Public/Get-PiHoleConfig.ps1

function Get-PiHoleConfig {
    <#
    .SYNOPSIS
    Get current configuration of your Pi-hole.
 
    .DESCRIPTION
    Gets the current configuration of your Pi-hole using the /config API endpoint.
 
    .PARAMETER BaseUrl
    The base URL of the Pi-hole instance (e.g., http://pi.hole or https://pi.hole).
 
    .PARAMETER Credential
    A PSCredential object containing the Pi-hole password.
 
    .PARAMETER Detailed
    (Optional) If specified, returns detailed information about the configuration. Default is $false.
 
    .PARAMETER SkipCertificateCheck
    Skip SSL certificate validation. Useful for self-signed certificates.
 
    .OUTPUTS
    The configuration data returned by the Pi-hole API.
 
    .EXAMPLE
    Get-PiHoleConfig -BaseUrl 'https://pi.hole' -Credential $cred -SkipCertificateCheck
     
    .EXAMPLE
    Get-PiHoleConfig -BaseUrl 'http://pi.hole' -Credential $cred -Detailed
    #>

    [CmdletBinding()]
    param (
        [Parameter(Mandatory = $true)]
        [string]$BaseUrl,

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

        [Parameter(Mandatory = $false)]
        [switch]$Detailed,

        [switch]$SkipCertificateCheck
    )

    begin {
        # Nothing to validate in the begin block
    }

    process {
        try {
            $sessionData = Connect-PiHole -BaseUrl $BaseUrl -Credential $Credential -SkipCertificateCheck:$SkipCertificateCheck
            $detailedValue = if ($Detailed.IsPresent) { $true } else { $false }
            $url = "$($BaseUrl)/api/config?detailed=$($detailedValue)"
            Write-Verbose "Request URL: $url"
            $headers = @{ 'X-FTL-SID' = $sessionData.SID; 'Accept' = 'application/json' }
            
            $invokeParams = @{
                Uri         = $url
                Method      = 'Get'
                Headers     = $headers
                ErrorAction = 'Stop'
            }

            if ($SkipCertificateCheck) {
                $invokeParams.SkipCertificateCheck = $true
            }

            $response = Invoke-RestMethod @invokeParams
            return $response
        }
        catch {
            Write-Host "Error: $_" -ForegroundColor Red
            if ($sessionData) {
                Disconnect-PiHole -BaseUrl $BaseUrl -Id $sessionData.ID -SID $sessionData.SID -SkipCertificateCheck:$SkipCertificateCheck
            }
        }
        finally {
            if ($sessionData) {
                Disconnect-PiHole -BaseUrl $BaseUrl -Id $sessionData.ID -SID $sessionData.SID -SkipCertificateCheck:$SkipCertificateCheck
            }
        }
    }

    end {
        # Nothing to clean up in the end block
    }
}