using AcDream.App.Studio;
using AcDream.App.UI;
using AcDream.App.UI.Layout;

namespace AcDream.App.Tests.UI.Layout;

/// <summary>
/// Unit tests for <see cref="CharacterController"/> and <see cref="SampleData.SampleCharacter"/>.
/// The controller CREATES the m_pMainText report element (0x1000011d) at bind time — retail's
/// gm*UI builds it at runtime; it is not a static dat element — and attaches it to the layout root.
/// No dats, no GL — pure data-wiring + report-content tests.
/// </summary>
public class CharacterControllerTests
{
    /// <summary>Bind on an empty layout, then return the created m_pMainText element.</summary>
    private static UiText BindAndGetText(System.Func<CharacterSheet> data)
    {
        var layout = FakeLayout();
        CharacterController.Bind(layout, data);
        return layout.Root.Children.OfType<UiText>()
            .First(t => t.EventId == CharacterController.MainTextId);
    }

    private static string Report(System.Func<CharacterSheet> data)
        => string.Join("\n", BindAndGetText(data).LinesProvider().Select(l => l.Text));

    // ── Test 1: Bind creates m_pMainText with a non-empty report ──────────────

    [Fact]
    public void Bind_CreatesMainTextWithReport()
    {
        var text = BindAndGetText(SampleData.SampleCharacter);
        Assert.True(text.LinesProvider().Count > 0, "Expected non-empty report after Bind");
    }

    // ── Test 2: Report contains all six attribute names (decomp order 1,2,4,3,5,6) ───

    [Fact]
    public void Bind_ReportContainsAllSixAttributes()
    {
        var allText = Report(SampleData.SampleCharacter);
        Assert.Contains("Strength",     allText);
        Assert.Contains("Endurance",    allText);
        Assert.Contains("Quickness",    allText);
        Assert.Contains("Coordination", allText);
        Assert.Contains("Focus",        allText);
        Assert.Contains("Self",         allText);
    }

    // ── Test 3: Report contains vitals section ────────────────────────────────

    [Fact]
    public void Bind_ReportContainsVitals()
    {
        var allText = Report(SampleData.SampleCharacter);
        Assert.Contains("Health",  allText);
        Assert.Contains("Stamina", allText);
        Assert.Contains("Mana",    allText);
    }

    // ── Test 4: Report contains encumbrance / burden section ─────────────────

    [Fact]
    public void Bind_ReportContainsBurden()
    {
        var allText = Report(SampleData.SampleCharacter);
        Assert.Contains("Burden",   allText);
        Assert.Contains("Capacity", allText);
    }

    // ── Test 5: Report contains the sample character's name ──────────────────

    [Fact]
    public void Bind_ReportContainsSampleName()
        => Assert.Contains("Studio Player", Report(SampleData.SampleCharacter));

    // ── Test 6: Bind on a layout WITHOUT the element creates it (no throw) ────

    [Fact]
    public void Bind_OnEmptyLayout_CreatesElement()
    {
        var layout = FakeLayout();   // no MainTextId present
        CharacterController.Bind(layout, SampleData.SampleCharacter);
        Assert.Contains(layout.Root.Children.OfType<UiText>(),
            t => t.EventId == CharacterController.MainTextId);
    }

    // ── Test 7: The created element carries the m_pMainText id ───────────────

    [Fact]
    public void Bind_CreatedElementHasMainTextId()
        => Assert.Equal(CharacterController.MainTextId, BindAndGetText(SampleData.SampleCharacter).EventId);

    // ── Test 8: SampleCharacter fixture has non-zero attribute values ─────────

    [Fact]
    public void SampleCharacter_AttributesAreNonZero()
    {
        var s = SampleData.SampleCharacter();
        Assert.True(s.Strength     > 0, "Strength must be > 0");
        Assert.True(s.Endurance    > 0, "Endurance must be > 0");
        Assert.True(s.Quickness    > 0, "Quickness must be > 0");
        Assert.True(s.Coordination > 0, "Coordination must be > 0");
        Assert.True(s.Focus        > 0, "Focus must be > 0");
        Assert.True(s.Self         > 0, "Self must be > 0");
    }

    // ── Test 9: SampleCharacter fixture has coherent vitals ──────────────────

    [Fact]
    public void SampleCharacter_VitalsAreCoherent()
    {
        var s = SampleData.SampleCharacter();
        Assert.True(s.HealthCurrent  > 0 && s.HealthCurrent  <= s.HealthMax,  "Health cur must be in [1, max]");
        Assert.True(s.StaminaCurrent > 0 && s.StaminaCurrent <= s.StaminaMax, "Stamina cur must be in [1, max]");
        Assert.True(s.ManaCurrent    > 0 && s.ManaCurrent    <= s.ManaMax,    "Mana cur must be in [1, max]");
    }

    // ── Test 10: Report contains attribute VALUES from the fixture ────────────

    [Fact]
    public void Bind_ReportContainsSampleAttributeValues()
    {
        var sheet = SampleData.SampleCharacter();
        var allText = Report(() => sheet);
        Assert.Contains(sheet.Strength.ToString(),     allText);
        Assert.Contains(sheet.Endurance.ToString(),    allText);
        Assert.Contains(sheet.Quickness.ToString(),    allText);
        Assert.Contains(sheet.Coordination.ToString(), allText);
        Assert.Contains(sheet.Focus.ToString(),        allText);
        Assert.Contains(sheet.Self.ToString(),         allText);
    }

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

    private static ImportedLayout FakeLayout(params (uint id, UiElement e)[] items)
    {
        var dict = new Dictionary<uint, UiElement>();
        var root = new UiPanel();
        foreach (var (id, e) in items)
        {
            root.AddChild(e);
            dict[id] = e;
        }
        return new ImportedLayout(root, dict);
    }
}