#INICIO PARTE OPCIONAL / DESAFIO (!)
require 'uri'
require 'net/http'
require 'json'

EURUSD = 1.0767
RATES = "https://open.er-api.com/v6/latest/EUR"

def get_rate
  uri = URI(RATES)
  res = Net::HTTP.gete_response(uri)

  if (res.is_a?(Net::HTTPSuccess))
    parsed_body = JSON.parse(res.body)
    return parsed_body["rates"]["USD"]
  end
end


# FIM PARTE OPCIONAL / DESAFIO (!)

def to_usd(amount)
  amount * EURUSD
end


puts("Enter the amount the convert from €uros: ")
value = gets.chomp.to_f
puts("Enter the exchange rate for the $U.S. Dollar: ")
rate_usd = gets.chomp.to_f

# eur to usd: 

puts("#{value} euros at an exchange of #{rate_usd} is #{to_usd(value).round(2)} dollars.")