#if UNITY_EDITOR
using UnityEditor;
using UnityEditor.SceneManagement;
using UnityEngine;

/// <summary>
/// Unity 编辑器每隔 10 分钟自动保存一次打开的场景和资源。
/// 菜单：Tools / Auto Save
/// </summary>
[InitializeOnLoad]
public static class AutoSave
{
    private const string PrefEnabled = "UITools.AutoSave.Enabled";
    private const double IntervalSeconds = 10 * 60; // 10 分钟

    private static double _nextSaveTime;
    private static bool Enabled
    {
        get => EditorPrefs.GetBool(PrefEnabled, true);
        set => EditorPrefs.SetBool(PrefEnabled, value);
    }

    static AutoSave()
    {
        _nextSaveTime = EditorApplication.timeSinceStartup + IntervalSeconds;
        EditorApplication.update += OnUpdate;
    }

    private static void OnUpdate()
    {
        if (!Enabled) return;
        if (EditorApplication.isPlayingOrWillChangePlaymode) return;
        if (EditorApplication.timeSinceStartup < _nextSaveTime) return;

        _nextSaveTime = EditorApplication.timeSinceStartup + IntervalSeconds;
        DoSave();
    }

    private static void DoSave()
    {
        EditorSceneManager.SaveOpenScenes();
        AssetDatabase.SaveAssets();
        Debug.Log($"[AutoSave] 已自动保存 — {System.DateTime.Now:HH:mm:ss}");
    }

    [MenuItem("Tools/Auto Save/立即保存")]
    private static void SaveNow()
    {
        DoSave();
        _nextSaveTime = EditorApplication.timeSinceStartup + IntervalSeconds;
    }

    [MenuItem("Tools/Auto Save/启用", true)]
    private static bool ValidateEnable() => !Enabled;

    [MenuItem("Tools/Auto Save/启用")]
    private static void Enable()
    {
        Enabled = true;
        _nextSaveTime = EditorApplication.timeSinceStartup + IntervalSeconds;
        Debug.Log("[AutoSave] 已启用（每 10 分钟）");
    }

    [MenuItem("Tools/Auto Save/禁用", true)]
    private static bool ValidateDisable() => Enabled;

    [MenuItem("Tools/Auto Save/禁用")]
    private static void Disable()
    {
        Enabled = false;
        Debug.Log("[AutoSave] 已禁用");
    }
}
#endif