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