module RubyBtce

# File lib/RubyBtce.rb, line 100
      def self.account
      request = RubyBtce.api("getInfo", opts={})
      if request['success'] == 1
      return response = Hashie::Mash.new(request['return'])
  else
      return request['error']
  end
end

# File lib/RubyBtce.rb, line 96
def self.all_currencies
      currencies = 'btc_usd-btc_rur-btc_eur-btc_cnh-btc_gbp-ltc_btc-ltc_usd-ltc_rur-ltc_eur-ltc_cnh-ltc_gbp-nmc_btc-nmc_usd-nvc_btc-nvc_usd-usd_rur-eur_usd-eur_rur-usd_cnh-gbp_usd-trc_btc-ppc_btc-ppc_usd-ftc_btc-xpm_btc'
end

# File lib/RubyBtce.rb, line 54
def self.api(method, opts)
  path = File.join(File.dirname(__FILE__), '..', 'config', 'btce_api.yml')
  if File.exists?(path)
    config = YAML.load_file(path)
  else
    config = YAML.load_file(File.join(Rails.root, "config", "btce_api.yml"))
  end

  key = config['key']
  secret = config['secret']

  params = {"method" => method, "nonce" => nonce}
  
  unless opts.empty?
    if method == "Trade"
      opts = cleanup_trade_params(opts)
    end
      opts.each do |key, val|
      params[key.to_s] = val
    end
  end
  
  payload = params.collect do |key, val|
    "#{key}=#{CGI::escape(val.to_s)}"
  end.join('&')

  signature = OpenSSL::HMAC.hexdigest('sha512', secret, payload)
 
  Net::HTTP.start('btc-e.com', 443, :use_ssl => true) do |http|
    headers = {'Sign' => signature, 'Key' => key}
    response = http.post('/tapi', payload, headers).body
    return JSON.parse(response)
  end
end

# File lib/RubyBtce.rb, line 118
def self.cancel(opts={})
  request = RubyBtce.api("CancelOrder", opts)
  if request['success'] == 1
    return response = Hashie::Mash.new(request['return'])
  else
    return request['error']
  end
end

# File lib/RubyBtce.rb, line 19
def self.cleanup_trade_params(opts)
  price = opts["rate"]
  amount = opts["amount"]

  pairs = {  
    "btc_usd" => 3,
    "btc_eur" => 3,
    "btc_rur" => 4,
    "eur_usd" => 4,
    "eur_rur" => 4,
    "ftc_btc" => 4,
    "nvc_btc" => 4,
    "nvc_usd" => 4,
    "ppc_btc" => 4,
    "usd_rur" => 4,
    "ppc_usd" => 4,
    "ltc_rur" => 4,
    "nmc_btc" => 4,
    "ltc_btc" => 5,
    "ltc_eur" => 6,
    "ltc_usd" => 6,
    "nmc_usd" => 6,
    "trc_btc" => 6,
    "xpm_btc" => 6
  }

  pairs.each do |key, val|
    if opts["pair"] == key
      opts["rate"] = round_off(price, val)
      opts["amount"] = round_off(amount, 8)
    end
  end
  return opts
end

# File lib/RubyBtce.rb, line 168
def self.depth(limit)
      request = JSON.parse(open("https://btc-e.com/api/3/depth/#{self.all_currencies}?limit=#{limit}").read)
      return response = Hashie::Mash.new(request)
end

# File lib/RubyBtce.rb, line 109
def self.new_trade(opts={})
  request = RubyBtce.api("Trade", opts)
  if request['success'] == 1
    return response = Hashie::Mash.new(request['return'])
  else
    return request['error']
  end
end

# File lib/RubyBtce.rb, line 89
def self.nonce
  while result = Time.now.to_i and @nonce and @nonce >= result
    sleep 1
  end
  return @nonce = result
end

# File lib/RubyBtce.rb, line 173
def self.order_book(limit)
      request = JSON.parse(open("https://btc-e.com/api/3/trades/#{self.all_currencies}?limit=#{limit}").read)
      return response = Hashie::Mash.new(request)
end

# File lib/RubyBtce.rb, line 127
def self.orders(opts={})
  request = RubyBtce.api("ActiveOrders", opts)
  if request['success'] == 1
    return response = Hashie::Mash.new(request['return'])
  else
    return request['error']
  end
end

# File lib/RubyBtce.rb, line 163
def self.pair_info
      request = JSON.parse(open("https://btc-e.com/api/3/info").read)
      return response = Hashie::Mash.new(request['pairs'])
end

# File lib/RubyBtce.rb, line 9
    def self.return_error
puts "BTC-e error: you may have sent invalid parameters/credentials, or made requests to frequently."
return false
    end

# File lib/RubyBtce.rb, line 14
def self.round_off(value, places)
  result = (value.to_f * (10 ** places)).floor / (10.0 ** places)
  return result
end

# File lib/RubyBtce.rb, line 154
def self.ticker
      request = JSON.parse(open("https://btc-e.com/api/3/ticker/#{self.all_currencies}").read)
      if request['success'] == 0
      self.return_error
  else
      return response = Hashie::Mash.new(request)
  end
end

# File lib/RubyBtce.rb, line 145
def self.trades(opts={})
  request = RubyBtce.api("TradeHistory", opts)
  if request['success'] == 1
    return response = Hashie::Mash.new(request['return'])
  else
    return request['error']
  end
end

# File lib/RubyBtce.rb, line 136
def self.transactions(opts={})
      request = RubyBtce.api("TransHistory", opts)
      if request['success'] == 1
      return response = Hashie::Mash.new(request['return'])
  else
      return request['error']
  end
end