Class: Trader::BitstampBackend

Inherits:
BaseBackend show all
Defined in:
lib/trade-o-matic/adapters/bitstamp_backend.rb

Defined Under Namespace

Classes: BackendBalance, BitstampOrder

Constant Summary collapse

BASE_CUR = 
Currency.for_code(:BTC)
QUOTE_CUR = 
Currency.for_code(:USD)
MAIN_MARKET = 
CurrencyPair.new BASE_CUR, QUOTE_CUR
TYPE_MAP = 
{
  0 => Order::BID,
  1 => Order::ASK
}

Instance Attribute Summary

Attributes inherited from BaseBackend

#name

Instance Method Summary collapse

Methods inherited from BaseBackend

#cancel_order, #generate_endpoint, #get_session, #listen_transactions, #not_supported, #withdraw_to_endpoint

Constructor Details

#initialize ⇒ BitstampBackend

Returns a new instance of BitstampBackend.



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# File 'lib/trade-o-matic/adapters/bitstamp_backend.rb', line 43

def initialize
  super :bitstamp
end

Instance Method Details

#create_order(_session, _pair, _volume, _price, _type) ⇒ Object 



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# File 'lib/trade-o-matic/adapters/bitstamp_backend.rb', line 81

def create_order(_session, _pair, _volume, _price, _type)
  not_supported('market orders') if _price.nil?

  normalize_raw_order execute_request(
    _session || session,
    _type == Order::BID ? 'buy' : 'sell',
    { amount: _volume.to_f, price: _price.to_f }
  )
end

#fetch_order(_session, _id) ⇒ Object 



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# File 'lib/trade-o-matic/adapters/bitstamp_backend.rb', line 91

def fetch_order(_session, _id)
  normalize_raw_order_status _id, execute_request(
    _session || session,
    'order_status',
    { id: _id['id'] }
  )
end

#fill_book(_book) ⇒ Object 



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# File 'lib/trade-o-matic/adapters/bitstamp_backend.rb', line 51

def fill_book(_book)
  # TODO: consider book pair

  _book.prepare Time.now

  ob = execute_request(nil, 'order_book')
  ob['bids'].each { |o| _book.add_bid(o[0], o[1]) }
  ob['asks'].each { |o| _book.add_ask(o[0], o[1]) }

  tx = execute_request(nil, 'transactions')
  tx.each do |t|
    _book.add_transaction t['price'], t['amount'], Time.at(t['date'].to_i)
  end
end

#get_available_markets ⇒ Object 



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# File 'lib/trade-o-matic/adapters/bitstamp_backend.rb', line 47

def get_available_markets
  [MAIN_MARKET]
end

#get_balance(_session, _currency) ⇒ Object 



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# File 'lib/trade-o-matic/adapters/bitstamp_backend.rb', line 66

def get_balance(_session, _currency)
  raw = execute_request(_session || session, 'balance')

  if _currency == BASE_CUR
    return BackendBalance.new raw['btc_balance'], raw['btc_available']
  else
    return BackendBalance.new raw['usd_balance'], raw['usd_available']
  end
end

#get_orders(_session, _pair) ⇒ Object 



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# File 'lib/trade-o-matic/adapters/bitstamp_backend.rb', line 76

def get_orders(_session, _pair)
  raw_orders = execute_request(_session || session, 'open_orders')
  raw_orders.map { |o| normalize_raw_order o }
end