added api for accr center

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

@@ -0,0 +1,37 @@
+require 'auth_token/auth_token_decryptor'
+
+module Api
+  module V1
+    module AccreditationCenter
+      class BaseController < ActionController::API
+        before_action :check_ip_whitelist
+
+        rescue_from ActiveRecord::RecordNotFound, with: :show_not_found_error
+        rescue_from ActiveRecord::RecordInvalid, with: :show_invalid_record_error
+        rescue_from(ActionController::ParameterMissing) do |parameter_missing_exception|
+          error = {}
+          error[parameter_missing_exception.param] = ['parameter is required']
+          response = { errors: [error] }
+          render json: response, status: :unprocessable_entity
+        end
+
+        private
+
+				def check_ip_whitelist
+          allowed_ips = ENV['accr_center_api_auth_allowed_ips'].to_s.split(',').map(&:strip)
+          return if allowed_ips.include?(request.ip) || Rails.env.development?
+
+          render json: { errors: [{ base: ['Not authorized'] }] }, status: :unauthorized
+        end
+
+        def show_not_found_error
+          render json: { errors: [{ base: ['Not found'] }] }, status: :not_found
+        end
+
+        def show_invalid_record_error(exception)
+          render json: { errors: exception.record.errors }, status: :bad_request
+        end
+      end
+    end
+  end
+end