defmodule Snapshot do
  @moduledoc ~S'''
  Funzioni varie di test
  '''
  NimbleCSV.define(MyParser, separator: ";")

  def mydir do
    "/winshare/Dati-lx/agol_csv/"
  end

  def leggi_stream(nome_file) do
    nome_file
    # READ_AHEAD)
    |> File.stream!(read_ahead: 1_000_000)
    |> MyParser.parse_stream()

    # |> Stream.map(fn [cod_staz, cod_grand, data_mis, valore, cod_valid, liv_validaz] ->
    #   %{
    #     cod_staz: :binary.copy(cod_staz),
    #     cod_grand: :binary.copy(cod_grand),
    #     data_mis: :binary.copy(data_mis),
    #     valore: String.to_float(valore),
    #     cod_valid: :binary.copy(cod_valid),
    #     liv_validaz: :binary.copy(liv_validaz)
    #   }
    # end)
  end

  def files do
    files("*.csv")
  end

  def files(estensione) do
    Path.wildcard(Path.join(mydir(), estensione))
  end

  def elabora(stream, quanti \\ 200_000) do
    stream
    |> Stream.chunk_every(quanti)
    |> Enum.each(fn lista ->
      send(self(), %{count: Enum.count(lista)})
    end)
  end

  def l0 do
    files() |> Enum.reverse() |> hd
  end

  def ftok do
    _x = "where=&objectIds=1&time="
    {:ok, c} = File.read('./secret_esri_token.txt')
    URI.decode_query(c)
  end

  def get_token do
    Map.get(ftok(), "token")
  end
end