using Microsoft.JSInterop;
using OpenTheBox.Adventures;
using OpenTheBox.Core;
using OpenTheBox.Core.Crafting;
using OpenTheBox.Core.Enums;
using OpenTheBox.Core.Items;
using OpenTheBox.Data;
using OpenTheBox.Localization;
using OpenTheBox.Rendering;
using OpenTheBox.Rendering.Panels;
using OpenTheBox.Simulation;
using OpenTheBox.Simulation.Actions;
using OpenTheBox.Simulation.Events;
using Spectre.Console;
using Spectre.Console.Rendering;

namespace OpenTheBox.Web;

/// <summary>
/// Async game host for the Blazor WASM build. Mirrors Program.cs but uses
/// WebTerminal for I/O instead of System.Console, and HttpClient for content loading.
/// </summary>
public sealed class WebGameHost
{
    private readonly IJSRuntime _js;
    private readonly HttpClient _http;
    private WebTerminal _terminal = null!;
    private WebSaveManager _saveManager = null!;

    private GameState _state = null!;
    private ContentRegistry _registry = null!;
    private LocalizationManager _loc = null!;
    private GameSimulation _simulation = null!;
    private RenderContext _renderContext = null!;
    private CraftingEngine _craftingEngine = null!;
    private bool _appRunning = true;
    private bool _gameRunning;
    private DateTime _sessionStart;

    // Pre-loaded content for adventures (theme -> (script, translation?))
    private Dictionary<string, string> _adventureScripts = new();
    private Dictionary<string, string> _adventureTranslations = new();

    // Pre-loaded localization strings
    private Dictionary<string, string> _locStrings = new();

    public WebGameHost(IJSRuntime js, HttpClient http)
    {
        _js = js;
        _http = http;
    }

    public async Task RunAsync()
    {
        UnicodeSupport.Initialize();

        _terminal = new WebTerminal(_js);
        _saveManager = new WebSaveManager(_js);
        _loc = new LocalizationManager(Locale.EN);

        // Pre-load all content
        await LoadAllContentAsync();

        _renderContext = new RenderContext();

        // Initialize terminal
        await _terminal.InitAsync();

        await MainMenuLoop();
    }

    // ── Content loading ──────────────────────────────────────────────────

    private async Task LoadAllContentAsync()
    {
        // Load localization strings
        try
        {
            string enJson = await _http.GetStringAsync("content/strings/en.json");
            _locStrings["en"] = enJson;
            _loc.LoadFromString(Locale.EN, enJson);
        }
        catch (HttpRequestException) { }

        try
        {
            string frJson = await _http.GetStringAsync("content/strings/fr.json");
            _locStrings["fr"] = frJson;
        }
        catch (HttpRequestException) { }

        // Pre-load adventure scripts
        var themes = Enum.GetValues<AdventureTheme>();
        foreach (var theme in themes)
        {
            string themeName = theme.ToString().ToLowerInvariant();
            try
            {
                string script = await _http.GetStringAsync($"content/adventures/{themeName}/intro.lor");
                _adventureScripts[themeName] = script;
            }
            catch (HttpRequestException) { }

            try
            {
                string trans = await _http.GetStringAsync($"content/adventures/{themeName}/intro.fr.lor");
                _adventureTranslations[themeName] = trans;
            }
            catch (HttpRequestException) { }
        }
    }

    private async Task InitializeGameAsync()
    {
        string itemsJson = await _http.GetStringAsync("content/data/items.json");
        string boxesJson = await _http.GetStringAsync("content/data/boxes.json");
        string interactionsJson = await _http.GetStringAsync("content/data/interactions.json");
        string recipesJson = await _http.GetStringAsync("content/data/recipes.json");

        _registry = ContentRegistry.LoadFromStrings(itemsJson, boxesJson, interactionsJson, recipesJson);
        _simulation = new GameSimulation(_registry);
        _craftingEngine = new CraftingEngine();
        _renderContext = RenderContext.FromGameState(_state);
    }

    private void ChangeLocale(Locale locale)
    {
        string key = locale.ToString().ToLowerInvariant();
        if (_locStrings.TryGetValue(key, out string? json))
            _loc.LoadFromString(locale, json);
        else
            _loc.Change(locale); // fallback to file-based (will fail gracefully in WASM)
    }

    // ── Main menu ────────────────────────────────────────────────────────

    private async Task MainMenuLoop()
    {
        var existingSaves = await _saveManager.ListSlotsAsync();

        if (existingSaves.Count > 0)
        {
            var recentState = await _saveManager.LoadAsync(existingSaves[0].Name);
            if (recentState != null)
            {
                ChangeLocale(recentState.CurrentLocale);
            }
        }
        else
        {
            await _terminal.ClearAsync();
            var langOptions = new List<string> { "English", "Français" };
            int langChoice = await _terminal.ShowSelectionAsync("Language / Langue", langOptions, false);
            var selectedLocale = langChoice == 0 ? Locale.EN : Locale.FR;
            ChangeLocale(selectedLocale);
        }

        while (_appRunning)
        {
            await _terminal.ClearAsync();
            await _terminal.WriteLineAsync("========================================");
            await _terminal.WriteLineAsync("         OPEN THE BOX");
            await _terminal.WriteLineAsync("              web");
            await _terminal.WriteLineAsync("========================================");
            await _terminal.WriteLineAsync("");
            await _terminal.WriteLineAsync(_loc.Get("game.subtitle"));
            await _terminal.WriteLineAsync("");

            existingSaves = await _saveManager.ListSlotsAsync();

            var options = new List<string>();
            var actions = new List<string>();

            if (existingSaves.Count > 0)
            {
                var recent = existingSaves[0];
                var savedAt = recent.SavedAt.ToLocalTime();
                options.Add($"{_loc.Get("menu.continue")} ({recent.Name} {savedAt:dd/MM/yyyy HH:mm})");
                actions.Add("continue");
            }

            options.Add(_loc.Get("menu.new_game"));
            actions.Add("new_game");

            if (existingSaves.Count > 1)
            {
                options.Add(_loc.Get("menu.load_game"));
                actions.Add("load_game");
            }

            options.Add(_loc.Get("menu.language"));
            actions.Add("language");

            int choice = await _terminal.ShowSelectionAsync("", options, _renderContext.HasArrowSelection);

            switch (actions[choice])
            {
                case "continue":
                    await ContinueGame(existingSaves[0].Name);
                    break;
                case "new_game":
                    await NewGame();
                    break;
                case "load_game":
                    await LoadGame();
                    break;
                case "language":
                    await ChangeLanguageAsync();
                    break;
            }
        }
    }

    private async Task ContinueGame(string slotName)
    {
        var loaded = await _saveManager.LoadAsync(slotName);
        if (loaded == null)
        {
            await ShowErrorAsync("Failed to load save.");
            await WaitForKeyAsync();
            return;
        }

