@using Sandbox;
@using Sandbox.UI;
@namespace Battlebugs
@inherits PanelComponent


<root class="@(Segment is null ? "hidden" : "")">
    @if (Segment is null) return;
    <div class="header">
        <h1>@Segment.Bug.Name</h1>
        <div class="segments">
            @for (var i = 0; i < Segment.Bug.SegmentCount; i++)
            {
                var index = Segment.Bug.SegmentCount - 1 - i;
                var segment = Scene.GetAllComponents<BugSegment>().FirstOrDefault(x => x.GameObject.Name == Segment.GameObject.Name && x.Index == index);
                @* <div class="@(segment == Segment ? "this" : "")" style="background-color: @((segment?.Bug?.Color ?? Color.Black).Hex)" /> *@
                <img class="@(segment == Segment ? "this" : "")" src="@GetIcon(Segment.Bug, index)" />
            }
        </div>
    </div>
    <div class="healthbar">
        <div class="inner">
            @if (true)
            {
                var value = Segment.Health / Segment.Bug.StartingHealth;
                <div class="fill" style="background-color: @(HealthGradient.Evaluate(1f - value).Hex); width: @(value * 100f)%;" />
            }
        </div>
    </div>
</root>

@code
{
    public static InspectorPanel Instance { get; private set; }
    public BugSegment Segment { get; set; }

    [Property] Gradient HealthGradient { get; set; }

    protected override void OnAwake()
    {
        Instance = this;
    }

    protected override void OnUpdate()
    {
        if (!Segment.IsValid()) return;

        var pos = Scene.Camera.PointToScreenPixels(Segment.WorldPosition);
        pos.x /= Scene.Camera.ScreenRect.Size.x;
        pos.y /= Scene.Camera.ScreenRect.Size.y;
        pos *= 100f;

        Panel.Style.Left = Length.Percent(pos.x + 2.5f);
        Panel.Style.Bottom = Length.Percent(100f - pos.y);
    }

    string GetIcon(BugResource bug, int index)
    {
        if (index == 0) return bug.GetTailIcon();
        if (index == bug.SegmentCount - 1) return bug.GetHeadIcon();
        return bug.GetBodyIcon();
    }

    protected override int BuildHash() => System.HashCode.Combine(Segment);
}