DSCResources/MSFT_IntuneAppConfigurationPolicy/MSFT_IntuneAppConfigurationPolicy.psm1

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

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

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

        [Parameter(Mandatory = $true)]
        [System.Management.Automation.PSCredential]
        $GlobalAdminAccount
    )

    #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)
    $data.Add('Principal', $GlobalAdminAccount.UserName)
    Add-M365DSCTelemetryEvent -Data $data
    #endregion

    Write-Verbose -Message "Checking for the Intune App Configuration Policy {$DisplayName}"
    $ConnectionMode = New-M365DSCConnection -Platform 'Intune' `
        -InboundParameters $PSBoundParameters

    $nullResult = $PSBoundParameters
    $nullResult.Ensure = 'Absent'
    try
    {
        $configPolicy = Get-DeviceAppManagement_TargetedManagedAppConfigurations -Filter "displayName eq '$DisplayName'" `
            -ErrorAction Stop

        if ($null -eq $configPolicy)
        {
            Write-Verbose -Message "No App Configuration Policy with displayName {$DisplayName} was found"
            return $nullResult
        }

        Write-Verbose -Message "Found App Configuration Policy with displayName {$DisplayName}"
        return @{
            DisplayName        = $configPolicy.displayName
            Description        = $configPolicy.description
            Ensure             = 'Present'
            GlobalAdminAccount = $GlobalAdminAccount
        }
    }
    catch
    {
        Write-Verbose -Message $_
        Add-M365DSCEvent -Message $_ -EntryType 'Error' `
            -EventID 1 -Source $($MyInvocation.MyCommand.Source)
        return $nullResult
    }
}

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

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

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

        [Parameter(Mandatory = $true)]
        [System.Management.Automation.PSCredential]
        $GlobalAdminAccount
    )

    #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)
    $data.Add("Principal", $GlobalAdminAccount.UserName)
    Add-M365DSCTelemetryEvent -Data $data
    #endregion
    Write-Verbose -Message "Intune App Configuration Policy {$DisplayName}"

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

    $currentconfigPolicy = Get-TargetResource @PSBoundParameters

    if ($Ensure -eq 'Present' -and $currentconfigPolicy.Ensure -eq 'Absent')
    {
        Write-Verbose -Message "Creating new Intune App Configuration Policy {$DisplayName}"
        New-DeviceAppManagement_TargetedManagedAppConfigurations -displayName $DisplayName `
            -customSettings @() -Description $Description
    }
    elseif ($Ensure -eq 'Present' -and $currentconfigPolicy.Ensure -eq 'Present')
    {
        Write-Verbose -Message "Updating Intune App Configuration Policy {$DisplayName}"
        $configPolicy = Get-DeviceAppManagement_TargetedManagedAppConfigurations -Filter "displayName eq '$DisplayName'"
        Update-DeviceAppManagement_TargetedManagedAppConfigurations -targetedManagedAppConfigurationId $configPolicy.id `
            -displayName $DisplayName -Description $Description
    }
    elseif ($Ensure -eq 'Absent' -and $currentconfigPolicy.Ensure -eq 'Present')
    {
        Write-Verbose -Message "Removing Intune App Configuration Policy {$DisplayName}"
        $configPolicy = Get-DeviceAppManagement_TargetedManagedAppConfigurations -Filter "displayName eq '$DisplayName'"
        Remove-DeviceAppManagement_TargetedManagedAppConfigurations -targetedManagedAppConfigurationId $configPolicy.id
    }
}

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

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

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

        [Parameter(Mandatory = $true)]
        [System.Management.Automation.PSCredential]
        $GlobalAdminAccount
    )
    Write-Verbose -Message "Testing configuration of Intune App Configuration Policy {$DisplayName}"

    $CurrentValues = Get-TargetResource @PSBoundParameters

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

    $ValuesToCheck = $PSBoundParameters
    $ValuesToCheck.Remove('GlobalAdminAccount') | Out-Null

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

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

    return $TestResult
}

function Export-TargetResource
{
    [CmdletBinding()]
    [OutputType([System.String])]
    param
    (
        [Parameter(Mandatory = $true)]
        [System.Management.Automation.PSCredential]
        $GlobalAdminAccount
    )
    #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)
    $data.Add("Principal", $GlobalAdminAccount.UserName)
    Add-M365DSCTelemetryEvent -Data $data
    #endregion

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

    try
    {
        [array]$configPolicies = Get-DeviceAppManagement_TargetedManagedAppConfigurations -ErrorAction Stop
        $i = 1
        $content = ''
        Write-Host "`r`n" -NoNewLine
        foreach ($configPolicy in $configPolicies)
        {
            Write-Host " |---[$i/$($configPolicies.Count)] $($configPolicy.displayName)" -NoNewLine
            $params = @{
                DisplayName        = $configPolicy.displayName
                Ensure             = 'Present'
                GlobalAdminAccount = $GlobalAdminAccount
            }
            $result = Get-TargetResource @params
            $result.GlobalAdminAccount = Resolve-Credentials -UserName "globaladmin"
            $content += " IntuneAppConfigurationPolicy " + (New-GUID).ToString() + "`r`n"
            $content += " {`r`n"
            $currentDSCBlock = Get-DSCBlock -Params $result -ModulePath $PSScriptRoot
            $content += Convert-DSCStringParamToVariable -DSCBlock $currentDSCBlock -ParameterName "GlobalAdminAccount"
            $content += " }`r`n"
            $i++
            Write-Host $Global:M365DSCEmojiGreenCheckMark
        }
        return $content
    }
    catch
    {
        Write-Host $Global:M365DSCEmojiGreenCheckMark
        Write-Verbose -Message $_
        Add-M365DSCEvent -Message $_ -EntryType 'Error' `
            -EventID 1 -Source $($MyInvocation.MyCommand.Source)
        return ""
    }
}

Export-ModuleMember -Function *-TargetResource