AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: Serverless pattern - S3 -> Lambda -> Polly

# More info about Globals: https://github.com/awslabs/serverless-application-model/blob/master/docs/globals.rst
Globals:
  Function:
    Timeout: 120
    MemorySize: 128

Resources:
  TextToSpeechFunction:
    Type: AWS::Serverless::Function # More info about Function Resource: https://github.com/awslabs/serverless-application-model/blob/master/versions/2016-10-31.md#awsserverlessfunction
    Properties:
      CodeUri: src/
      Handler: app.lambda_handler
      Runtime: python3.9
      Events:
        S3Event:
          Type: S3
          Properties:
            Bucket: !Ref InputBucket
            Events: s3:ObjectCreated:*
      Policies:
        - AWSLambdaBasicExecutionRole
        - Version: '2012-10-17'
          Statement:
            - Effect: Allow
              Action: 
                - "polly:SynthesizeSpeech"
                - "polly:GetSpeechSynthesisTask"
                - "polly:GetLexicon"
                - "s3:GetObject"
                - "s3:PutObject"
              Resource: "*"
  InputBucket:
    Type: AWS::S3::Bucket
    Properties:
      BucketName: texttospeechinputbucket
  OutputBucket:
    Type: AWS::S3::Bucket
    Properties:
      BucketName: texttospeechoutputbucket

Outputs:
  TSOutputBucket:
    Description: "The bucket with the converted audio file"
    Value:
      Ref: OutputBucket