Class: CurrencyExchanger

Inherits:
Object show all
Defined in:
lib/mrpin/core/currency_exchanger/currency_exchanger.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ CurrencyExchanger

Returns a new instance of CurrencyExchanger.



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# File 'lib/mrpin/core/currency_exchanger/currency_exchanger.rb', line 3

def initialize
  @exchangers = []

  @exchanger_local = ExchangerLocal.new

  @exchangers << ExchangerYahoo0.new
  @exchangers << ExchangerYahoo1.new
  @exchangers << ExchangerFixer.new

end

Instance Method Details

#get_rate(from_currency, to_currency) ⇒ Object 



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# File 'lib/mrpin/core/currency_exchanger/currency_exchanger.rb', line 15

def get_rate(from_currency, to_currency)
  from_currency = from_currency.upcase
  to_currency   = to_currency.upcase

  result = nil

  if from_currency == to_currency
    result = 1.0
  else

    result = @exchanger_local.get_rate(from_currency, to_currency)

    if result.nil?
      result = get_rate_and_cache(from_currency, to_currency)
    end
  end

  if result.nil? || result == 0
    AppInfoBase.instance.on_server_error("can't fetch rate from servers. currency #{from_currency}_#{to_currency}")
    result = 0.0
  end

  result
end