AWSTemplateFormatVersion: '2010-09-09'
Description: >
  **WARNING** This template creates VPC, Subnets, NATGateway
  and related resources. You will be billed for the AWS resources
  used if you create a stack from this template.
Parameters:
  VPCCidr:
    Type: String
    Default: '10.0.0.0/16'
  PublicSubnetCidr:
    Type: String
    Default: '10.0.0.0/24'
  PrivateSubnetFirstCidr:
    Type: String
    Default: '10.0.1.0/24'
  PrivateSubnetSecondCidr:
    Type: String
    Default: '10.0.2.0/24'
  PrivateSubnetThirdCidr:
    Type: String
    Default: '10.0.3.0/24'
Resources:
  VPC:
    Type: AWS::EC2::VPC
    Properties:
      EnableDnsSupport: true
      EnableDnsHostnames: true
      CidrBlock: !Ref 'VPCCidr'
      Tags:
        - Key: 'Name'
          Value: 'MSKVPC'
  PublicSubnetOne:
    Type: AWS::EC2::Subnet
    Properties:
      AvailabilityZone:
         Fn::Select:
         - 0
         - Fn::GetAZs: {Ref: 'AWS::Region'}
      VpcId: !Ref 'VPC'
      CidrBlock: !Ref 'PublicSubnetCidr'
      MapPublicIpOnLaunch: true
      Tags:
        - Key: 'Name'
          Value: 'PublicSubnet'
  PrivateSubnetMSKOne:
    Type: AWS::EC2::Subnet
    Properties:
      AvailabilityZone:
         Fn::Select:
         - 0
         - Fn::GetAZs: {Ref: 'AWS::Region'}
      VpcId: !Ref 'VPC'
      CidrBlock: !Ref 'PrivateSubnetFirstCidr'
      MapPublicIpOnLaunch: false
      Tags:
        - Key: 'Name'
          Value: 'PrivateSubnetMSKOne'
  PrivateSubnetMSKTwo:
    Type: AWS::EC2::Subnet
    Properties:
      AvailabilityZone:
         Fn::Select:
         - 1
         - Fn::GetAZs: {Ref: 'AWS::Region'}
      VpcId: !Ref 'VPC'
      CidrBlock: !Ref 'PrivateSubnetSecondCidr'
      MapPublicIpOnLaunch: false
      Tags:
        - Key: 'Name'
          Value: 'PrivateSubnetMSKTwo'
  PrivateSubnetMSKThree:
    Type: AWS::EC2::Subnet
    Properties:
      AvailabilityZone:
         Fn::Select:
         - 2
         - Fn::GetAZs: {Ref: 'AWS::Region'}
      VpcId: !Ref 'VPC'
      CidrBlock: !Ref 'PrivateSubnetThirdCidr'
      MapPublicIpOnLaunch: false
      Tags:
        - Key: 'Name'
          Value: 'PrivateSubnetMSKThree'
  InternetGateway:
    Type: AWS::EC2::InternetGateway
  GatewayAttachement:
    Type: AWS::EC2::VPCGatewayAttachment
    Properties:
      VpcId: !Ref 'VPC'
      InternetGatewayId: !Ref 'InternetGateway'
  NATEIP:
    Type: AWS::EC2::EIP
    DependsOn: GatewayAttachement
    Properties: 
      Domain: vpc
  NATGateway:
    Type: AWS::EC2::NatGateway
    Properties: 
      AllocationId: !GetAtt NATEIP.AllocationId
      SubnetId: !Ref 'PublicSubnetOne'
      Tags: 
        - Key: 'Name'
          Value: 'ConfluentKafkaNATGateway'
  PublicRouteTable:
    Type: AWS::EC2::RouteTable
    Properties:
      VpcId: !Ref 'VPC'
  PublicRoute:
    Type: AWS::EC2::Route
    DependsOn: GatewayAttachement
    Properties:
      RouteTableId: !Ref 'PublicRouteTable'
      DestinationCidrBlock: '0.0.0.0/0'
      GatewayId: !Ref 'InternetGateway'
  PublicSubnetOneRouteTableAssociation:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      SubnetId: !Ref 'PublicSubnetOne'
      RouteTableId: !Ref PublicRouteTable
  PrivateRouteTable:
    Type: AWS::EC2::RouteTable
    Properties:
      VpcId: !Ref 'VPC'
  PrivateRoute:
    Type: AWS::EC2::Route
    Properties:
      RouteTableId: !Ref 'PrivateRouteTable'
      DestinationCidrBlock: '0.0.0.0/0'
      NatGatewayId: !Ref 'NATGateway'
  PrivateSubnetMSKOneRouteTableAssociation:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      RouteTableId: !Ref 'PrivateRouteTable'
      SubnetId: !Ref 'PrivateSubnetMSKOne'
  PrivateSubnetMSKTwoRouteTableAssociation:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      RouteTableId: !Ref 'PrivateRouteTable'
      SubnetId: !Ref 'PrivateSubnetMSKTwo'
  PrivateSubnetMSKThreeRouteTableAssociation:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      RouteTableId: !Ref 'PrivateRouteTable'
      SubnetId: !Ref 'PrivateSubnetMSKThree'
Outputs:
  VPCId: 
    Description: The ID of the VPC created
    Value: !Ref 'VPC'
    Export:
      Name: !Sub "${AWS::StackName}-VPCID"
  PublicSubnetCidr:
    Description: Public subnet CIDR address
    Value: !Ref 'PublicSubnetCidr'
    Export:
      Name: !Sub "${AWS::StackName}-PublicSubnetCidr"
  PublicSubnetOne: 
    Description: The ID of the public subnet created
    Value: !Ref 'PublicSubnetOne'
    Export:
      Name: !Sub "${AWS::StackName}-PublicSubnetOne"
  PrivateSubnetMSKOne: 
    Description: The ID of private subnet one created
    Value: !Ref 'PrivateSubnetMSKOne'
    Export:
      Name: !Sub "${AWS::StackName}-PrivateSubnetMSKOne"
  PrivateSubnetMSKTwo: 
    Description: The ID of private subnet two created
    Value: !Ref 'PrivateSubnetMSKTwo'
    Export:
      Name: !Sub "${AWS::StackName}-PrivateSubnetMSKTwo"
  PrivateSubnetMSKThree: 
    Description: The ID of private subnet three created
    Value: !Ref 'PrivateSubnetMSKThree'
    Export:
      Name: !Sub "${AWS::StackName}-PrivateSubnetMSKThree"
  VPCStackName: 
    Description: The name of the VPC Stack
    Value: !Ref 'AWS::StackName'
    Export:
      Name: !Sub "${AWS::StackName}-VPCStackName"