        _state = loaded;
        ChangeLocale(_state.CurrentLocale);
        await InitializeGameAsync();

        await ShowAdaptiveWelcome();
        await WaitForKeyAsync();

        await GameLoop();
    }

    private async Task NewGame()
    {
        await _terminal.WriteAsync($"{_loc.Get("prompt.name")}: ");
        string name = await _terminal.ReadLineAsync();
        if (string.IsNullOrWhiteSpace(name)) name = "BoxOpener";

        _state = GameState.Create(name, _loc.CurrentLocale);
        await InitializeGameAsync();

        var starterBox = ItemInstance.Create("box_starter");
        _state.AddItem(starterBox);

        await ShowMessageAsync("");
        await ShowMessageAsync(_loc.Get("misc.welcome", name));
        await ShowMessageAsync(_loc.Get("box.starter.desc"));
        await WaitForKeyAsync();

        await GameLoop();
    }

    private async Task LoadGame()
    {
        var slots = await _saveManager.ListSlotsAsync();
        if (slots.Count == 0)
        {
            await ShowMessageAsync(_loc.Get("save.no_saves"));
            await WaitForKeyAsync();
            return;
        }

        var options = slots.Select(s => $"{s.Name} ({s.SavedAt:yyyy-MM-dd HH:mm})").ToList();
        options.Add(_loc.Get("menu.back"));

        int choice = await _terminal.ShowSelectionAsync(_loc.Get("save.choose_slot"), options,
            _renderContext.HasArrowSelection);
        if (choice >= slots.Count) return;

        var loaded = await _saveManager.LoadAsync(slots[choice].Name);
        if (loaded == null)
        {
            await ShowErrorAsync("Failed to load save.");
            await WaitForKeyAsync();
            return;
        }

        _state = loaded;
        ChangeLocale(_state.CurrentLocale);
        await InitializeGameAsync();

        await ShowAdaptiveWelcome();
        await WaitForKeyAsync();

        await GameLoop();
    }

    private async Task ShowAdaptiveWelcome()
    {
        int boxes = _state.TotalBoxesOpened;
        string name = _state.PlayerName;
        string message = boxes switch
        {
            >= 500 => _loc.Get("misc.welcome_back_500", name, boxes.ToString()),
            >= 200 => _loc.Get("misc.welcome_back_200", name, boxes.ToString()),
            >= 50 => _loc.Get("misc.welcome_back_50", name),
            _ => _loc.Get("misc.welcome_back", name)
        };
        await ShowMessageAsync(message);
    }

    private async Task ChangeLanguageAsync()
    {
        var options = new List<string> { "English", "Francais" };
        int choice = await _terminal.ShowSelectionAsync(_loc.Get("menu.language"), options,
            _renderContext.HasArrowSelection);

        var newLocale = choice == 0 ? Locale.EN : Locale.FR;
        ChangeLocale(newLocale);

        if (_state != null)
            _state.CurrentLocale = newLocale;
    }

    // ── Game loop ────────────────────────────────────────────────────────

    private async Task GameLoop()
    {
        _sessionStart = DateTime.UtcNow;
        _gameRunning = true;

        while (_gameRunning)
        {
            _state.TotalPlayTime += DateTime.UtcNow - _sessionStart;
            _sessionStart = DateTime.UtcNow;

            if (_state.HasUIFeature(UIFeature.AutoSave))
                await _saveManager.SaveAsync(_state, _state.PlayerName);

            TickCraftingJobs();

            if (_renderContext.HasFullLayout)
                await _terminal.ClearAsync();

            UpdateCompletionPercent();
            await ShowGameStateAsync();

            var actions = BuildActionList();
            if (actions.Count == 0)
            {
                await ShowMessageAsync(_loc.Get("error.no_boxes"));
                await WaitForKeyAsync();
                break;
            }

            int choice = await _terminal.ShowSelectionAsync(
                _loc.Get("prompt.choose_action"),
                actions.Select(a => a.label).ToList(),
                _renderContext.HasArrowSelection);

            await ExecuteAction(actions[choice].action);
        }
    }

    private List<(string label, string action)> BuildActionList()
    {
        var actions = new List<(string label, string action)>();

        var boxes = _state.Inventory.Where(i => _registry.IsBox(i.DefinitionId)).ToList();
        if (boxes.Count > 0)
            actions.Add((_loc.Get("action.open_box") + $" ({boxes.Count})", "open_box"));

        if (_state.Inventory.Count > 0)
            actions.Add((_loc.Get("action.inventory"), "inventory"));

        if (_state.UnlockedAdventures.Count > 0)
        {
            string adventureLabel = _loc.Get("action.adventure");
            if (_state.CompletedAdventures.Count == 0)
                adventureLabel = $"({_loc.Get("action.new")}) {adventureLabel}";
            actions.Add((adventureLabel, "adventure"));
        }

        if (_state.UnlockedCosmetics.Count > 0)
            actions.Add((_loc.Get("action.appearance"), "appearance"));

        var completedJobs = _state.ActiveCraftingJobs.Where(j => j.IsComplete).ToList();
        if (completedJobs.Count > 0)
            actions.Add((_loc.Get("action.collect_crafting") + $" ({completedJobs.Count})", "collect_crafting"));

        if (!_state.HasUIFeature(UIFeature.AutoSave))
            actions.Add((_loc.Get("action.save"), "save"));

        actions.Add((_loc.Get("action.quit"), "quit"));

        return actions;
    }

    private async Task ExecuteAction(string action)
    {
        switch (action)
        {
            case "open_box": await OpenBoxAction(); break;
            case "inventory": await ShowInventory(); break;
            case "adventure": await StartAdventure(); break;
            case "appearance": await ChangeAppearance(); break;
            case "collect_crafting": await CollectCrafting(); break;
            case "save": await SaveGame(); break;
            case "quit": _gameRunning = false; break;
        }
    }

