module Http

module Headers

# https://github.com/rack/rack/blob/master/lib/rack.rb

HTTP_VERSION = 'HTTP_VERSION'

PATH_INFO = 'PATH_INFO'

REQUEST_METHOD = 'REQUEST_METHOD'

QUERY_STRING = 'QUERY_STRING'

CONTENT_TYPE = 'Content-Type'

GET = 'GET'

POST = 'POST'

PUT = 'PUT'

PATCH = 'PATCH'

DELETE = 'DELETE'

HEAD = 'HEAD'

OPTIONS = 'OPTIONS'

SUPPORTED_METHODS = [GET, POST, PUT, PATCH, DELETE, HEAD, OPTIONS].freeze

SUPPORTED_METHODS_WITHOUT_OPTIONS = Grape::Util::LazyObject.new { [GET, POST, PUT, PATCH, DELETE, HEAD].freeze }

HTTP_ACCEPT_VERSION = 'HTTP_ACCEPT_VERSION'

X_CASCADE = 'X-Cascade'

HTTP_TRANSFER_ENCODING = 'HTTP_TRANSFER_ENCODING'

HTTP_ACCEPT = 'HTTP_ACCEPT'

FORMAT = 'format'

HTTP_HEADERS = Grape::Util::LazyObject.new do

common_http_headers = %w[

Version

Host

Connection

Cache-Control

Dnt

Upgrade-Insecure-Requests

User-Agent

Sec-Fetch-Dest

Accept

Sec-Fetch-Site

Sec-Fetch-Mode

Sec-Fetch-User

Accept-Encoding

Accept-Language

Cookie

].freeze

common_http_headers.each_with_object({}) do |header, response|

response["HTTP_#{header.upcase.tr('-', '_')}"] = header

end.freeze

end

def self.find_supported_method(route_method)

Grape::Http::Headers::SUPPORTED_METHODS.detect { |supported_method| supported_method.casecmp(route_method).zero? }

end

end

end