Transform: AWS::Serverless-2016-10-31
Resources:
  IdempotencyTable:
    Type: AWS::DynamoDB::Table
    Properties:
      AttributeDefinitions:
        - AttributeName: id
          AttributeType: S
      KeySchema:
        - AttributeName: id
          KeyType: HASH
      TimeToLiveSpecification:
        AttributeName: expiration
        Enabled: true
      BillingMode: PAY_PER_REQUEST

  HelloWorldFunction:
    Type: AWS::Serverless::Function
    Properties:
      Runtime: python3.12
      Handler: app.py
      Policies:
        - Statement:
            - Sid: AllowDynamodbReadWrite
              Effect: Allow
              Action:
                - dynamodb:PutItem
                - dynamodb:GetItem
                - dynamodb:UpdateItem
                - dynamodb:DeleteItem
              Resource: !GetAtt IdempotencyTable.Arn
      Environment:
        Variables:
          IDEMPOTENCY_TABLE: !Ref IdempotencyTable