module KPM::SystemProxy::EntropyAvailable

def fetch
  entropy_available = nil
  if OS.windows?
    entropy_available = fetch_windows
  elsif OS.linux?
    entropy_available = fetch_linux
  elsif OS.mac?
    entropy_available = fetch_mac
  end
  entropy_available
end

def fetch_linux
  entropy_available_data = `cat /proc/sys/kernel/random/entropy_avail 2>&1`.gsub("\n",'')
  entropy_available = get_hash(entropy_available_data)
  entropy_available
end

def fetch_mac
  entropy_available = get_hash('-')
  entropy_available
end

def fetch_windows
  entropy_available = get_hash('-')
  entropy_available
end

def get_hash(data)
  entropy_available = Hash.new
  entropy_available['entropy_available'] = {:entropy => 'available', :value => data}
  entropy_available
end

def get_labels
  labels = [{:label => :entropy},
            {:label => :value}]
  labels
end