AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: SAM Template for Lambda Managed Instances Example

# This template deploys three Lambda functions to Lambda Managed Instances
# using a pre-existing capacity provider.

Parameters:
  CapacityProviderArn:
    Type: String
    Default: arn:aws:lambda:us-west-2:${AWS::AccountId}:capacity-provider:MyCapacityProvider  # TODO : CHANGE The Name!
    Description: ARN of the existing capacity provider for Lambda Managed Instances

Globals:
  Function:
    Handler: swift.bootstrap  # ignored by the Swift runtime
    Runtime: provided.al2023
    Architectures:
      - arm64
    Timeout: 15
    CapacityProviderConfig:
      Arn: !Ref CapacityProviderArn
      PerExecutionEnvironmentMaxConcurrency: 8
    Environment:
      Variables:
        LOG_LEVEL: trace

Resources:
  # HelloJSON Function - JSON input/output with structured data
  HelloJSONFunction:
    Type: AWS::Serverless::Function
    Properties:
      CodeUri: .build/plugins/AWSLambdaPackager/outputs/AWSLambdaPackager/HelloJSON/HelloJSON.zip
      FunctionName: !Sub "${AWS::StackName}-HelloJSON"

  # Streaming Function - Demonstrates response streaming capabilities
  StreamingFunction:
    Type: AWS::Serverless::Function
    Properties:
      CodeUri: .build/plugins/AWSLambdaPackager/outputs/AWSLambdaPackager/Streaming/Streaming.zip
      FunctionName: !Sub "${AWS::StackName}-Streaming"
      Timeout: 60  # Longer timeout for streaming operations
      FunctionUrlConfig:
        AuthType: AWS_IAM
        InvokeMode: RESPONSE_STREAM

  # BackgroundTasks Function - Handles long-running background processing
  BackgroundTasksFunction:
    Type: AWS::Serverless::Function
    Properties:
      CodeUri: .build/plugins/AWSLambdaPackager/outputs/AWSLambdaPackager/BackgroundTasks/BackgroundTasks.zip
      FunctionName: !Sub "${AWS::StackName}-BackgroundTasks"
      Timeout: 300  # 5 minutes for background processing
      Environment:
        Variables:
          LOG_LEVEL: debug

Outputs:
  # Function URL for reference
  StreamingFunctionUrl:
    Description: Streaming Function URL
    Value: !GetAtt StreamingFunctionUrl.FunctionUrl

  # Function ARNs for reference
  HelloJSONFunctionArn:
    Description: "HelloJSON Function ARN"
    Value: !GetAtt HelloJSONFunction.Arn
    Export:
      Name: !Sub "${AWS::StackName}-HelloJSONArn"

  StreamingFunctionArn:
    Description: "Streaming Function ARN"
    Value: !GetAtt StreamingFunction.Arn
    Export:
      Name: !Sub "${AWS::StackName}-StreamingArn"

  BackgroundTasksFunctionArn:
    Description: "BackgroundTasks Function ARN"
    Value: !GetAtt BackgroundTasksFunction.Arn
    Export:
      Name: !Sub "${AWS::StackName}-BackgroundTasksArn"