServer != nil {
		settings.UseCustomEchoSpeechServer = *values.UseCustomEchoSpeechServer
	}
	if values.UseCustomEchoForKey != nil {
		settings.UseCustomEchoForKey = *values.UseCustomEchoForKey
	}
	if values.UseCustomEchoForCharacter != nil {
		settings.UseCustomEchoForCharacter = *values.UseCustomEchoForCharacter
	}
	if values.UseCustomEchoForWord != nil {
		settings.UseCustomEchoForWord = *values.UseCustomEchoForWord
	}
	if values.UseCustomEchoForSentence != nil {
		settings.UseCustomEchoForSentence = *values.UseCustomEchoForSentence
	}
	if values.EchoVoice != nil {
		mergeVoice(&settings.EchoVoice, *values.EchoVoice)
	}
	if len(values.EchoSpeechServerInfo) > 1 {
		settings.EchoSpeechServer = values.EchoSpeechServerInfo[1]
	}
	if values.EnableKeyEcho != nil {
		settings.EnableKeyEcho = *values.EnableKeyEcho
	}
	if values.EnableEchoByCharacter != nil {
		settings.EnableEchoByCharacter = *values.EnableEchoByCharacter
	}
	if values.EnableEchoByWord != nil {
		settings.EnableEchoByWord = *values.EnableEchoByWord
	}
	if values.EnableEchoBySentence != nil {
		settings.EnableEchoBySentence = *values.EnableEchoBySentence
	}
	if values.EnableAlphabeticKeys != nil {
		settings.EnableAlphabeticKeys = *values.EnableAlphabeticKeys
	}
	if values.EnableNumericKeys != nil {
		settings.EnableNumericKeys = *values.EnableNumericKeys
	}
	if values.EnablePunctuationKeys != nil {
		settings.EnablePunctuationKeys = *values.EnablePunctuationKeys
	}
	if values.EnableSpace != nil {
		settings.EnableSpace = *values.EnableSpace
	}
	if values.EnableModifierKeys != nil {
		settings.EnableModifierKeys = *values.EnableModifierKeys
	}
	if values.EnableFunctionKeys != nil {
		settings.EnableFunctionKeys = *values.EnableFunctionKeys
	}
	if values.EnableActionKeys != nil {
		settings.EnableActionKeys = *values.EnableActionKeys
	}
	if values.EnableNavigationKeys != nil {
		settings.EnableNavigationKeys = *values.EnableNavigationKeys
	}
	if values.EnableDiacriticalKeys != nil {
		settings.EnableDiacriticalKeys = *values.EnableDiacriticalKeys
	}
}

func apply_legacy_default_voice(settings *Settings, values rawSettings) {
	if voice, exists := values.Voices["default"]; exists {
		mergeVoice(&settings.DefaultVoice, voice)
	}
}

func mergeVoice(target *Voice, source Voice) {
	if source.Rate != nil {
		target.Rate = source.Rate
	}
	if source.AveragePitch != nil {
		target.AveragePitch = source.AveragePitch
	}
	if source.Gain != nil {
		target.Gain = source.Gain
	}
	if source.Family != nil {
		family := *source.Family
		target.Family = &family
	}
}