# Copyright 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
# SPDX-License-Identifier: MIT-0

AWSTemplateFormatVersion: '2010-09-09'
Description: 'Launches VPC, NATGateways, Endpoints, 4 Subnet Architecture'
Parameters:
  EnvironmentName:
    Description: Name of the VPC
    AllowedPattern: "[a-z0-9]*"
    Type: String
    ConstraintDescription : Must begin with a letter. Lower case letters.Can include numbers.
    MaxLength: 5
    Default: dev
Mappings:
  VpcMap:
    dev:
      VpcCIDR: 10.0.0.0/16
      Subnet1CIDR: 10.0.32.0/27
      Subnet2CIDR: 10.0.64.0/27
Resources:
  VPC:
    Type: AWS::EC2::VPC
    Properties:
      CidrBlock: !FindInMap [VpcMap,!Ref EnvironmentName,VpcCIDR]
      Tags:
        - Key: Name
          Value: !Ref EnvironmentName

  InternetGateway:
    Type: AWS::EC2::InternetGateway
    Properties:
      Tags:
        - Key: Name
          Value: !Ref EnvironmentName

  InternetGatewayAttachment:
    Type: AWS::EC2::VPCGatewayAttachment
    Properties:
      InternetGatewayId: !Ref InternetGateway
      VpcId: !Ref VPC

  Subnet1:
    Type: AWS::EC2::Subnet
    Properties:
      VpcId: !Ref VPC
      AvailabilityZone: !Select [ 0, !GetAZs '']
      MapPublicIpOnLaunch: true
      CidrBlock: !FindInMap [VpcMap,!Ref EnvironmentName,Subnet1CIDR]
      Tags:
        - Key: Name
          Value: !Sub ${EnvironmentName} (Public)

  Subnet2:
    Type: AWS::EC2::Subnet
    Properties:
      VpcId: !Ref VPC
      AvailabilityZone: !Select [ 1, !GetAZs '']
      MapPublicIpOnLaunch: true
      CidrBlock: !FindInMap [VpcMap,!Ref EnvironmentName,Subnet2CIDR]
      Tags:
        - Key: Name
          Value: !Sub ${EnvironmentName} (Public)

  RouteTable:
    Type: AWS::EC2::RouteTable
    Properties:
      VpcId: !Ref VPC
      Tags:
        - Key: Name
          Value: !Ref EnvironmentName

  DefaultRoute:
    Type: AWS::EC2::Route
    Properties:
      RouteTableId: !Ref RouteTable
      DestinationCidrBlock: 0.0.0.0/0
      GatewayId: !Ref InternetGateway

  Subnet1RouteTableAssociation:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      RouteTableId: !Ref RouteTable
      SubnetId: !Ref Subnet1

  Subnet2RouteTableAssociation:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      RouteTableId: !Ref RouteTable
      SubnetId: !Ref Subnet2

Outputs:
  Subnet1:
    Value: !Ref Subnet1
  Subnet2:
    Value: !Ref Subnet2
  VpcId:
    Value: !Ref VPC