AWSTemplateFormatVersion: 2010-09-09
Description: >-
  This template creates an Route53 Hosted zone and adds related record sets.
  (qs-1r2g4123h)
Parameters:
  VPCID:
    Type: 'AWS::EC2::VPC::Id'
  SubnetIDs:
    Description: Comma separated Subnet IDs where Gateway VMs need to be launched
    Type: List<AWS::EC2::Subnet::Id>
  UseInternalLoadBalancer:
    Description: Deploy Internal Load Balancer
    Type: String
    Default: "false"
    AllowedValues:
      - 'true'
      - 'false'
Conditions:
  UsingInternalLoadBalancer: !Equals [!Ref UseInternalLoadBalancer, 'true']
Resources:
  ExternalLoadBalancer:
    Type: 'AWS::ElasticLoadBalancingV2::LoadBalancer'
    Properties:
      Type: network
      Scheme: !If [UsingInternalLoadBalancer , "internal", "internet-facing"]
      Subnets: !Ref SubnetIDs
  TcpTargetGroup:
    Type: 'AWS::ElasticLoadBalancingV2::TargetGroup'
    Properties:
      Port: 443
      Protocol: TCP
      VpcId: !Ref VPCID
      TargetGroupAttributes:
        - Key: stickiness.enabled
          Value: 'true'
        - Key: stickiness.type
          Value: source_ip
        - Key: preserve_client_ip.enabled
          Value: 'false'
      TargetType: instance
      HealthCheckPort: '443'
      HealthCheckProtocol: TCP
  TcpListener:
    Type: 'AWS::ElasticLoadBalancingV2::Listener'
    Properties:
      LoadBalancerArn: !Ref ExternalLoadBalancer
      Port: 443
      Protocol: TCP
      DefaultActions:
        - Type: forward
          TargetGroupArn: !Ref TcpTargetGroup
Outputs:
  TcpTargetGroup:
    Value: !Ref TcpTargetGroup
    Description: Deployment target group ARN

  ExternalLoadBalancerDns:
    Value: !GetAtt
      - ExternalLoadBalancer
      - DNSName
    Description: DNS name of the External load balancer

  CanonicalHostedZoneID:
    Value: !GetAtt
      - ExternalLoadBalancer
      - CanonicalHostedZoneID
    Description: Hosted Zone id of the External load balancer