using Lean.Pool;
using UnityEngine;
using UnityEngine.Events;
using UnityEngine.UI;

namespace Ichni.Editor
{
    /// <summary>
    /// 按钮 Drawer，不绑定数据字段。
    /// 创建 DynamicUIButton 并绑定 ButtonAction。
    /// </summary>
    public class ButtonDrawer : IPropertyDrawer
    {
        public int DefaultSpan => 1;
        public float DefaultHeight => LayoutPacker.DefaultRowHeight;

        public DynamicUIElement Draw(DrawContext ctx)
        {
            var go = LeanPool.Spawn(ctx.Registry.GetPrefab("button"), ctx.Parent);
            var element = go.GetComponent<DynamicUIButton>();

            element.SetText(ctx.Label);
            element.Initialize(ctx.Target, ctx.Label, string.Empty);

            if (ctx.ButtonAction != null)
            {
                UnityAction action = () => ctx.ButtonAction();
                element.ApplyFunction(action);
            }

            DynamicUIElement.DisableNavigation(element.button);

            int span = ctx.OverrideSpan ?? DefaultSpan;
            float height = ctx.OverrideHeight ?? DefaultHeight;
            element.SetLayoutSize(span * LayoutPacker.TotalRowWidth / LayoutPacker.MaxSpanPerRow, height);

            return element;
        }
    }
}