internetee-registry/app/controllers/api/v1/accreditation_center/auth_controller.rb

require 'serializers/repp/domain'

module Api
  module V1
    module AccreditationCenter
      class AuthController < ::Api::V1::AccreditationCenter::BaseController
        before_action :authenticate_user

        def index
          login = @current_user
          registrar = @current_user.registrar

          # rubocop:disable Style/AndOr
          render_success(data: nil) and return unless login
          # rubocop:enable Style/AndOr

          data = set_values_to_data(login: login, registrar: registrar)

          render_success(data: data)
        end

        private

        def authenticate_user
          username, password = Base64.urlsafe_decode64(basic_token).split(':')
          @current_user ||= ApiUser.find_by(username: username, plain_text_password: password)

          return if @current_user

          raise(ArgumentError)
        rescue NoMethodError, ArgumentError
          @response = { code: 2202, message: 'Invalid authorization information' }
          render(json: @response, status: :unauthorized)
        end

        def basic_token
          pattern = /^Basic /
          header  = request.headers['Authorization']
          header = header.gsub(pattern, '') if header&.match(pattern)
          header.strip
        end

        def set_values_to_data(login:, registrar:)
          data = login.as_json(only: %i[id
                                        username
                                        name
                                        uuid
                                        roles
                                        accreditation_date
                                        accreditation_expire_date])
          data[:registrar_name] = registrar.name
          data[:registrar_reg_no] = registrar.reg_no
          data[:registrar_email] = registrar.email
          data[:code] = registrar.code
          data
        end

        def render_success(code: nil, message: nil, data: nil)
          @response = { code: code || 1000, message: message || 'Command completed successfully',
                        data: data || {} }

          render(json: @response, status: :ok)
        end
      end
    end
  end
end