# Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
# SPDX-License-Identifier: MIT-0

AWSTemplateFormatVersion: "2010-09-09"

Parameters:
  FileDescriptorBucketName:
    Type: String
    Description: Name of the bucket which will contain the protobuf file descriptor

Resources:
  FileDescriptorBucket:
    Type: AWS::S3::Bucket
    DeletionPolicy: Delete
    Properties:
      BucketName: !Ref FileDescriptorBucketName
      VersioningConfiguration:
        Status: Enabled
      BucketEncryption:
        ServerSideEncryptionConfiguration:
          - ServerSideEncryptionByDefault:
              SSEAlgorithm: AES256

  FileDescriptorBucketPolicy:
    Type: AWS::S3::BucketPolicy
    Properties:
      Bucket: !Ref FileDescriptorBucket
      PolicyDocument:
        Version: 2012-10-17
        Statement:
          - Action:
              - 's3:Get*'
            Effect: Allow
            Resource: !Join
              - ''
              - - 'arn:aws:s3:::'
                - !Ref FileDescriptorBucket
                - /*
            Principal:
              Service:
              - iot.amazonaws.com
          - Effect: Deny
            Principal: "*"
            Action: "*"
            Resource:
              - !Sub "arn:aws:s3:::${FileDescriptorBucketName}/*"
              - !Sub "arn:aws:s3:::${FileDescriptorBucketName}"
            Condition:
              Bool:
                aws:SecureTransport: false

  IoTCoreServiceRole:
    Type: AWS::IAM::Role
    Properties:
      RoleName: IoTCoreServiceSampleRole
      AssumeRolePolicyDocument:
        Version: "2012-10-17"
        Statement:
          - Effect: Allow
            Principal:
              Service:
                - iot.amazonaws.com
            Action:
              - 'sts:AssumeRole'
      Policies:
        - PolicyName: RepublishPolicy
          PolicyDocument:
            Version: "2012-10-17"
            Statement:
              - Effect: Allow
                Action: 'iot:Publish'
                Resource: !Sub arn:aws:iot:${AWS::Region}:${AWS::AccountId}:topic/test/telemetry_alerts

  ProtobufIoTCoreRule:
    Type: AWS::IoT::TopicRule
    Properties:
      RuleName: ProtobufAlertRule
      TopicRulePayload:
        Actions:
          - Republish:
              Qos: 1
              Topic: test/telemetry_alerts
              RoleArn: !GetAtt IoTCoreServiceRole.Arn
        AwsIotSqlVersion: "2016-03-23"
        Sql: !Sub |
          SELECT 
            VALUE decode(encode(*, 'base64'), "proto", "${FileDescriptorBucketName}", "msg/filedescriptor.desc", "msg", "Telemetry")
          FROM
            'test/telemetry_all'
          WHERE
            decode(encode(*, 'base64'), "proto", "${FileDescriptorBucketName}", "msg/filedescriptor.desc", "msg", "Telemetry").msgType = "MSGTYPE_ALERT"