DSCResources/MSFT_TeamsGuestMessagingConfiguration/MSFT_TeamsGuestMessagingConfiguration.psm1

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

        [Parameter()]
        [System.Boolean]
        $AllowUserEditMessage,

        [Parameter()]
        [System.Boolean]
        $AllowUserDeleteMessage,

        [Parameter()]
        [System.Boolean]
        $AllowUserChat,

        [Parameter()]
        [System.Boolean]
        $AllowGiphy,

        [Parameter()]
        [System.String]
        [ValidateSet("Moderate", "Strict", "NoRestriction")]
        $GiphyRatingType = 'Moderate',

        [Parameter()]
        [System.Boolean]
        $AllowMemes,

        [Parameter()]
        [System.Boolean]
        $AllowStickers,

        [Parameter()]
        [System.Boolean]
        $AllowImmersiveReader,

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

    Write-Verbose -Message "Getting configuration of Teams Guest Messaging settings"

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

    #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)
    $data.Add("TenantId", $TenantId)
    $data.Add("ConnectionMode", $ConnectionMode)
    Add-M365DSCTelemetryEvent -Data $data
    #endregion

    try
    {
        $config = Get-CsTeamsGuestMessagingConfiguration -ErrorAction Stop

        return @{
            Identity               = $Identity
            AllowUserEditMessage   = $config.AllowUserEditMessage
            AllowUserDeleteMessage = $config.AllowUserDeleteMessage
            AllowUserChat          = $config.AllowUserChat
            AllowGiphy             = $config.AllowGiphy
            GiphyRatingType        = $config.GiphyRatingType
            AllowMemes             = $config.AllowMemes
            AllowStickers          = $config.AllowStickers
            AllowImmersiveReader   = $config.AllowImmersiveReader
            GlobalAdminAccount     = $GlobalAdminAccount
        }
    }
    catch
    {
        try
        {
            Write-Verbose -Message $_
            $tenantIdValue = ""
            if (-not [System.String]::IsNullOrEmpty($TenantId))
            {
                $tenantIdValue = $TenantId
            }
            elseif ($null -ne $GlobalAdminAccount)
            {
                $tenantIdValue = $GlobalAdminAccount.UserName.Split('@')[1]
            }
            Add-M365DSCEvent -Message $_ -EntryType 'Error' `
                -EventID 1 -Source $($MyInvocation.MyCommand.Source) `
                -TenantId $tenantIdValue
        }
        catch
        {
            Write-Verbose -Message $_
        }
        throw $_
    }
}

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

        [Parameter()]
        [System.Boolean]
        $AllowUserEditMessage,

        [Parameter()]
        [System.Boolean]
        $AllowUserDeleteMessage,

        [Parameter()]
        [System.Boolean]
        $AllowUserChat,

        [Parameter()]
        [System.Boolean]
        $AllowGiphy,

        [Parameter()]
        [System.String]
        [ValidateSet("Moderate", "Strict", "NoRestriction")]
        $GiphyRatingType = 'Moderate',

        [Parameter()]
        [System.Boolean]
        $AllowMemes,

        [Parameter()]
        [System.Boolean]
        $AllowStickers,

        [Parameter()]
        [System.Boolean]
        $AllowImmersiveReader,

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

    Write-Verbose -Message "Setting configuration of Teams Guest Messaging settings"
    $ConnectionMode = New-M365DSCConnection -Platform 'MicrosoftTeams' `
        -InboundParameters $PSBoundParameters
    # Check that at least one optional parameter is specified
    $inputValues = $PSBoundParameters
    $inputValues.Remove("GlobalAdminAccount") | Out-Null
    $inputValues.Remove("Identity") | Out-Null
    foreach ($item in $inputValues)
    {
        if ([System.String]::IsNullOrEmpty($item.Value))
        {
            $inputValues.Remove($item.key) | Out-Null
        }
    }

    if ($inputValues.Count -eq 0)
    {
        throw "You need to specify at least one optional parameter for the Set-TargetResource function `
            of the [TeamsGuestMessagingConfiguration] instance {$Identity}"

    }

    #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

    $SetParams = $PSBoundParameters
    $SetParams.Remove("GlobalAdminAccount") | Out-Null

    Set-CsTeamsGuestMessagingConfiguration @SetParams
}

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

        [Parameter()]
        [System.Boolean]
        $AllowUserEditMessage,

        [Parameter()]
        [System.Boolean]
        $AllowUserDeleteMessage,

        [Parameter()]
        [System.Boolean]
        $AllowUserChat,

        [Parameter()]
        [System.Boolean]
        $AllowGiphy,

        [Parameter()]
        [System.String]
        [ValidateSet("Moderate", "Strict", "NoRestriction")]
        $GiphyRatingType = 'Moderate',

        [Parameter()]
        [System.Boolean]
        $AllowMemes,

        [Parameter()]
        [System.Boolean]
        $AllowStickers,

        [Parameter()]
        [System.Boolean]
        $AllowImmersiveReader,

        [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)
    $data.Add("TenantId", $TenantId)
    Add-M365DSCTelemetryEvent -Data $data
    #endregion

    Write-Verbose -Message "Testing configuration of Teams Guest Messaging settings"

    $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
    )

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

    #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

    try
    {
        $dscContent = ''
        $params = @{
            Identity           = "Global"
            GlobalAdminAccount = $GlobalAdminAccount
        }
        $Results = Get-TargetResource @Params
        $Results = Update-M365DSCExportAuthenticationResults -ConnectionMode $ConnectionMode `
            -Results $Results
        $currentDSCBlock = Get-M365DSCExportContentForResource -ResourceName $ResourceName `
            -ConnectionMode $ConnectionMode `
            -ModulePath $PSScriptRoot `
            -Results $Results `
            -GlobalAdminAccount $GlobalAdminAccount
        $dscContent += $currentDSCBlock
        Save-M365DSCPartialExport -Content $currentDSCBlock `
            -FileName $Global:PartialExportFileName
        Write-Host $Global:M365DSCEmojiGreenCheckMark
        return $dscContent
    }
    catch
    {
        Write-Host $Global:M365DSCEmojiRedX
        try
        {
            Write-Verbose -Message $_
            $tenantIdValue = ""
            if (-not [System.String]::IsNullOrEmpty($TenantId))
            {
                $tenantIdValue = $TenantId
            }
            elseif ($null -ne $GlobalAdminAccount)
            {
                $tenantIdValue = $GlobalAdminAccount.UserName.Split('@')[1]
            }
            Add-M365DSCEvent -Message $_ -EntryType 'Error' `
                -EventID 1 -Source $($MyInvocation.MyCommand.Source) `
                -TenantId $tenantIdValue
        }
        catch
        {
            Write-Verbose -Message $_
        }
        return ""
    }
}

Export-ModuleMember -Function *-TargetResource