# frozen_string_literal: true

require "curb"
require_relative "jwt_test_helper"

module NulogySSO
  module TestUtilities

    # This provides a simple mock implementation of Auth0 endpoints, via mockserver
    class Auth0Mock
      def initialize
        @jwt_test_helper = NulogySSO::TestUtilities::JwtTestHelper.new
      end

      def setup_jwks
        mockserver_expectation(
          httpRequest: {
            method: "GET",
            path: "/.well-known/jwks.json"
          },
          httpResponse: {
            body: jwt_test_helper.jwks_json
          }
        )
      end

      def setup(email:, redirect_path: "", status_code: 200)
        mockserver_reset

        redirect_query_params = {
          code: "FAKE_CODE",
          origin: "#{capybara_current_host}#{redirect_path}"
        }.to_query
        mockserver_expectation(
          httpRequest: {
            method: "GET",
            path: "/authorize"
          },
          httpResponse: {
            statusCode: 302,
            headers: {
              Location: ["#{capybara_current_host}/nulogy_sso/code?#{redirect_query_params}"]
            }
          }
        )

        setup_jwks

        mockserver_expectation(
          httpRequest: {
            method: "POST",
            path: "/oauth/token"
          },
          httpResponse: {
            statusCode: status_code,
            body: signed_jwt_response(email)
          }
        )
      end

      def mockserver_reset
        Curl.put(mockserver_url("reset"))
      end

      private

      attr_reader :jwt_test_helper

      def mockserver_expectation(body)
        Curl.put(mockserver_url("expectation"), body.to_json)
      end

      def mockserver_url(path = "")
        "#{ENV.fetch("NULOGY_SSO_MOCKSERVER_HOST")}:#{ENV.fetch("NULOGY_SSO_MOCKSERVER_PORT")}/mockserver/#{path}"
      end

      def signed_jwt_response(email, overrides = {})
        jwt = jwt_test_helper.jwt(email, overrides)

        { access_token: jwt }.to_json
      end

      def capybara_current_host
        @capybara_current_host ||= "http://#{Capybara.current_session.server.host}:#{Capybara.current_session.server.port}"
      end
    end
  end
end