functions/Export-DbaSpConfigure.ps1

#ValidationTags#Messaging,FlowControl,Pipeline,CodeStyle#
function Export-DbaSpConfigure {
    <#
        .SYNOPSIS
            Exports advanced sp_configure global configuration options to sql file.
 
        .DESCRIPTION
            Exports advanced sp_configure global configuration options to sql file.
 
        .PARAMETER SqlInstance
            SqlInstance name or SMO object representing the SQL Server to connect to. This can be a collection and receive pipeline input.
            You must have sysadmin access if needs to set 'show advanced options' to 1 and server version must be SQL Server version 2005 or higher.
 
        .PARAMETER SqlCredential
            Login to the target instance using alternative credentials. Windows and SQL Authentication supported. Accepts credential objects (Get-Credential)
 
        .PARAMETER Path
            Specifies the path to a file which will contain the sp_configure queries necessary to replicate the configuration settings on another instance. This file is suitable for input into Import-DbaSPConfigure.
            If not specified will output to My Documents folder with default name of ServerName-MMDDYYYYhhmmss-sp_configure.sql
            If a directory is passed then uses default name of ServerName-MMDDYYYYhhmmss-sp_configure.sql
 
        .PARAMETER EnableException
            By default, when something goes wrong we try to catch it, interpret it and give you a friendly warning message.
            This avoids overwhelming you with "sea of red" exceptions, but is inconvenient because it basically disables advanced scripting.
            Using this switch turns this "nice by default" feature off and enables you to catch exceptions with your own try/catch.
 
        .NOTES
            Tags: SpConfig, Configure, Configuration
            Website: https://dbatools.io
            Author: Chrissy LeMaire (@cl), netnerds.net
            Copyright: (C) Chrissy LeMaire, clemaire@gmail.com
            License: MIT https://opensource.org/licenses/MIT
 
        .LINK
            https://dbatools.io/Export-DbaSpConfigure
 
        .INPUTS
            A DbaInstanceParameter representing an array of SQL Server instances.
 
        .OUTPUTS
            Creates a new file for each SQL Server Instance
 
        .EXAMPLE
            Export-DbaSpConfigure -SqlInstance sourceserver
 
            Exports the SPConfigure settings on sourceserver. As no Path was defined outputs to My Documents folder with default name format of Servername-MMDDYYYYhhmmss-sp_configure.sql
 
        .EXAMPLE
            Export-DbaSpConfigure -SqlInstance sourceserver -Path C:\temp
 
            Exports the SPConfigure settings on sourceserver to the directory C:\temp using the default name format
 
        .EXAMPLE
            $cred = Get-Credential sqladmin
            Export-DbaSpConfigure -SqlInstance sourceserver -SqlCredential $cred -Path C:\temp\sp_configure.sql
 
            Exports the SPConfigure settings on sourceserver to the file C:\temp\sp_configure.sql. Uses SQL Authentication to connect. Will require SysAdmin rights if needs to set 'show advanced options'
 
        .EXAMPLE
            'Server1', 'Server2' | Export-DbaSpConfigure -Path C:\temp\configure.sql
 
            Exports the SPConfigure settings for Server1 and Server2 using pipeline. As more than 1 Server adds prefix of Servername and date to the file name and saves to file like C:\temp\Servername-MMDDYYYYhhmmss-configure.sql
    #>

    [CmdletBinding()]
    param (
        [Parameter(Mandatory, ValueFromPipeline)]
        [Alias("ServerInstance", "SqlServer")]
        [DbaInstanceParameter[]]$SqlInstance,
        [PSCredential]$SqlCredential,
        [string]$Path,
        [switch]$EnableException
    )
    process {
        foreach ($instance in $SqlInstance) {
            try {
                Write-Message -Level Verbose -Message "Connecting to $instance."
                $server = Connect-SqlInstance -SqlInstance $instance -SqlCredential $sqlcredential -MinimumVersion 9
            }
            catch {
                Stop-Function -Message "Failure" -Category ConnectionError -ErrorRecord $_ -Target $instance -Continue
            }

            if (-not (Test-Bound -ParameterName Path)) {
                $timenow = (Get-Date -uformat "%m%d%Y%H%M%S")
                $mydocs = [Environment]::GetFolderPath('MyDocuments')
                $filepath = "$mydocs\$($server.name.replace('\', '$'))-$timenow-sp_configure.sql"
            }

            if (Test-Path $Path -PathType Container) {
                $timenow= (Get-Date -uformat "%m%d%Y%H%M%S")
                $filepath = Join-Path -Path $Path -ChildPath "$($server.name.replace('\', '$'))-$timenow-sp_configure.sql"
            }
            elseif (Test-Path $Path -PathType Leaf) {
                if ($SqlInstance.Count -gt 1) {
                    $timenow= (Get-Date -uformat "%m%d%Y%H%M%S")
                    $PathData =  Get-ChildItem $Path
                    $filepath = "$($PathData.DirectoryName)\$($server.name.replace('\', '$'))-$timenow-$($PathData.Name)"
                }
                else {
                    $filepath = $Path
                }
            }

            If (-not $filepath) {
                $filepath = $Path
            }

            $topdir = Split-Path -Path $filepath

            if (-not (Test-Path -Path $topdir)) {
                New-Item -Path $topdir -ItemType Directory
            }

            $ShowAdvancedOptions = $server.Configuration.ShowAdvancedOptions.ConfigValue

            if($ShowAdvancedOptions -eq 0) {
                try {
                    $server.Configuration.ShowAdvancedOptions.ConfigValue = $true
                    $server.Configuration.Alter($true)
                }
                catch {
                    Stop-Function -Message "Can't set 'show advanced options' to 1 on instance $instance" -ErrorRecord $_ -Continue
                }
            }

            try {
                Set-Content -Path $filepath "EXEC sp_configure 'show advanced options' , 1; RECONFIGURE WITH OVERRIDE"
            }
            catch {
                Stop-Function -Message "Can't write to $filepath" -ErrorRecord $_ -Continue
            }

            foreach ($sourceprop in $server.Configuration.Properties) {
                $displayname = $sourceprop.DisplayName
                $configvalue = $sourceprop.ConfigValue
                Add-Content -Path $filepath "EXEC sp_configure '$displayname' , $configvalue;"
            }

            if($ShowAdvancedOptions -eq 0) {
                Add-Content -Path $filepath "EXEC sp_configure 'show advanced options' , 0;"
                Add-Content -Path $filepath "RECONFIGURE WITH OVERRIDE"

                $server.Configuration.ShowAdvancedOptions.ConfigValue = $false
                $server.Configuration.Alter($true)
            }
            Get-ChildItem -Path $filepath
        }
    }

    end {
        Write-Message -Level Verbose -Message "Server configuration export finished"

        Test-DbaDeprecation -DeprecatedOn "1.0.0" -EnableException:$false -Alias Export-SqlSpConfigure
    }
}