class Faraday::Response::Logger

def call(env)
  info "#{env.method} #{env.url.to_s}"
  debug('request') { dump_headers env.request_headers }
  super
end

def dump_headers(headers)
  headers.map { |k, v| "#{k}: #{v.inspect}" }.join("\n")
end

def initialize(app, logger = nil)
  super(app)
  @logger = logger || begin
    require 'logger'
    ::Logger.new(STDOUT)
  end
end

def on_complete(env)
  info('Status') { env.status.to_s }
  debug('response') { dump_headers env.response_headers }
end