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# Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
# SPDX-License-Identifier: MIT-0
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AWSTemplateFormatVersion: 2010-09-09
Description:
  This template creates an IAM role to delete the GuardDuty detector within each account and region. - 'guardduty_org' solution in the repo,
  https://github.com/aws-samples/aws-security-reference-architecture-examples (sra-1ssgnse4k)

Metadata:
  SRA:
    Version: 1.1
    Order: 2
  AWS::CloudFormation::Interface:
    ParameterGroups:
      - Label:
          default: General Properties
        Parameters:
          - pSRASolutionName

      - Label:
          default: Role Properties
        Parameters:
          - pDeleteDetectorRoleName
          - pManagementAccountId
          - pGuardDutyOrgLambdaRoleName

    ParameterLabels:
      pDeleteDetectorRoleName:
        default: Delete Detector Role Name
      pManagementAccountId:
        default: Organization Management Account ID
      pGuardDutyOrgLambdaRoleName:
        default: GuardDuty Lambda Role Name
      pSRASolutionName:
        default: SRA Solution Name

Parameters:
  pDeleteDetectorRoleName:
    AllowedPattern: '^[\w+=,.@-]{1,64}$'
    ConstraintDescription: Max 64 alphanumeric characters. Also special characters supported [+, =, ., @, -]
    Default: sra-guardduty-delete-detector
    Description: Delete Detector IAM Role Name
    Type: String
  pGuardDutyOrgLambdaRoleName:
    AllowedPattern: '^[\w+=,.@-]{1,64}$'
    ConstraintDescription: Max 64 alphanumeric characters. Also special characters supported [+, =, ., @, -]
    Default: sra-guardduty-org-lambda
    Description: Lambda Role Name
    Type: String
  pManagementAccountId:
    AllowedPattern: '^\d{12}$'
    ConstraintDescription: Must be 12 digits
    Description: Organization Management Account ID
    Type: String
  pSRASolutionName:
    AllowedValues: [sra-guardduty-org]
    Default: sra-guardduty-org
    Description: The SRA solution name. The default value is the folder name of the solution
    Type: String

Resources:
  rDeleteDetectorRole:
    Type: AWS::IAM::Role
    Metadata:
      cfn_nag:
        rules_to_suppress:
          - id: W11
            reason: Actions require * in resource
          - id: W28
            reason: Explicit role name provided
    Properties:
      RoleName: !Ref pDeleteDetectorRoleName
      AssumeRolePolicyDocument:
        Statement:
          - Action: sts:AssumeRole
            Condition:
              StringEquals:
                aws:PrincipalArn:
                  - !Sub arn:${AWS::Partition}:iam::${pManagementAccountId}:role/${pGuardDutyOrgLambdaRoleName}
            Effect: Allow
            Principal:
              AWS:
                - !Sub arn:${AWS::Partition}:iam::${pManagementAccountId}:root
        Version: 2012-10-17
      Path: '/'
      Policies:
        - PolicyName: sra-guardduty-org-policy-guardduty-delete
          PolicyDocument:
            Version: 2012-10-17
            Statement:
              - Sid: GuardDutyNoResource
                Effect: Allow
                Action: guardduty:ListDetectors
                Resource: '*'

              - Sid: GuardDutyWithResource
                Effect: Allow
                Action: guardduty:DeleteDetector
                Resource: !Sub arn:${AWS::Partition}:guardduty:*:${AWS::AccountId}:detector/*
      Tags:
        - Key: sra-solution
          Value: !Ref pSRASolutionName