Configure the Function

Now, we will begin coding the authorization portal application by configuring the function component.

The function’s directory, (functions/authorization_portal_function), contains:

• The index.js main function file
• The catalyst-config.json configuration file
• Node modules
• package.json and package-lock.json dependency files

You will be adding code in the index.js file.

The Basic I/O function contains the following functionalities:

• The end-user’s details will provided as a JSON input to the Custom User Validation function.
• The function is coded to implement a custom logic based upon which the end-user will either be authenticated or denied.

Now, let’s begin coding the Basic I/O function.

Copy the code given below and paste it in the index.js file in the functions/authorization_portal_function directory of your project, and save the file. You can use any IDE of your choice to work with the application’s files.

    

        
index.js
        

            
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         const catalyst = require("zcatalyst-sdk-node");
module.exports = (context, basicIO) => {
  const catalystApp = catalyst.initialize(context);
  const requestDetails = catalystApp
    .userManagement()
    .getSignupValidationRequest(basicIO);
  if (requestDetails) {
    if (requestDetails.user_details.email_id.includes("@zylker.com")) {
      // The actions that occur in the event of a successful authentication can be customized
      basicIO.write(
        JSON.stringify({
          status: "success",
          user_details: {
            first_name: requestDetails.user_details.first_name,
            last_name: requestDetails.user_details.last_name,
            email_id: requestDetails.user_details.email_id,
            role_identifier: "App User", // If you want to override the default role, you can specify the role id/name here.
            org_id: "", // If you are providing the Org ID, make sure it is copied exactly from the console.
          },
        })
      );
    } else {
      // The user has failed authentication
      basicIO.write(
        JSON.stringify({
          status: "failure",
        })
      );
    }
  }
  context.close();
};

         
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The function directory is now configured. We can now proceed to configuring the client directory.