---
AWSTemplateFormatVersion: "2010-09-09"
Description: Lambda function to process data stream from Activity table and
  update User Aggregate table

Parameters:
  APIName:
    Type: String
    Description: "Name of the API, to generate names for resources"
    MinLength: 3
    MaxLength: 20
    AllowedPattern: '^[a-zA-Z][a-zA-Z0-9_]*$'
    Default: caltrack

  S3BucketName:
    AllowedPattern: ^[0-9a-zA-Z]+([0-9a-zA-Z-]*[0-9a-zA-Z])*$
    ConstraintDescription: S3 bucket name can include numbers, lowercase
      letters, uppercase letters, and hyphens (-). It cannot start or end with a hyphen
      (-).
    Description: "S3 bucket where all the templates, assets and other artifacts are \
      \ stored. The bucket name can include numbers, lowercase letters, uppercase \
      \ letters, and hyphens, but should not start or end with a hyphen."
    Type: String
    Default: reinvent-calorie-tracker-workshop
    
  S3KeyPrefix:
    AllowedPattern: ^[0-9a-zA-Z-_/]*$
    ConstraintDescription: "Key prefix can include numbers, lowercase letters, uppercase letters, hyphens (-), and forward slash (/)."
    Description: "S3 key prefix for the workshop assets. Key prefix can include numbers, lowercase letters, uppercase letters, hyphens (-), underscore (_) and forward slash (/)."
    Type: String
    Default: 2_APPSYNC/

Resources:
  DynamoDBStack:
    Type: AWS::CloudFormation::Stack
    Properties:
      TemplateURL: !Sub 'https://${S3BucketName}.s3.amazonaws.com/${S3KeyPrefix}templates/dynamodb-tables.yaml'
      Parameters:
        APIName: !Ref 'APIName'

  LambdaFunctionStack:
    Type: AWS::CloudFormation::Stack
    DependsOn:
      - DynamoDBStack
    Properties:
      TemplateURL: !Sub 'https://${S3BucketName}.s3.amazonaws.com/${S3KeyPrefix}templates/lambda.yaml'
      Parameters:
        DynamoDBActivityTableArn: !GetAtt 'DynamoDBStack.Outputs.ActivityTableArn'
        DynamoDBActivityTableStreamArn: !GetAtt 'DynamoDBStack.Outputs.ActivityTableStreamARN'
        DynamoDBUserCaloriesAggTableName: !GetAtt 'DynamoDBStack.Outputs.UserCaloriesAggregateTable'
        DynamoDBUserCaloriesAggTableArn: !GetAtt 'DynamoDBStack.Outputs.UserCaloriesAggregateTableArn'

  AppSyncAPIStack:
    Type: AWS::CloudFormation::Stack
    DependsOn:
      - DynamoDBStack
    Properties:
      TemplateURL: !Sub 'https://${S3BucketName}.s3.amazonaws.com/${S3KeyPrefix}templates/appsync.yaml'
      Parameters:
        APIName: !Ref 'APIName'
        DynamoDBUserTableName: !GetAtt 'DynamoDBStack.Outputs.UserTable'
        DynamoDBUserTableArn: !GetAtt 'DynamoDBStack.Outputs.UserTableArn'
        DynamoDBActivityTableName: !GetAtt 'DynamoDBStack.Outputs.ActivityTable'
        DynamoDBActivityTableArn: !GetAtt 'DynamoDBStack.Outputs.ActivityTableArn'
        DynamoDBActivityCategoryTableName: !GetAtt 'DynamoDBStack.Outputs.ActivityCategoryTable'
        DynamoDBActivityCategoryTableArn: !GetAtt 'DynamoDBStack.Outputs.ActivityCategoryTableArn'
        DynamoDBUserCaloriesAggTableName: !GetAtt 'DynamoDBStack.Outputs.UserCaloriesAggregateTable'
        DynamoDBUserCaloriesAggTableArn: !GetAtt 'DynamoDBStack.Outputs.UserCaloriesAggregateTableArn'
        GraphQlSchemaS3DescriptionLocation: !Sub 's3://${S3BucketName}/${S3KeyPrefix}assets/schema.graphql'

  AppSyncResolverStack:
    Type: AWS::CloudFormation::Stack
    DependsOn:
      - DynamoDBStack
      - AppSyncAPIStack
    Properties:
      TemplateURL: !Sub 'https://${S3BucketName}.s3.amazonaws.com/${S3KeyPrefix}templates/appsync-resolvers.yaml'
      Parameters:
        AppSyncAPIId: !GetAtt 'AppSyncAPIStack.Outputs.AppSyncApiId'
        UserTableDataSourceName: !GetAtt 'AppSyncAPIStack.Outputs.AppSyncUserTableDataSourceName'
        ActivityTableDataSourceName: !GetAtt 'AppSyncAPIStack.Outputs.AppSyncActivityTableDataSourceName'
        ActivityCategoryTableDataSourceName: !GetAtt 'AppSyncAPIStack.Outputs.AppSyncActivityCategoryTableDataSourceName'
        UserAggTableDataSourceName: !GetAtt 'AppSyncAPIStack.Outputs.AppSyncUserAggTableDataSourceName'

Outputs:
  AppSyncApp:
    Value:
      !Join
      - ''
      - - 'https://console.aws.amazon.com/appsync/home?region='
        - !Sub '${AWS::Region}'
        - '#/'
        - !GetAtt 'AppSyncAPIStack.Outputs.AppSyncApiId'
        - '/v1/home'
    Description: AWS console URL to AppSync application