using OpenTheBox.Core;
using OpenTheBox.Core.Characters;
using OpenTheBox.Core.Enums;
using OpenTheBox.Core.Items;
using OpenTheBox.Localization;
using OpenTheBox.Rendering;
using OpenTheBox.Rendering.Panels;
using Spectre.Console;
using Spectre.Console.Rendering;

namespace OpenTheBox.Tests;

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

/// <summary>
/// Renders an IRenderable to string using a local AnsiConsole. No shared state.
/// </summary>
static class RenderHelper
{
    public static string RenderToString(IRenderable renderable)
    {
        var writer = new StringWriter();
        var console = AnsiConsole.Create(new AnsiConsoleSettings
        {
            Out = new AnsiConsoleOutput(writer),
            Ansi = AnsiSupport.Yes,
            ColorSystem = ColorSystemSupport.TrueColor
        });
        console.Write(renderable);
        return writer.ToString();
    }
}

/// <summary>
/// Captures AnsiConsole.Console and Console.Out output for renderer tests.
/// MUST NOT be used in parallel — use [Collection("ConsoleTests")].
/// </summary>
sealed class ConsoleCapture : IDisposable
{
    private readonly IAnsiConsole _origAnsi;
    private readonly TextWriter _origOut;
    private readonly StringWriter _ansiWriter = new();
    private readonly StringWriter _consoleWriter = new();

    public ConsoleCapture()
    {
        _origAnsi = AnsiConsole.Console;
        _origOut = Console.Out;

        AnsiConsole.Console = AnsiConsole.Create(new AnsiConsoleSettings
        {
            Out = new AnsiConsoleOutput(_ansiWriter),
            Interactive = InteractionSupport.No,
            Ansi = AnsiSupport.Yes,
            ColorSystem = ColorSystemSupport.TrueColor
        });
        Console.SetOut(_consoleWriter);
    }

    public string Output => _ansiWriter.ToString() + _consoleWriter.ToString();

    public void Dispose()
    {
        AnsiConsole.Console = _origAnsi;
        Console.SetOut(_origOut);
    }
}

// ── Panel Tests ──────────────────────────────────────────────────────────

public class PortraitPanelTests
{
    [Fact]
    public void Render_DefaultAppearance_DoesNotThrow()
    {
        var result = RenderHelper.RenderToString(PortraitPanel.Render(new PlayerAppearance()));
        Assert.NotEmpty(result);
    }

    [Fact]
    public void Render_FullyEquipped_DoesNotThrow()
    {
        var appearance = new PlayerAppearance
        {
            HairStyle = HairStyle.Cyberpunk,
            HairTint = TintColor.Neon,
            EyeStyle = EyeStyle.CyberneticEyes,
            BodyStyle = BodyStyle.Armored,
            BodyTint = TintColor.Gold,
            LegStyle = LegStyle.RocketBoots,
            ArmStyle = ArmStyle.Wings
        };
        var result = RenderHelper.RenderToString(PortraitPanel.Render(appearance));
        Assert.NotEmpty(result);
    }

    [Theory]
    [MemberData(nameof(AllHairStyles))]
    public void Render_EachHairStyle_DoesNotThrow(HairStyle style)
    {
        var result = RenderHelper.RenderToString(
            PortraitPanel.Render(new PlayerAppearance { HairStyle = style }));
        Assert.NotEmpty(result);
    }

    [Theory]
    [MemberData(nameof(AllEyeStyles))]
    public void Render_EachEyeStyle_DoesNotThrow(EyeStyle style)
    {
        var result = RenderHelper.RenderToString(
            PortraitPanel.Render(new PlayerAppearance { EyeStyle = style }));
        Assert.NotEmpty(result);
    }

    [Theory]
    [MemberData(nameof(AllBodyStyles))]
    public void Render_EachBodyStyle_DoesNotThrow(BodyStyle style)
    {
        var result = RenderHelper.RenderToString(
            PortraitPanel.Render(new PlayerAppearance { BodyStyle = style }));
        Assert.NotEmpty(result);
    }

