using UnityEditor;
using UnityEngine;

[CustomPropertyDrawer(typeof(HintInfo))]
public class HintInfoDrawer : PropertyDrawer
{
    public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
    {
        // Step 1: 获取 hintId
        var hintIdProp = property.FindPropertyRelative("HintType");
        var hintNameProp =property.FindPropertyRelative("HintName");

        
        string hintIdText = hintIdProp != null ? hintIdProp.uintValue.ToString() : "???";
        string hintNameText = hintNameProp != null ? hintNameProp.stringValue : "Unnamed";
        string rawLabel = $"{hintNameText}";

        // Step 4: 显示 Foldout
        property.isExpanded = EditorGUI.Foldout(
            new Rect(position.x, position.y, position.width, EditorGUIUtility.singleLineHeight),
            property.isExpanded,
            rawLabel
        );

        // Step 5: 展开显示所有字段
        if (property.isExpanded)
        {
            EditorGUI.indentLevel++;
            float y = position.y + EditorGUIUtility.singleLineHeight;

            SerializedProperty childProp = property.Copy();
            SerializedProperty end = childProp.GetEndProperty();

            childProp.NextVisible(true); // 进入第一个子属性

            while (!SerializedProperty.EqualContents(childProp, end))
            {
                float h = EditorGUI.GetPropertyHeight(childProp, true);
                EditorGUI.PropertyField(
                    new Rect(position.x, y, position.width, h),
                    childProp,
                    true
                );
                y += h + EditorGUIUtility.standardVerticalSpacing;

                if (!childProp.NextVisible(false))
                    break;
            }

            EditorGUI.indentLevel--;
        }
    }

    public override float GetPropertyHeight(SerializedProperty property, GUIContent label)
    {
        float height = EditorGUIUtility.singleLineHeight;

        if (property.isExpanded)
        {
            SerializedProperty childProp = property.Copy();
            SerializedProperty end = childProp.GetEndProperty();

            childProp.NextVisible(true); // 进入第一个子属性

            while (!SerializedProperty.EqualContents(childProp, end))
            {
                height += EditorGUI.GetPropertyHeight(childProp, true) + EditorGUIUtility.standardVerticalSpacing;
                if (!childProp.NextVisible(false))
                    break;
            }
        }

        return height;
    }
}