AWSTemplateFormatVersion: 2010-09-09
Description: >-
  This template creates an EC2 instance that installs a .NET application
  on launch.
Parameters:
  WindowsAMIId:
    Description: >-
        Use the below value to automatically look up the latest published
        AMI ID for Windows Server 2019, or supply your own.
    Type: AWS::SSM::Parameter::Value<AWS::EC2::Image::Id>
    Default: '/aws/service/ami-windows-latest/Windows_Server-2019-English-Core-Base'  
Resources:
  AppServerSecurityGroup:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupDescription: Enable HTTP and RDP
      SecurityGroupIngress:
        - IpProtocol: tcp
          FromPort: 80
          ToPort: 80
          CidrIp: 0.0.0.0/0
  AppServerEIP:
    Type: AWS::EC2::EIP
    Properties:
      InstanceId:
        Ref: AppServer
  AppServer:
    Type: AWS::EC2::Instance
    Properties:
      InstanceType: t3.micro
      ImageId: !Ref WindowsAMIId
      SecurityGroups: [!Ref AppServerSecurityGroup]
      UserData:
        Fn::Base64: !Sub |
          <powershell>
          $VerbosePreference = "Continue"
          try {
            # Download and install the ASP.NET Core Hosting Bundle
            mkdir C:\DotNet
            Invoke-WebRequest -UseBasicParsing -Uri 'https://download.visualstudio.microsoft.com/download/pr/9b9f4a6e-aef8-41e0-90db-bae1b0cf4e34/4ab93354cdff8991d91a9f40d022d450/dotnet-hosting-3.1.6-win.exe' -OutFile C:\DotNet\aspdotnet-3.1-installer.exe
            Start-Process -Wait C:\DotNet\aspdotnet-3.1-installer.exe -ArgumentList '/install','/quiet','/norestart'
            # Download and install our application
            mkdir C:\AppServer
            Invoke-WebRequest -UseBasicParsing -Uri 'http://s3.amazonaws.com/us-east-1.andyhoppatamazon.com/samples/ASPNETCoreDemo.zip' -OutFile C:\AppServer\ASPNETCoreDemo.zip
            Expand-Archive C:\AppServer\ASPNetCoreDemo.zip C:\AppServer\
            # Register and start our service
            New-Service ASPNetCoreDemo -BinaryPathName "C:\AppServer\ASPNETCoreDemo.exe --service --urls http://+:80"
            Start-Service ASPNetCoreDemo
            # Open the firewall to allow port 80
            netsh advfirewall firewall add rule name="ASPNetCoreDemo" dir=in action=allow protocol=TCP localport=80
            Write-Verbose "Signaling completion to WaitHandle"
            Invoke-WebRequest -UseBasicParsing -Method PUT -Body $( ConvertTo-Json @{ "Status" = "SUCCESS"; "UniqueId"=[System.Guid]::NewGuid(); "Data"="Instance initialized successfully." } ) -Uri "${ AppServerWaitHandle }"
          }
          catch {
            $itemName = $_.Exception.ItemName;
            $errorMessage = $_.Exception.Message;
            Write-Host "ERROR: $itemName - $errorMessage"
            Invoke-WebRequest -UseBasicParsing -Method PUT -Body $( ConvertTo-Json @{ "Status" = "FAILURE"; "UniqueId"=[System.Guid]::NewGuid(); "Data"=$errorMessage } ) -Uri "${ AppServerWaitHandle }"
          }
          </powershell>
  AppServerWaitHandle:
    Type: AWS::CloudFormation::WaitConditionHandle
  AppServerWaitCondition:
    Type: AWS::CloudFormation::WaitCondition
    DependsOn: AppServer
    Properties:
      Handle: !Ref AppServerWaitHandle
      Timeout: 600
Outputs:
  AppServerURL:
    Value: !Sub "http://${AppServerEIP}"
    Description: >-
      Application server URL.