    // ── Box opening ──────────────────────────────────────────────────────

    private async Task OpenBoxAction()
    {
        var boxes = _state.Inventory.Where(i => _registry.IsBox(i.DefinitionId)).ToList();
        if (boxes.Count == 0)
        {
            await ShowMessageAsync(_loc.Get("box.no_boxes"));
            return;
        }

        var grouped = boxes.GroupBy(b => b.DefinitionId).ToList();
        var boxNames = grouped.Select(g =>
        {
            var name = GetLocalizedName(g.Key);
            return g.Count() > 1 ? $"{name} (x{g.Count()})" : name;
        }).ToList();
        boxNames.Add(_loc.Get("menu.back"));

        int choice = await _terminal.ShowSelectionAsync(_loc.Get("prompt.choose_box"), boxNames,
            _renderContext.HasArrowSelection);
        if (choice >= grouped.Count) return;

        var boxInstance = grouped[choice].First();

        var openAction = new OpenBoxAction(boxInstance.Id)
        {
            BoxDefinitionId = boxInstance.DefinitionId
        };
        var events = _simulation.ProcessAction(openAction, _state);

        await RenderEvents(events);
    }

    // ── Render events ────────────────────────────────────────────────────

    private async Task RenderEvents(List<GameEvent> events)
    {
        var autoConsumedIds = events.OfType<ItemConsumedEvent>().Select(e => e.InstanceId).ToHashSet();
        var allLoot = new List<(string name, string rarity, string category)>();
        var deferredMessages = new List<string>();
        var consumedItemNames = new Dictionary<Guid, string>();
        bool primaryBoxShown = false;

        foreach (var evt in events)
        {
            switch (evt)
            {
                case BoxOpenedEvent boxEvt:
                    var boxDef = _registry.GetBox(boxEvt.BoxId);
                    var boxName = _loc.Get(boxDef?.NameKey ?? boxEvt.BoxId);
                    if (!boxEvt.IsAutoOpen && !primaryBoxShown)
                    {
                        await ShowBoxOpening(boxName, boxDef?.Rarity.ToString() ?? "Common");
                        primaryBoxShown = true;
                    }
                    break;

                case ItemReceivedEvent itemEvt:
                    if (autoConsumedIds.Contains(itemEvt.Item.Id))
                        break;
                    var itemDef = _registry.GetItem(itemEvt.Item.DefinitionId);
                    var itemBoxDef = itemDef is null ? _registry.GetBox(itemEvt.Item.DefinitionId) : null;
                    allLoot.Add((
                        GetLocalizedName(itemEvt.Item.DefinitionId),
                        (itemDef?.Rarity ?? itemBoxDef?.Rarity ?? ItemRarity.Common).ToString(),
                        (itemDef?.Category ?? ItemCategory.Box).ToString()
                    ));
                    break;

                case UIFeatureUnlockedEvent uiEvt:
                    _renderContext.Unlock(uiEvt.Feature);
                    var featureLabel = _loc.Get(GetUIFeatureLocKey(uiEvt.Feature));
                    await ShowUIFeatureUnlocked(featureLabel);
                    await WaitForKeyAsync();
                    break;

                case ItemConsumedEvent consumedEvt:
                    consumedItemNames[consumedEvt.InstanceId] = GetLocalizedName(
                        _state.Inventory.FirstOrDefault(i => i.Id == consumedEvt.InstanceId)?.DefinitionId
                        ?? events.OfType<ItemReceivedEvent>()
                            .FirstOrDefault(r => r.Item.Id == consumedEvt.InstanceId)?.Item.DefinitionId
                        ?? "?");
                    break;

                case InteractionTriggeredEvent interEvt:
                    string interMsg;
                    if (interEvt.TriggerItemId is not null && interEvt.PartnerItemId is not null)
                    {
                        var triggerName = GetLocalizedName(interEvt.TriggerItemId);
                        var partnerName = GetLocalizedName(interEvt.PartnerItemId);
                        interMsg = $"{triggerName} + {partnerName}: {_loc.Get(interEvt.DescriptionKey)}";
                    }
                    else
                    {
                        interMsg = _loc.Get(interEvt.DescriptionKey);
                    }
                    deferredMessages.Add(interMsg);
                    break;

                case AdventureStartedEvent advEvt:
                    await ShowMessageAsync(_loc.Get("adventure.new_unlocked", GetAdventureName(advEvt.Theme)));
                    break;

                case MusicPlayedEvent:
                    await ShowMessageAsync(_loc.Get("box.music.desc"));
                    break;

                case CookieFortuneEvent cookieEvt:
                    await ShowMessageAsync("--- Fortune Cookie ---");
                    await ShowMessageAsync(_loc.Get(cookieEvt.MessageKey));
                    await ShowMessageAsync("----------------------");
                    break;

                case CraftingStartedEvent craftEvt:
                    var recipeName = _registry.Recipes.TryGetValue(craftEvt.RecipeId, out var recDef)
                        ? _loc.Get(recDef.NameKey) : craftEvt.RecipeId;
                    await ShowMessageAsync(_loc.Get("craft.started", recipeName, _loc.Get($"workstation.{craftEvt.Workstation}")));
                    break;

                case CraftingCompletedEvent craftDoneEvt:
                    await ShowMessageAsync(_loc.Get("craft.completed", craftDoneEvt.Workstation.ToString()));
                    break;

                case CraftingCollectedEvent:
                    break;
            }
        }

        if (allLoot.Count > 0)
            await ShowLootReveal(allLoot);

        foreach (var msg in deferredMessages)
        {
            await ShowMessageAsync("");
            await ShowInteraction(msg);
        }

        await WaitForKeyAsync();
    }

    // ── Inventory ────────────────────────────────────────────────────────

    private async Task ShowInventory()
    {
        if (_state.Inventory.Count == 0)
        {
            await ShowMessageAsync(_loc.Get("inventory.empty"));
            await WaitForKeyAsync();
            return;
        }

