AWSTemplateFormatVersion: '2010-09-09'
Description: AWS Lambda + Amazon API Gateway

Resources:
  # ==================== ROL IAM ====================
  LambdaExecutionRole:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument:
        Version: '2012-10-17'
        Statement:
          - Effect: Allow
            Principal:
              Service: lambda.amazonaws.com
            Action: sts:AssumeRole
      ManagedPolicyArns:
        - arn:aws:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole
      Policies:
        - PolicyName: CloudWatchLogsPolicy
          PolicyDocument:
            Version: '2012-10-17'
            Statement:
              - Effect: Allow
                Action:
                  - logs:CreateLogGroup
                  - logs:CreateLogStream
                  - logs:PutLogEvents
                Resource: "*"

  # ==================== FUNCIÓN LAMBDA ====================
  MyLambdaWithLogs:
    Type: AWS::Lambda::Function
    Properties:
      FunctionName: LambdaWithLogs-Python
      Runtime: python3.12
      Role: !GetAtt LambdaExecutionRole.Arn
      Handler: index.lambda_handler
      Timeout: 30
      Code:
        ZipFile: |
          import json
          import logging

          # Configuración básica de logging
          logger = logging.getLogger()
          logger.setLevel(logging.INFO)

          def lambda_handler(event, context):
              logger.info("=== Inicio de la función Lambda ===")
              logger.info(f"Request ID: {context.aws_request_id}")
              logger.info(f"Evento recibido: {json.dumps(event, default=str)}")
              
              try:
                  # Simulamos posible error para demostración
                  if "error" in event.get("queryStringParameters", {}):
                      raise ValueError("Error simulado solicitado por el usuario")
                  
                  response_body = {
                      "mensaje": "¡La función se ejecutó correctamente!",
                      "version": "Día 11",
                      "request_id": context.aws_request_id,
                      "timestamp": context.get_remaining_time_in_millis()
                  }
                  
                  logger.info("Función ejecutada exitosamente")
                  return {
                      "statusCode": 200,
                      "headers": {
                          "Content-Type": "application/json",
                          "Access-Control-Allow-Origin": "*"
                      },
                      "body": json.dumps(response_body)
                  }
                  
              except Exception as e:
                  logger.error(f"Error en la función: {str(e)}", exc_info=True)
                  
                  return {
                      "statusCode": 500,
                      "headers": {
                          "Content-Type": "application/json",
                          "Access-Control-Allow-Origin": "*"
                      },
                      "body": json.dumps({
                          "mensaje": "Ocurrió un error interno",
                          "error": str(e)
                      })
                  }

  MiLogGroup:
      Type: AWS::Logs::LogGroup
      Properties:
        LogGroupName: !Sub "/aws/lambda/${MyLambdaWithLogs}"
        RetentionInDays: 30        # Opciones comunes: 7, 14, 30, 90, 365

Outputs:
  LambdaFunctionNamePython:
    Value: !Ref MyLambdaWithLogs
    Description: Nombre de la función Lambda en Python