using System;
using System.Linq;
using System.Text.RegularExpressions;
namespace MCPForUnity.Editor.Helpers
{
/// <summary>
/// Utility class for converting between naming conventions (snake_case, camelCase).
/// Consolidates previously duplicated implementations from ToolParams, ManageVFX,
/// BatchExecute, CommandRegistry, and ToolDiscoveryService.
/// </summary>
public static class StringCaseUtility
{
/// <summary>
/// Checks whether a type belongs to the built-in MCP for Unity package.
/// Returns true when the type's namespace starts with
/// <paramref name="builtInNamespacePrefix"/> or its assembly is MCPForUnity.Editor.
/// </summary>
public static bool IsBuiltInMcpType(Type type, string assemblyName, string builtInNamespacePrefix)
{
if (type != null && !string.IsNullOrEmpty(type.Namespace)
&& type.Namespace.StartsWith(builtInNamespacePrefix, StringComparison.Ordinal))
{
return true;
}
if (!string.IsNullOrEmpty(assemblyName)
&& assemblyName.Equals("MCPForUnity.Editor", StringComparison.Ordinal))
{
return true;
}
return false;
}
/// <summary>
/// Converts a camelCase string to snake_case.
/// Example: "searchMethod" -> "search_method", "param1Value" -> "param1_value"
/// </summary>
/// <param name="str">The camelCase string to convert</param>
/// <returns>The snake_case equivalent, or original string if null/empty</returns>
public static string ToSnakeCase(string str)
{
if (string.IsNullOrEmpty(str))
return str;
return Regex.Replace(str, "([a-z0-9])([A-Z])", "$1_$2").ToLowerInvariant();
}
/// <summary>
/// Converts a snake_case string to camelCase.
/// Example: "search_method" -> "searchMethod"
/// </summary>
/// <param name="str">The snake_case string to convert</param>
/// <returns>The camelCase equivalent, or original string if null/empty or no underscores</returns>
public static string ToCamelCase(string str)
{
if (string.IsNullOrEmpty(str) || !str.Contains("_"))
return str;
var parts = str.Split('_');
if (parts.Length == 0)
return str;
// First part stays lowercase, rest get capitalized
var first = parts[0];
var rest = string.Concat(parts.Skip(1).Select(part =>
string.IsNullOrEmpty(part) ? "" : char.ToUpperInvariant(part[0]) + part.Substring(1)));
return first + rest;
}
}
}