    [Theory]
    [MemberData(nameof(AllLegStyles))]
    public void Render_EachLegStyle_DoesNotThrow(LegStyle style)
    {
        var result = RenderHelper.RenderToString(
            PortraitPanel.Render(new PlayerAppearance { LegStyle = style }));
        Assert.NotEmpty(result);
    }

    [Theory]
    [MemberData(nameof(AllArmStyles))]
    public void Render_EachArmStyle_DoesNotThrow(ArmStyle style)
    {
        var result = RenderHelper.RenderToString(
            PortraitPanel.Render(new PlayerAppearance { ArmStyle = style }));
        Assert.NotEmpty(result);
    }

    [Theory]
    [MemberData(nameof(AllTintColors))]
    public void Render_EachHairTint_DoesNotThrow(TintColor tint)
    {
        var result = RenderHelper.RenderToString(
            PortraitPanel.Render(new PlayerAppearance { HairTint = tint }));
        Assert.NotEmpty(result);
    }

    [Theory]
    [MemberData(nameof(AllTintColors))]
    public void Render_EachBodyTint_DoesNotThrow(TintColor tint)
    {
        var result = RenderHelper.RenderToString(
            PortraitPanel.Render(new PlayerAppearance { BodyTint = tint }));
        Assert.NotEmpty(result);
    }

    public static IEnumerable<object[]> AllHairStyles() =>
        Enum.GetValues<HairStyle>().Select(v => new object[] { v });
    public static IEnumerable<object[]> AllEyeStyles() =>
        Enum.GetValues<EyeStyle>().Select(v => new object[] { v });
    public static IEnumerable<object[]> AllBodyStyles() =>
        Enum.GetValues<BodyStyle>().Select(v => new object[] { v });
    public static IEnumerable<object[]> AllLegStyles() =>
        Enum.GetValues<LegStyle>().Select(v => new object[] { v });
    public static IEnumerable<object[]> AllArmStyles() =>
        Enum.GetValues<ArmStyle>().Select(v => new object[] { v });
    public static IEnumerable<object[]> AllTintColors() =>
        Enum.GetValues<TintColor>().Select(v => new object[] { v });
}

public class ResourcePanelTests
{
    [Fact]
    public void Render_Empty_DoesNotThrow()
    {
        var state = GameState.Create("Test", Locale.EN);
        var result = RenderHelper.RenderToString(ResourcePanel.Render(state));
        Assert.NotEmpty(result);
    }

    [Theory]
    [MemberData(nameof(AllResourceTypes))]
    public void Render_SingleResource_DoesNotThrow(ResourceType type)
    {
        var state = GameState.Create("Test", Locale.EN);
        state.VisibleResources.Add(type);
        state.Resources[type] = new ResourceState(50, 100);
        var result = RenderHelper.RenderToString(ResourcePanel.Render(state));
        Assert.NotEmpty(result);
    }

    [Fact]
    public void Render_AllResources_DoesNotThrow()
    {
        var state = GameState.Create("Test", Locale.EN);
        foreach (var rt in Enum.GetValues<ResourceType>())
        {
            state.VisibleResources.Add(rt);
            state.Resources[rt] = new ResourceState(30 + (int)rt * 5, 100);
        }
        var result = RenderHelper.RenderToString(ResourcePanel.Render(state));
        Assert.NotEmpty(result);
    }

    [Fact]
    public void Render_ZeroCurrent_DoesNotThrow()
    {
        var state = GameState.Create("Test", Locale.EN);
        state.VisibleResources.Add(ResourceType.Gold);
        state.Resources[ResourceType.Gold] = new ResourceState(0, 100);
        var result = RenderHelper.RenderToString(ResourcePanel.Render(state));
        Assert.NotEmpty(result);
    }

    [Fact]
    public void Render_ZeroMax_DoesNotThrow()
    {
        var state = GameState.Create("Test", Locale.EN);
        state.VisibleResources.Add(ResourceType.Blood);
        state.Resources[ResourceType.Blood] = new ResourceState(0, 0);
        var result = RenderHelper.RenderToString(ResourcePanel.Render(state));
        Assert.NotEmpty(result);
    }

