AWSTemplateFormatVersion: '2010-09-09'
Description: >
  Create VPC resources for Canary Blue/Green Deployment on ECS.
  Uses CIDR blocks 192.168.10.0/24 192.168.20.0/24 for subnets.
  
Parameters:
  Name:
    Type: String

  VpcCIDR:
    Type: String

  Subnet1CIDR:
    Type: String

  Subnet2CIDR:
    Type: String


Resources:
  VPC:
    Type: AWS::EC2::VPC
    Properties:
      CidrBlock: !Ref VpcCIDR
      Tags:
        - Key: Name
          Value: !Ref Name

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

  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: !Ref Subnet1CIDR
      Tags:
        - Key: Name
          Value: !Sub ${Name} (Public)

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

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

  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:
  Subnets:
    Value: !Join [ ",", [ !Ref Subnet1, !Ref Subnet2 ] ]
  VpcId:
    Value: !Ref VPC