class LeapTest

  #
  # generates a couchdb url for when couchdb is running
  # remotely and is available via stunnel.
  #
  # example properties:
  #
  # stunnel:
  #   clients:
  #     couch_client:
  #       couch1_5984:
  #         accept_port: 4000
  #         connect: couch1.bitmask.i
  #         connect_port: 15984
  #
  def couchdb_urls_via_stunnel(path="", options=nil)
    if options && options[:username] && options[:password]
      userpart = "%{username}:%{password}@" % options
    else
      userpart = ""
    end
    assert_property('stunnel.clients.couch_client').values.collect do |stunnel_conf|
      assert port = stunnel_conf['accept_port'], 'Field `accept_port` must be present in `stunnel` property.'
      URLString.new("http://#{userpart}localhost:#{port}#{path}").tap {|url|
        remote_ip_address = TCPSocket.gethostbyname(stunnel_conf['connect']).last
        url.memo = "(via stunnel to %s:%s, aka %s)" % [stunnel_conf['connect'], stunnel_conf['connect_port'], remote_ip_address]
      }
    end
  end

  #
  # generates a couchdb url for accessing couchdb via haproxy
  #
  # example properties:
  #
  # haproxy:
  #   couch:
  #     listen_port: 4096
  #     servers:
  #       panda:
  #         backup: false
  #         host: localhost
  #         port: 4000
  #         weight: 100
  #         writable: true
  #
  def couchdb_url_via_haproxy(path="", options=nil)
    if options && options[:username] && options[:password]
      userpart = "%{username}:%{password}@" % options
    else
      userpart = ""
    end
    port = assert_property('haproxy.couch.listen_port')
    return URLString.new("http://#{userpart}localhost:#{port}#{path}").tap { |url|
      url.memo = '(via haproxy)'
    }
  end

  #
  # generates a couchdb url for when couchdb is running locally.
  #
  # example properties:
  #
  # couch:
  #   port: 5984
  #
  def couchdb_url_via_localhost(path="", options=nil)
    port = (options && options[:port]) || assert_property('couch.port')
    if options && options[:username]
      password = property("couch.users.%{username}.password" % options)
      userpart = "%s:%s@" % [options[:username], password]
    else
      userpart = ""
    end
    return URLString.new("http://#{userpart}localhost:#{port}#{path}").tap { |url|
      url.memo = '(via direct localhost connection)'
    }
  end

  #
  # returns a single url for accessing couchdb
  #
  def couchdb_url(path="", options=nil)
    if property('couch.port')
      couchdb_url_via_localhost(path, options)
    elsif property('stunnel.clients.couch_client')
      couchdb_urls_via_stunnel(path, options).first
    end
  end

  #
  # returns an array of urls for accessing couchdb
  #
  def couchdb_urls(path="", options=nil)
    if property('couch.port')
      [couchdb_url_via_localhost(path, options)]
    elsif property('stunnel.clients.couch_client')
      couchdb_urls_via_stunnel(path, options)
    end
  end

end