optionalModifications.md

Optional Modifications

Allow Instructors to Create a Course

cdk/OpenAPI_Swagger_Definition.yaml

• Find /admin/create_course:
• Change the endpoint name to /instructor/create_course
• Change tag from Admin to Instructor
• Change security from adminAuthorizer to instructorAuthorizer
• Change x-amazon-apigateway-integration URI from:

  arn:aws:apigateway:${AWS::Region}:lambda:path/2015-03-31/functions/${adminFunction.Arn}/invocations

  to:

  arn:aws:apigateway:${AWS::Region}:lambda:path/2015-03-31/functions/${instructorFunction.Arn}/invocations

cdk/lambda/adminFunction

• Remove the case: "POST /admin/create_course"

cdk/lambda/InstructorFunction

• Add the same case and rename it to "POST /instructor/create_course"

Frontend

• In frontend/src/pages/instructor/InstructorSidebar.jsx create a sidebar entry for creating a course
• Create a component similar to frontend/src/pages/admin/AdminCreateCourse.jsx which calls the new endpoint and put it in the sidebar

Restrict Sign Up to Specific Email Domains

cdk/lib/api-gateway-stack.ts

• Create a lambda function
• Set it as a pre sign-up trigger for the user pool using

  this.userPool.addTrigger(
      cognito.UserPoolOperation.PRE_SIGN_UP,
      <lamba>
      );
  

  replacing <lambda> with your lambda function

lambda function

• In the lambda function, specify the domains and ensure the user's email attribute matches the domain. Example code is shown below:

  exports.handler = async (event) => {
  const allowedDomains = ['example.com', 'anotherdomain.com']; // Add allowed domains here
  const email = event.request.userAttributes.email;
  const domain = email.split('@')[1];
  
  if (!allowedDomains.includes(domain)) {
      throw new Error("Sign up is restricted to specific email domains.");
  }
  return event;
  };