sst cognito custom domain

AuthConstruct.ts

import * as cdk from '@aws-cdk/core';
import * as cognito from '@aws-cdk/aws-cognito';
import * as route53 from '@aws-cdk/aws-route53';
import * as route53Targets from '@aws-cdk/aws-route53-targets';
import * as acm from '@aws-cdk/aws-certificatemanager';
import { RemovalPolicy } from "@aws-cdk/core";
import { Auth } from '@serverless-stack/resources';

type AuthConstructProps = cdk.StackProps & {
  hostedZoneRootRecord: route53.ARecord;
  hostedZone: route53.IHostedZone;
  certificate: acm.ICertificate;
  stage: string
}

export default class AuthConstruct extends cdk.Construct {
  public readonly auth: Auth; 
  
  constructor(scope: cdk.Construct, id: string, props: AuthConstructProps) {
    super(scope, id);
    
    const prefix = props.stage === 'prod' ? "auth" : props.stage + "-auth"; 
    const domainName = prefix + "." + props.hostedZone.zoneName;

    const userPool = new cognito.UserPool(this, "UserPool", {
      userPoolName: "UserPool",
      signInAliases: { email: true },
      selfSignUpEnabled: true,
      accountRecovery: cognito.AccountRecovery.EMAIL_ONLY,
      signInCaseSensitive: false,
      removalPolicy: RemovalPolicy.DESTROY
    });

    const userPoolClient = new cognito.UserPoolClient(this, "UserPoolClient", {
      userPool: userPool,
      authFlows: {
        userPassword: true,
        userSrp: true,
      },
    });

    const userPoolDomain = new cognito.UserPoolDomain(this, "UserPoolDomain", {
      userPool: userPool,
      customDomain: {
        domainName: domainName,
        certificate: props.certificate
      }
    });
    
    userPoolDomain.node.addDependency(props.hostedZoneRootRecord);

    new route53.ARecord(this, "UserPoolDomainARecord", {
      zone: props.hostedZone,
      recordName: domainName,
      target: route53.RecordTarget.fromAlias(
        new route53Targets.UserPoolDomainTarget(userPoolDomain)
      ),
    });

    this.auth = new Auth(this, "Auth", {
      cognito: {
        userPool,
        userPoolClient
      }
    });
  }
}