    [Fact]
    public void Render_FullResource_DoesNotThrow()
    {
        var state = GameState.Create("Test", Locale.EN);
        state.VisibleResources.Add(ResourceType.Gold);
        state.Resources[ResourceType.Gold] = new ResourceState(100, 100);
        var result = RenderHelper.RenderToString(ResourcePanel.Render(state));
        Assert.NotEmpty(result);
    }

    [Fact]
    public void Render_VisibleButNotInDict_Skipped()
    {
        var state = GameState.Create("Test", Locale.EN);
        state.VisibleResources.Add(ResourceType.Blood);
        // Not adding to Resources dict → should skip without crash
        var result = RenderHelper.RenderToString(ResourcePanel.Render(state));
        Assert.NotEmpty(result);
    }

    public static IEnumerable<object[]> AllResourceTypes() =>
        Enum.GetValues<ResourceType>().Select(v => new object[] { v });
}

public class StatsPanelTests
{
    [Fact]
    public void Render_Empty_DoesNotThrow()
    {
        var state = GameState.Create("Test", Locale.EN);
        var result = RenderHelper.RenderToString(StatsPanel.Render(state));
        Assert.NotEmpty(result);
    }

    [Theory]
    [MemberData(nameof(AllStatTypes))]
    public void Render_SingleStat_DoesNotThrow(StatType type)
    {
        var state = GameState.Create("Test", Locale.EN);
        state.VisibleStats.Add(type);
        state.Stats[type] = 42;
        var result = RenderHelper.RenderToString(StatsPanel.Render(state));
        Assert.NotEmpty(result);
    }

    [Fact]
    public void Render_AllStats_DoesNotThrow()
    {
        var state = GameState.Create("Test", Locale.EN);
        foreach (var st in Enum.GetValues<StatType>())
        {
            state.VisibleStats.Add(st);
            state.Stats[st] = 10 + (int)st * 3;
        }
        state.TotalBoxesOpened = 999;
        var result = RenderHelper.RenderToString(StatsPanel.Render(state));
        Assert.NotEmpty(result);
    }

    [Fact]
    public void Render_HighBoxCount_DoesNotThrow()
    {
        var state = GameState.Create("Test", Locale.EN);
        state.TotalBoxesOpened = 999_999;
        var result = RenderHelper.RenderToString(StatsPanel.Render(state));
        Assert.NotEmpty(result);
    }

    public static IEnumerable<object[]> AllStatTypes() =>
        Enum.GetValues<StatType>().Select(v => new object[] { v });
}

public class InventoryPanelTests
{
    [Fact]
    public void Render_Empty_DoesNotThrow()
    {
        var state = GameState.Create("Test", Locale.EN);
        var result = RenderHelper.RenderToString(InventoryPanel.Render(state));
        Assert.NotEmpty(result);
    }

    [Fact]
    public void Render_SingleItem_DoesNotThrow()
    {
        var state = GameState.Create("Test", Locale.EN);
        state.AddItem(ItemInstance.Create("health_potion_small"));
        var result = RenderHelper.RenderToString(InventoryPanel.Render(state));
        Assert.NotEmpty(result);
    }

    [Fact]
    public void Render_GroupedItems_DoesNotThrow()
    {
        var state = GameState.Create("Test", Locale.EN);
        state.AddItem(ItemInstance.Create("health_potion_small"));
        state.AddItem(ItemInstance.Create("health_potion_small"));
        state.AddItem(ItemInstance.Create("mana_crystal_small"));
        var result = RenderHelper.RenderToString(InventoryPanel.Render(state));
        Assert.NotEmpty(result);
    }

    [Fact]
    public void Render_WithLocalization_DoesNotThrow()
    {
        var state = GameState.Create("Test", Locale.EN);
        state.AddItem(ItemInstance.Create("health_potion_small"));
        var loc = new LocalizationManager(Locale.EN);
        var result = RenderHelper.RenderToString(InventoryPanel.Render(state, loc: loc));
        Assert.NotEmpty(result);
    }