        if (!_renderContext.HasInventoryPanel)
        {
            await ShowRawInventory();
            return;
        }

        var grouped = InventoryPanel.GetGroupedItems(_state, _registry);
        int totalItems = grouped.Count;
        int maxVisible = InventoryPanel.MaxVisibleRows;
        int scrollOffset = 0;
        int selectedIndex = 0;
        int previousRenderedLines = 0;

        await _terminal.ClearAsync();

        while (true)
        {
            grouped = InventoryPanel.GetGroupedItems(_state, _registry);
            totalItems = grouped.Count;
            if (totalItems == 0) return;
            int maxOffset = Math.Max(0, totalItems - maxVisible);

            selectedIndex = Math.Clamp(selectedIndex, 0, totalItems - 1);
            scrollOffset = Math.Clamp(scrollOffset, 0, maxOffset);

            if (selectedIndex < scrollOffset)
                scrollOffset = selectedIndex;
            else if (selectedIndex >= scrollOffset + maxVisible)
                scrollOffset = selectedIndex - maxVisible + 1;

            // Render to buffer using Spectre off-screen
            var writer = new StringWriter();
            var bufferConsole = AnsiConsole.Create(new AnsiConsoleSettings
            {
                Out = new AnsiConsoleOutput(writer),
                Ansi = AnsiSupport.Yes,
                ColorSystem = ColorSystemSupport.TrueColor
            });
            bufferConsole.Profile.Width = WebTerminal.Width;

            bufferConsole.Write(InventoryPanel.Render(_state, _registry, _loc, scrollOffset, selectedIndex: selectedIndex));

            var selectedGroup = grouped[selectedIndex];
            var detailPanel = InventoryPanel.RenderDetailPanel(selectedGroup, _registry, _loc, _state);
            if (detailPanel is not null)
                bufferConsole.Write(detailPanel);

            if (_renderContext.HasArrowSelection)
            {
                bool isUsable = selectedGroup.Category is ItemCategory.Consumable
                    && selectedGroup.Def?.ResourceType is not null;
                bool isLore = selectedGroup.Category is ItemCategory.LoreFragment;
                string controls = isUsable
                    ? _loc.Get("inventory.controls_use")
                    : isLore
                        ? _loc.Get("inventory.controls_lore")
                        : _loc.Get("inventory.controls");
                bufferConsole.MarkupLine($"[dim]{Markup.Escape(controls)}[/]");
            }

            string rendered = writer.ToString().Replace("\n", "\r\n");
            int renderedLines = rendered.Split('\n').Length;

            // Clear previous render and write new one
            if (previousRenderedLines > 0)
                await _terminal.WriteAsync($"\x1b[{previousRenderedLines}A\x1b[J");
            await _terminal.WriteAsync(rendered);
            previousRenderedLines = renderedLines;

            var key = await _terminal.ReadKeyAsync();
            switch (key.Key)
            {
                case ConsoleKey.UpArrow:
                    selectedIndex = Math.Max(0, selectedIndex - 1);
                    break;
                case ConsoleKey.DownArrow:
                    selectedIndex = Math.Min(totalItems - 1, selectedIndex + 1);
                    break;
                case ConsoleKey.PageUp:
                    selectedIndex = Math.Max(0, selectedIndex - maxVisible);
                    break;
                case ConsoleKey.PageDown:
                    selectedIndex = Math.Min(totalItems - 1, selectedIndex + maxVisible);
                    break;
                case ConsoleKey.Enter:
                    await HandleInventoryAction(selectedGroup);
                    break;
                case ConsoleKey.Escape:
                case ConsoleKey.Q:
                    return;
            }
        }
    }

    private async Task ShowRawInventory()
    {
        await ShowMessageAsync($"--- {_loc.Get("ui.inventory")} ---");
        var groups = _state.Inventory.GroupBy(i => i.DefinitionId).ToList();
        foreach (var g in groups)
        {
            string name = GetLocalizedName(g.Key);
            int qty = g.Sum(i => i.Quantity);
            await ShowMessageAsync(qty > 1 ? $"  {name} (x{qty})" : $"  {name}");
        }
        await ShowMessageAsync("");
        await WaitForKeyAsync();
    }

    private async Task HandleInventoryAction(InventoryGroup item)
    {
        if (item.Def is null) return;

        switch (item.Category)
        {
            case ItemCategory.Consumable when item.Def.ResourceType.HasValue:
                var events = _simulation.ProcessAction(
                    new UseItemAction(item.FirstInstance.Id), _state);
                foreach (var evt in events)
                {
                    switch (evt)
                    {
                        case ResourceChangedEvent resEvt:
                            var resName = _loc.Get($"resource.{resEvt.Type.ToString().ToLower()}");
                            string itemName = _loc.Get(item.Def.NameKey);
                            int remaining = _state.Inventory
                                .Where(i => i.DefinitionId == item.DefId).Sum(i => i.Quantity);
                            string usedMsg = remaining > 0
                                ? _loc.Get("inventory.item_used_qty", itemName, remaining.ToString())
                                : _loc.Get("inventory.item_used", itemName);
                            await ShowMessageAsync(usedMsg);
                            await ShowMessageAsync($"{resName}: {resEvt.OldValue} {UnicodeSupport.Arrow} {resEvt.NewValue}");
                            break;
                        case MessageEvent msgEvt:
                            await ShowMessageAsync(_loc.Get(msgEvt.MessageKey, msgEvt.Args ?? []));
                            break;
                    }
                }
                break;

            case ItemCategory.Cookie:
                var cookieEvents = _simulation.ProcessAction(
                    new UseItemAction(item.FirstInstance.Id), _state);
                foreach (var evt in cookieEvents)
                {
                    switch (evt)
                    {
                        case CookieFortuneEvent cookieEvt:
                            await ShowMessageAsync("--- Fortune Cookie ---");
                            await ShowMessageAsync(_loc.Get(cookieEvt.MessageKey));
                            await ShowMessageAsync("----------------------");
                            break;
                        case ResourceChangedEvent resEvt:
                            var cookieResName = _loc.Get($"resource.{resEvt.Type.ToString().ToLower()}");
                            await ShowMessageAsync($"{cookieResName}: {resEvt.OldValue} {UnicodeSupport.Arrow} {resEvt.NewValue}");
                            break;
                        case MessageEvent msgEvt:
                            await ShowMessageAsync(_loc.Get(msgEvt.MessageKey, msgEvt.Args ?? []));
                            break;
                    }
                }
                break;

