Class: Ubea::Exchange::KrakenBase

Inherits:
Base
  • Object
show all
Defined in:
lib/ubea/exchanges/kraken_base.rb

Direct Known Subclasses

KrakenEur, KrakenUsd

Constant Summary collapse

BadResponseError = 
Class.new(Exception)
RateError = 
Class.new(Exception)

Instance Attribute Summary

Attributes inherited from Base

#last_rtt, #order_book, #updated_at

Instance Method Summary collapse

Methods inherited from Base

#id, #short_name

Instance Method Details

#balance ⇒ Object 



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# File 'lib/ubea/exchanges/kraken_base.rb', line 38

def balance
  balance = post_private("Balance")

  OpenStruct.new(
    fiat: Money.new(balance["Z#{fiat_currency}"], fiat_currency),
    xbt: BigDecimal.new(balance["XXBT"]),
  ).freeze
end

#exchange_settings ⇒ Object

Raises:

  • (NotImplementedError) 


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# File 'lib/ubea/exchanges/kraken_base.rb', line 20

def exchange_settings
  raise NotImplementedError
end

#fiat_currency ⇒ Object

Raises:

  • (NotImplementedError) 


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# File 'lib/ubea/exchanges/kraken_base.rb', line 16

def fiat_currency
  raise NotImplementedError
end

#name ⇒ Object 



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# File 'lib/ubea/exchanges/kraken_base.rb', line 12

def name
  "Kraken (#{fiat_currency})"
end

#open_orders ⇒ Object 



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# File 'lib/ubea/exchanges/kraken_base.rb', line 81

def open_orders
  post_private("OpenOrders")["open"]
end

#open_orders? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ubea/exchanges/kraken_base.rb', line 85

def open_orders?
  !open_orders.empty?
end

#refresh_order_book! ⇒ Object 



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# File 'lib/ubea/exchanges/kraken_base.rb', line 28

def refresh_order_book!
  json = get_json("https://api.kraken.com/0/public/Depth?pair=XBT#{fiat_currency}") or return

  asks = format_asks_bids(json["result"]["XXBTZ#{fiat_currency}"]["asks"])
  bids = format_asks_bids(json["result"]["XXBTZ#{fiat_currency}"]["bids"])

  mark_as_refreshed
  @order_book = OrderBook.new(asks: asks, bids: bids)
end

#trade!(args, simulate: false) ⇒ Object 



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# File 'lib/ubea/exchanges/kraken_base.rb', line 47

def trade!(args, simulate: false)
  params = {
    pair: "XXBTZ#{fiat_currency}",
    type: args.fetch(:type),
    volume: args.fetch(:volume),
  }

  ordertype = args.fetch(:ordertype, "limit")

  case ordertype
  when "market"
    params.merge!(
      ordertype: "market",
    )
  when "limit"
    params.merge!(
      price: args.fetch(:price),
      ordertype: "limit",
    )
  else
    raise "Unknown ordertype"
  end

  if simulate
    params.merge!(
      validate: true
    )
  end

  Log.debug params
  trade = post_private("AddOrder", params)
  Log.info trade
end

#trade_fee ⇒ Object 



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# File 'lib/ubea/exchanges/kraken_base.rb', line 24

def trade_fee
  BigDecimal.new("0.0035").freeze # 0.35%
end