    [Fact]
    public void Render_ManyItems_DoesNotThrow()
    {
        var state = GameState.Create("Test", Locale.EN);
        for (int i = 0; i < 50; i++)
            state.AddItem(ItemInstance.Create($"item_{i}"));
        var result = RenderHelper.RenderToString(InventoryPanel.Render(state));
        Assert.NotEmpty(result);
    }
}

// ── RenderContext + RendererFactory Tests ────────────────────────────────

public class RenderContextTests
{
    [Theory]
    [MemberData(nameof(AllUIFeatures))]
    public void Unlock_SetsFeature(UIFeature feature)
    {
        var ctx = new RenderContext();
        Assert.False(ctx.Has(feature));
        ctx.Unlock(feature);
        Assert.True(ctx.Has(feature));
    }

    [Fact]
    public void CompletionPercent_DefaultsToZero()
    {
        var ctx = new RenderContext();
        Assert.Equal(0, ctx.CompletionPercent);
    }

    [Fact]
    public void CompletionPercent_CanBeSet()
    {
        var ctx = new RenderContext();
        ctx.CompletionPercent = 75;
        Assert.Equal(75, ctx.CompletionPercent);
    }

    [Fact]
    public void FromGameState_MirrorsUnlockedFeatures()
    {
        var state = GameState.Create("Test", Locale.EN);
        state.UnlockedUIFeatures.Add(UIFeature.TextColors);
        state.UnlockedUIFeatures.Add(UIFeature.ArrowKeySelection);

        var ctx = RenderContext.FromGameState(state);
        Assert.True(ctx.HasColors);
        Assert.True(ctx.HasArrowSelection);
        Assert.False(ctx.HasInventoryPanel);
    }

    [Fact]
    public void FromGameState_Empty_AllFalse()
    {
        var state = GameState.Create("Test", Locale.EN);
        var ctx = RenderContext.FromGameState(state);

        Assert.False(ctx.HasColors);
        Assert.False(ctx.HasExtendedColors);
        Assert.False(ctx.HasArrowSelection);
        Assert.False(ctx.HasInventoryPanel);
        Assert.False(ctx.HasResourcePanel);
        Assert.False(ctx.HasStatsPanel);
        Assert.False(ctx.HasPortraitPanel);
        Assert.False(ctx.HasFullLayout);
        Assert.False(ctx.HasKeyboardShortcuts);
        Assert.False(ctx.HasBoxAnimation);
        Assert.False(ctx.HasCraftingPanel);
        Assert.False(ctx.HasCompletionTracker);
    }

    public static IEnumerable<object[]> AllUIFeatures() =>
        Enum.GetValues<UIFeature>().Select(v => new object[] { v });
}

public class RendererFactoryTests
{
    [Fact]
    public void Create_NoFeatures_ReturnsBasicRenderer()
    {
        var ctx = new RenderContext();
        var loc = new LocalizationManager(Locale.EN);
        var renderer = RendererFactory.Create(ctx, loc);
        Assert.IsType<BasicRenderer>(renderer);
    }

    [Theory]
    [InlineData(UIFeature.TextColors)]
    [InlineData(UIFeature.ExtendedColors)]
    [InlineData(UIFeature.ArrowKeySelection)]
    [InlineData(UIFeature.InventoryPanel)]
    [InlineData(UIFeature.ResourcePanel)]
    [InlineData(UIFeature.StatsPanel)]
    [InlineData(UIFeature.PortraitPanel)]
    [InlineData(UIFeature.FullLayout)]
    [InlineData(UIFeature.KeyboardShortcuts)]
    [InlineData(UIFeature.BoxAnimation)]
    [InlineData(UIFeature.CraftingPanel)]
    public void Create_WithSpectreFeature_ReturnsSpectreRenderer(UIFeature feature)
    {
        var ctx = new RenderContext();
        ctx.Unlock(feature);
        var loc = new LocalizationManager(Locale.EN);
        var renderer = RendererFactory.Create(ctx, loc);
        Assert.IsType<SpectreRenderer>(renderer);
    }

