---
AWSTemplateFormatVersion: "2010-09-09"
Description: >
  At Least One Property types
Parameters:
  myAmiId:
    Type: String
    Default: ''
  LaunchConfiguration:
    Type: String
Conditions:
  useAmiId: !Not [!Equals [!Ref myAmiId, '']]
Resources:
  myInstance:
    Type: AWS::EC2::Instance
    Properties:
      ImageId: ami-132456
      BlockDeviceMappings:
      -
        DeviceName: myDevice
  AutoScalingGroup:
    Type: AWS::AutoScaling::AutoScalingGroup
    Properties:
      InstanceId: !If ['useAmiId', {'Ref': 'myAmiId'}, {'Ref': 'AWS::NoValue'}]
      LaunchConfigurationName: !If ['useAmiId', {'Ref': 'LaunchConfiguration'}, {'Ref': 'AWS::NoValue'}]
      MaxSize: '3'
      MinSize: '1'
  AutoScalingGroup2:
    Type: AWS::AutoScaling::AutoScalingGroup
    Properties:
      Fn::If:
      - useAmiId
      - InstanceId: !Ref myAmiId
        LaunchConfigurationName: myLaunchConfiguration
        MaxSize: '3'
        MinSize: '1'
      - InstanceId: !Ref myAmiId
        MaxSize: '3'
        MinSize: '1'
  S3Bucket:
    Type: AWS::S3::Bucket
    Properties:
      AccessControl: PublicRead
      WebsiteConfiguration:
        IndexDocument: index.html
        ErrorDocument: error.html
        RoutingRules:
        - RedirectRule:
            HostName: test
          RoutingRuleCondition:
            HttpErrorCodeReturnedEquals: 404
            KeyPrefixEquals: docs/