added api for accr center

app/controllers/api/v1/accreditation_center/auth_controller.rb

@@ -0,0 +1,65 @@
+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
+      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