defmodule AI.Tools.Tasks.ShowList do
  @moduledoc """
  Tool to return a task list as a formatted, detailed string.
  """

  @behaviour AI.Tools

  @impl AI.Tools
  def async?, do: false

  @impl AI.Tools
  def is_available?, do: true

  @impl AI.Tools
  def read_args(args) when is_map(args) do
    with {:ok, list_id} <- AI.Tools.get_arg(args, "list_id"),
         true <- is_integer(list_id) or {:error, :invalid_argument, "list_id must be an integer"} do
      {:ok, %{"list_id" => list_id}}
    end
  end

  @impl AI.Tools
  def ui_note_on_request(_args), do: nil

  @impl AI.Tools
  def ui_note_on_result(_args, _result), do: nil

  @impl AI.Tools
  def tool_call_failure_message(_args, _reason), do: :default

  @impl AI.Tools
  def spec do
    %{
      type: "function",
      function: %{
        name: "tasks_show_list",
        description: "Return the task list as a formatted string (detailed)",
        parameters: %{
          type: "object",
          additionalProperties: false,
          required: ["list_id"],
          properties: %{
            "list_id" => %{
              type: :integer,
              description: "The ID of the task list."
            }
          }
        }
      }
    }
  end

  @impl AI.Tools
  def call(%{"list_id" => list_id}) do
    # produce a detailed listing of the tasks
    output = Services.Task.as_string(list_id, true)
    {:ok, output}
  end
end