Checks/Aws/Test-EfsNotPubliclyAccessible.ps1

function Test-EfsNotPubliclyAccessible {
    <#
    .SYNOPSIS
        EFS file system policy does not allow access to any client within the VPC

    .DESCRIPTION
        **Amazon EFS** file system policy is assessed for **public or VPC-wide access**. Policies with broad `Principal` values or that permit any client in the VPC without the `elasticfilesystem:AccessedViaMountTarget` condition are identified.
        
        *An absent or empty policy is treated as open to VPC clients.*

    .PARAMETER Check
        CIEMCheck object containing check metadata.
    #>

    [CmdletBinding()]
    [OutputType([PSCustomObject[]])]
    param(
        [Parameter(Mandatory)]
        [CIEMCheck]$Check
    )

    $ErrorActionPreference = 'Stop'

    # TODO: Implement check logic based on Prowler check: efs_not_publicly_accessible

    [CIEMScanResult]::Create($Check, 'MANUAL', 'This check requires manual implementation. See Prowler check efs_not_publicly_accessible for reference.', 'N/A', 'efs Resources')
}