class Ubea::Exchange::BitcoinDeEur

Public Instance Methods

fiat_currency() click to toggle source
# File lib/ubea/exchanges/bitcoin_de_eur.rb, line 4
def fiat_currency
  "EUR"
end
refresh_order_book!() click to toggle source
# File lib/ubea/exchanges/bitcoin_de_eur.rb, line 12
def refresh_order_book!
  html = get_html("https://www.bitcoin.de/en/market") or return

  asks = format_asks_bids(html, "offer")
  bids = format_asks_bids(html, "order")

  return if asks.empty? || asks.size != bids.size

  mark_as_refreshed
  @order_book = OrderBook.new(asks: asks, bids: bids)
end
trade_fee() click to toggle source
# File lib/ubea/exchanges/bitcoin_de_eur.rb, line 8
def trade_fee
  BigDecimal.new("0.005").freeze # 0.5% - see https://www.bitcoin.de/en/infos#gebuehren
end

Private Instance Methods

format_asks_bids(html, type) click to toggle source
# File lib/ubea/exchanges/bitcoin_de_eur.rb, line 26
def format_asks_bids(html, type)
  return unless html.match(/<tbody id="trade_#{type}_results_table_body"(.+?)<\/tbody>/m)

  Regexp.last_match[1].each_line.select { |line| line.include?("data-critical-price") }.map do |line|
    return unless line.match(/<tr[^>]+data-critical-price="([\d\.]+)" data-amount="([\d\.]+)">/)

    Offer.new(price: Money.new(Regexp.last_match[1], fiat_currency), volume: Regexp.last_match[2]).freeze
  end
end