AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: >
  Go-HttpBin-Zip

  Sample SAM Template for Go-HttpBin-Zip

Parameters:
  Subnets:
    Type: AWS::SSM::Parameter::Value<List<AWS::EC2::Subnet::Id>>
    Default: /lambda-web-adapter/e2e/subnets
  VpcId:
    Type: AWS::SSM::Parameter::Value<AWS::EC2::VPC::Id>
    Default: /lambda-web-adapter/e2e/vpcid
  CertificateArn:
    Type: AWS::SSM::Parameter::Value<String>
    Default: /lambda-web-adapter/e2e/cert
  Route53HostedZone:
    Type: AWS::SSM::Parameter::Value<String>
    Default: /lambda-web-adapter/e2e/hostedzone
  Route53HostedZoneId:
    Type: AWS::SSM::Parameter::Value<String>
    Default: /lambda-web-adapter/e2e/hostedzoneid
  AdapterLayerArn:
    Type: AWS::SSM::Parameter::Value<String>
    Default: /lambda-web-adapter/layer/x86_64/latest

Globals:
  Function:
    Timeout: 10

Resources:
  RestApi:
    Type: AWS::Serverless::Api
    Properties:
      StageName: Prod
      BinaryMediaTypes:
        - '*~1*'
      Domain:
        CertificateArn: !Ref CertificateArn
        DomainName: !Sub httpbin-rest-zip.${Route53HostedZone}
        EndpointConfiguration: REGIONAL
        Route53:
          HostedZoneId: !Ref Route53HostedZoneId
      EndpointConfiguration:
        Type: REGIONAL

  HttpApi:
    Type: AWS::Serverless::HttpApi
    Properties:
      Domain:
        CertificateArn: !Ref CertificateArn
        DomainName: !Sub httpbin-http-zip.${Route53HostedZone}
        Route53:
          HostedZoneId: !Ref Route53HostedZoneId

  HttpBinFunction:
    Type: AWS::Serverless::Function
    Properties:
      CodeUri: ./app
      Handler: bootstrap
      Runtime: provided.al2
      MemorySize: 256
      Environment:
        Variables:
          AWS_LWA_ENABLE_COMPRESSION: 'true'
      Layers:
        - !Ref AdapterLayerArn
      Events:
        HttpAPIEvent:
          Type: HttpApi
          Properties:
            ApiId: !Ref HttpApi
        RestAPIRoot:
          Type: Api
          Properties:
            Path: /
            Method: ANY
            RestApiId: !Ref RestApi
        RestAPIProxy:
          Type: Api
          Properties:
            Path: /{proxy+}
            Method: ANY
            RestApiId: !Ref RestApi
      FunctionUrlConfig:
        AuthType: AWS_IAM
    Metadata:
      BuildMethod: makefile

  LoadBalancerSecurityGroup:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupDescription: Allow http to client host
      VpcId: !Ref VpcId
      SecurityGroupIngress:
        - IpProtocol: tcp
          FromPort: 443
          ToPort: 443
          CidrIp: 0.0.0.0/0

  LoadBalancer:
    Type: AWS::ElasticLoadBalancingV2::LoadBalancer
    Properties:
      Scheme: internet-facing
      Subnets: !Ref Subnets
      SecurityGroups:
        - !Ref LoadBalancerSecurityGroup

  HttpBinFunctionInvokePermission:
    Type: AWS::Lambda::Permission
    Properties:
      FunctionName: !GetAtt HttpBinFunction.Arn
      Action: 'lambda:InvokeFunction'
      Principal: elasticloadbalancing.amazonaws.com

  TargetGroup:
    Type: AWS::ElasticLoadBalancingV2::TargetGroup
    DependsOn: HttpBinFunctionInvokePermission
    Properties:
      TargetType: lambda
      Targets:
        - Id: !GetAtt HttpBinFunction.Arn

  HttpsListener:
    Type: 'AWS::ElasticLoadBalancingV2::Listener'
    Properties:
      Certificates:
        - CertificateArn: !Ref CertificateArn
      DefaultActions:
        - TargetGroupArn: !Ref TargetGroup
          Type: forward
      LoadBalancerArn: !Ref LoadBalancer
      Port: 443
      Protocol: HTTPS

  AlbDNSRecord:
    Type: AWS::Route53::RecordSet
    Properties:
      HostedZoneId : !Ref Route53HostedZoneId
      Name: !Sub httpbin-alb-zip.${Route53HostedZone}
      AliasTarget:
        DNSName: !GetAtt LoadBalancer.DNSName
        HostedZoneId: !GetAtt LoadBalancer.CanonicalHostedZoneID
      Type: A

  RestApiEndpoint:
    Type: AWS::SSM::Parameter
    Properties:
      Name: /lambda-web-adapter/e2e/httpbin/zip/rest-api-endpoint
      Description: 'Rest API Endpoint for HttpBin function'
      Type: String
      Value: !Sub "https://httpbin-rest-zip.${Route53HostedZone}/"

  HttpApiEndpoint:
    Type: AWS::SSM::Parameter
    Properties:
      Name: /lambda-web-adapter/e2e/httpbin/zip/http-api-endpoint
      Description: 'Http API Endpoint for HttpBin function'
      Type: String
      Value: !Sub "https://httpbin-http-zip.${Route53HostedZone}/"

  AlbEndpoint:
    Type: AWS::SSM::Parameter
    Properties:
      Name: /lambda-web-adapter/e2e/httpbin/zip/alb-endpoint
      Description: 'ALB Endpoint for HttpBin function'
      Type: String
      Value: !Sub "https://${AlbDNSRecord}/"

  FunctionUrl:
    Type: AWS::SSM::Parameter
    Properties:
      Name: /lambda-web-adapter/e2e/httpbin/zip/function-url
      Description: 'Function URL for HttpBin function'
      Type: String
      Value: !GetAtt HttpBinFunctionUrl.FunctionUrl

Outputs:
  HttpBinHttpApi:
    Description: "API Gateway Http API endpoint URL for default stage for HttpBin function"
    Value: !Sub "https://httpbin-http-zip.${Route53HostedZone}/"

  HttpBinRestApi:
    Description: "API Gateway Rest API endpoint URL for Prod stage for HttpBin function"
    Value: !Sub "https://httpbin-rest-zip.${Route53HostedZone}/"

  HttpBinAlbDNS:
    Description: "Application Load Balancer for HttpBin function"
    Value: !Sub "https://${AlbDNSRecord}/"

  HttpBinFunctionUrl:
    Description: "Function URL for HttpBin function"
    Value: !GetAtt HttpBinFunctionUrl.FunctionUrl