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

package config

import (
	"os"
	"path/filepath"
	"reflect"
	"strings"
	"testing"
)

func TestSpeechNumbersPersistWithOneDecimal(t *testing.T) {
	settings := DefaultSettings()
	rate, pitch, gain := 61.29999999999999, 4.499999999999998, 4.999999999999999
	settings.DefaultVoice = Voice{Rate: &rate, AveragePitch: &pitch, Gain: &gain}
	settings.UppercaseVoice.AveragePitch = &pitch
	settings.HyperlinkVoice.Rate = &rate
	settings.SystemVoice.Gain = &gain
	settings.EchoVoice = settings.DefaultVoice
	path := filepath.Join(t.TempDir(), "settings.toml")
	store, err := NewStore(path)
	if err != nil {
		t.Fatal(err)
	}
	if err := store.Save(settings); err != nil {
		t.Fatal(err)
	}
	loaded, err := store.Load()
	if err != nil {
		t.Fatal(err)
	}
	for index, voice := range []Voice{loaded.DefaultVoice, loaded.UppercaseVoice, loaded.HyperlinkVoice, loaded.SystemVoice, loaded.EchoVoice} {
		for field, value := range []*float64{voice.Rate, voice.AveragePitch, voice.Gain} {
			if value != nil && *value != []float64{61.3, 4.5, 5}[field] {
				t.Fatalf("voice %d field %d = %g", index, field, *value)
			}
		}
	}
	if loaded.UppercaseVoice.Rate != nil || loaded.HyperlinkVoice.Gain != nil || loaded.SystemVoice.AveragePitch != nil {
		t.Fatal("rounding turned inheritance into explicit settings")
	}
	if *settings.DefaultVoice.AveragePitch != 4.499999999999998 {
		t.Fatal("saving mutated caller's voice")
	}
	contents, err := os.ReadFile(path)
	if err != nil || strings.Contains(string(contents), "999999") || !strings.Contains(string(contents), "average-pitch = 4.5") {
		t.Fatalf("TOML does not contain rounded decimal values: %v", err)
	}
	if err := store.SaveForApplication("Example Editor", settings); err != nil {
		t.Fatal(err)
	}
	contents, err = os.ReadFile(path)
	if err != nil {
		t.Fatal(err)
	}
	document, _, err := decodeDocument(contents)
	if err != nil {
		t.Fatal(err)
	}
	profile := document.Profiles[document.Applications["Example Editor"]]
	if profile.Speech.DefaultVoice != nil || profile.KeyEcho.EchoVoice != nil {
		t.Fatal("floating-point noise created application voice overrides")
	}
	appGain := 3.299999999999999
	settings.DefaultVoice.Gain = &appGain
	if err := store.SaveForApplication("Example Editor", settings); err != nil {
		t.Fatal(err)
	}
	application, found, err := store.LoadForApplication("Example Editor")
	if err != nil || !found || *application.DefaultVoice.Gain != 3.3 {
		t.Fatalf("application speech was not rounded: %+v, %v", application.DefaultVoice, err)
	}
}

func TestVoiceTypesPersistAndInheritAcrossApplications(t *testing.T) {
	settings := DefaultSettings()
	rate, pitch, gain := 62.0, 8.0, 4.0
	settings.DefaultVoice = Voice{Rate: &rate, AveragePitch: &pitch, Gain: &gain, Family: &VoiceFamily{Name: "Default person", Lang: "en"}}
	upper, link, system := 8.5, 3.0, 2.0
	settings.UppercaseVoice.AveragePitch = &upper
	settings.HyperlinkVoice.Rate = &link
	settings.SystemVoice.Gain = &system
	settings.Reading.IndentationPresentationMode = "both"
	store, err := NewStore(filepath.Join(t.TempDir(), "settings.toml"))
	if err != nil {
		t.Fatal(err)
	}
	if err := store.Save(settings); err != nil {
		t.Fatal(err)
	}
	loaded, err := store.Load()
	if err != nil {
		t.Fatal(err)
	}
	for _, kind := range []string{"uppercase", "hyperlink", "system"} {
		if !reflect.DeepEqual(EffectiveVoice(loaded, kind), EffectiveVoice(settings, kind)) {
			t.Fatalf("%s did not persist", kind)
		}
	}
	if loaded.Reading.IndentationPresentationMode != "both" {
		t.Fatal("indentation mode lost")
	}
	appSettings := loaded
	appPitch := 5.0
	appSettings.UppercaseVoice.AveragePitch = &appPitch
	if err := store.SaveForApplication("example-app", appSettings); err != nil {
		t.Fatal(err)
	}
	application, found, err := store.LoadForApplication("example-app")
	if err != nil || !found || *EffectiveVoice(application, "uppercase").AveragePitch != 5 {
		t.Fatalf("application voice = %+v, %v", application.UppercaseVoice, err)
	}
	global, err := store.Load()
	if err != nil || *EffectiveVoice(global, "uppercase").AveragePitch != 8.5 {
		t.Fatal("application voice changed global voice")
	}
	*store.Current().UppercaseVoice.AveragePitch = 0
	if *store.Current().UppercaseVoice.AveragePitch != 8.5 {
		t.Fatal("voice snapshots alias")
	}
	appSettings.UppercaseVoice = Voice{}
	if err := store.SaveForApplication("example-app", appSettings); err != nil {
		t.Fatal(err)
	}
	application, found, err = store.LoadForApplication("example-app")
	if err != nil || !found || application.UppercaseVoice.AveragePitch != nil || *EffectiveVoice(application, "uppercase").AveragePitch != 9 {
		t.Fatalf("application automatic pitch reset = %+v, %v", application.UppercaseVoice, err)
	}
}

func TestAutomaticUppercasePitchAndExplicitOverride(t *testing.T) {
	settings := DefaultSettings()
	for _, tc := range []struct{ normal, upper float64 }{{3, 7}, {5, 7}, {7, 9}, {8, 9}, {9, 9}} {
		settings.DefaultVoice.AveragePitch = &tc.normal
		if got := *EffectiveVoice(settings, "uppercase").AveragePitch; got != tc.upper {
			t.Fatalf("normal %g: uppercase %g, want %g", tc.normal, got, tc.upper)
		}
	}
	chosen := 6.0
	settings.UppercaseVoice.AveragePitch = &chosen
	if *EffectiveVoice(settings, "uppercase").AveragePitch != chosen {
		t.Fatal("explicit uppercase pitch ignored")
	}
	settings.Reading.IndentationPresentationMode = "invalid"
	if Validate(settings) == nil {
		t.Fatal("invalid indentation mode accepted")
	}
}