#if UNITY_EDITOR
using Sirenix.OdinInspector.Editor;
using UnityEditor;
using UnityEngine;

namespace SLSUtilities.Feedback.Editor
{
    /// <summary>
    /// 为标记了 [ShakeCurvePreset] 的 AnimationCurve 字段绘制预设按钮组。
    /// 按钮紧凑排列在曲线编辑器下方。
    /// </summary>
    public sealed class ShakeCurvePresetDrawer : OdinAttributeDrawer<ShakeCurvePresetAttribute, AnimationCurve>
    {
        private const float BUTTON_HEIGHT = 18f;
        private const float BUTTON_SPACING = 2f;

        protected override void DrawPropertyLayout(GUIContent label)
        {
            // 先绘制默认的曲线字段
            CallNextDrawer(label);

            // 绘制预设按钮行
            DrawPresetButtons();
        }

        private void DrawPresetButtons()
        {
            var presets = ShakeCurvePresets.All;
            if (presets == null || presets.Length == 0) return;

            Rect totalRect = EditorGUILayout.GetControlRect(false, BUTTON_HEIGHT);

            // 计算每个按钮的宽度
            float totalSpacing = BUTTON_SPACING * (presets.Length - 1);
            float buttonWidth = (totalRect.width - totalSpacing) / presets.Length;

            GUIStyle buttonStyle = new GUIStyle(EditorStyles.miniButton)
            {
                fontSize = 8,
                padding = new RectOffset(1, 1, 1, 1),
                fixedHeight = BUTTON_HEIGHT
            };

            for (int i = 0; i < presets.Length; i++)
            {
                float x = totalRect.x + i * (buttonWidth + BUTTON_SPACING);
                Rect buttonRect = new Rect(x, totalRect.y, buttonWidth, BUTTON_HEIGHT);

                if (GUI.Button(buttonRect, presets[i].name, buttonStyle))
                {
                    // 记录 Undo 以便撤销
                    if (Property.Tree.UnitySerializedObject != null)
                    {
                        Undo.RecordObject(
                            Property.Tree.UnitySerializedObject.targetObject,
                            $"Apply Shake Curve Preset: {presets[i].name}"
                        );
                    }

                    ValueEntry.SmartValue = presets[i].factory();
                    ValueEntry.ApplyChanges();
                }
            }
        }
    }
}
#endif