    [Fact]
    public void Create_CompletionTrackerOnly_ReturnsBasicRenderer()
    {
        // CompletionTracker alone doesn't require Spectre features
        var ctx = new RenderContext();
        ctx.Unlock(UIFeature.CompletionTracker);
        var loc = new LocalizationManager(Locale.EN);
        var renderer = RendererFactory.Create(ctx, loc);
        Assert.IsType<BasicRenderer>(renderer);
    }
}

// ── SpectreRenderer Output Tests ────────────────────────────────────────

[Collection("ConsoleTests")]
public class SpectreRendererOutputTests : IDisposable
{
    private readonly ConsoleCapture _capture = new();
    private readonly LocalizationManager _loc = new(Locale.EN);

    public void Dispose() => _capture.Dispose();

    private SpectreRenderer CreateRenderer(params UIFeature[] features)
    {
        var ctx = new RenderContext();
        foreach (var f in features) ctx.Unlock(f);
        return new SpectreRenderer(ctx, _loc);
    }

    // ── ShowMessage ──

    [Fact]
    public void ShowMessage_NoFeatures_DoesNotThrow()
    {
        var r = CreateRenderer();
        r.ShowMessage("Hello world");
        Assert.NotEmpty(_capture.Output);
    }

    [Fact]
    public void ShowMessage_HasColors_DoesNotThrow()
    {
        var r = CreateRenderer(UIFeature.TextColors);
        r.ShowMessage("Hello world");
        Assert.NotEmpty(_capture.Output);
    }

    [Fact]
    public void ShowMessage_WithBrackets_DoesNotThrow()
    {
        var r = CreateRenderer(UIFeature.TextColors);
        r.ShowMessage("This has [red] brackets [/] in it");
        Assert.NotEmpty(_capture.Output);
    }

    // ── ShowError ──

    [Fact]
    public void ShowError_NoFeatures_DoesNotThrow()
    {
        var r = CreateRenderer();
        r.ShowError("Something went wrong");
        Assert.NotEmpty(_capture.Output);
    }

    [Fact]
    public void ShowError_HasColors_DoesNotThrow()
    {
        var r = CreateRenderer(UIFeature.TextColors);
        r.ShowError("Something went wrong");
        Assert.NotEmpty(_capture.Output);
    }

    // ── ShowBoxOpening (no animation) ──

    [Fact]
    public void ShowBoxOpening_NoFeatures_DoesNotThrow()
    {
        var r = CreateRenderer();
        r.ShowBoxOpening("Test Box", "Common");
        Assert.NotEmpty(_capture.Output);
    }

    [Fact]
    public void ShowBoxOpening_HasColors_DoesNotThrow()
    {
        var r = CreateRenderer(UIFeature.TextColors);
        r.ShowBoxOpening("Cool Box", "Rare");
        Assert.NotEmpty(_capture.Output);
    }

    [Theory]
    [InlineData("Common")]
    [InlineData("Uncommon")]
    [InlineData("Rare")]
    [InlineData("Epic")]
    [InlineData("Legendary")]
    [InlineData("Mythic")]
    [InlineData("Unknown")]
    public void ShowBoxOpening_AllRarities_DoesNotThrow(string rarity)
    {
        var r = CreateRenderer(UIFeature.TextColors);
        r.ShowBoxOpening("Box", rarity);
        Assert.NotEmpty(_capture.Output);
    }

    // ── ShowLootReveal ──

    private static List<(string, string, string)> SampleLoot() =>
    [
        ("Health Potion", "Common", "Consumable"),
        ("Epic Sword", "Epic", "Equipment"),
        ("Box of Boxes", "Uncommon", "Box")
    ];

    [Fact]
    public void ShowLootReveal_NoFeatures_DoesNotThrow()
    {
        var r = CreateRenderer();
        r.ShowLootReveal(SampleLoot());
        Assert.NotEmpty(_capture.Output);
    }

