class ShopifyAPI::Utils::SessionUtils

def cookie_session_id(cookies)
  cookies[Auth::Oauth::SessionCookie::SESSION_COOKIE_NAME]
end

def current_session_id(auth_header, cookies, online)
  if Context.embedded?
    if auth_header
      matches = auth_header.match(/^Bearer (.+)$/)
      unless matches
        ShopifyAPI::Logger.warn("Missing Bearer token in authorization header")
        raise Errors::MissingJwtTokenError, "Missing Bearer token in authorization header"
      end
      jwt_payload = Auth::JwtPayload.new(T.must(matches[1]))
      shop = jwt_payload.shop
      if online
        jwt_session_id(shop, jwt_payload.sub)
      else
        offline_session_id(shop)
      end
    else
      # falling back to session cookie
      raise Errors::CookieNotFoundError, "JWT token or Session cookie not found for app" unless
        cookies && cookies[Auth::Oauth::SessionCookie::SESSION_COOKIE_NAME]
      cookie_session_id(cookies)
    end
  else
    raise Errors::CookieNotFoundError, "Session cookie not found for app" unless
      cookies && cookies[Auth::Oauth::SessionCookie::SESSION_COOKIE_NAME]
    cookie_session_id(cookies)
  end
end

def jwt_session_id(shop, user_id)
  "#{shop}_#{user_id}"
end

def offline_session_id(shop)
  "offline_#{shop}"
end