Resources:
  Vpc:
    Type: AWS::EC2::VPC
    DeletionPolicy: Retain
    Properties:
      CidrBlock: !Ref VpcCidr
      EnableDnsSupport: 'true'
      EnableDnsHostnames: 'true'

  PubSubnetAz1:
    Type: AWS::EC2::Subnet
    DeletionPolicy: Retain
    Properties:
      VpcId: !Ref Vpc
      CidrBlock: !Ref SubnetCidr1
      AvailabilityZone: !Select [0, !Split [",", !Ref AvailabilityZones] ]
      MapPublicIpOnLaunch: true

  PubSubnetAz2:
    Type: AWS::EC2::Subnet
    DeletionPolicy: Retain
    Properties:
      VpcId: !Ref Vpc
      CidrBlock: !Ref SubnetCidr2
      AvailabilityZone: !Select [1, !Split [",", !Ref AvailabilityZones] ]
      MapPublicIpOnLaunch: true

  InternetGateway:
    Type: AWS::EC2::InternetGateway
    DeletionPolicy: Retain

  AttachGateway:
    Type: AWS::EC2::VPCGatewayAttachment
    DeletionPolicy: Retain
    Properties:
      VpcId: !Ref Vpc
      InternetGatewayId: !Ref InternetGateway

  RouteViaIgw:
    Type: AWS::EC2::RouteTable
    DeletionPolicy: Retain
    Properties:
      VpcId: !Ref Vpc

  PublicRouteViaIgw:
    Type: AWS::EC2::Route
    DeletionPolicy: Retain
    DependsOn: AttachGateway
    Properties:
      RouteTableId: !Ref RouteViaIgw
      DestinationCidrBlock: 0.0.0.0/0
      GatewayId: !Ref InternetGateway

  PubSubnet1RouteTableAssociation:
    Type: AWS::EC2::SubnetRouteTableAssociation
    DeletionPolicy: Retain
    Properties:
      SubnetId: !Ref PubSubnetAz1
      RouteTableId: !Ref RouteViaIgw

  PubSubnet2RouteTableAssociation:
    Type: AWS::EC2::SubnetRouteTableAssociation
    DeletionPolicy: Retain
    Properties:
      SubnetId: !Ref PubSubnetAz2
      RouteTableId: !Ref RouteViaIgw