DSCResources/MSFT_AADMultiTenantOrganizationIdentitySyncPolicyTemplate/MSFT_AADMultiTenantOrganizationIdentitySyncPolicyTemplate.psm1

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

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

        [Parameter()]
        [Microsoft.Management.Infrastructure.CimInstance]
        $UserSyncInbound,

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

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

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

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

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

        [Parameter()]
        [Switch]
        $ManagedIdentity,

        [Parameter()]
        [System.String[]]
        $AccessTokens
    )

    New-M365DSCConnection -Workload 'MicrosoftGraph' `
        -InboundParameters $PSBoundParameters | Out-Null

    #Ensure the proper dependencies are installed in the current environment.
    Confirm-M365DSCDependencies

    #region Telemetry
    $ResourceName = $MyInvocation.MyCommand.ModuleName.Replace('MSFT_', '')
    $CommandName = $MyInvocation.MyCommand
    $data = Format-M365DSCTelemetryParameters -ResourceName $ResourceName `
        -CommandName $CommandName `
        -Parameters $PSBoundParameters
    Add-M365DSCTelemetryEvent -Data $data
    #endregion

    $nullResult = $PSBoundParameters
    $nullResult.Ensure = 'Absent'
    try
    {
        $instance = Get-MgBetaPolicyCrossTenantAccessPolicyTemplateMultiTenantOrganizationIdentitySynchronization -ErrorAction SilentlyContinue

        if ($null -eq $instance)
        {
            return $nullResult
        }

        $UserSyncInboundValue = @{
            isSyncAllowed = $instance.UserSyncInbound.isSyncAllowed
        }

        $results = @{
            IsSingleInstance         = 'Yes'
            TemplateApplicationLevel = $instance.TemplateApplicationLevel
            UserSyncInbound          = $UserSyncInboundValue
            Ensure                   = 'Present'
            Credential               = $Credential
            ApplicationId            = $ApplicationId
            TenantId                 = $TenantId
            CertificateThumbprint    = $CertificateThumbprint
            ManagedIdentity          = $ManagedIdentity.IsPresent
            AccessTokens             = $AccessTokens
        }
        return [System.Collections.Hashtable] $results
    }
    catch
    {
        Write-Verbose -Message $_
        New-M365DSCLogEntry -Message 'Error retrieving data:' `
            -Exception $_ `
            -Source $($MyInvocation.MyCommand.Source) `
            -TenantId $TenantId `
            -Credential $Credential

        return $nullResult
    }
}

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

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

        [Parameter()]
        [Microsoft.Management.Infrastructure.CimInstance]
        $UserSyncInbound,

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

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

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

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

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

        [Parameter()]
        [Switch]
        $ManagedIdentity,

        [Parameter()]
        [System.String[]]
        $AccessTokens
    )

    #Ensure the proper dependencies are installed in the current environment.
    Confirm-M365DSCDependencies

    #region Telemetry
    $ResourceName = $MyInvocation.MyCommand.ModuleName.Replace('MSFT_', '')
    $CommandName = $MyInvocation.MyCommand
    $data = Format-M365DSCTelemetryParameters -ResourceName $ResourceName `
        -CommandName $CommandName `
        -Parameters $PSBoundParameters
    Add-M365DSCTelemetryEvent -Data $data
    #endregion

    $currentInstance = Get-MgBetaPolicyCrossTenantAccessPolicyTemplateMultiTenantOrganizationIdentitySynchronization
    Write-Verbose -Message "Updating MTO Identity Sync Policy Template."
    $setParameters = @{
        Id                       = $currentInstance.Id
        TemplateApplicationLevel = $TemplateApplicationLevel
        UserSyncInbound          = @{
            isSyncAllowed = $UserSyncInbound.isSyncAllowed
        }
    }
    Update-MgBetaPolicyCrossTenantAccessPolicyTemplateMultiTenantOrganizationIdentitySynchronization @setParameters
}

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

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

        [Parameter()]
        [Microsoft.Management.Infrastructure.CimInstance]
        $UserSyncInbound,

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

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

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

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

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

        [Parameter()]
        [Switch]
        $ManagedIdentity,

        [Parameter()]
        [System.String[]]
        $AccessTokens
    )

    #Ensure the proper dependencies are installed in the current environment.
    Confirm-M365DSCDependencies

    #region Telemetry
    $ResourceName = $MyInvocation.MyCommand.ModuleName.Replace('MSFT_', '')
    $CommandName = $MyInvocation.MyCommand
    $data = Format-M365DSCTelemetryParameters -ResourceName $ResourceName `
        -CommandName $CommandName `
        -Parameters $PSBoundParameters
    Add-M365DSCTelemetryEvent -Data $data
    #endregion

    $CurrentValues = Get-TargetResource @PSBoundParameters
    $ValuesToCheck = ([Hashtable]$PSBoundParameters).Clone()
    $testTargetResource = $true

