package app

import (
	"context"
	"log/slog"
	"path/filepath"
	"reflect"
	"strings"
	"testing"

	"git.stormux.org/storm/cthulhu/internal/config"
	"git.stormux.org/storm/cthulhu/internal/preferences"
	"git.stormux.org/storm/cthulhu/internal/speech"
	"git.stormux.org/storm/cthulhu/internal/wine"
)

// The Wine tab is global-only: a global preferences Apply carries the edited
// Wine values through the preferences protocol into the live global Wine
// source the manager reads, persists them through TOML, and needs no reader
// restart. An application-scoped Apply never changes the governing values.
func TestWinePreferencesGlobalApplyGovernsAndPersists(t *testing.T) {
	path := filepath.Join(t.TempDir(), "settings.toml")
	global := config.DefaultSettings()
	global.Path = path
	global.Wine = config.WineSettings{ExcludedPrograms: []string{"Game.exe"}}
	store, err := config.NewStore(path)
	if err != nil {
		t.Fatal(err)
	}
	if err := store.Save(global); err != nil {
		t.Fatal(err)
	}
	worker := newPreferencesWorker(slog.New(slog.DiscardHandler), global,
		settingsUpdateFunc(func(context.Context, speech.Settings) error { return nil }))
	worker.live = &liveSettings{}
	worker.live.Store(global)
	worker.live.StoreGlobalWine(global.Wine)
	manager := newWineManager(slog.New(slog.DiscardHandler), worker.live)
	governing := func() wine.Settings { return manager.SettingsSource() }
	ctx := context.Background()

	// An invalid entry is named and blocks the global Apply.
	if !worker.beginEdit(ctx, "") {
		t.Fatal("global preferences did not open")
	}
	invalid := preferences.FromSettings(worker.editing)
	invalid.Wine.ExcludedPrograms = []string{"Game.exe", `C:\Games\Sneaky.exe`}
	response := worker.apply(ctx, preferences.Request{Values: invalid, Save: true})
	if response.Accepted || !strings.Contains(response.Message, `C:\Games\Sneaky.exe`) {
		t.Fatalf("invalid Wine entry was not named and blocked: %+v", response)
	}
	if want := (wine.Settings{ExcludedPrograms: []string{"Game.exe"}}); !reflect.DeepEqual(governing(), want) {
		t.Fatalf("rejected Apply changed governing Wine settings: %+v", governing())
	}

	// A valid global Apply reaches the same manager with no restart and
	// persists through TOML.
	values := preferences.FromSettings(worker.editing)
	values.Wine = config.WineSettings{ControllerOnly: true,
		ExcludedPrograms: []string{"Game.exe", "New Game.exe", "new game.EXE"}}
	response = worker.apply(ctx, preferences.Request{Values: values, Save: true})
	if !response.Accepted {
		t.Fatalf("global Wine Apply rejected: %+v", response)
	}
	want := wine.Settings{ControllerOnly: true, ExcludedPrograms: []string{"Game.exe", "New Game.exe"}}
	if !reflect.DeepEqual(governing(), want) {
		t.Fatalf("governing Wine settings after Apply = %+v, want %+v", governing(), want)
	}
	loaded, err := store.Load()
	if err != nil {
		t.Fatal(err)
	}
	if !reflect.DeepEqual(loaded.Wine, config.WineSettings(want)) {
		t.Fatalf("persisted Wine settings = %+v, want %+v", loaded.Wine, want)
	}
	worker.editingActive = false

	// An application-scoped Apply has no Wine editing surface. Even a
	// request carrying different Wine values cannot change the governing
	// list, the global profile, or the application profile's Wine values.
	worker.switchApplication(ctx, "Example Editor")
	if !worker.beginEdit(ctx, "\x00") || worker.editApp != "Example Editor" {
		t.Fatal("application preferences did not open")
	}
	appValues := preferences.FromSettings(worker.editing)
	appValues.TimeFormat = "24-hour"
	appValues.Wine = config.WineSettings{ExcludedPrograms: []string{"Sneaky.exe"}}
	response = worker.apply(ctx, preferences.Request{Values: appValues, Save: true})
	if !response.Accepted || worker.settings.TimeFormat != "24-hour" {
		t.Fatalf("application Apply rejected: %+v", response)
	}
	if !reflect.DeepEqual(governing(), want) {
		t.Fatalf("application Apply changed governing Wine settings: %+v", governing())
	}
	if !reflect.DeepEqual(worker.globalSettings.Wine, config.WineSettings(want)) {
		t.Fatalf("application Apply changed global Wine settings: %+v", worker.globalSettings.Wine)
	}
	if !reflect.DeepEqual(worker.appSettings["Example Editor"].Wine, config.WineSettings(want)) {
		t.Fatalf("application Apply rewrote Wine values: %+v", worker.appSettings["Example Editor"].Wine)
	}
	reloaded, err := store.Load()
	if err != nil {
		t.Fatal(err)
	}
	if !reflect.DeepEqual(reloaded.Wine, config.WineSettings(want)) {
		t.Fatalf("application Apply persisted into the global Wine profile: %+v", reloaded.Wine)
	}
}