Amplify custom auth domain template.yml

template.yml

AWSTemplateFormatVersion: 2010-09-09

Parameters:
  env:
    Type: String
  authCognitoResourceUserPoolId:
    Type: String

Mappings:
  CustomAuthDomains:
    master:
      domain: auth.app.yourdomain.com

Conditions:
  CreateCustomAuthDomain: !Equals
    - master
    - !Ref env

Resources:
  CustomDomainCert:
    Condition: CreateCustomAuthDomain
    Type: AWS::CertificateManager::Certificate
    Properties:
      DomainName: !FindInMap
        - CustomAuthDomains
        - !Ref env
        - domain
      ValidationMethod: DNS

  AuthDomain:
    Type: AWS::Cognito::UserPoolDomain
    Condition: CreateCustomAuthDomain
    Properties:
      Domain: !FindInMap
        - CustomAuthDomains
        - !Ref env
        - domain
      UserPoolId: !Ref authCognitoResourceUserPoolId
      CustomDomainConfig:
        CertificateArn: !Ref CustomDomainCert