bitcoin_price

defmodule BitcoinPrice do
  use HTTPoison.Base
  @api_url "https://min-api.cryptocompare.com/data/price?fsym=BTC&tsyms=USD"

  @moduledoc """
  Documentation for Bitcoin Price functionality.
  """

  @doc """
   Retrieves the current bitcoin price in $USD at the time of the request

  ## Examples

        iex> BitcoinPrice.current
        #=> 7589.87

  """

  def current() do
    btc = HTTPoison.get!(@api_url)
    if btc.status_code == 200 do
      btc.body
      |> String.slice(7..13)
      |> String.to_float
    else
      "Error: Unable to retrieve bitcoin price from crypto compare."
    end
  end


end