# frozen_string_literal: true

module Brevio::Session
  # Module used to enable testing for controllers using the Brevio session.
  # Mocks a login to a shared redis, with keys generated by the Brevio::Session::CookieJar.
  #
  module Testing
    # Simulates a user with a shared Brevio session. We can specify which *brevio_id* the
    # mocked ID service should return (as well as a custom last updated_at timestamp).
    #
    # The user needs to have the following methods defined: #brevio_id, #audit_company
    #
    def brevio_login(user, updated_at: Time.current.yesterday)
      redis_key = SecureRandom.hex(6)

      session_hash = { user_id: user.brevio_id,
                       audit_company_id: user.audit_company.brevio_id,
                       user_patch: user.patch,
                       user_stamp: updated_at }

      Testing.config.logger.info "setting Brevio session to #{session_hash}"

      Testing.config.gem_config.redis.set(
        redis_key,
        session_hash
      )

      Testing.config.gem_config.redis.set("brevio-id:audit-company:#{user.audit_company.brevio_id}:patch", user.audit_company.patch)
      set_cookie(redis_key)
    end

    def brevio_login_new_user(user_brevio_id, patch: nil, audit_company:)
      redis_key = SecureRandom.hex(6)

      session_hash = { user_id: user_brevio_id,
                       audit_company_id: audit_company.brevio_id,
                       user_patch: patch || SecureRandom.hex(12),
                       user_stamp: Time.current.yesterday }

      Testing.config.logger.info "setting Brevio session to #{session_hash}"

      Testing.config.gem_config.redis.set(
        redis_key,
        session_hash
      )
      set_cookie(redis_key)
    end

    def brevio_logout
      cookies[Testing.config.gem_config.session_cookie] = nil
    end

    # rubocop:disable Naming/AccessorMethodName (set makes sense here)
    def set_cookie(value)
      cookies[Testing.config.gem_config.session_cookie] = value
    end
    # rubocop:enable Naming/AccessorMethodName

    extend self

    attr_accessor :sessions, :config

    def setup!(logger:)
      self.config = Config.new
      config.logger = logger
      config.gem_config = Brevio::Session::Config.config
      config.logger.info '--- 👨‍🔬 Setting up Brevio Session gem for testing 👨‍🔬 ---'

      # Ensures we return a mocked value of the session, rather than something which depends on
      # the cryptographically signed value.
      #
      Brevio::Session::Cookies::Parse.send(:define_method, :perform!) do |cookie|
        raise NilSession if cookie.nil?
        cookie
      end
    end

    class Config
      attr_accessor :logger, :gem_config
    end
  end
end