---
AWSTemplateFormatVersion: '2010-09-09'
Description: 'Good SubnetRouteTableAssociation'

Parameters:
  PublicRouteTable:
    Type: String
  PrivateRouteTable:
    Type: String
  AppSubnet01:
    Type: String
  PublicSubnet01:
    Type: String
  PublicProxySubnet:
    Type: String
  PrivateProxySubnet:
    Type: String
  AppType:
    Type: String
    AllowedValues: ['Public', 'Public']

Conditions:
  isPublic: !Equals [ !Ref AppType, 'Public' ]
  isPrivate: !Equals [ !Ref AppType, 'Private' ]

Resources:
  AppSubnetPublicRouteTableAssociation:
    Condition: isPublic
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
        RouteTableId: 
          Ref: PublicRouteTable
        SubnetId: 
          Ref: AppSubnet01

  AppSubnetPrivateRouteTableAssociation:
    Condition: isPrivate
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
        RouteTableId: 
          Ref: PrivateRouteTable
        SubnetId: 
          Ref: AppSubnet01

  ProxySubnetRouteTableAssociation:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
        RouteTableId: 
          Ref: PublicRouteTable
        SubnetId: 
          Fn::If: [ isPublic, Ref: PublicProxySubnet , Ref: PrivateProxySubnet ]
  
  PublicSubnetRouteTableAssociation:
      Type: AWS::EC2::SubnetRouteTableAssociation
      Properties:
        RouteTableId: 
          Ref: PublicRouteTable
        SubnetId: 
          Ref: PublicSubnet01

  CustomResource:
      Type: AWS::CloudFormation::CustomResource
      Properties:
        ServiceToken: arn:aws:sns:region:account-id:topicname

  CustomSubnetRouteTableAssociation:
      Type: AWS::EC2::SubnetRouteTableAssociation
      Properties:
        RouteTableId: 
          Ref: PublicRouteTable
        SubnetId: 
          !GetAtt CustomResource.PublicSubnet