Class: CurrencyRates::Parser

Inherits:
Object
  • Object
show all
Defined in:
lib/currency_rates.rb

Constant Summary collapse

XML_URL = 
"http://www.ecb.int/stats/eurofxref/eurofxref-daily.xml"

Instance Method Summary collapse

Constructor Details

#initialize(base_currency) ⇒ Parser

Returns a new instance of Parser.



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# File 'lib/currency_rates.rb', line 12

def initialize(base_currency)
  @base_currency = base_currency
end

Instance Method Details

#engage ⇒ Object 



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# File 'lib/currency_rates.rb', line 16

def engage
  doc = Nokogiri::XML(open(XML_URL))
  currency_collection = doc.css("Cube > Cube > Cube")
  
  # Just return if the base currency is EUR as that is
  # the format of the xml in the firstplace.
  return to_hash(currency_collection) if @base_currency == 'EUR'
  
  rate = get_rate(currency_collection, @base_currency)
  converted_rates = convert_rates(currency_collection, rate)
  
  return to_hash(converted_rates) << euro_rate(rate)
end