internal/eidsca/Test-MtEidscaAM02.ps1

<#
.SYNOPSIS
    Checks if Authentication Method - Microsoft Authenticator - Allow use of Microsoft Authenticator OTP is set to 'false'

.DESCRIPTION

    Defines if users can use the OTP code generated by the Authenticator App.

    Queries policies/authenticationMethodsPolicy/authenticationMethodConfigurations('MicrosoftAuthenticator')
    and returns the result of
     graph/policies/authenticationMethodsPolicy/authenticationMethodConfigurations('MicrosoftAuthenticator').isSoftwareOathEnabled -eq 'false'

.EXAMPLE
    Test-MtEidscaAM02

    Returns the result of graph.microsoft.com/beta/policies/authenticationMethodsPolicy/authenticationMethodConfigurations('MicrosoftAuthenticator').isSoftwareOathEnabled -eq 'false'
#>


function Test-MtEidscaAM02 {
    [CmdletBinding()]
    [OutputType([bool])]
    param()

    if ( $EnabledAuthMethods -notcontains 'MicrosoftAuthenticator' ) {
            Add-MtTestResultDetail -SkippedBecause 'Custom' -SkippedCustomReason 'Authentication method of Microsoft Authenticator is not enabled.'
            return $null
    }
    $result = Invoke-MtGraphRequest -RelativeUri "policies/authenticationMethodsPolicy/authenticationMethodConfigurations('MicrosoftAuthenticator')" -ApiVersion beta

    [string]$tenantValue = $result.isSoftwareOathEnabled
    $testResult = $tenantValue -eq 'false'
    $tenantValueNotSet = ($null -eq $tenantValue -or $tenantValue -eq "") -and 'false' -notlike '*$null*'

    if($testResult){
        $testResultMarkdown = "Well done. The configuration in your tenant and recommended value is **'false'** for **policies/authenticationMethodsPolicy/authenticationMethodConfigurations('MicrosoftAuthenticator')**"
    } elseif ($tenantValueNotSet) {
        $testResultMarkdown = "Your tenant is **not configured explicitly**.`n`nThe recommended value is **'false'** for **policies/authenticationMethodsPolicy/authenticationMethodConfigurations('MicrosoftAuthenticator')**. It seems that you are using a default value by Microsoft. We recommend to set the setting value explicitly since non set values could change depending on what Microsoft decides the current default should be."
    } else {
        $testResultMarkdown = "Your tenant is configured as **$($tenantValue)**.`n`nThe recommended value is **'false'** for **policies/authenticationMethodsPolicy/authenticationMethodConfigurations('MicrosoftAuthenticator')**"
    }
    Add-MtTestResultDetail -Result $testResultMarkdown -Severity 'High'

    return $tenantValue
}