Class: CryptoTicker::BTCe

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

Overview

BTC-e tickers for various crypto-currencies and retrieval methods

Constant Summary collapse

@@valid_pairs = 
%w[ BTC/USD BTC/RUR BTC/EUR LTC/BTC LTC/USD LTC/RUR NMC/BTC
USD/RUR EUR/USD NVC/BTC TRC/BTC PPC/BTC RUC/BTC ]
@@ret_types = 
{
    'date'           => :integer,
    'price'          => :bigdecimal,
    'amount'         => :bigdecimal,
    'tid'            => :integer,
    'item'           => :string,
    'trade_type'     => :string,
    'price_currency' => :string,
    'high'           => :bigdecimal,
    'low'            => :bigdecimal,
    'sell'           => :bigdecimal,
    'buy'            => :bigdecimal,
    'last'           => :bigdecimal,
    'vol_cur'        => :bigdecimal,
    'vol'            => :bigdecimal,
    'avg'            => :bigdecimal,
    'server_time'    => :integer,
}
@@ret_fcns = 
{
    :integer    => 'to_i',
    :bigdecimal => 'to_d',
    :string     => 'to_s',
}

Class Method Summary collapse

Class Method Details

.depth(base, quote = '') ⇒ Object 



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# File 'lib/crypto_ticker.rb', line 138

def depth(base, quote='')
  pair = CryptoTicker::makepair(base, quote)
  if @@valid_pairs.include?( pair )
    "https://btc-e.com/api/2/#{pair.to_sym}/depth"
  end
end

.info(json) ⇒ Object 



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# File 'lib/crypto_ticker.rb', line 155

def info(json)
  hash = JSON.parse(json)
  info = {}
  # TODO: recursively process Arrays, Hashes, Strings, Fixnums...
  if hash.has_key?('ticker')
    hash['ticker'].keys.each do |key|
      val  = hash['ticker'][key]
      info[key.to_sym] = val.send(@@ret_fcns[@@ret_types[key]])
    end
  end
  info
end

.last(json) ⇒ Object

Accepts JSON retrieved from the appropriate BTC-e ticker URL, returns last trade amount (denominated in counter currency) as a float. eg: BTC/USD ticker will return amount in USD

NMC/BTC ticker will return amount in BTC



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# File 'lib/crypto_ticker.rb', line 149

def last(json)
  hash = JSON.parse(json)
  hash['ticker']['last'].to_d
end

.ticker(base, quote = '') ⇒ Object 



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# File 'lib/crypto_ticker.rb', line 124

def ticker(base, quote='')
  pair = CryptoTicker::makepair(base, quote)
  if @@valid_pairs.include?( pair )
    "https://btc-e.com/api/2/#{pair.to_sym}/ticker"
  end
end

.trades(base, quote = '') ⇒ Object 



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# File 'lib/crypto_ticker.rb', line 131

def trades(base, quote='')
  pair = CryptoTicker::makepair(base, quote)
  if @@valid_pairs.include?( pair )
    "https://btc-e.com/api/2/#{pair.to_sym}/trades"
  end
end