class GdsApi::GovukHeaderSniffer

def call(env)
  GdsApi::GovukHeaders.set_header(readable_name, env[@header_name])
  @app.call(env)
end

def initialize(app, header_name)
  @app = app
  @header_name = header_name
end

def readable_name
  @header_name.sub(/^HTTP_/, "").downcase.to_sym
end