/*
┌──────────────────────────────────────────────────────────────────┐
│ Author: Ivan Murzak (https://github.com/IvanMurzak) │
│ Repository: GitHub (https://github.com/IvanMurzak/Unity-MCP) │
│ Copyright (c) 2025 Ivan Murzak │
│ Licensed under the Apache License, Version 2.0. │
│ See the LICENSE file in the project root for more information. │
└──────────────────────────────────────────────────────────────────┘
*/
#nullable enable
using System;
using System.IO;
using System.Text.Json;
using UnityEngine;
namespace com.IvanMurzak.Unity.MCP
{
public partial class McpPluginUnity
{
public static string ResourcesFileName => "Unity-MCP-ConnectionConfig";
public static string AssetsFilePath => $"Assets/Resources/{ResourcesFileName}.json";
#if UNITY_EDITOR
public static TextAsset AssetFile => UnityEditor.AssetDatabase.LoadAssetAtPath<TextAsset>(AssetsFilePath);
public static void InvalidateAssetFile() => UnityEditor.AssetDatabase.ImportAsset(AssetsFilePath, UnityEditor.ImportAssetOptions.ForceUpdate);
#endif
static McpPluginUnity GetOrCreateInstance() => GetOrCreateInstance(out _);
static McpPluginUnity GetOrCreateInstance(out bool wasCreated)
{
wasCreated = false;
try
{
#if UNITY_EDITOR
var json = Application.isPlaying
? Resources.Load<TextAsset>(ResourcesFileName).text
: File.Exists(AssetsFilePath)
? File.ReadAllText(AssetsFilePath)
: null;
#else
var json = Resources.Load<TextAsset>(ResourcesFileName).text;
#endif
Data? config = null;
try
{
config = string.IsNullOrWhiteSpace(json)
? null
: JsonSerializer.Deserialize<Data>(json);
}
catch (Exception e)
{
Debug.LogException(e);
Debug.LogError($"[McpPluginUnity] <color=red><b>{ResourcesFileName}</b> file is corrupted at <i>{AssetsFilePath}</i></color>");
}
if (config == null)
{
Debug.Log($"[McpPluginUnity] <color=orange><b>Creating {ResourcesFileName}</b> file at <i>{AssetsFilePath}</i></color>");
config = new Data();
wasCreated = true;
}
return new McpPluginUnity() { data = config };
}
catch (Exception e)
{
Debug.LogException(e);
Debug.LogError($"[McpPluginUnity] <color=red><b>{ResourcesFileName}</b> file can't be loaded from <i>{AssetsFilePath}</i></color>");
}
throw new InvalidOperationException($"Failed to get or create {nameof(McpPluginUnity)} instance. Check logs for details.");
}
public static void Save()
{
#if UNITY_EDITOR
Validate();
try
{
var directory = Path.GetDirectoryName(AssetsFilePath);
if (!Directory.Exists(directory))
Directory.CreateDirectory(directory);
var data = Instance.data ??= new Data();
var json = JsonSerializer.Serialize(data, new JsonSerializerOptions { WriteIndented = true });
File.WriteAllText(AssetsFilePath, json);
var assetFile = AssetFile;
if (assetFile != null)
UnityEditor.EditorUtility.SetDirty(assetFile);
else
UnityEditor.AssetDatabase.Refresh(UnityEditor.ImportAssetOptions.ForceSynchronousImport);
}
catch (Exception e)
{
Debug.LogError($"[McpPluginUnity] <color=red><b>{ResourcesFileName}</b> file can't be saved at <i>{AssetsFilePath}</i></color>");
Debug.LogException(e);
}
#else
return;
#endif
}
}
}