    [Fact]
    public void ShowLootReveal_HasColors_DoesNotThrow()
    {
        var r = CreateRenderer(UIFeature.TextColors);
        r.ShowLootReveal(SampleLoot());
        Assert.NotEmpty(_capture.Output);
    }

    [Fact]
    public void ShowLootReveal_HasInventoryPanel_DoesNotThrow()
    {
        var r = CreateRenderer(UIFeature.TextColors, UIFeature.InventoryPanel);
        r.ShowLootReveal(SampleLoot());
        Assert.NotEmpty(_capture.Output);
    }

    [Fact]
    public void ShowLootReveal_EmptyList_DoesNotThrow()
    {
        var r = CreateRenderer(UIFeature.TextColors, UIFeature.InventoryPanel);
        r.ShowLootReveal([]);
        // Empty is OK, no crash
    }

    [Fact]
    public void ShowLootReveal_ItemNameWithBrackets_DoesNotThrow()
    {
        var r = CreateRenderer(UIFeature.TextColors);
        r.ShowLootReveal([("[Special] Item", "Rare", "Box")]);
        Assert.NotEmpty(_capture.Output);
    }

    // ── ShowAdventureDialogue ──

    [Fact]
    public void ShowAdventureDialogue_WithCharacter_NoFeatures_DoesNotThrow()
    {
        var r = CreateRenderer();
        r.ShowAdventureDialogue("Guard", "Halt!");
        Assert.NotEmpty(_capture.Output);
    }

    [Fact]
    public void ShowAdventureDialogue_WithoutCharacter_NoFeatures_DoesNotThrow()
    {
        var r = CreateRenderer();
        r.ShowAdventureDialogue(null, "The wind howls.");
        Assert.NotEmpty(_capture.Output);
    }

    [Fact]
    public void ShowAdventureDialogue_WithCharacter_HasColors_DoesNotThrow()
    {
        var r = CreateRenderer(UIFeature.TextColors);
        r.ShowAdventureDialogue("Dragon", "Prepare yourself!");
        Assert.NotEmpty(_capture.Output);
    }

    [Fact]
    public void ShowAdventureDialogue_WithoutCharacter_HasColors_DoesNotThrow()
    {
        var r = CreateRenderer(UIFeature.TextColors);
        r.ShowAdventureDialogue(null, "A mysterious voice echoes.");
        Assert.NotEmpty(_capture.Output);
    }

    // ── ShowUIFeatureUnlocked ──

    [Fact]
    public void ShowUIFeatureUnlocked_NoFeatures_DoesNotThrow()
    {
        var r = CreateRenderer();
        r.ShowUIFeatureUnlocked("Text Colors");
        Assert.NotEmpty(_capture.Output);
    }

    [Fact]
    public void ShowUIFeatureUnlocked_HasColors_DoesNotThrow()
    {
        var r = CreateRenderer(UIFeature.TextColors);
        r.ShowUIFeatureUnlocked("Inventory Panel");
        Assert.NotEmpty(_capture.Output);
    }

    // ── ShowInteraction ──

    [Fact]
    public void ShowInteraction_NoFeatures_DoesNotThrow()
    {
        var r = CreateRenderer();
        r.ShowInteraction("You found something interesting.");
        Assert.NotEmpty(_capture.Output);
    }

    [Fact]
    public void ShowInteraction_HasColors_DoesNotThrow()
    {
        var r = CreateRenderer(UIFeature.TextColors);
        r.ShowInteraction("A secret passage opens.");
        Assert.NotEmpty(_capture.Output);
    }

    // ── ShowGameState ──

    [Fact]
    public void ShowGameState_NoFeatures_DoesNotThrow()
    {
        var state = GameState.Create("Test", Locale.EN);
        var ctx = new RenderContext();
        var r = new SpectreRenderer(ctx, _loc);
        r.ShowGameState(state, ctx);
        // No panels → minimal or no output, but no crash
    }

