// Copyright (c) 2026 Storm Dragon
// Authors: Storm Dragon, Angus Kola
// SPDX-License-Identifier: GPL-3.0-or-later

package preferences

import (
	"math"
	"reflect"
	"testing"

	"git.stormux.org/storm/cthulhu/internal/config"
)

func TestSpeechValuesMergeRoundsNumbersAndPreservesInheritance(t *testing.T) {
	settings := config.DefaultSettings()
	values := FromSettings(settings)
	rate, pitch, gain := 61.29999999999999, 4.499999999999998, 4.999999999999999
	values.Rate, values.Pitch, values.Volume = &rate, &pitch, &gain
	values.UppercaseVoice.AveragePitch = &pitch
	values.HyperlinkVoice.Rate = &rate
	values.SystemVoice.Gain = &gain
	values.EchoVoice = config.Voice{Rate: &rate, AveragePitch: &pitch, Gain: &gain}
	merged, err := values.Merge(settings)
	if err != nil {
		t.Fatal(err)
	}
	if *merged.DefaultVoice.Rate != 61.3 || *merged.DefaultVoice.AveragePitch != 4.5 || *merged.DefaultVoice.Gain != 5 ||
		*merged.UppercaseVoice.AveragePitch != 4.5 || *merged.HyperlinkVoice.Rate != 61.3 || *merged.SystemVoice.Gain != 5 ||
		*merged.EchoVoice.Rate != 61.3 || *merged.EchoVoice.AveragePitch != 4.5 || *merged.EchoVoice.Gain != 5 {
		t.Fatal("speech values retained floating-point noise")
	}
	if merged.UppercaseVoice.Rate != nil || merged.HyperlinkVoice.Gain != nil || merged.SystemVoice.AveragePitch != nil {
		t.Fatal("rounding turned inheritance into explicit settings")
	}
	if pitch != 4.499999999999998 {
		t.Fatal("merging mutated caller's values")
	}
	for _, invalid := range []float64{9.01, -0.01, math.NaN(), math.Inf(1)} {
		values.Pitch = &invalid
		if _, err := values.Merge(settings); err == nil {
			t.Fatalf("rounding hid invalid pitch %g", invalid)
		}
	}
}

func TestSoundValuesDefaultAndMerge(t *testing.T) {
	settings := config.DefaultSettings()
	values := FromSettings(settings)
	if !values.EnableSound || !values.PlaySoundForRole || !values.PlaySoundForState ||
		!values.PlaySoundForPositionInSet ||
		values.ProgressBar.OutputMode != "beep" || values.SpatializeObjectSounds {
		t.Fatalf("default sound checkboxes = %+v", values)
	}

	values.EnableSound = false
	values.EnableBraille = true
	values.EnableContractedBraille = true
	values.BrailleContractionTable = "en-us-g2.ctb"
	values.SoundVolume = 0.75
	values.SoundSink = "pulse"
	values.SoundTheme = "none"
	values.PlaySoundForRole = false
	values.PlaySoundForState = false
	values.PlaySoundForPositionInSet = false
	values.SpatializeObjectSounds = true
	values.ProgressBar.OutputMode = "off"
	values.ProgressBar.ReportBackground = true
	values.RoleSoundPresentation = "speech_only"

	merged, err := values.Merge(settings)
	if err != nil {
		t.Fatal(err)
	}
	if got := FromSettings(merged); !reflect.DeepEqual(got, values) {
		t.Fatalf("sound values did not round trip:\n got %+v\nwant %+v", got, values)
	}
}

func TestReadingValuesRoundTrip(t *testing.T) {
	settings := config.DefaultSettings()
	values := FromSettings(settings)
	if values.Reading.OnlySpeakDisplayedText || !values.Reading.SpeakBlankLines ||
		!values.SpeakDescription || values.Reading.ReadFullRowInSpreadSheet ||
		!values.EnableSpeech || !values.Reading.EnablePauseBreaks ||
		values.Reading.SpeakNumbersAsDigits || values.Reading.SpeakMultiCaseStringsAsWords ||
		values.Reading.EnableIndentation || values.Reading.PhoneticCharacterHints {
		t.Fatalf("default reading values = %+v", values)
	}

