Class: ExchangeRateJt::ExchangeRates

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

Instance Method Summary collapse

Constructor Details

#initialize(configuration) ⇒ ExchangeRates

Returns a new instance of ExchangeRates.



12
13
14
 
# File 'lib/exchange_rate_jt/exchange_rates.rb', line 12

def initialize(configuration)
  @configuration = configuration
end

Instance Method Details

#at(date, base, counter) ⇒ Object 



24
25
26
27
28
29
30
31
32
33
34
 
# File 'lib/exchange_rate_jt/exchange_rates.rb', line 24

def at(date, base, counter)
  validate_date(date)
  date = date.strftime('%b_%d_%Y').to_sym.downcase

  base = fetch_rate(date, base)
  counter = fetch_rate(date, counter)

  rate = (counter.to_f / base.to_f) * 10

  { status: :success, rate: BigDecimal.new(rate, 5) }
end

#update ⇒ Object 



16
17
18
19
20
21
22
 
# File 'lib/exchange_rate_jt/exchange_rates.rb', line 16

def update
  rates = RatesSourceFactory.build(configuration.source).fetch_rates
  rates.each { |date, values| data_store.persist(date, values) }
  true
rescue => exception
  raise UpdateError, exception.message
end