DSCResources/MSFT_O365AdminAuditLogConfig/MSFT_O365AdminAuditLogConfig.psm1

function Get-TargetResource
{
    [CmdletBinding()]
    [OutputType([System.Collections.Hashtable])]
    param
    (
        [Parameter(Mandatory = $true)]
        [ValidateSet('Yes')]
        [String]
        $IsSingleInstance,

        [Parameter()]
        [ValidateSet('Present')]
        [System.String]
        $Ensure = 'Present',

        [Parameter(Mandatory = $true)]
        [ValidateSet('Enabled', 'Disabled')]
        [System.String]
        $UnifiedAuditLogIngestionEnabled,

        [Parameter()]
        [System.Management.Automation.PSCredential]
        $GlobalAdminAccount,

        [Parameter()]
        [System.String]
        $ApplicationId,

        [Parameter()]
        [System.String]
        $TenantId,

        [Parameter()]
        [System.String]
        $CertificateThumbprint,

        [Parameter()]
        [System.String]
        $CertificatePath,

        [Parameter()]
        [System.Management.Automation.PSCredential]
        $CertificatePassword
    )

    Write-Verbose -Message "Getting configuration for Office 365 Audit Log"
    #region Telemetry
    $ResourceName = $MyInvocation.MyCommand.ModuleName.Replace("MSFT_", "")
    $data = [System.Collections.Generic.Dictionary[[String], [String]]]::new()
    $data.Add("Resource", $ResourceName)
    $data.Add("Method", $MyInvocation.MyCommand)
    Add-M365DSCTelemetryEvent -Data $data
    #endregion

    $nullReturn = @{
        IsSingleInstance                = $IsSingleInstance
        Ensure                          = 'Absent'
        GlobalAdminAccount              = $GlobalAdminAccount
        UnifiedAuditLogIngestionEnabled = $UnifiedAuditLogIngestionEnabled
        ApplicationId                   = $ApplicationId
        TenantId                        = $TenantId
        CertificateThumbprint           = $CertificateThumbprint
    }

    $ConnectionMode = New-M365DSCConnection -Platform 'ExchangeOnline' `
        -InboundParameters $PSBoundParameters

    $GetResults = Get-AdminAuditLogConfig
    if (-not $GetResults)
    {
        Write-Warning 'Unable to determine Unified Audit Log Ingestion State.'
        Write-Verbose -Message "Returning Get-TargetResource NULL Result"
        return $nullReturn
    }
    else
    {
        if ($GetResults.UnifiedAuditLogIngestionEnabled)
        {
            $UnifiedAuditLogIngestionEnabledReturnValue = 'Enabled'
        }
        else
        {
            $UnifiedAuditLogIngestionEnabledReturnValue = 'Disabled'
        }

        $Result = @{
            IsSingleInstance                = $IsSingleInstance
            Ensure                          = 'Present'
            GlobalAdminAccount              = $GlobalAdminAccount
            UnifiedAuditLogIngestionEnabled = $UnifiedAuditLogIngestionEnabledReturnValue
        }
        return $Result
    }
}

function Set-TargetResource
{
    [CmdletBinding()]
    param
    (
        [Parameter(Mandatory = $true)]
        [ValidateSet('Yes')]
        [String]
        $IsSingleInstance,

        [Parameter()]
        [ValidateSet('Present')]
        [System.String]
        $Ensure = 'Present',

        [Parameter(Mandatory = $true)]
        [ValidateSet('Enabled', 'Disabled')]
        [System.String]
        $UnifiedAuditLogIngestionEnabled,

        [Parameter()]
        [System.Management.Automation.PSCredential]
        $GlobalAdminAccount,

        [Parameter()]
        [System.String]
        $ApplicationId,

        [Parameter()]
        [System.String]
        $TenantId,

        [Parameter()]
        [System.String]
        $CertificateThumbprint,

        [Parameter()]
        [System.String]
        $CertificatePath,

        [Parameter()]
        [System.Management.Automation.PSCredential]
        $CertificatePassword
    )

    Write-Verbose -Message "Setting configuration for Office 365 Audit Log"
    #region Telemetry
    $ResourceName = $MyInvocation.MyCommand.ModuleName.Replace("MSFT_", "")
    $data = [System.Collections.Generic.Dictionary[[String], [String]]]::new()
    $data.Add("Resource", $ResourceName)
    $data.Add("Method", $MyInvocation.MyCommand)
    Add-M365DSCTelemetryEvent -Data $data
    #endregion

