using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using MCPForUnity.Editor.Models;
namespace MCPForUnity.Editor.Helpers
{
public static class ConfigJsonBuilder
{
public static string BuildManualConfigJson(string uvPath, string pythonDir, McpClient client)
{
var root = new JObject();
bool isVSCode = client?.mcpType == McpTypes.VSCode;
JObject container;
if (isVSCode)
{
container = EnsureObject(root, "servers");
}
else
{
container = EnsureObject(root, "mcpServers");
}
var unity = new JObject();
PopulateUnityNode(unity, uvPath, pythonDir, client, isVSCode);
container["unityMCP"] = unity;
return root.ToString(Formatting.Indented);
}
public static JObject ApplyUnityServerToExistingConfig(JObject root, string uvPath, string serverSrc, McpClient client)
{
if (root == null) root = new JObject();
bool isVSCode = client?.mcpType == McpTypes.VSCode;
JObject container = isVSCode ? EnsureObject(root, "servers") : EnsureObject(root, "mcpServers");
JObject unity = container["unityMCP"] as JObject ?? new JObject();
PopulateUnityNode(unity, uvPath, serverSrc, client, isVSCode);
container["unityMCP"] = unity;
return root;
}
/// <summary>
/// Centralized builder that applies all caveats consistently.
/// - Sets command/args with provided directory
/// - Ensures env exists
/// - Adds type:"stdio" for VSCode
/// - Adds disabled:false for Windsurf/Kiro only when missing
/// </summary>
private static void PopulateUnityNode(JObject unity, string uvPath, string directory, McpClient client, bool isVSCode)
{
unity["command"] = uvPath;
// For Cursor (non-VSCode) on macOS, prefer a no-spaces symlink path to avoid arg parsing issues in some runners
string effectiveDir = directory;
#if UNITY_EDITOR_OSX || UNITY_STANDALONE_OSX
bool isCursor = !isVSCode && (client == null || client.mcpType != McpTypes.VSCode);
if (isCursor && !string.IsNullOrEmpty(directory))
{
// Replace canonical path segment with the symlink path if present
const string canonical = "/Library/Application Support/";
const string symlinkSeg = "/Library/AppSupport/";
try
{
// Normalize to full path style
if (directory.Contains(canonical))
{
var candidate = directory.Replace(canonical, symlinkSeg).Replace('\\', '/');
if (System.IO.Directory.Exists(candidate))
{
effectiveDir = candidate;
}
}
else
{
// If installer returned XDG-style on macOS, map to canonical symlink
string norm = directory.Replace('\\', '/');
int idx = norm.IndexOf("/.local/share/UnityMCP/", System.StringComparison.Ordinal);
if (idx >= 0)
{
string home = System.Environment.GetFolderPath(System.Environment.SpecialFolder.Personal) ?? string.Empty;
string suffix = norm.Substring(idx + "/.local/share/".Length); // UnityMCP/...
string candidate = System.IO.Path.Combine(home, "Library", "AppSupport", suffix).Replace('\\', '/');
if (System.IO.Directory.Exists(candidate))
{
effectiveDir = candidate;
}
}
}
}
catch { /* fallback to original directory on any error */ }
}
#endif
unity["args"] = JArray.FromObject(new[] { "run", "--directory", effectiveDir, "server.py" });
if (isVSCode)
{
unity["type"] = "stdio";
}
else
{
// Remove type if it somehow exists from previous clients
if (unity["type"] != null) unity.Remove("type");
}
if (client != null && (client.mcpType == McpTypes.Windsurf || client.mcpType == McpTypes.Kiro))
{
if (unity["env"] == null)
{
unity["env"] = new JObject();
}
if (unity["disabled"] == null)
{
unity["disabled"] = false;
}
}
}
private static JObject EnsureObject(JObject parent, string name)
{
if (parent[name] is JObject o) return o;
var created = new JObject();
parent[name] = created;
return created;
}
}
}
