using System;
using System.ComponentModel;

namespace AnchorCli.Tools;

/// <summary>
/// Directory manipulation tools exposed to the LLM as AIFunctions.
/// </summary>
internal static class DirTools
{
    public static Action<string> Log { get; set; } = Console.WriteLine;

    [Description("Rename or move a directory. Can move a directory to a new location.")]
    public static string RenameDir(
        [Description("Current path to the directory.")] string sourcePath,
        [Description("New path for the directory.")] string destinationPath)
    {
        sourcePath = ResolvePath(sourcePath);
        destinationPath = ResolvePath(destinationPath);
        Log($"Renaming/moving directory: {sourcePath} -> {destinationPath}");

        if (!Directory.Exists(sourcePath))
            return $"ERROR: Directory not found: {sourcePath}";

        try
        {
            var destDir = Path.GetDirectoryName(destinationPath);
            if (!string.IsNullOrEmpty(destDir) && !Directory.Exists(destDir))
            {
                Directory.CreateDirectory(destDir);
            }

            Directory.Move(sourcePath, destinationPath);
            return $"OK: Directory moved from '{sourcePath}' to '{destinationPath}'";
        }
        catch (Exception ex)
        {
            return $"ERROR moving directory '{sourcePath}': {ex.Message}";
        }
    }

    [Description("Create a new directory. Creates parent directories if they don't exist. Returns OK on success, or an error message if the directory already exists or creation fails.")]
    public static string CreateDir(
        [Description("Path to the directory to create.")] string path)
    {
        path = ResolvePath(path);
        Log($"Creating directory: {path}");

        if (Directory.Exists(path))
            return $"ERROR: Directory already exists: {path}";

        try
        {
            Directory.CreateDirectory(path);
            return $"OK (created {path})";
        }
        catch (Exception ex)
        {
            return $"ERROR creating directory '{path}': {ex.Message}";
        }
    }

    internal static string ResolvePath(string path) =>
        Path.IsPathRooted(path) ? path : Path.GetFullPath(path, Environment.CurrentDirectory);
}