using System;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;
namespace MCPForUnity.Editor.Data
{
/// <summary>
/// Registry of Python tool files to sync to the MCP server.
/// Add your Python files here - they can be stored anywhere in your project.
/// </summary>
[CreateAssetMenu(fileName = "PythonTools", menuName = "MCP For Unity/Python Tools")]
public class PythonToolsAsset : ScriptableObject
{
[Tooltip("Add Python files (.py) to sync to the MCP server. Files can be located anywhere in your project.")]
public List<TextAsset> pythonFiles = new List<TextAsset>();
[Header("Sync Options")]
[Tooltip("Use content hashing to detect changes (recommended). If false, always copies on startup.")]
public bool useContentHashing = true;
[Header("Sync State (Read-only)")]
[Tooltip("Internal tracking - do not modify")]
public List<PythonFileState> fileStates = new List<PythonFileState>();
/// <summary>
/// Gets all valid Python files (filters out null/missing references)
/// </summary>
public IEnumerable<TextAsset> GetValidFiles()
{
return pythonFiles.Where(f => f != null);
}
/// <summary>
/// Checks if a file needs syncing
/// </summary>
public bool NeedsSync(TextAsset file, string currentHash)
{
if (!useContentHashing) return true; // Always sync if hashing disabled
var state = fileStates.FirstOrDefault(s => s.assetGuid == GetAssetGuid(file));
return state == null || state.contentHash != currentHash;
}
/// <summary>
/// Records that a file was synced
/// </summary>
public void RecordSync(TextAsset file, string hash)
{
string guid = GetAssetGuid(file);
var state = fileStates.FirstOrDefault(s => s.assetGuid == guid);
if (state == null)
{
state = new PythonFileState { assetGuid = guid };
fileStates.Add(state);
}
state.contentHash = hash;
state.lastSyncTime = DateTime.UtcNow;
state.fileName = file.name;
}
/// <summary>
/// Removes state entries for files no longer in the list
/// </summary>
public void CleanupStaleStates()
{
var validGuids = new HashSet<string>(GetValidFiles().Select(GetAssetGuid));
fileStates.RemoveAll(s => !validGuids.Contains(s.assetGuid));
}
private string GetAssetGuid(TextAsset asset)
{
return UnityEditor.AssetDatabase.AssetPathToGUID(UnityEditor.AssetDatabase.GetAssetPath(asset));
}
/// <summary>
/// Called when the asset is modified in the Inspector
/// Triggers sync to handle file additions/removals
/// </summary>
private void OnValidate()
{
// Cleanup stale states immediately
CleanupStaleStates();
// Trigger sync after a delay to handle file removals
// Delay ensures the asset is saved before sync runs
UnityEditor.EditorApplication.delayCall += () =>
{
if (this != null) // Check if asset still exists
{
MCPForUnity.Editor.Helpers.PythonToolSyncProcessor.SyncAllTools();
}
};
}
}
[Serializable]
public class PythonFileState
{
public string assetGuid;
public string fileName;
public string contentHash;
public DateTime lastSyncTime;
}
}
