module Qeweney::RequestInfoMethods

def accept_encoding
  encoding = @headers['accept-encoding']
  return [] unless encoding
  encoding.split(',').map { |i| i.strip }
end

def connection
  @headers['connection']
end

def cookies
  @cookies ||= parse_cookies(headers['cookie'])
end

def forwarded_for
  @headers['x-forwarded-for']
end

def full_uri
  @full_uri = "#{scheme}://#{host}#{uri}"
end

def host
  @headers['host'] || @headers[':authority']
end

def method
  @method ||= @headers[':method'].downcase
end

def parse_cookies(cookies)
  return {} unless cookies
  cookies.split(SEMICOLON).each_with_object({}) do |c, h|
    raise BadRequestError, 'Invalid cookie format' unless c.strip =~ COOKIE_RE
    key, value = Regexp.last_match[1..2]
    h[key] = EscapeUtils.unescape_uri(value)
  end
end

def parse_query(query)
  query.split('&').each_with_object({}) do |kv, h|
    k, v = kv.match(QUERY_KV_REGEXP)[1..2]
    h[k.to_sym] = v ? URI.decode_www_form_component(v) : true
  end
end

def path
  @path ||= uri.path
end

def protocol
  @protocol ||= @adapter.protocol
end

def query
  return @query if @query
  @query = (q = uri.query) ? parse_query(q) : {}
end

def query_string
  @query_string ||= uri.query
end

def request_id
  @headers['x-request-id']
end

def rewrite!(src, replacement)
  @headers[':path'] = @headers[':path']
    .gsub(src, replacement)
    .gsub('//', '/')
  @path = nil
  @uri = nil
  @full_uri = nil
  self
end

def scheme
  @scheme ||= @headers[':scheme']
end

def upgrade_protocol
  connection == 'upgrade' && @headers['upgrade']&.downcase
end

def uri
  @uri ||= URI.parse(@headers[':path'] || '')
end

def websocket_version
  headers['sec-websocket-version'].to_i
end