    [Fact]
    public void ShowGameState_SequentialPanels_DoesNotThrow()
    {
        var state = CreateFullState();
        var ctx = new RenderContext();
        ctx.Unlock(UIFeature.TextColors);
        ctx.Unlock(UIFeature.PortraitPanel);
        ctx.Unlock(UIFeature.StatsPanel);
        ctx.Unlock(UIFeature.ResourcePanel);
        ctx.Unlock(UIFeature.InventoryPanel);
        ctx.Unlock(UIFeature.CompletionTracker);
        ctx.CompletionPercent = 42;
        var r = new SpectreRenderer(ctx, _loc);
        r.ShowGameState(state, ctx);
        Assert.NotEmpty(_capture.Output);
    }

    [Fact]
    public void ShowGameState_FullLayout_DoesNotThrow()
    {
        var state = CreateFullState();
        var ctx = new RenderContext();
        foreach (var f in Enum.GetValues<UIFeature>())
            ctx.Unlock(f);
        ctx.CompletionPercent = 88;
        var r = new SpectreRenderer(ctx, _loc);
        r.ShowGameState(state, ctx);
        Assert.NotEmpty(_capture.Output);
    }

    [Fact]
    public void ShowGameState_FullLayout_PartialPanels_DoesNotThrow()
    {
        var state = GameState.Create("Test", Locale.EN);
        var ctx = new RenderContext();
        ctx.Unlock(UIFeature.TextColors);
        ctx.Unlock(UIFeature.FullLayout);
        // FullLayout unlocked but individual panels are NOT → shows placeholder "???"
        var r = new SpectreRenderer(ctx, _loc);
        r.ShowGameState(state, ctx);
        Assert.NotEmpty(_capture.Output);
    }

    // ── Clear ──

    [Fact]
    public void Clear_DoesNotThrow()
    {
        var r = CreateRenderer(UIFeature.TextColors);
        r.Clear(); // May throw IOException internally, should be caught
    }

    // ── Helpers ──

    private static GameState CreateFullState()
    {
        var state = GameState.Create("Test", Locale.EN);
        state.Appearance = new PlayerAppearance
        {
            HairStyle = HairStyle.Short,
            EyeStyle = EyeStyle.Blue,
            BodyStyle = BodyStyle.RegularTShirt,
            LegStyle = LegStyle.Short,
            ArmStyle = ArmStyle.Regular
        };
        state.AddItem(ItemInstance.Create("gold_pouch"));
        state.AddItem(ItemInstance.Create("box_of_boxes"));
        state.VisibleResources.Add(ResourceType.Gold);
        state.Resources[ResourceType.Gold] = new ResourceState(75, 100);
        state.VisibleStats.Add(StatType.Strength);
        state.Stats[StatType.Strength] = 15;
        state.TotalBoxesOpened = 42;
        return state;
    }
}

// ── BasicRenderer Output Tests ──────────────────────────────────────────

[Collection("ConsoleTests")]
public class BasicRendererOutputTests : IDisposable
{
    private readonly ConsoleCapture _capture = new();
    private readonly LocalizationManager _loc = new(Locale.EN);
    private readonly BasicRenderer _renderer;

    public BasicRendererOutputTests()
    {
        _renderer = new BasicRenderer(_loc);
    }

    public void Dispose() => _capture.Dispose();

    [Fact]
    public void ShowMessage_WritesToConsole()
    {
        _renderer.ShowMessage("Test message");
        Assert.Contains("Test message", _capture.Output);
    }

    [Fact]
    public void ShowError_WritesWithPrefix()
    {
        _renderer.ShowError("Bad thing");
        Assert.Contains("ERROR", _capture.Output);
    }

    [Fact]
    public void ShowBoxOpening_DoesNotThrow()
    {
        _renderer.ShowBoxOpening("Test Box", "Rare");
        Assert.NotEmpty(_capture.Output);
    }

    [Fact]
    public void ShowLootReveal_WritesItems()
    {
        _renderer.ShowLootReveal([("Sword", "Epic", "Equipment")]);
        Assert.Contains("Sword", _capture.Output);
    }

    [Fact]
    public void ShowLootReveal_EmptyList_DoesNotThrow()
    {
        _renderer.ShowLootReveal([]);
        // No items → just the header line
    }

