---
AWSTemplateFormatVersion: 2010-09-09

Description: Creates New VPC

Conditions:

  MoreThan2AZ:
    !Or [
      !Equals [ !Ref 'AWS::Region', us-east-1 ],
      !Equals [ !Ref 'AWS::Region', us-east-2 ],
      !Equals [ !Ref 'AWS::Region', us-west-2 ],
      !Equals [ !Ref 'AWS::Region', eu-west-1 ],
      !Equals [ !Ref 'AWS::Region', sa-east-1 ],
      !Equals [ !Ref 'AWS::Region', ap-northeast-1 ],
      !Equals [ !Ref 'AWS::Region', ap-southeast-2 ]
    ]

Parameters:
  
  VpcCidr:
    AllowedPattern: ^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])(\/([0-9]|[1-2][0-9]|3[0-2]))$
    Description: The CIDR IP range of the VPC.
    Type: String
    Default: 172.16.0.0/16
  
  PrivateSubnet0Cidr:
    Description: Please enter the IP range (CIDR notation) for the PRIVATE subnet in the first Availability Zone
    Type: String
    Default: 172.16.1.0/24

  PrivateSubnet1Cidr:
    Description: Please enter the IP range (CIDR notation) for the PRIVATE subnet in the second Availability Zone
    Type: String
    Default: 172.16.2.0/24

  PublicSubnet0Cidr:
    Description: Please enter the IP range (CIDR notation) for the PUBLIC subnet in the first Availability Zone
    Type: String
    Default: 172.16.3.0/24

  PublicSubnet1Cidr:
    Description: Please enter the IP range (CIDR notation) for the PUBLIC subnet in the second Availability Zone
    Type: String
    Default: 172.16.4.0/24

Resources:

  Vpc:
    Type: AWS::EC2::VPC
    Properties:
      CidrBlock: !Ref VpcCidr
      EnableDnsHostnames: true
      EnableDnsSupport: true
      Tags:
        - Key: Name
          Value: !Join [ '', [ 'Vpc / ', !Ref 'AWS::StackName' ] ]
        - Key: for-use-with-amazon-emr-managed-policies
          Value: true

  InternetGateway:
    Type: AWS::EC2::InternetGateway
    Properties:
      Tags:
        - Key: Name
          Value: !Join [ '', [ 'InternetGateway / ', !Ref 'AWS::StackName' ] ]

  AttachInternetGateway:
    Type: AWS::EC2::VPCGatewayAttachment
    Properties:
      InternetGatewayId: !Ref InternetGateway
      VpcId: !Ref Vpc

  PublicSubnet0:
    Type: AWS::EC2::Subnet
    Properties:
      AvailabilityZone: !Select [ 0, !GetAZs '' ]
      CidrBlock: !Ref PublicSubnet0Cidr
      MapPublicIpOnLaunch: true
      Tags:
        - Key: Name
          Value: !Join [ '', [ 'PublicSubnet0 / ', !Ref 'AWS::StackName' ] ]
        - Key: SubnetType
          Value: Public
        - Key: "kubernetes.io/role/elb"
          Value: "1"
        - Key: for-use-with-amazon-emr-managed-policies
          Value: true
      VpcId: !Ref Vpc

  PublicSubnet1:
    Type: AWS::EC2::Subnet
    Properties:
      AvailabilityZone: !Select [ 1, !GetAZs '' ]
      CidrBlock: !Ref PublicSubnet1Cidr
      MapPublicIpOnLaunch: true
      Tags:
        - Key: Name
          Value: !Join [ '', [ 'PublicSubnet1 / ', !Ref 'AWS::StackName' ] ]
        - Key: SubnetType
          Value: Public
        - Key: "kubernetes.io/role/elb"
          Value: "1"
        - Key: for-use-with-amazon-emr-managed-policies
          Value: true
      VpcId: !Ref Vpc

  PublicRoute:
    Type: AWS::EC2::Route
    DependsOn: AttachInternetGateway
    Properties:
      RouteTableId: !Ref PublicRouteTable
      DestinationCidrBlock: 0.0.0.0/0
      GatewayId: !Ref InternetGateway

