ex_claw

defmodule ExClaw.Tool.Write do
  @moduledoc "Write content to a file, auto-creating parent directories. PathGuard enforced."

  alias ExClaw.Security

  def new do
    ADK.Tool.FunctionTool.new(:write,
      description: "Write content to a file. Creates parent directories if needed.",
      func: {__MODULE__, :call},
      parameters: %{
        type: "object",
        properties: %{
          path: %{type: "string", description: "File path to write"},
          content: %{type: "string", description: "Content to write"}
        },
        required: ["path", "content"]
      }
    )
  end

  def call(_ctx, args) do
    path = Map.fetch!(args, "path")
    content = Map.fetch!(args, "content")
    sec_config = load_security_config()

    if Security.check_path(path, sec_config) do
      path |> Path.dirname() |> File.mkdir_p!()

      case File.write(path, content) do
        :ok -> {:ok, "Wrote #{byte_size(content)} bytes to #{path}"}
        {:error, reason} -> {:error, "Failed to write #{path}: #{reason}"}
      end
    else
      {:error, "path not allowed: #{path}"}
    end
  end

  defp load_security_config do
    try do
      config = ExClaw.Config.get([:security]) || %{}
      if is_map(config), do: config, else: %{}
    rescue
      _ -> %{}
    catch
      :exit, _ -> %{}
    end
  end
end