    #Compare Cim instances
    foreach ($key in $PSBoundParameters.Keys)
    {
        $source = $PSBoundParameters.$key
        $target = $CurrentValues.$key
        if ($null -ne $source -and $source.GetType().Name -like '*CimInstance*')
        {
            if (-not ($source.GetType().Name -eq 'CimInstance[]' -and $source.Count -eq 0))
            {
                $testResult = Compare-M365DSCComplexObject `
                    -Source ($source) `
                    -Target ($target)

                if (-not $testResult)
                {
                    Write-Verbose "TestResult returned False for $source"
                    $testTargetResource = $false
                }
                else
                {
                    $ValuesToCheck.Remove($key) | Out-Null
                }
            }
            else
            {
                $ValuesToCheck.Remove($key) | Out-Null
            }
        }
    }
    Write-Verbose -Message "Current Values: $(Convert-M365DscHashtableToString -Hashtable $CurrentValues)"
    Write-Verbose -Message "Target Values: $(Convert-M365DscHashtableToString -Hashtable $ValuesToCheck)"

    $testResult = Test-M365DSCParameterState -CurrentValues $CurrentValues `
        -Source $($MyInvocation.MyCommand.Source) `
        -DesiredValues $PSBoundParameters `
        -ValuesToCheck $ValuesToCheck.Keys

    Write-Verbose -Message "Test-TargetResource returned $testResult"
    if (-not $TestResult)
    {
        $testTargetResource = $false
    }

    return $testTargetResource
}

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

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

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

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

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

        [Parameter()]
        [Switch]
        $ManagedIdentity,

        [Parameter()]
        [System.String[]]
        $AccessTokens
    )

    $ConnectionMode = New-M365DSCConnection -Workload 'MicrosoftGraph' `
        -InboundParameters $PSBoundParameters

    #Ensure the proper dependencies are installed in the current environment.
    Confirm-M365DSCDependencies

    #region Telemetry
    $ResourceName = $MyInvocation.MyCommand.ModuleName.Replace('MSFT_', '')
    $CommandName = $MyInvocation.MyCommand
    $data = Format-M365DSCTelemetryParameters -ResourceName $ResourceName `
        -CommandName $CommandName `
        -Parameters $PSBoundParameters
    Add-M365DSCTelemetryEvent -Data $data
    #endregion

    try
    {
        $Script:ExportMode = $true

        if ($null -ne $Global:M365DSCExportResourceInstancesCount)
        {
            $Global:M365DSCExportResourceInstancesCount++
        }


        $params = @{
            IsSingleInstance      = 'Yes'
            Credential            = $Credential
            ApplicationId         = $ApplicationId
            TenantId              = $TenantId
            CertificateThumbprint = $CertificateThumbprint
            ManagedIdentity       = $ManagedIdentity.IsPresent
            AccessTokens          = $AccessTokens
        }

        $Results = Get-TargetResource @Params
        if ($null -ne $Results.UserSyncInbound)
        {
            $complexMapping = @(
                @{
                    Name            = 'UserSyncInbound'
                    CimInstanceName = 'MSFT_AADMultiTenantOrganizationIdentitySyncPolicyTemplateUserSyncInbound'
                    IsRequired      = $False
                }
            )
            $complexTypeStringResult = Get-M365DSCDRGComplexTypeToString `
                -ComplexObject $Results.UserSyncInbound `
                -CIMInstanceName 'MSFT_AADMultiTenantOrganizationIdentitySyncPolicyTemplateUserSyncInbound' `
                -ComplexTypeMapping $complexMapping

            if (-not [String]::IsNullOrWhiteSpace($complexTypeStringResult))
            {
                $Results.UserSyncInbound = $complexTypeStringResult
            }
            else
            {
                $Results.Remove('UserSyncInbound') | Out-Null
            }
        }
        $currentDSCBlock = Get-M365DSCExportContentForResource -ResourceName $ResourceName `
            -ConnectionMode $ConnectionMode `
            -ModulePath $PSScriptRoot `
            -Results $Results `
            -Credential $Credential `
            -NoEscape @('UserSyncInbound')
        $dscContent += $currentDSCBlock
        Save-M365DSCPartialExport -Content $currentDSCBlock `
            -FileName $Global:PartialExportFileName

        Write-M365DSCHost -Message $Global:M365DSCEmojiGreenCheckMark -CommitWrite

        return $dscContent
    }
    catch
    {
        Write-M365DSCHost -Message $Global:M365DSCEmojiRedX -CommitWrite

        New-M365DSCLogEntry -Message 'Error during Export:' `
            -Exception $_ `
            -Source $($MyInvocation.MyCommand.Source) `
            -TenantId $TenantId `
            -Credential $Credential

        return ''
    }
}

Export-ModuleMember -Function *-TargetResource