AWSTemplateFormatVersion: "2010-09-09"
Description: Amazon S3 Find and Forget DDB Tables

Metadata:
  cfn-lint:
    config:
      ignore_checks:
        - W1001

Parameters:
  EnableBackups:
    Type: String
  RetainTables:
    Type: String

Conditions:
  ShouldNotRetainTables: !Equals [!Ref RetainTables, "false"]
  ShouldRetainTables: !Equals [!Ref RetainTables, "true"]

Resources:

  # DeletionPolicy and UpdateReplacePolicy need a String
  # https://github.com/aws-cloudformation/aws-cloudformation-coverage-roadmap/issues/162

  DeletionQueueTableNotRetain:
    Type: AWS::DynamoDB::Table
    Condition: ShouldNotRetainTables
    DeletionPolicy: Delete
    UpdateReplacePolicy: Delete
    Properties:
      StreamSpecification:
        StreamViewType: NEW_IMAGE
      AttributeDefinitions:
        -
          AttributeName: DeletionQueueItemId
          AttributeType: S
      KeySchema:
        -
          AttributeName: DeletionQueueItemId
          KeyType: HASH
      BillingMode: PAY_PER_REQUEST
      PointInTimeRecoverySpecification:
        PointInTimeRecoveryEnabled: !Ref EnableBackups
      SSESpecification:
        KMSMasterKeyId: alias/aws/dynamodb
        SSEEnabled: true
        SSEType: KMS

  DeletionQueueTableRetain:
    Type: AWS::DynamoDB::Table
    Condition: ShouldRetainTables
    DeletionPolicy: Retain
    UpdateReplacePolicy: Retain
    Properties:
      StreamSpecification:
        StreamViewType: NEW_IMAGE
      AttributeDefinitions:
        -
          AttributeName: DeletionQueueItemId
          AttributeType: S
      KeySchema:
        -
          AttributeName: DeletionQueueItemId
          KeyType: HASH
      BillingMode: PAY_PER_REQUEST
      PointInTimeRecoverySpecification:
        PointInTimeRecoveryEnabled: !Ref EnableBackups
      SSESpecification:
        KMSMasterKeyId: alias/aws/dynamodb
        SSEEnabled: true
        SSEType: KMS

  DataMapperTableNotRetain:
    Type: AWS::DynamoDB::Table
    Condition: ShouldNotRetainTables
    DeletionPolicy: Delete
    UpdateReplacePolicy: Delete
    Properties:
      AttributeDefinitions:
        -
          AttributeName: DataMapperId
          AttributeType: S
      KeySchema:
        -
          AttributeName: DataMapperId
          KeyType: HASH
      BillingMode: PAY_PER_REQUEST
      PointInTimeRecoverySpecification:
        PointInTimeRecoveryEnabled: !Ref EnableBackups
      SSESpecification:
        KMSMasterKeyId: alias/aws/dynamodb
        SSEEnabled: true
        SSEType: KMS

  DataMapperTableRetain:
    Type: AWS::DynamoDB::Table
    Condition: ShouldRetainTables
    DeletionPolicy: Retain
    UpdateReplacePolicy: Retain
    Properties:
      AttributeDefinitions:
        -
          AttributeName: DataMapperId
          AttributeType: S
      KeySchema:
        -
          AttributeName: DataMapperId
          KeyType: HASH
      BillingMode: PAY_PER_REQUEST
      PointInTimeRecoverySpecification:
        PointInTimeRecoveryEnabled: !Ref EnableBackups
      SSESpecification:
        KMSMasterKeyId: alias/aws/dynamodb
        SSEEnabled: true
        SSEType: KMS

  JobTableNotRetain:
    Type: AWS::DynamoDB::Table
    Condition: ShouldNotRetainTables
    DeletionPolicy: Delete
    UpdateReplacePolicy: Delete
    Properties:
      TimeToLiveSpecification:
        AttributeName: Expires
        Enabled: true
      StreamSpecification:
        StreamViewType: NEW_AND_OLD_IMAGES
      AttributeDefinitions:
        -
          AttributeName: Id
          AttributeType: S
        -
          AttributeName: Sk
          AttributeType: S
        -
          AttributeName: GSIBucket
          AttributeType: S
        -
          AttributeName: CreatedAt
          AttributeType: N
      KeySchema:
        -
          AttributeName: Id
          KeyType: HASH
        -
          AttributeName: Sk
          KeyType: RANGE
      BillingMode: PAY_PER_REQUEST
      GlobalSecondaryIndexes:
        -
          IndexName: Date-GSI
          KeySchema:
            -
              AttributeName: GSIBucket
              KeyType: HASH
            -
              AttributeName: CreatedAt
              KeyType: RANGE
          Projection:
            ProjectionType: ALL
      PointInTimeRecoverySpecification:
        PointInTimeRecoveryEnabled: !Ref EnableBackups
      SSESpecification:
        KMSMasterKeyId: alias/aws/dynamodb
        SSEEnabled: true
        SSEType: KMS

  JobTableRetain:
    Type: AWS::DynamoDB::Table
    Condition: ShouldRetainTables
    DeletionPolicy: Retain
    UpdateReplacePolicy: Retain
    Properties:
      TimeToLiveSpecification:
        AttributeName: Expires
        Enabled: true
      StreamSpecification:
        StreamViewType: NEW_AND_OLD_IMAGES
      AttributeDefinitions:
        -
          AttributeName: Id
          AttributeType: S
        -
          AttributeName: Sk
          AttributeType: S
        -
          AttributeName: GSIBucket
          AttributeType: S
        -
          AttributeName: CreatedAt
          AttributeType: N
      KeySchema:
        -
          AttributeName: Id
          KeyType: HASH
        -
          AttributeName: Sk
          KeyType: RANGE
      BillingMode: PAY_PER_REQUEST
      GlobalSecondaryIndexes:
        -
          IndexName: Date-GSI
          KeySchema:
            -
              AttributeName: GSIBucket
              KeyType: HASH
            -
              AttributeName: CreatedAt
              KeyType: RANGE
          Projection:
            ProjectionType: ALL
      PointInTimeRecoverySpecification:
        PointInTimeRecoveryEnabled: !Ref EnableBackups
      SSESpecification:
        KMSMasterKeyId: alias/aws/dynamodb
        SSEEnabled: true
        SSEType: KMS
          
Outputs:
  DeletionQueueTable:
    Value: !If
      - ShouldRetainTables
      - !Ref DeletionQueueTableRetain
      - !Ref DeletionQueueTableNotRetain
  DeletionQueueTableStreamArn:
    Value: !If
      - ShouldRetainTables
      - !GetAtt DeletionQueueTableRetain.StreamArn
      - !GetAtt DeletionQueueTableNotRetain.StreamArn
  DataMapperTable:
    Value: !If
      - ShouldRetainTables
      - !Ref DataMapperTableRetain
      - !Ref DataMapperTableNotRetain
  JobTable:
    Value: !If
      - ShouldRetainTables
      - !Ref JobTableRetain
      - !Ref JobTableNotRetain
  JobTableDateGSI:
    Value: Date-GSI
  JobTableStreamArn:
    Value: !If
      - ShouldRetainTables
      - !GetAtt JobTableRetain.StreamArn
      - !GetAtt JobTableNotRetain.StreamArn