module Coinpayments

# File lib/coinpayments.rb, line 44
def self.balances(options = {})
  api_call(options)
end

# File lib/coinpayments.rb, line 14
def self.configure
  yield(configuration) if block_given?
end

# File lib/coinpayments.rb, line 58
def self.create_mass_withdrawal(withdrawals)
  api_call(withdrawals)
end

# File lib/coinpayments.rb, line 48
def self.create_transaction(amount, currency1, currency2, options = {})
  args = { amount: amount, currency1: currency1, currency2: currency2 }.merge!(options)
  api_call(args)
end

# File lib/coinpayments.rb, line 53
def self.create_withdrawal(amount, currency, address, options = {})
  args = { amount: amount, currency: currency, address: address }.merge!(options)
  api_call(args)
end

# File lib/coinpayments.rb, line 67
def self.get_callback_address(currency, options = {})
  args = { currency: currency }.merge!(options)
  api_call(args)
end

# File lib/coinpayments.rb, line 62
def self.get_tx_info(txid)
  args = { txid: txid }
  api_call(args)
end

# File lib/coinpayments.rb, line 72
def self.get_withdrawal_info(id)
  args = { id: id }
  api_call(args)
end

# File lib/coinpayments.rb, line 40
def self.rates(options = {})
  api_call(options)
end

# File lib/coinpayments.rb, line 77
def self.sign(callback_body)
  OpenSSL::HMAC.hexdigest(OpenSSL::Digest.new('sha512'),
                          configuration.secret_phrase,callback_body)
end

# File lib/coinpayments.rb, line 32
def self.api_call(args)
  body = required_params.merge!(cmd: caller[0][/`.*'/][1..-2]).merge!(args)
  response = HTTParty.post(configuration.base_uri, body: body, headers: {'hmac' => hmac(body)})
  response['error'] == 'ok' ? Hashie::Mash.new(response['result']) : response['error']
end

# File lib/coinpayments.rb, line 28
def self.hmac(body)
  OpenSSL::HMAC.hexdigest(OpenSSL::Digest.new('sha512'), configuration.private_api_key, HTTParty::HashConversions.to_params(body))
end

# File lib/coinpayments.rb, line 24
def self.required_params
  { version: configuration.version, key: configuration.public_api_key }
end