            case ItemCategory.LoreFragment:
                await ShowLoreFragment(item);
                break;
        }
    }

    private async Task ShowLoreFragment(InventoryGroup item)
    {
        await _terminal.ClearAsync();
        string name = _loc.Get(item.Def!.NameKey);
        string loreKey = $"lore.fragment_{item.DefId.Replace("lore_", "")}";
        string loreText = _loc.Get(loreKey);

        var panel = new Panel($"[italic]{Markup.Escape(loreText)}[/]")
            .Header($"[bold yellow]{Markup.Escape(name)}[/]")
            .Border(BoxBorder.Double)
            .BorderStyle(new Style(Color.Yellow))
            .Padding(2, 1)
            .Expand();

        await _terminal.WriteRenderableAsync(panel);
        await WaitForKeyAsync();
    }

    // ── Adventures ───────────────────────────────────────────────────────

    private async Task StartAdventure()
    {
        var available = _state.UnlockedAdventures.ToList();
        if (available.Count == 0)
        {
            await ShowMessageAsync(_loc.Get("adventure.none_available"));
            await WaitForKeyAsync();
            return;
        }

        var options = available.Select(a =>
        {
            bool completed = _state.CompletedAdventures.Contains(a.ToString());
            string prefix = completed ? $"[{_loc.Get("adventure.done")}] " : "";
            return prefix + GetAdventureName(a);
        }).ToList();
        options.Add(_loc.Get("menu.back"));

        int choice = await _terminal.ShowSelectionAsync(_loc.Get("action.adventure"), options,
            _renderContext.HasArrowSelection);
        if (choice >= available.Count) return;

        await RunAdventure(available[choice]);
    }

    private async Task RunAdventure(AdventureTheme theme)
    {
        try
        {
            string themeName = theme.ToString().ToLowerInvariant();

            if (!_adventureScripts.TryGetValue(themeName, out string? scriptContent))
            {
                await ShowMessageAsync(_loc.Get("adventure.coming_soon", GetAdventureName(theme)));
                await WaitForKeyAsync();
                return;
            }

            string? translationContent = null;
            if (_loc.CurrentLocale != Locale.EN)
            {
                _adventureTranslations.TryGetValue(themeName, out translationContent);
            }

            // Create a web-compatible renderer adapter for AdventureEngine
            var rendererAdapter = new WebRendererAdapter(this);
            var adventureEngine = new AdventureEngine(rendererAdapter, _loc);
            var events = await adventureEngine.PlayAdventureFromContent(
                theme, _state, scriptContent, translationContent);

            foreach (var evt in events)
            {
                if (evt.Kind == GameEventKind.ItemGranted)
                    _state.AddItem(ItemInstance.Create(evt.TargetId, evt.Amount));
            }

            await ShowMessageAsync(_loc.Get("adventure.completed"));

            if (theme == AdventureTheme.Destiny)
            {
                await WaitForKeyAsync();
                await ShowMessageAsync(_loc.Get("destiny.epilogue"));
                var endOptions = new List<string>
                {
                    _loc.Get("destiny.continue"),
                    _loc.Get("destiny.quit")
                };
                int endChoice = await _terminal.ShowSelectionAsync("", endOptions,
                    _renderContext.HasArrowSelection);
                if (endChoice == 1)
                {
                    await ShowMessageAsync(_loc.Get("destiny.thanks"));
                    await WaitForKeyAsync();
                    _gameRunning = false;
                    return;
                }
            }
        }
        catch (Exception ex)
        {
            await ShowErrorAsync($"Adventure error: {ex.Message}");
        }
        await WaitForKeyAsync();
    }

    // ── Appearance ───────────────────────────────────────────────────────

    private async Task ChangeAppearance()
    {
        var cosmeticItems = _state.Inventory
            .Where(i =>
            {
                var def = _registry.GetItem(i.DefinitionId);
                return def?.Category == ItemCategory.Cosmetic && def.CosmeticSlot.HasValue;
            })
            .GroupBy(i => i.DefinitionId)
            .Select(g => g.First())
            .ToList();

        if (cosmeticItems.Count == 0)
        {
            await ShowMessageAsync(_loc.Get("cosmetic.no_cosmetics"));
            await WaitForKeyAsync();
            return;
        }

        var options = cosmeticItems.Select(i =>
        {
            var def = _registry.GetItem(i.DefinitionId);
            var slotKey = $"cosmetic.slot.{def?.CosmeticSlot?.ToString().ToLower()}";
            var slotName = _loc.Get(slotKey);
            return $"[{slotName}] {GetLocalizedName(i.DefinitionId)}";
        }).ToList();
        options.Add(_loc.Get("menu.back"));

        int choice = await _terminal.ShowSelectionAsync(_loc.Get("action.appearance"), options,
            _renderContext.HasArrowSelection);
        if (choice >= cosmeticItems.Count) return;

        var action = new EquipCosmeticAction(cosmeticItems[choice].Id);
        var events = _simulation.ProcessAction(action, _state);
        foreach (var evt in events)
        {
            if (evt is CosmeticEquippedEvent cosEvt)
            {
                var slotKey = $"cosmetic.slot.{cosEvt.Slot.ToString().ToLower()}";
                var slotName = _loc.Get(slotKey);
                var cosmeticDef = _registry.Items.Values.FirstOrDefault(
                    d => d.CosmeticSlot == cosEvt.Slot &&
                         string.Equals(d.CosmeticValue, cosEvt.NewValue, StringComparison.OrdinalIgnoreCase));
                var valueName = cosmeticDef is not null
                    ? _loc.Get(cosmeticDef.NameKey)
                    : cosEvt.NewValue;
                await ShowMessageAsync(_loc.Get("cosmetic.equipped", slotName, valueName));
            }
            else if (evt is MessageEvent msgEvt)
                await ShowMessageAsync(_loc.Get(msgEvt.MessageKey, msgEvt.Args ?? []));
        }
        await WaitForKeyAsync();
    }