    [Fact]
    public void ShowGameState_WithCompletionTracker_ShowsPercent()
    {
        var state = GameState.Create("Test", Locale.EN);
        var ctx = new RenderContext();
        ctx.Unlock(UIFeature.CompletionTracker);
        ctx.CompletionPercent = 55;
        _renderer.ShowGameState(state, ctx);
        Assert.Contains("55", _capture.Output);
    }

    [Fact]
    public void ShowGameState_WithoutCompletionTracker_ShowsBoxCount()
    {
        var state = GameState.Create("Test", Locale.EN);
        var ctx = new RenderContext();
        _renderer.ShowGameState(state, ctx);
        // Early-game: shows box counter even without panels unlocked
        Assert.Contains("Boxes Opened", _capture.Output);
    }

    [Fact]
    public void ShowAdventureDialogue_WithCharacter_DoesNotThrow()
    {
        _renderer.ShowAdventureDialogue("NPC", "Hello!");
        Assert.Contains("NPC", _capture.Output);
    }

    [Fact]
    public void ShowAdventureDialogue_WithoutCharacter_DoesNotThrow()
    {
        _renderer.ShowAdventureDialogue(null, "Narration text.");
        Assert.Contains("Narration", _capture.Output);
    }

    [Fact]
    public void ShowUIFeatureUnlocked_DoesNotThrow()
    {
        _renderer.ShowUIFeatureUnlocked("Text Colors");
        Assert.Contains("Text Colors", _capture.Output);
    }

    [Fact]
    public void ShowInteraction_DoesNotThrow()
    {
        _renderer.ShowInteraction("Something happens");
        Assert.Contains("Something happens", _capture.Output);
    }

    [Fact]
    public void Clear_DoesNotThrow()
    {
        _renderer.Clear();
    }
}

// ── Input Method Tests ──────────────────────────────────────────────────

[Collection("ConsoleTests")]
public class RendererInputTests : IDisposable
{
    private readonly ConsoleCapture _capture = new();
    private readonly LocalizationManager _loc = new(Locale.EN);
    private readonly TextReader _origIn;

    public RendererInputTests()
    {
        _origIn = Console.In;
    }

    public void Dispose()
    {
        Console.SetIn(_origIn);
        _capture.Dispose();
    }

    [Fact]
    public void BasicRenderer_ShowSelection_ReturnsCorrectIndex()
    {
        Console.SetIn(new StringReader("2\n"));
        var r = new BasicRenderer(_loc);
        int result = r.ShowSelection("Choose:", ["A", "B", "C"]);
        Assert.Equal(1, result);
    }

    [Fact]
    public void BasicRenderer_ShowTextInput_ReturnsInput()
    {
        Console.SetIn(new StringReader("Hello\n"));
        var r = new BasicRenderer(_loc);
        string result = r.ShowTextInput("Name");
        Assert.Equal("Hello", result);
    }

    [Fact]
    public void BasicRenderer_ShowAdventureChoice_ReturnsIndex()
    {
        Console.SetIn(new StringReader("1\n"));
        var r = new BasicRenderer(_loc);
        int result = r.ShowAdventureChoice(["Fight", "Run"]);
        Assert.Equal(0, result);
    }

    [Fact]
    public void SpectreRenderer_ShowSelection_NoArrow_ReturnsIndex()
    {
        Console.SetIn(new StringReader("3\n"));
        var ctx = new RenderContext();
        // No arrow selection → falls through to number input path
        var r = new SpectreRenderer(ctx, _loc);
        int result = r.ShowSelection("Pick:", ["X", "Y", "Z"]);
        Assert.Equal(2, result);
    }

    [Fact]
    public void SpectreRenderer_ShowSelection_HasColorsNoArrow_ReturnsIndex()
    {
        Console.SetIn(new StringReader("1\n"));
        var ctx = new RenderContext();
        ctx.Unlock(UIFeature.TextColors);
        var r = new SpectreRenderer(ctx, _loc);
        int result = r.ShowSelection("Pick:", ["Only"]);
        Assert.Equal(0, result);
    }
}