using UnityEditor;
using UnityEngine;
using Architecture.Variables;

namespace Architecture.Editor
{
    /// <summary>
    /// 变量资产的 Inspector 绘制器：在字段右侧实时显示当前值（含 Play 模式运行时值），
    /// 设计师无需打开脚本即可看到数值，降低沟通成本。
    /// </summary>
    [CustomPropertyDrawer(typeof(FloatVariable))]
    [CustomPropertyDrawer(typeof(IntVariable))]
    [CustomPropertyDrawer(typeof(BoolVariable))]
    [CustomPropertyDrawer(typeof(Vector3Variable))]
    public class VariableDrawer : PropertyDrawer
    {
        public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
        {
            EditorGUI.BeginProperty(position, label, property);
            var target = property.objectReferenceValue as ScriptableObject;
            if (target != null)
            {
                var so = new SerializedObject(target);
                so.Update();
                var valueProp = so.FindProperty("_value");
                Rect objRect = new Rect(position.x, position.y, position.width * 0.58f, position.height);
                Rect valRect = new Rect(position.x + position.width * 0.60f, position.y, position.width * 0.40f, position.height);
                EditorGUI.ObjectField(objRect, property, GUIContent.none);
                if (valueProp != null)
                {
                    EditorGUI.BeginDisabledGroup(true);
                    EditorGUI.PropertyField(valRect, valueProp, GUIContent.none);
                    EditorGUI.EndDisabledGroup();
                }
            }
            else
            {
                EditorGUI.ObjectField(position, property, label);
            }
            EditorGUI.EndProperty();
        }
    }
}