    // ── Crafting ─────────────────────────────────────────────────────────

    private void TickCraftingJobs()
    {
        _craftingEngine?.TickJobs(_state);
    }

    private async Task CollectCrafting()
    {
        var events = _craftingEngine.CollectCompleted(_state, _registry);

        var newItems = events.OfType<ItemReceivedEvent>().Select(e => e.Item).ToList();
        var metaEngine = new MetaEngine();
        events.AddRange(metaEngine.ProcessNewItems(newItems, _state, _registry));

        events.AddRange(_craftingEngine.AutoCraftCheck(_state, _registry));

        await RenderEvents(events);
    }

    private async Task SaveGame()
    {
        await ShowMessageAsync(_loc.Get("save.saving"));
        await _saveManager.SaveAsync(_state, _state.PlayerName);
        await ShowMessageAsync(_loc.Get("save.saved", _state.PlayerName));
        await WaitForKeyAsync();
    }

    // ── Rendering helpers ────────────────────────────────────────────────

    private async Task ShowGameStateAsync()
    {
        if (_renderContext.HasFullLayout)
        {
            await RenderFullLayout();
        }
        else
        {
            await RenderSequentialPanels();
        }
    }

    private async Task RenderFullLayout()
    {
        var topRow = new Table().NoBorder().HideHeaders().Expand();
        topRow.AddColumn(new TableColumn("c1").Width(20).NoWrap());
        topRow.AddColumn(new TableColumn("c2").Width(30).NoWrap());
        topRow.AddColumn(new TableColumn("c3").NoWrap());

        topRow.AddRow(
            _renderContext.HasPortraitPanel
                ? PortraitPanel.Render(_state.Appearance, useColors: _renderContext.HasColors)
                : new Panel("[dim]?[/]").Header("Portrait").Expand(),
            _renderContext.HasStatsPanel
                ? StatsPanel.Render(_state, _loc)
                : new Panel($"[dim italic]{Markup.Escape(_loc.Get("panel.locked.stats"))}[/]").Header("Stats").Expand(),
            _renderContext.HasResourcePanel
                ? ResourcePanel.Render(_state, _loc)
                : new Panel($"[dim italic]{Markup.Escape(_loc.Get("panel.locked.resources"))}[/]")
                    .Header(Markup.Escape(_loc.Get("resource.title"))).Expand());

        await _terminal.WriteRenderableAsync(topRow);

        var botRow = new Table().NoBorder().HideHeaders().Expand();
        botRow.AddColumn(new TableColumn("c1").Width(60).NoWrap());
        botRow.AddColumn(new TableColumn("c2").NoWrap());

        IRenderable leftPanel = _renderContext.HasInventoryPanel
            ? InventoryPanel.Render(_state, _registry, _loc, compact: true)
            : new Panel($"[dim italic]{Markup.Escape(_loc.Get("panel.locked.inventory"))}[/]")
                .Header("Inventory").Expand();

        var rightItems = new List<IRenderable>();
        if (_renderContext.HasCraftingPanel)
            rightItems.Add(CraftingPanel.Render(_state, _registry, _loc));
        if (_renderContext.HasCompletionTracker)
        {
            rightItems.Add(new Markup($"[bold cyan]{Markup.Escape(_loc.Get("ui.completion", _renderContext.CompletionPercent))}[/]"));
            foreach (var hint in _renderContext.NextHints)
                rightItems.Add(new Markup($"  [dim]{Markup.Escape(hint)}[/]"));
        }

        IRenderable rightPanel = rightItems.Count > 0
            ? new Rows(rightItems)
            : new Panel("[dim]???[/]").Header("???").Expand();

        botRow.AddRow(leftPanel, rightPanel);
        await _terminal.WriteRenderableAsync(botRow);
    }

    private async Task RenderSequentialPanels()
    {
        var topPanels = new List<IRenderable>();
        if (_renderContext.HasPortraitPanel) topPanels.Add(PortraitPanel.Render(_state.Appearance, useColors: _renderContext.HasColors));
        if (_renderContext.HasStatsPanel) topPanels.Add(StatsPanel.Render(_state, _loc));
        if (_renderContext.HasResourcePanel) topPanels.Add(ResourcePanel.Render(_state, _loc));

        if (!_renderContext.HasStatsPanel)
        {
            string boxesLabel = _loc.Get("stats.boxes_opened");
            if (_renderContext.HasColors)
                await _terminal.WriteMarkupLineAsync($"[dim]{Markup.Escape(boxesLabel)}: {_state.TotalBoxesOpened}[/]");
            else
                await _terminal.WriteLineAsync($"{boxesLabel}: {_state.TotalBoxesOpened}");
        }

        if (topPanels.Count > 1)
        {
            var row = new Table().NoBorder().HideHeaders().Expand();
            foreach (var _ in topPanels) row.AddColumn(new TableColumn("").NoWrap());
            row.AddRow(topPanels.ToArray());
            await _terminal.WriteRenderableAsync(row);
        }
        else if (topPanels.Count == 1)
        {
            await _terminal.WriteRenderableAsync(topPanels[0]);
        }

        if (_renderContext.HasInventoryPanel)
            await _terminal.WriteRenderableAsync(InventoryPanel.Render(_state, _registry, _loc, compact: true));

        if (_renderContext.HasCraftingPanel)
            await _terminal.WriteRenderableAsync(CraftingPanel.Render(_state, _registry, _loc));

        if (_renderContext.HasCompletionTracker)
        {
            await _terminal.WriteRenderableAsync(
                new Rule($"[bold cyan]{Markup.Escape(_loc.Get("ui.completion", _renderContext.CompletionPercent))}[/]")
                    .RuleStyle("cyan"));
            foreach (var hint in _renderContext.NextHints)
                await _terminal.WriteMarkupLineAsync($"  [dim]{Markup.Escape(hint)}[/]");
        }
    }

