AWSTemplateFormatVersion: "2010-09-09"
Transform: AWS::Serverless-2016-10-31
Description: >
  comparefaces

  Sample SAM Template for comparefaces

Resources:
  CompareFacesStateMachine:
    Type: AWS::Serverless::StateMachine # More info about State Machine Resource: https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/sam-resource-statemachine.html
    Properties:
      DefinitionUri: statemachine/compareFacesStateMachine.asl.json
      DefinitionSubstitutions:
        GetTargetImagesFunctionArn: !GetAtt GetTargetImagesFunction.Arn
        CompareImagesFunctionArn: !GetAtt CompareImagesFunction.Arn
        DDBPutItem: !Sub arn:${AWS::Partition}:states:::dynamodb:putItem
        DDBTable: !Ref FaceComparisonTable
        ProcessedBucketName: !Ref ProcessedBucket
        UploadBucketName: !Ref UploadBucket
      Events:
        S3ObjectCreateRule:
          Type: EventBridgeRule  # More info about Schedule Event Source: https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/sam-property-statemachine-schedule.html
          Properties:
            Pattern:
              source:
                - aws.s3              
              detail-type:
                - Object Created
              detail:               
                bucket:
                  name:
                    - !Ref UploadBucket                 
            
      Policies: # Find out more about SAM policy templates: https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/serverless-policy-templates.html
        - LambdaInvokePolicy:
            FunctionName: !Ref GetTargetImagesFunction
        - LambdaInvokePolicy:
            FunctionName: !Ref CompareImagesFunction
        - DynamoDBWritePolicy:
            TableName: !Ref FaceComparisonTable
        - S3CrudPolicy:
            BucketName: !Ref UploadBucket
        - S3WritePolicy:
            BucketName: !Ref ProcessedBucket

  GetTargetImagesFunction:
    Type: AWS::Serverless::Function # More info about Function Resource: https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/sam-resource-function.html
    Properties:
      CodeUri: ./functions/GetTargetImages/
      Handler: GetTargetImages::GetTargetImages.Function::FunctionHandler
      Runtime: dotnet6
      Timeout: 900
      Architectures:
        - x86_64
      Policies:
        - S3ReadPolicy:
            BucketName: photos-target-images
         

  CompareImagesFunction:
    Type: AWS::Serverless::Function
    Properties:
      CodeUri: ./functions/CompareImages/
      Handler: CompareImages::CompareImages.Function::FunctionHandler
      Runtime: dotnet6
      Timeout: 900
      Architectures:
        - x86_64
      Policies:
        - RekognitionNoDataAccessPolicy: 
            CollectionId: 1
        - S3ReadPolicy:
            BucketName: photos-source-images
        - S3ReadPolicy:
            BucketName: photos-target-images

  FaceComparisonTable:
    Type: AWS::DynamoDB::Table # More info about SimpleTable Resource: https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/sam-resource-simpletable.html
    Properties:
      AttributeDefinitions:
        -
          AttributeName: "SourceImage"
          AttributeType: "S"
        -
          AttributeName: "TargetImage"
          AttributeType: "S"
      KeySchema:
        - 
          AttributeName: "SourceImage"
          KeyType: "HASH"
        - 
          AttributeName: "TargetImage"
          KeyType: "RANGE"
      ProvisionedThroughput:
        ReadCapacityUnits: 1
        WriteCapacityUnits: 1

  UploadBucket:
    Type: AWS::S3::Bucket
    Properties:
      BucketName: photos-source-images
      NotificationConfiguration:
        EventBridgeConfiguration:
          EventBridgeEnabled: true

  ProcessedBucket:
    Type: AWS::S3::Bucket
    Properties:
      BucketName: photos-source-images-processed


Outputs:
  # https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/sam-specification-generated-resources.html
  CompareFacesStateMachineArn:
    Description: "Face Comparison State machine ARN"
    Value: !Ref CompareFacesStateMachine
  
  CompareFacesStateMachineRoleArn:
    Description: "IAM Role created for Face Comparison State machine based on the specified SAM Policy Templates"
    Value: !GetAtt CompareFacesStateMachineRole.Arn