Public/Get-Visit.ps1

<#
    .SYNOPSIS
    Gets a visit.

    .DESCRIPTION
    Gets all visits or a single visit if a visit id is specified. If the result return null, try the parameter "-Verbose" to get more details.
    
    .EXAMPLE
    Get-Visit
    
    VisitorID : 1
    Path : \\SERVER\root\OnGuard:Lnl_Visit.ID=1
    Credential :
    EmailList :
    SuperClass : Lnl_Element
    CardholderID : 1
    Class : Lnl_Visit
    SignOutVisit : System.Management.ManagementBaseObject SignVisitOut()
    Server : SERVER
    ScheduledTimeIn :
    ComputerName : SERVER
    TimeIn : 19/10/2017 11:30:25
    ScheduledTimeOut :
    SignInVisit : System.Management.ManagementBaseObject SignVisitIn(System.Int32 BadgeTypeID, System.String PrinterName, System.Int64 AssignedBadgeID)
    VisitType : 0
    VisitID : 1
    LastChanged : 19/10/2017 11:35:24
    TimeOut : 19/10/2017 11:35:24
    Purpose :
    
    .LINK
    https://github.com/erwindevreugd/PSDataConduIT
#>

function Get-Visit
{
    [CmdletBinding()]
    param
    (
        [Parameter(
            Position=0, 
            Mandatory=$false, 
            ValueFromPipelineByPropertyName=$true,
            HelpMessage='The name of the server where the DataConduIT service is running or localhost')]
        [string]$Server = $Script:Server,
        
        [Parameter(
            Position=1,
            Mandatory=$false, 
            ValueFromPipelineByPropertyName=$true,
            HelpMessage='The credentials used to authenticate the user to the DataConduIT service')]
        [PSCredential]$Credential = $Script:Credential,

        [Parameter(
            Mandatory=$false, 
            ValueFromPipelineByPropertyName=$true,
            HelpMessage='The visit id parameter')]
        [int]$VisitID,

        [Parameter(
            Mandatory=$false, 
            ValueFromPipelineByPropertyName=$true,
            HelpMessage='The cardholder id parameter')]
        [int]$CardholderID
    )

    process {
        $query = "SELECT * FROM Lnl_Visit WHERE __CLASS='Lnl_Visit'"

        if($VisitID) {
            $query += " AND ID=$VisitID"
        }

        if($CardholderID) {
            $query += " AND CARDHOLDERID=$CardholderID"
        }

        LogQuery $query

        $parameters = @{
            ComputerName=$Server;
            Namespace=$Script:OnGuardNamespace;
            Query=$query
        }

        if($Credential -ne $null) {
            $parameters.Add("Credential", $Credential)
        }

        Get-WmiObject @parameters | ForEach-Object { New-Object PSObject -Property @{
                Class=$_.__CLASS;
                SuperClass=$_.__SUPERCLASS;
                Server=$_.__SERVER;
                ComputerName=$_.__SERVER;
                Path=$_.__PATH;
                Credential=$Credential;
            
                VisitID=$_.ID;
                VisitorID=$_.VISITORID;
                VisitKey=$_.VISIT_KEY;
                CardholderID=$_.CARDHOLDERID;
                LastChanged=ToDateTime $_.LASTCHANGED;
                Purpose=$_.PURPOSE;
                ScheduledTimeIn=ToDateTime $_.SCHEDULED_TIMEIN;
                ScheduledTimeOut=ToDateTime $_.SCHEDULED_TIMEOUT;
                TimeIn=ToDateTime $_.TIMEIN;
                TimeOut=ToDateTime $_.TIMEOUT;
                VisitType=$_.TYPE;
                EmailList=$_.EMAIL_LIST;

                SignInVisit=$_.SignVisitIn;
                SignOutVisit=$_.SignVisitOut;            
            }
        }
    }
}