#if TOOLS

using Godot;

namespace Rokojori.Tools
{
  // scenePath is a list of child names from the scene root, e.g. ["Player","CharacterBody3D"].
  // SceneState has no parent/child API - nodes are a flat list, each with its own full relative
  // path string (root is "."), so matching is by path-string comparison / prefix.
  public static class ScenePathResolver
  {
    // SceneState.GetNodePath(idx, false) stringifies relative to the scene root as "./Name/Child",
    // i.e. with an explicit "." leading segment - not a bare "Name/Child" as a naive join would produce.
    public static string ToRelativePath( string[] scenePath )
    {
      if ( scenePath == null || scenePath.Length == 0 )
      {
        return ".";
      }

      return "./" + string.Join( "/", scenePath );
    }

    public static int FindNodeIndex( SceneState state, string relativePath )
    {
      var count = state.GetNodeCount();

      for ( var i = 0; i < count; i++ )
      {
        if ( state.GetNodePath( i, false ).ToString() == relativePath )
        {
          return i;
        }
      }

      return -1;
    }

    // 0 = same node, 1 = direct child, 2 = grandchild, etc. -1 = not a descendant.
    public static int DepthOf( string rootRelativePath, string candidateRelativePath )
    {
      if ( rootRelativePath == candidateRelativePath )
      {
        return 0;
      }

      var prefix = rootRelativePath == "." ? "./" : rootRelativePath + "/";

      if ( ! candidateRelativePath.StartsWith( prefix ) )
      {
        return -1;
      }

      var remainder = candidateRelativePath.Substring( prefix.Length );
      return remainder.Split( '/' ).Length;
    }

    public static Node FindNode( Node root, string[] scenePath )
    {
      if ( scenePath == null || scenePath.Length == 0 )
      {
        return root;
      }

      return root.GetNodeOrNull( new NodePath( string.Join( "/", scenePath ) ) );
    }

    public static string[] ToStringArray( Rokojori.JSONArray array )
    {
      if ( array == null )
      {
        return new string[ 0 ];
      }

      var result = new string[ array.size ];

      for ( var i = 0; i < array.size; i++ )
      {
        result[ i ] = array.Get( i ).stringValue;
      }

      return result;
    }
  }
}

#endif