public/Set-CTDNSSettings.ps1

Function Set-CTDNSSettings {
    [cmdletBinding(
        DefaultParameterSetName='All',
        #SupportsShouldProcess = $true,
        ConfirmImpact='high'
        )]
    Param(
        [Parameter(
            Mandatory=$true,
            ParameterSetName='All'
        )]
        [String]$IP,

        [Parameter(
            Mandatory=$true,
            ParameterSetName='All'
        )]
        [pscredential]$Credential,

        [Parameter(
            Mandatory=$false,
            ParameterSetName='All'
        )]
        [String]$PrimaryDNS,

        [Parameter(
            Mandatory=$false,
            ParameterSetName='All'
        )]
        [String]$SecondaryDNS

    )
    DynamicParam {
        $DynamicParameters = @{
            CameraType = @{
                Mandatory = $true
                Position = 1
                ParameterSetName = "All"
                Enum = $Script:SupportedCameraModels
            }
            DNSType = @{
                Mandatory = $false
                Position = 2
                ParameterSetName = 'All'
                Enum = @(
                    'Manual'
                    'DHCP'
                )
                Value = 'Manual'
            }
        }

        return New-DynamicParameterSet -ParameterTable $DynamicParameters
    }
    Begin {
        Write-Debug "[Set-CTDNSSettings] Started"
        $CameraType = $PSBoundParameters.CameraType
        $DNSType = $PSBoundParameters.DNSType

        #Check Parameters
        if($DNSType -eq 'Manual' -and (!$PrimaryDNS -or !$SecondaryDNS)) {
            Throw "Manual DNS entry requires Primary and Secondary DNS"
        }

        #Build Submission Object
        $obj = @{
            IP = $IP
            Credential = $Credential
            DNSType = $DNSType
            PrimaryDNS = $PrimaryDNS
            SecondaryDNS = $SecondaryDNS
        }

        #Choose Camera Model
        Switch ($CameraType) {
            Hanwha {
                return Set-HanwhaDNSSettings -Object $obj
            }
        }
    }
}