class Capybara::Server

def base_url
  "http#{'s' if using_ssl?}://#{host}:#{port}"
end

def boot
  unless responsive?
    Capybara::Server.ports[port_key] = port
    @server_thread = Thread.new do
      Capybara.server.call(middleware, port, host)
    end
    timer = Capybara::Helpers.timer(expire_in: 60)
    until responsive?
      raise 'Rack application timed out during boot' if timer.expired?
      @server_thread.join(0.1)
    end
  end
  self
end

def error
  middleware.error
end

def find_available_port(host)
  server = TCPServer.new(host, 0)
  port = server.addr[1]
  server.close
  # Workaround issue where some platforms (mac, ???) when passed a host
  # of '0.0.0.0' will return a port that is only available on one of the
  # ip addresses that resolves to, but the next binding to that port requires
  # that port to be available on all ips
  server = TCPServer.new(host, port)
  port
rescue Errno::EADDRINUSE
  retry
ensure
  server&.close
end

def initialize(app,
               *deprecated_options,
               port: Capybara.server_port,
               host: Capybara.server_host,
               reportable_errors: Capybara.server_errors,
               extra_middleware: [])
  unless deprecated_options.empty?
    warn 'Positional arguments, other than the application, to Server#new are deprecated, please use keyword arguments'
  end
  @app = app
  @extra_middleware = extra_middleware
  @server_thread = nil # suppress warnings
  @host = deprecated_options[1] || host
  @reportable_errors = deprecated_options[2] || reportable_errors
  @port = deprecated_options[0] || port
  @port ||= Capybara::Server.ports[port_key]
  @port ||= find_available_port(host)
  @checker = Checker.new(@host, @port)
end

def middleware
  @middleware ||= Middleware.new(app, @reportable_errors, @extra_middleware)
end

def pending_requests?
  middleware.pending_requests?
end

def port_key
  Capybara.reuse_server ? app.object_id : middleware.object_id
end

def ports
  @ports ||= {}
end

def reset_error!
  middleware.clear_error
end

def responsive?
  return false if @server_thread&.join(0)
  res = @checker.request { |http| http.get('/__identify__') }
  res.body == app.object_id.to_s if res.is_a?(Net::HTTPSuccess) || res.is_a?(Net::HTTPRedirection)
rescue SystemCallError, Net::ReadTimeout, OpenSSL::SSL::SSLError
  false
end

def using_ssl?
  @checker.ssl?
end

def wait_for_pending_requests
  timer = Capybara::Helpers.timer(expire_in: 60)
  while pending_requests?
    raise "Requests did not finish in 60 seconds: #{middleware.pending_requests}" if timer.expired?
    sleep 0.01
  end
end