using UnityEditor;
using UnityEngine;

[CustomEditor(typeof(MonoBehaviour), true)]
public class ScriptDescriptionEditor : Editor
{
    private GUIStyle descriptionStyle;

    private void OnEnable()
    {
        descriptionStyle = new GUIStyle(EditorStyles.label)
        {
            wordWrap = true,
            alignment = TextAnchor.MiddleCenter,
            normal = { background = MakeTex(2, 2, new Color(0.1509434f, 0.1473834f, 0.1473834f, 1f)), textColor = Color.white },
            padding = new RectOffset(10, 10, 10, 10),
            margin = new RectOffset(0, 0, 10, 10)
        };
    }

    private Texture2D MakeTex(int width, int height, Color col)
    {
        Color[] pix = new Color[width * height];
        for (int i = 0; i < pix.Length; i++)
            pix[i] = col;
        Texture2D result = new Texture2D(width, height);
        result.SetPixels(pix);
        result.Apply();
        return result;
    }

    public override void OnInspectorGUI()
    {
        // 获取目标脚本的类型
        var type = target.GetType();

        // 获取 ScriptDescription 属性
        var descriptionAttribute = (ScriptDescriptionAttribute)System.Attribute.GetCustomAttribute(type, typeof(ScriptDescriptionAttribute));

        // 如果属性存在，显示描述
        if (descriptionAttribute != null)
        {
            // EditorGUILayout.HelpBox(descriptionAttribute.Description, MessageType.Info);
            // EditorGUILayout.LabelField(descriptionAttribute.Description, EditorStyles.wordWrappedLabel);
            // EditorGUILayout.Space();
            
            GUILayout.Label(descriptionAttribute.Description, descriptionStyle);

        }

        // 绘制默认的 Inspector
        DrawDefaultInspector();
    }
}