using AcDream.App.Combat;
using AcDream.App.UI;
using AcDream.App.UI.Layout;
using AcDream.Core.Combat;

namespace AcDream.App.Tests.UI.Layout;

public sealed class CombatUiControllerTests
{
    private static (uint, int, int) NoTex(uint _) => (0u, 0, 0);

    [Fact]
    public void CombatMode_ShowsOnlyTargetedModes_AndSelectsMediumByDefault()
    {
        double now = 0d;
        var combat = new CombatState();
        using var attacks = CreateAttacks(combat, () => now, []);
        var (layout, _, _, power, high, medium, low) = BuildLayout();
        var visibility = new List<bool>();
        using var controller = CombatUiController.Bind(
            layout, combat, attacks, visibility.Add)!;

        controller.SyncVisibility();
        combat.SetCombatMode(CombatMode.Melee);
        combat.SetCombatMode(CombatMode.Magic);

        Assert.Equal([false, true, false], visibility);
        Assert.False(high.Selected);
        Assert.True(medium.Selected);
        Assert.False(low.Selected);
        Assert.Equal(CombatAttackController.InitialDesiredPower, power.ScalarPosition);
    }

    [Fact]
    public void AuthoredHeightButton_PressChargesAndReleaseSendsThroughSharedController()
    {
        double now = 4d;
        var sent = new List<(AttackHeight Height, float Power)>();
        var combat = new CombatState();
        using var attacks = CreateAttacks(combat, () => now, sent);
        var (layout, basic, advanced, power, high, _, _) = BuildLayout();
        using var controller = CombatUiController.Bind(
            layout, combat, attacks, _ => { })!;
        combat.SetCombatMode(CombatMode.Melee);

        high.OnEvent(new UiEvent(0, high, UiEventType.MouseDown, Data1: 2, Data2: 2));
        now = 4.5d;
        Assert.Equal(0.5f, power.ScalarFill()!.Value, 3);
        high.OnEvent(new UiEvent(0, high, UiEventType.MouseUp, Data1: 2, Data2: 2));

        var attack = Assert.Single(sent);
        Assert.Equal(AttackHeight.High, attack.Height);
        Assert.Equal(0.5f, attack.Power, 3);
        Assert.True(basic.Visible);
        Assert.False(advanced.Visible);
    }

    private static CombatAttackController CreateAttacks(
        CombatState combat,
        Func<double> now,
        List<(AttackHeight Height, float Power)> sent)
        => new(
            combat,
            () => true,
            (height, power) =>
            {
                sent.Add((height, power));
                return true;
            },
            autoRepeatAttack: () => false,
            now: now);

    private static (
        ImportedLayout Layout,
        UiElement Basic,
        UiElement Advanced,
        UiScrollbar Power,
        UiButton High,
        UiButton Medium,
        UiButton Low) BuildLayout()
    {
        var root = new UiPanel { Width = 610, Height = 90 };
        var basic = new UiPanel();
        var advanced = new UiPanel();
        var power = new UiScrollbar { Width = 507, Height = 14, Horizontal = true };
        UiButton Button(uint id) => new(
            new ElementInfo { Id = id, Type = 1, Width = 72, Height = 19 }, NoTex)
        {
            Width = 72,
            Height = 19,
        };
        var high = Button(CombatUiController.HighButtonId);
        var medium = Button(CombatUiController.MediumButtonId);
        var low = Button(CombatUiController.LowButtonId);
        var byId = new Dictionary<uint, UiElement>
        {
            [CombatUiController.BasicPanelId] = basic,
            [CombatUiController.AdvancedPanelId] = advanced,
            [CombatUiController.PowerControlId] = power,
            [CombatUiController.HighButtonId] = high,
            [CombatUiController.MediumButtonId] = medium,
            [CombatUiController.LowButtonId] = low,
        };
        return (new ImportedLayout(root, byId), basic, advanced, power, high, medium, low);
    }
}