defmodule MihainatorWeb.UploadLive do
  use MihainatorWeb, :live_view

  @impl Phoenix.LiveView
  def mount(_params, _session, socket) do
    {:ok,
     socket
     |> assign(:uploaded_files, [])
     |> assign(:submit_disabled?, true)
     |> allow_upload(:history, accept: ~w(.csv))}
  end

  @impl Phoenix.LiveView
  def handle_event("validate", _params, socket) do
    {:noreply,
     socket
     |> assign(:submit_disabled?, false)}
  end

  @impl Phoenix.LiveView
  def handle_event("save", _params, socket) do
    uploaded_files =
      consume_uploaded_entries(socket, :history, fn %{path: path}, _entry ->
        line_count =
          File.stream!(path)
          |> Enum.count()

        IO.puts(line_count)

        {:ok, line_count}
      end)

    {:noreply, update(socket, :uploaded_files, &(&1 ++ uploaded_files))}
  end

  defp error_to_string(:too_large), do: "Too large"
  defp error_to_string(:not_accepted), do: "You have selected an unacceptable file type"
end