	values.EnableSpeech = false
	values.SayAllStyle = "sentence"
	values.SpeechVerbosityLevel = 0
	values.Reading.OnlySpeakDisplayedText = true
	values.Reading.EnablePauseBreaks = false
	values.Reading.SpeakNumbersAsDigits = true
	values.Reading.SpeakMultiCaseStringsAsWords = true
	values.Reading.EnableIndentation = true
	values.Reading.PhoneticCharacterHints = true
	values.Reading.SpeakBlankLines = false
	values.Reading.EnableMnemonicSpeaking = true
	values.Reading.EnablePositionSpeaking = true
	values.Reading.EnableTutorialMessages = true
	values.Reading.MessagesAreDetailed = false
	values.Reading.UseColorNames = false
	values.Reading.PresentTooltips = true
	values.Reading.EnableMouseReview = true
	values.Reading.SpeakMisspelledIndicator = false
	values.Reading.SpeakContextBlockquote = false
	values.Reading.SpeakContextList = false
	values.Reading.SpeakContextTable = false
	values.Reading.SpeakContextPanel = false
	values.Reading.SpeakContextLandmark = false
	values.Reading.SpeakContextNonLandmarkForm = false
	values.Reading.SayAllContextBlockquote = false
	values.Reading.SayAllContextList = false
	values.Reading.SayAllContextTable = false
	values.Reading.SayAllContextPanel = false
	values.Reading.SayAllContextLandmark = false
	values.Reading.SayAllContextNonLandmarkForm = false
	values.Reading.ReadFullRowInGUITable = false
	values.Reading.ReadFullRowInDocumentTable = false
	values.Reading.ReadFullRowInSpreadSheet = true
	values.SpeakDescription = false

	merged, err := values.Merge(settings)
	if err != nil {
		t.Fatal(err)
	}
	if got := FromSettings(merged); !reflect.DeepEqual(got, values) {
		t.Fatalf("reading values did not round trip:\n got %+v\nwant %+v", got, values)
	}
}

func TestSpeechValuesRoundTrip(t *testing.T) {
	settings := config.DefaultSettings()
	settings.SpeechHistoryLimit = 1000
	family := &config.VoiceFamily{Name: "Generic Voice", Lang: "en", Dialect: "US", Variant: "male"}
	settings.SpeechOutputModule = "espeak-ng"
	settings.DefaultVoice.Family = family

	values := FromSettings(settings)
	if values.SpeechOutputModule != "espeak-ng" || values.SpeechVoiceFamily != family || values.SpeechHistoryLimit != 1000 {
		t.Fatalf("speech values = %+v", values)
	}
	merged, err := values.Merge(settings)
	if err != nil {
		t.Fatal(err)
	}
	if merged.SpeechOutputModule != "espeak-ng" || merged.DefaultVoice.Family != family || merged.SpeechHistoryLimit != 1000 {
		t.Fatalf("merged speech values = %+v", merged)
	}
}

func TestKeyboardValuesMergeAndOwnership(t *testing.T) {
	settings := config.DefaultSettings()
	values := FromSettings(settings)
	values.KeyboardLayout = 2
	values.CthulhuModifierKeys = []string{"Caps_Lock", "Insert"}
	merged, err := values.Merge(settings)
	if err != nil {
		t.Fatal(err)
	}
	if merged.KeyboardLayout != 2 || !reflect.DeepEqual(merged.CthulhuModifierKeys, values.CthulhuModifierKeys) {
		t.Fatalf("keyboard settings were not merged: %+v", merged)
	}
	values.CthulhuModifierKeys[0] = "KP_Insert"
	if merged.CthulhuModifierKeys[0] != "Caps_Lock" {
		t.Fatal("merged modifiers alias the UI values")
	}
	values.CthulhuModifierKeys = []string{}
	merged, err = values.Merge(settings)
	if err != nil || len(merged.CthulhuModifierKeys) != 0 {
		t.Fatalf("cannot disable all modifiers: %v", err)
	}
}

func TestCapitalCheckboxesRoundTrip(t *testing.T) {
	for mask := 0; mask < 8; mask++ {
		settings := config.DefaultSettings()
		values := FromSettings(settings)
		values.RaisePitchForCapitals = mask&1 != 0
		values.BeepForCapitals = mask&2 != 0
		values.SayCapForCapitals = mask&4 != 0
		merged, err := values.Merge(settings)
		if err != nil {
			t.Fatal(err)
		}
		if got := FromSettings(merged); !reflect.DeepEqual(got, values) {
			t.Fatalf("mask %d did not round trip", mask)
		}
	}
}

func TestStructuralFocusValuesRoundTrip(t *testing.T) {
	settings := config.DefaultSettings()
	values := FromSettings(settings)
	if values.StructuralNavigationTriggersFocusMode {
		t.Fatal("automatic structural focus defaults on")
	}
	values.StructuralNavigationTriggersFocusMode = true
	merged, err := values.Merge(settings)
	if err != nil {
		t.Fatal(err)
	}
	if !FromSettings(merged).StructuralNavigationTriggersFocusMode {
		t.Fatal("preference lost during Apply")
	}
}