  PublicRouteTable:
    Type: AWS::EC2::RouteTable
    Properties:
      Tags:
        - Key: Name
          Value: !Join [ '', [ 'PublicRouteTable / ', !Ref 'AWS::StackName' ] ]
        - Key: Network
          Value: Public
      VpcId: !Ref Vpc

  PublicRouteTableAssociation0:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      SubnetId: !Ref PublicSubnet0
      RouteTableId: !Ref PublicRouteTable

  PublicRouteTableAssociation1:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      SubnetId: !Ref PublicSubnet1
      RouteTableId: !Ref PublicRouteTable

  NatEIP0:
    Type: AWS::EC2::EIP
    Properties:
      Domain: vpc 
  
  NatGateway0:
    Type: AWS::EC2::NatGateway
    DependsOn: AttachInternetGateway
    Properties:
      AllocationId: !GetAtt NatEIP0.AllocationId
      SubnetId: !Ref PublicSubnet0

  NatRouteTable0:
    Type: AWS::EC2::RouteTable
    Properties: 
      VpcId: !Ref Vpc 
      Tags:
        - Key: Name 
          Value: !Join [ '', [ 'NatRouteTable0 / ', !Ref 'AWS::StackName' ] ]
        - Key: Network
          Value: Public

  NatRoute0:
    Type: AWS::EC2::Route 
    Properties:
      RouteTableId: !Ref NatRouteTable0
      DestinationCidrBlock: 0.0.0.0/0
      NatGatewayId: !Ref NatGateway0
  
  PrivateSubnet0:
    Type: AWS::EC2::Subnet
    Properties:
      AvailabilityZone: !Select [0, !GetAZs '' ]
      CidrBlock: !Ref PrivateSubnet0Cidr
      MapPublicIpOnLaunch: false
      Tags:
        - Key: Name
          Value: !Join [ '', [ 'PrivateSubnet0 / ', !Ref 'AWS::StackName' ] ]
        - Key: SubnetType
          Value: Private
        - Key: "kubernetes.io/role/internal-elb"
          Value: "1"
        - Key: for-use-with-amazon-emr-managed-policies
          Value: true
      VpcId: !Ref Vpc

  PrivateSubnet1:
    Type: AWS::EC2::Subnet
    Properties:
      AvailabilityZone: !Select [1, !GetAZs '' ]
      CidrBlock: !Ref PrivateSubnet1Cidr
      MapPublicIpOnLaunch: false
      Tags:
        - Key: Name
          Value: !Join [ '', [ 'PrivateSubnet1 / ', !Ref 'AWS::StackName' ] ]
        - Key: SubnetType
          Value: Private
        - Key: "kubernetes.io/role/internal-elb"
          Value: "1"
        - Key: for-use-with-amazon-emr-managed-policies
          Value: true
      VpcId: !Ref Vpc

  PrivateSubnetRouteTableAssociation0:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      RouteTableId: !Ref NatRouteTable0
      SubnetId: !Ref PrivateSubnet0

  PrivateSubnetRouteTableAssociation1:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      RouteTableId: !Ref NatRouteTable0
      SubnetId: !Ref PrivateSubnet1

Outputs:
  
  Vpc:
    Value: !Ref Vpc
  VpcCidr:
    Value: !Ref VpcCidr
  PublicSubnet0:
    Value: !Ref PublicSubnet0
  PublicSubnet0Cidr:
    Value: !Ref PublicSubnet0Cidr
  PublicSubnet1:
    Value: !Ref PublicSubnet1
  PublicSubnet1Cidr:
    Value: !Ref PublicSubnet1Cidr
  PrivateSubnet0:
    Value: !Ref PrivateSubnet0
  PrivateSubnet0Cidr:
    Value: !Ref PrivateSubnet0Cidr
  PrivateSubnet1:
    Value: !Ref PrivateSubnet1
  PrivateSubnet1Cidr:
    Value: !Ref PrivateSubnet1Cidr