    // ── Display methods (styled output) ──────────────────────────────────

    internal async Task ShowMessageAsync(string message)
    {
        if (_renderContext.HasColors)
            await _terminal.WriteMarkupLineAsync($"[green]{Markup.Escape(message)}[/]");
        else
            await _terminal.WriteLineAsync(message);
    }

    private async Task ShowErrorAsync(string message)
    {
        if (_renderContext.HasColors)
            await _terminal.WriteMarkupLineAsync($"[bold red]ERROR:[/] [red]{Markup.Escape(message)}[/]");
        else
            await _terminal.WriteLineAsync($"ERROR: {message}");
    }

    private async Task ShowBoxOpening(string boxName, string rarity)
    {
        if (_renderContext.HasBoxAnimation)
        {
            string color = RarityColor(rarity);
            await _terminal.WriteMarkupLineAsync(
                $"[bold {color}]{Markup.Escape(_loc.Get("box.opening", boxName))}[/]");
            await Task.Delay(1500);
            await _terminal.WriteMarkupLineAsync(
                $"[bold {color}]{Markup.Escape(_loc.Get("box.shimmer"))}[/]");
            await Task.Delay(1000);
            await _terminal.WriteMarkupLineAsync(
                $"[bold {color}]{Markup.Escape(_loc.Get("box.opened_short", boxName))}[/]");
        }
        else if (_renderContext.HasColors)
        {
            string color = RarityColor(rarity);
            await _terminal.WriteMarkupLineAsync(
                $"[bold {color}]{Markup.Escape(_loc.Get("box.opening", boxName))}[/]");
            await Task.Delay(800);
            await _terminal.WriteMarkupLineAsync(
                $"[bold {color}]{Markup.Escape(_loc.Get("box.opened_short", boxName))}[/]");
        }
        else
        {
            await _terminal.WriteLineAsync(_loc.Get("box.opening", boxName));
            await Task.Delay(500);
            await _terminal.WriteLineAsync(_loc.Get("box.opened_short", boxName));
        }
    }

    private async Task ShowLootReveal(List<(string name, string rarity, string category)> items)
    {
        if (_renderContext.HasInventoryPanel)
        {
            var table = new Table()
                .Border(TableBorder.Rounded)
                .Title($"[bold yellow]{Markup.Escape(_loc.Get("loot.title"))}[/]")
                .AddColumn(new TableColumn($"[bold]{Markup.Escape(_loc.Get("loot.name"))}[/]").Centered())
                .AddColumn(new TableColumn($"[bold]{Markup.Escape(_loc.Get("loot.rarity"))}[/]").Centered());

            foreach (var (name, rarity, category) in items)
            {
                string color = RarityColor(rarity);
                string localizedRarity = _loc.Get($"rarity.{rarity.ToLower()}");
                string stars = RarityStars(rarity);
                string displayName = stars.Length > 0 ? $"{stars}{name}" : name;
                table.AddRow(
                    $"[{color}]{Markup.Escape(displayName)}[/]",
                    $"[{color}]{Markup.Escape(localizedRarity)}[/]");
            }

            await _terminal.WriteRenderableAsync(table);
        }
        else if (_renderContext.HasColors)
        {
            await _terminal.WriteMarkupLineAsync($"[bold yellow]{Markup.Escape(_loc.Get("loot.received"))}[/]");
            foreach (var (name, rarity, category) in items)
            {
                string color = RarityColor(rarity);
                string localizedRarity = _loc.Get($"rarity.{rarity.ToLower()}");
                await _terminal.WriteMarkupLineAsync(
                    $"  - [{color}]{Markup.Escape(name)}[/] [{color}][[{Markup.Escape(localizedRarity)}]][/]");
            }
        }
        else
        {
            await _terminal.WriteLineAsync(_loc.Get("loot.received"));
            foreach (var (name, rarity, category) in items)
            {
                string localizedRarity = _loc.Get($"rarity.{rarity.ToLower()}");
                await _terminal.WriteLineAsync($"  - {name} [{localizedRarity}]");
            }
        }
    }

    private async Task ShowUIFeatureUnlocked(string featureName)
    {
        if (_renderContext.HasColors)
        {
            var star = UnicodeSupport.Star;
            var panel = new Panel($"[bold yellow]{star} {Markup.Escape(featureName)} {star}[/]")
                .Border(BoxBorder.Double)
                .BorderStyle(new Style(Color.Yellow))
                .Padding(2, 0)
                .Expand();
            await _terminal.WriteRenderableAsync(panel);
        }
        else
        {
            await _terminal.WriteLineAsync("========================================");
            await _terminal.WriteLineAsync($"  {UnicodeSupport.Star} {featureName} {UnicodeSupport.Star}");
            await _terminal.WriteLineAsync("========================================");
        }
    }

    private async Task ShowInteraction(string description)
    {
        if (_renderContext.HasColors)
            await _terminal.WriteMarkupLineAsync($"[italic silver]* {Markup.Escape(description)} *[/]");
        else
            await _terminal.WriteLineAsync($"* {description} *");
    }

    internal async Task ShowAdventureDialogueAsync(string? character, string text)
    {
        if (_renderContext.HasColors)
        {
            if (character is not null)
                await _terminal.WriteMarkupLineAsync($"[bold aqua]{Markup.Escape(character)}[/]");
            await _terminal.WriteMarkupLineAsync($"  [italic]{Markup.Escape(text)}[/]");
            await _terminal.WriteLineAsync();
        }
        else
        {
            if (character is not null)
                await _terminal.WriteLineAsync($"[{character}]");
            await _terminal.WriteLineAsync(text);
            await _terminal.WriteLineAsync();
        }
    }

    internal async Task ShowAdventureHintAsync(string hint)
    {
        if (_renderContext.HasColors)
            await _terminal.WriteMarkupLineAsync($"  [dim italic]{Markup.Escape(hint)}[/]");
        else
            await _terminal.WriteLineAsync($"  ({hint})");
    }

    internal async Task<int> ShowAdventureChoiceAsync(List<string> options)
    {
        if (_renderContext.HasArrowSelection)
        {
            return await _terminal.ShowSelectionAsync(_loc.Get("prompt.what_do"), options, true);
        }
        return await _terminal.ShowSelectionAsync(_loc.Get("prompt.what_do"), options, false);
    }

    internal async Task WaitForKeyAsync(string? message = null)
    {
        string text = message ?? _loc.Get("prompt.press_key");
        if (_renderContext.HasColors)
            await _terminal.WriteMarkupLineAsync($"[dim]{Markup.Escape(text)}[/]");
        else
            await _terminal.WriteLineAsync(text);

        await _terminal.WaitForKeyAsync();
        await _terminal.WriteLineAsync();
    }

