# Gets host's API key and saves it on the node object.
action :get_apikey do
  director_secrets = data_bag_item('secrets', 'icinga-director')
  director_username = director_secrets['username']
  director_password = director_secrets['password']
  director_apikey = director_secrets['api_key']

  if director_username.nil? || director_password.nil?
    raise "Cannot call :get_apikey action without specifying username and password to the Icinga Director API."
  end

  # Generate request URL
  base_uri = new_resource.director_url
  uri = URI.parse("#{base_uri}host?name=#{node['fqdn']}")
  Chef::Log.debug("Retrieving API key for the host from the Icinga Director API. Request URL: #{uri}.")

  # Create HTTP request
  req = Net::HTTP::Get.new(uri)
  req.basic_auth director_username, director_password
  req['Accept'] = 'application/json'

  # Create and configure HTTP client
  http = Net::HTTP.new(uri.hostname, uri.port)
  http.use_ssl = true
  http.verify_mode = OpenSSL::SSL::VERIFY_NONE

  # Execute request
  res = http.request(req)
  res_status_code = res.code.to_i

  if res_status_code == 200
    # Node object found
    res_object = JSON.parse(res.body)
    unless res_object['api_key'].nil? || res_object['api_key'].empty?
      Chef::Log.info('Retrieved the API key for host.')
      # Save key on the node object.
      node.normal['icinga2_client']['host_api_key'] = res_object['api_key']
      return
    end
  elsif res_status_code >= 400 && res_status_code < 600
    Chef::Log.error("Failed to retrieve host information from the Icinga Director. Code: #{res_status_code}. Body: #{res.body}.")
  end

  # Node doesn't exist. Register
  Chef::Log.info("Attempting to register host with Icinga server.")

  reg_uri = URI.parse("#{base_uri}self-service/register-host?name=#{node['fqdn']}&key=#{director_apikey}")

  reg_req = Net::HTTP::Post.new(reg_uri)
  reg_req['Accept'] = 'application/json'

  http = Net::HTTP.new(reg_uri.hostname, reg_uri.port)
  http.use_ssl = true
  http.verify_mode = OpenSSL::SSL::VERIFY_NONE
  res = http.request(reg_req)

  if res.code.to_i == 200
    Chef::Log.info('Successfully registered host with Icinga server.')
    node.normal['icinga2_client']['host_api_key'] = JSON.parse(res.body)
  else
    Chef::Log.error("Failed to register host with the Icinga server. Code: #{res.code.to_i}. Body: #{res.body}")
  end
end