using Godot;

namespace Theriapolis.GodotHost.Scenes.Widgets;

/// <summary>
/// Small chip widget. The hover trigger for a trait/skill/detriment.
/// Per GODOT_PORTING_GUIDE.md §6.2: on mouse-enter, asks the shared
/// <see cref="PopoverLayer"/> to show the popover at this chip's global
/// rect; on exit, schedules close (popover stays alive if the cursor
/// then enters the popover itself).
///
/// Lightweight — every clade trait list, every skill row, every bonus
/// pill spawns several of these. The actual popover panel is a single
/// reused instance owned by PopoverLayer, not one per chip.
/// </summary>
public partial class TraitChip : PanelContainer
{
    [Export] public string TraitName { get; set; } = "";
    [Export] public string Description { get; set; } = "";
    [Export] public string Tag { get; set; } = "";
    [Export] public bool Detriment { get; set; }

    private Label _label = null!;

    public override void _Ready()
    {
        // Pass so click events bubble up to the parent card's GuiInput
        // (selecting the card). Hover signals fire regardless of filter
        // mode — they're driven by cursor-rect intersection, not input
        // event routing.
        MouseFilter = MouseFilterEnum.Pass;
        ApplyVariation();
        _label = new Label
        {
            Text = TraitName,
            MouseFilter = MouseFilterEnum.Ignore,
        };
        AddChild(_label);
        MouseEntered += OnHoverEntered;
        MouseExited += OnHoverExited;
    }

    public void SetTrait(string name, string description, string tag = "", bool detriment = false)
    {
        TraitName = name;
        Description = description;
        Tag = tag;
        Detriment = detriment;
        if (_label is not null) _label.Text = name;
        ApplyVariation();
    }

    private void ApplyVariation()
    {
        ThemeTypeVariation = Detriment ? "PillDetriment" : "Pill";
    }

    private void OnHoverEntered()
    {
        PopoverLayer.Instance?.ShowFor(this, TraitName, Description, Tag, Detriment);
    }

    private void OnHoverExited()
    {
        PopoverLayer.Instance?.ScheduleClose();
    }
}