    // ── Helpers ──────────────────────────────────────────────────────────

    private void UpdateCompletionPercent()
    {
        if (!_renderContext.HasCompletionTracker) return;

        var totalCosmetics = _registry.Items.Values.Count(i => i.CosmeticSlot.HasValue);
        var totalAdventures = Enum.GetValues<AdventureTheme>().Length;
        var totalUIFeatures = Enum.GetValues<UIFeature>().Length;
        var totalResources = Enum.GetValues<ResourceType>().Length;
        var totalStats = Enum.GetValues<StatType>().Length;
        var total = totalCosmetics + totalAdventures + totalUIFeatures
                  + totalResources + totalStats;

        var unlocked = _state.UnlockedCosmetics.Count
                     + _state.UnlockedAdventures.Count
                     + _state.UnlockedUIFeatures.Count
                     + _state.VisibleResources.Count
                     + _state.VisibleStats.Count;

        _renderContext.CompletionPercent = total > 0 ? (int)(unlocked * 100.0 / total) : 0;

        var hints = new List<string>();
        var totalLore = _registry.Items.Values.Count(i => i.Category == ItemCategory.LoreFragment);
        var ownedLore = _state.Inventory.Count(i =>
            _registry.GetItem(i.DefinitionId)?.Category == ItemCategory.LoreFragment);
        if (ownedLore < totalLore)
            hints.Add(_loc.Get("hint.lore", ownedLore, totalLore));

        var completedAdv = _state.CompletedAdventures.Count;
        var incompleteUnlocked = _state.UnlockedAdventures
            .Count(a => !_state.CompletedAdventures.Contains(a.ToString()));
        if (incompleteUnlocked > 0)
            hints.Add(_loc.Get("hint.adventures", completedAdv, _state.UnlockedAdventures.Count));

        if (!_state.UnlockedAdventures.Contains(AdventureTheme.Destiny))
            hints.Add(_loc.Get("hint.destiny"));

        _renderContext.NextHints = hints;
    }

    private static string GetUIFeatureLocKey(UIFeature feature) => feature switch
    {
        UIFeature.TextColors => "meta.colors",
        UIFeature.ExtendedColors => "meta.extended_colors",
        UIFeature.ArrowKeySelection => "meta.arrows",
        UIFeature.InventoryPanel => "meta.inventory",
        UIFeature.ResourcePanel => "meta.resources",
        UIFeature.StatsPanel => "meta.stats",
        UIFeature.PortraitPanel => "meta.portrait",
        UIFeature.FullLayout => "meta.layout",
        UIFeature.KeyboardShortcuts => "meta.shortcuts",
        UIFeature.BoxAnimation => "meta.animation",
        UIFeature.CraftingPanel => "meta.crafting",
        UIFeature.CompletionTracker => "meta.completion",
        UIFeature.AutoSave => "meta.autosave",
        _ => $"meta.{feature.ToString().ToLower()}"
    };

    private string GetAdventureName(AdventureTheme theme)
    {
        string key = $"adventure.name.{theme}";
        var name = _loc.Get(key);
        return name.StartsWith("[MISSING:") ? theme.ToString() : name;
    }

    private string GetLocalizedName(string definitionId)
    {
        var itemDef = _registry.GetItem(definitionId);
        if (itemDef is not null)
            return _loc.Get(itemDef.NameKey);

        var boxDef = _registry.GetBox(definitionId);
        if (boxDef is not null)
            return _loc.Get(boxDef.NameKey);

        return _loc.Get(definitionId);
    }

    private static string RarityColor(string rarity) => rarity.ToLowerInvariant() switch
    {
        "common" => "white",
        "uncommon" => "green",
        "rare" => "blue",
        "epic" => "purple",
        "legendary" => "gold1",
        "mythic" => "red",
        _ => "white"
    };

    private static string RarityStars(string rarity)
    {
        var s = UnicodeSupport.Star;
        return rarity.ToLowerInvariant() switch
        {
            "rare" => $"{s} ",
            "epic" => $"{s}{s} ",
            "legendary" => $"{s}{s}{s} ",
            "mythic" => $"{s}{s}{s}{s} ",
            _ => ""
        };
    }
}

/// <summary>
/// Adapter that implements IRenderer by delegating to WebGameHost's async methods.
/// Used by AdventureEngine which requires a synchronous IRenderer.
/// The adventure callbacks (HandleDialogue/HandleChoice) are called synchronously
/// by Loreline, so this adapter blocks on the async methods.
/// In WASM single-threaded mode, this works because Loreline callbacks
/// resume execution synchronously via TaskCompletionSource.
/// </summary>
internal sealed class WebRendererAdapter : IRenderer
{
    private readonly WebGameHost _host;

    public WebRendererAdapter(WebGameHost host)
    {
        _host = host;
    }

    public void ShowMessage(string message)
    {
        _host.ShowMessageAsync(message).GetAwaiter().GetResult();
    }

    public void ShowError(string message)
    {
        _host.ShowMessageAsync($"ERROR: {message}").GetAwaiter().GetResult();
    }

    public void ShowBoxOpening(string boxName, string rarity) { }
    public void ShowLootReveal(List<(string name, string rarity, string category)> items) { }
    public void ShowGameState(GameState state, RenderContext context) { }
    public void ShowUIFeatureUnlocked(string featureName) { }

    public void ShowAdventureDialogue(string? character, string text)
    {
        _host.ShowAdventureDialogueAsync(character, text).GetAwaiter().GetResult();
    }

    public int ShowAdventureChoice(List<string> options)
    {
        return _host.ShowAdventureChoiceAsync(options).GetAwaiter().GetResult();
    }

    public void ShowAdventureHint(string hint)
    {
        _host.ShowAdventureHintAsync(hint).GetAwaiter().GetResult();
    }

    public void ShowInteraction(string description) { }

    public void WaitForKeyPress(string? message = null)
    {
        _host.WaitForKeyAsync(message).GetAwaiter().GetResult();
    }

    public void Clear() { }

    public int ShowSelection(string prompt, List<string> options)
    {
        // Not used by AdventureEngine
        return 0;
    }

    public string ShowTextInput(string prompt)
    {
        // Not used by AdventureEngine
        return "";
    }
}