#if UNITY_EDITOR
using System;
using UnityEditor;
using UnityEngine;

namespace AIGame.EditorTools
{
    /// <summary>
    /// Unity 获得焦点时自动转换 Doc/UIPrefabCreater 中变更的 UI JSON。
    /// </summary>
    [InitializeOnLoad]
    public static class JsonUIAutoConvert
    {
        private const string PrefKey = "AIGame.UI.AutoConvertJsonOnFocus";
        private static bool s_Busy;
        private static double s_LastTime;

        static JsonUIAutoConvert()
        {
            EditorApplication.focusChanged += OnFocusChanged;
        }

        private static void OnFocusChanged(bool focused)
        {
            if (!focused)
            {
                return;
            }
            AutoConvertOnFocus();
        }

        [MenuItem("Tools/UI/Convert Changed JSON Prefabs Now", false, 200)]
        public static void ConvertChangedNow()
        {
            ConvertChanged(false, "manual");
        }

        [MenuItem("Tools/UI/Auto Convert JSON On Focus", false, 202)]
        public static void ToggleAutoConvert()
        {
            bool enabled = !IsEnabled();
            EditorPrefs.SetBool(PrefKey, enabled);
            Menu.SetChecked("Tools/UI/Auto Convert JSON On Focus", enabled);
            Debug.Log("[UIGen] Auto convert JSON on focus: " + (enabled ? "enabled" : "disabled"));
        }

        [MenuItem("Tools/UI/Auto Convert JSON On Focus", true)]
        public static bool ToggleAutoConvertValidate()
        {
            Menu.SetChecked("Tools/UI/Auto Convert JSON On Focus", IsEnabled());
            return true;
        }

        public static void AutoConvertOnFocus()
        {
            if (!IsEnabled())
            {
                return;
            }
            ConvertChanged(false, "focus");
        }

        private static bool IsEnabled()
        {
            if (EditorPrefs.HasKey(PrefKey))
            {
                return EditorPrefs.GetBool(PrefKey, true);
            }
            return true;
        }

        private static void ConvertChanged(bool force, string reason)
        {
            if (s_Busy)
            {
                return;
            }
            if (!force && EditorApplication.timeSinceStartup - s_LastTime < 1.0)
            {
                return;
            }
            if (EditorApplication.isCompiling || EditorApplication.isUpdating || EditorApplication.isPlayingOrWillChangePlaymode)
            {
                return;
            }

            s_Busy = true;
            s_LastTime = EditorApplication.timeSinceStartup;
            try
            {
                string jsonRoot = JsonUIPrefabBuilder.ResolveDefaultJsonRoot();
                JsonUIPrefabBuilder.BuildChanged(jsonRoot, reason, force);
            }
            catch (Exception ex)
            {
                Debug.LogException(ex);
            }
            finally
            {
                s_Busy = false;
            }
        }
    }
}
#endif