---
AWSTemplateFormatVersion: "2010-09-09"
Parameters:
  ProjectS3Root:
    Type: String
  SSMMasterDBUsernameKeyFullName:
    Type: String
  SSMMasterDBPasswordKeyFullName:
    Type: String
  SSMLambdaARN:
    Type: String
  SSMModifiedAt:
    Type: String
  SSMLookup:
    Type: String
    Default: true
  PGMasterUser:
    Type: String
    Default: NONE
  PGMasterPassword:
    Type: String
    Default: NONE
Conditions:
  UseSSM: !Equals [ !Ref SSMLookup, true ]
Resources:
  myElasticSearch:
    Type: AWS::Elasticsearch::Domain
    Properties: {}
  RDSCredentials:
    Condition: UseSSM
    Type: AWS::CloudFormation::CustomResource
    Version: 1.0
    Properties:
      ServiceToken: !Ref SSMLambdaARN
      SSMKeyList: !Sub ${SSMMasterDBUsernameKeyFullName},${SSMMasterDBPasswordKeyFullName}
      SSMModifiedAt: !Ref SSMModifiedAt

  ############################## Setup Backends ##############################
  Postgres:
    Type: AWS::CloudFormation::Stack
    Properties:
      TemplateURL: !Join [ "/", [ !Ref ProjectS3Root, "templates/backends/rds.yaml" ] ]
      Parameters:
        EnvironmentName: !Ref AWS::StackName
        # Shouldn't raise an error when using a Ref for the attribute
        RdsMasterUsername: !If [ UseSSM, "Fn::GetAtt": [ RDSCredentials, !Ref SSMMasterDBUsernameKeyFullName ], !Ref PGMasterUser ]
        RdsMasterPassword: !If [ UseSSM, "Fn::GetAtt": [ RDSCredentials, !Ref SSMMasterDBPasswordKeyFullName ], !Ref PGMasterPassword ]
  myCluster:
    Type: "AWS::Redshift::Cluster"
    Properties:
      DBName: "mydb"
      MasterUsername: "master"
      MasterUserPassword:
        Ref: "PGMasterPassword"
      NodeType: "ds2.xlarge"
      ClusterType: "single-node"
      Tags:
        - Key: foo
          Value: bar
  MyStack:
    Type: AWS::CloudFormation::Stack
    Properties:
      ProductName: example
      ProvisioningArtifactName: v1
Outputs:
  ElasticSearchHostname:
    Value:
      Fn::GetAtt: myElasticSearch.DomainEndpoint
  RedshiftClusterEndpointAddress:
    Description: Endpoint address for Redshift cluster.
    Value:
      Fn::GetAtt: myCluster.Endpoint.Address
  OutputValue:
    Value: !GetAtt MyStack.Outputs.Example