AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: Auto-transcriber and sentiment analyzer

Parameters:
  InputBucketName:
    Type: String
    Default: 'myTranscribeBucket'

Globals:
  Function:
    Timeout: 10

Resources:
  InputS3Bucket:
    Type: AWS::S3::Bucket
    Properties:
      BucketName: !Ref InputBucketName

  ResultsDDBtable:
    Type: AWS::DynamoDB::Table
    Properties:
      AttributeDefinitions:
      - AttributeName: partitionKey
        AttributeType: S
      KeySchema:
      - AttributeName: partitionKey
        KeyType: HASH
      BillingMode: PAY_PER_REQUEST

  SentimentFunction:
    Type: AWS::Serverless::Function 
    Properties:
      CodeUri: sentimentFunction/
      Handler: app.handler
      Runtime: nodejs12.x
      MemorySize: 128
      Environment:
        Variables:
          ddbTable: !Ref ResultsDDBtable      
      Policies:
        - DynamoDBCrudPolicy:
            TableName: !Ref ResultsDDBtable        
        - S3CrudPolicy:
            BucketName: !Ref InputBucketName
        - Statement:
          - Sid: comprehendDetectSentimentPolicy
            Effect: Allow
            Action:
            - comprehend:DetectSentiment
            Resource: '*'            
      Events:
        FileUpload:
          Type: S3
          Properties:
            Bucket: !Ref InputS3Bucket
            Events: s3:ObjectCreated:*
            Filter: 
              S3Key:
                Rules:
                  - Name: suffix
                    Value: '.json'              

  TranslatorFunction:
    Type: AWS::Serverless::Function 
    Properties:
      CodeUri: transcribeFunction/
      Handler: app.handler
      Runtime: nodejs12.x
      MemorySize: 128
      Policies:
        - S3CrudPolicy:
            BucketName: !Ref InputBucketName
        - Statement:
          - Effect: Allow
            Resource: '*'
            Action:
              - transcribe:StartTranscriptionJob
              - cloudwatch:GetMetricStatistics
              - cloudwatch:ListMetrics
      Events:
        FileUpload:
          Type: S3
          Properties:
            Bucket: !Ref InputS3Bucket
            Events: s3:ObjectCreated:*
            Filter: 
              S3Key:
                Rules:
                  - Name: suffix
                    Value: '.mp3'