module Everlastly

# File lib/everlastly.rb, line 64
def self.anchor(dochash, params={})
  payload = { hash: dochash } 
  if params[:no_nonce] then
    payload[:no_nonce]='True'
  else
    payload[:nonce] = (Time.now.to_f * 10000000).to_i
  end
  payload[:metadata] = JSON.dump(params[:metadata]) if params[:metadata] 
  payload[:no_salt] = 'True' if params[:no_salt] 
  payload[:save_dochash_in_receipt] = 'True' if params[:save_dochash_in_receipt]
  begin
    response = JSON.parse(post('anchor', payload))      
    { success: (response["status"]=="Accepted"), error_message: response["error"], receiptID: response["receiptID"] }
  rescue JSON::ParserError
    { success: false, error_message: "Strange answer from server" }
  rescue RestClient::Exception
    { success: false, error_message: "Network error" }
  rescue SocketError
    { success: false, error_message: "Network error" }
  end
end

# File lib/everlastly.rb, line 49
def self.get_receipts(receipts, params={})
  payload = { uuids: JSON.dump(receipts)}
  payload[:nonce] = (Time.now.to_f * 10000000).to_i unless params[:no_nonce] 
  begin
    response = JSON.parse(post('get_receipts', payload))
    { success: true, receipts: response["receipts"] }
  rescue JSON::ParserError
    { success: false, error_message: "Strange answer from server" }
  rescue RestClient::Exception
    { success: false, error_message: "Network error" }
  rescue SocketError
    { success: false, error_message: "Network error" }
  end
end

# File lib/everlastly.rb, line 35
def self.setup
  @configuration ||= Configuration.new
  yield( configuration )
end

# File lib/everlastly.rb, line 93
def self.post( command, payload )
  encoded_payload = Addressable::URI.form_encode(payload)
  sign = OpenSSL::HMAC.hexdigest( 'sha512', configuration.private_key , encoded_payload )
  resource[ command ].post encoded_payload, { "pub-key" => configuration.public_key , sign: sign, 'content-type' => 'application/x-www-form-urlencoded' }
end

# File lib/everlastly.rb, line 88
def self.resource
  @@resouce ||= RestClient::Resource.new( 'https://everlastly.com/api/v1/' )
end