    $ConnectionMode = New-M365DSCConnection -Platform 'ExchangeOnline' `
        -InboundParameters $PSBoundParameters

    if ($UnifiedAuditLogIngestionEnabled -eq 'Enabled')
    {
        try
        {
            Set-AdminAuditLogConfig -UnifiedAuditLogIngestionEnabled $true -EA SilentlyContinue
        }
        catch
        {
            $Message = "Couldn't set the Audit Log Ingestion. Please run Enable-OrganizationCustomization first."
            Write-Verbose $Message
            New-M365DSCLogEntry -Error $_ -Message $Message -Source $MyInvocation.MyCommand.ModuleName
        }
    }
    else
    {
        try
        {
            Set-AdminAuditLogConfig -UnifiedAuditLogIngestionEnabled $false -EA SilentlyContinue
        }
        catch
        {
            $Message = "Couldn't set the Audit Log Ingestion. Please run Enable-OrganizationCustomization first."
            Write-Verbose $Message
            New-M365DSCLogEntry -Error $_ -Message $Message -Source $MyInvocation.MyCommand.ModuleName
        }
    }
}

function Test-TargetResource
{
    [CmdletBinding()]
    [OutputType([System.Boolean])]
    param
    (
        [Parameter(Mandatory = $true)]
        [ValidateSet('Yes')]
        [String]
        $IsSingleInstance,

        [Parameter()]
        [ValidateSet('Present')]
        [System.String]
        $Ensure = 'Present',

        [Parameter(Mandatory = $true)]
        [ValidateSet('Enabled', 'Disabled')]
        [System.String]
        $UnifiedAuditLogIngestionEnabled,

        [Parameter()]
        [System.Management.Automation.PSCredential]
        $GlobalAdminAccount,

        [Parameter()]
        [System.String]
        $ApplicationId,

        [Parameter()]
        [System.String]
        $TenantId,

        [Parameter()]
        [System.String]
        $CertificateThumbprint,

        [Parameter()]
        [System.String]
        $CertificatePath,

        [Parameter()]
        [System.Management.Automation.PSCredential]
        $CertificatePassword
    )

    Write-Verbose -Message "Testing configuration for Office 365 Audit Log"

    $CurrentValues = Get-TargetResource @PSBoundParameters

    Write-Verbose -Message "Current Values: $(Convert-M365DscHashtableToString -Hashtable $CurrentValues)"
    Write-Verbose -Message "Target Values: $(Convert-M365DscHashtableToString -Hashtable $PSBoundParameters)"

    $TestResult = Test-Microsoft365DSCParameterState -CurrentValues $CurrentValues `
        -Source $($MyInvocation.MyCommand.Source) `
        -DesiredValues $PSBoundParameters `
        -ValuesToCheck @('UnifiedAuditLogIngestionEnabled')

    Write-Verbose -Message "Test-TargetResource returned $TestResult"

    return $TestResult
}

function Export-TargetResource
{
    [CmdletBinding()]
    [OutputType([System.String])]
    param
    (
        [Parameter()]
        [System.Management.Automation.PSCredential]
        $GlobalAdminAccount,

        [Parameter()]
        [System.String]
        $ApplicationId,

        [Parameter()]
        [System.String]
        $TenantId,

        [Parameter()]
        [System.String]
        $CertificateThumbprint,

        [Parameter()]
        [System.String]
        $CertificatePath,

        [Parameter()]
        [System.Management.Automation.PSCredential]
        $CertificatePassword
    )
    #region Telemetry
    $ResourceName = $MyInvocation.MyCommand.ModuleName.Replace("MSFT_", "")
    $data = [System.Collections.Generic.Dictionary[[String], [String]]]::new()
    $data.Add("Resource", $ResourceName)
    $data.Add("Method", $MyInvocation.MyCommand)
    Add-M365DSCTelemetryEvent -Data $data
    #endregion
    $ConnectionMode = New-M365DSCConnection -Platform 'ExchangeOnline' `
        -InboundParameters $PSBoundParameters

    $O365AdminAuditLogConfig = Get-AdminAuditLogConfig
    $value = "Disabled"
    if ($O365AdminAuditLogConfig.UnifiedAuditLogIngestionEnabled)
    {
        $value = "Enabled"
    }

    $dscContent = ""
    $Params = @{
        IsSingleInstance                = 'Yes'
        UnifiedAuditLogIngestionEnabled = $value
        GlobalAdminAccount              = $GlobalAdminAccount
        ApplicationId                   = $ApplicationId
        TenantId                        = $TenantId
        CertificateThumbprint           = $CertificateThumbprint
    }
    $Results = Get-TargetResource @Params

    if ($Results.Ensure -eq 'Present')
    {
        $Results = Update-M365DSCExportAuthenticationResults -ConnectionMode $ConnectionMode `
            -Results $Results
        $dscContent += Get-M365DSCExportContentForResource -ResourceName $ResourceName `
            -ConnectionMode $ConnectionMode `
            -ModulePath $PSScriptRoot `
            -Results $Results `
            -GlobalAdminAccount $GlobalAdminAccount
    }
    Write-Host $Global:M365DSCEmojiGreenCheckMark
    return $dscContent
}

Export-ModuleMember -Function *-TargetResource