Class: Money::Bank::CoinMarketCap

Inherits:
VariableExchange
  • Object
show all
Defined in:
lib/money/bank/coin_market_cap.rb

Constant Summary collapse

BASE_CURRENCY = 
"BTC".freeze
EXCHANGE_URL = 
"http://coinmarketcap.northpole.ro/api/v5/all.json".freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*args, &block) ⇒ CoinMarketCap

Returns a new instance of CoinMarketCap.



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# File 'lib/money/bank/coin_market_cap.rb', line 20

def initialize(*args, &block)
  super

  @currencies_list = []

  @ttl_in_seconds = 3600 # 1 hour
end

Instance Attribute Details

#currencies_list ⇒ Object (readonly)

List of currencies



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# File 'lib/money/bank/coin_market_cap.rb', line 15

def currencies_list
  @currencies_list
end

#rates_expire_at ⇒ Object (readonly)

Rates expiration time



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# File 'lib/money/bank/coin_market_cap.rb', line 18

def rates_expire_at
  @rates_expire_at
end

#ttl_in_seconds ⇒ Object

Seconds after which the current rates are automatically expired



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# File 'lib/money/bank/coin_market_cap.rb', line 12

def ttl_in_seconds
  @ttl_in_seconds
end

Instance Method Details

#get_rate(iso_from, iso_to, opts = {}) ⇒ Object 



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# File 'lib/money/bank/coin_market_cap.rb', line 40

def get_rate(iso_from, iso_to, opts = {})
  update_rates_if_expired

  super || get_indirect_rate(iso_from, iso_to, opts)
end

#original_get_rate ⇒ Object 



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# File 'lib/money/bank/coin_market_cap.rb', line 38

alias original_get_rate get_rate

#update_rates ⇒ Object 



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# File 'lib/money/bank/coin_market_cap.rb', line 28

def update_rates
  store.each_rate do |iso_from, iso_to, _rate|
    add_rate(iso_from, iso_to, nil)
  end

  @currencies_list = []

  add_exchange_rates
end