Transform: AWS::Serverless-2016-10-31

Globals:
  Function:
    Runtime: nodejs16.x
    Architectures: ["arm64"]
    Timeout: 29
    MemorySize: 1024
    Environment:
      Variables:
        AWS_NODEJS_CONNECTION_REUSE_ENABLED: 1

Resources:
##########################################################################
#   IOT                                                                  #
##########################################################################
  IOTRealtime:
    Type: "AWS::IoT::Thing"
    Properties:
      ThingName: !Sub ${AWS::StackName}-iot
      AttributePayload:
        Attributes: {}

  GetIoTEndpoint:
    Type: 'AWS::Serverless::Function'
    Properties:
      FunctionName: !Sub ${AWS::StackName}-GetIoTEndpoint
      Handler: GetIoTEndpoint.handler
      CodeUri: ./cf-customResource/
      Policies:
        - Version: '2012-10-17'
          Statement:
          - Effect: Allow
            Action:
              - iot:DescribeEndpoint
            Resource:
              - '*'
  IotEndpoint:
    Type: 'Custom::IotEndpoint'
    Properties:
      ServiceToken: !GetAtt GetIoTEndpoint.Arn

  IotRulesRole:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument: 
        Version: "2012-10-17"
        Statement: 
          - Effect: "Allow"
            Principal: 
              Service: 
                - "iot.amazonaws.com"
            Action: 
              - "sts:AssumeRole"
      Path: "/service-role/"
      ManagedPolicyArns:
        - "arn:aws:iam::aws:policy/service-role/AWSIoTRuleActions"

  IoTThingPolicy:
    Type: AWS::IoT::Policy
    Properties: 
      PolicyDocument: {
        "Version": "2012-10-17",
        "Statement": [
          {
            "Effect": "Allow",
            "Action": "iot:*",
            "Resource": "*"
          }
        ]
      }

##########################################################################
#   Lambda Function                                                      #
##########################################################################
  LambdaFuncton:
    Type: AWS::Serverless::Function
    Properties:
      Description: !Sub
        - Stack ${AWS::StackName} Function ${ResourceName}
        - ResourceName: MainFunction
      CodeUri: src
      Handler: handler.handler
      Environment:
        Variables:
          IOT_DATA_ENDPOINT: !GetAtt IotEndpoint.IotEndpointAddress
          IOT_TOPIC: !Ref IOTRealtime
      Policies:
        - Statement:
          - Effect: Allow
            Resource: 'arn:aws:iot:*'
            Action:
              - iot:Connect
              - iot:Publish
    Metadata:
      BuildMethod: esbuild
      BuildProperties:
        External: 
          - aws-sdk
        Minify: true
        Target: "es2020"
        Sourcemap: false
        EntryPoints: 
          - handler.ts

##########################################################################
#   OUTPUTS                                                              #
##########################################################################
Outputs:
  LambdaFuncton:
    Value: !Ref LambdaFuncton
    Description: Lambda Function Name