ps.ipam/classlib/Cmdlets/GetVlanCmdlet.cs

namespace PS.IPAM.Cmdlets;
using System;
using System.Collections.Generic;
using System.Management.Automation;
using PS.IPAM;
using PS.IPAM.Helpers;

[Cmdlet(VerbsCommon.Get, "Vlan", DefaultParameterSetName = "NoParams")]
[OutputType(typeof(Vlan))]
public class GetVlanCmdlet : PSCmdlet
{
    [Parameter(
        Mandatory = true,
        ValueFromPipeline = true,
        ValueFromPipelineByPropertyName = true,
        Position = 0,
        ParameterSetName = "ByID")]
    [ValidateNotNullOrEmpty]
    public int? Id { get; set; }

    [Parameter(
        Mandatory = true,
        ValueFromPipeline = true,
        ValueFromPipelineByPropertyName = true,
        Position = 0,
        ParameterSetName = "ByNumber")]
    [ValidateNotNullOrEmpty]
    public int? Number { get; set; }

    [Parameter(
        Mandatory = true,
        ValueFromPipeline = true,
        ValueFromPipelineByPropertyName = true,
        Position = 0,
        ParameterSetName = "ByL2Domain")]
    [ValidateNotNullOrEmpty]
    public int? L2DomainId { get; set; }

    [Parameter(
        Mandatory = false,
        ValueFromPipeline = true,
        ValueFromPipelineByPropertyName = true,
        Position = 0,
        ParameterSetName = "BySubnetObject")]
    [ValidateNotNullOrEmpty]
    public Subnetwork? SubnetObject { get; set; }

    [Parameter(
        Mandatory = false,
        ValueFromPipeline = true,
        ValueFromPipelineByPropertyName = true,
        Position = 0,
        ParameterSetName = "ByDomainObject")]
    [ValidateNotNullOrEmpty]
    public Domain? DomainObject { get; set; }

    protected override void ProcessRecord()
    {
        try
        {
            var controller = controllers.vlan;
            var identifiers = new List<string>();

            switch (ParameterSetName)
            {
                case "ByID":
                    identifiers.Add(Id!.Value.ToString());
                    break;
                case "ByNumber":
                    identifiers.Add("search");
                    identifiers.Add(Number!.Value.ToString());
                    break;
                case "ByL2Domain":
                    controller = controllers.l2domains;
                    identifiers.Add(L2DomainId!.Value.ToString());
                    identifiers.Add(subcontrollers.vlans.ToString());
                    break;
                case "BySubnetObject":
                    if (SubnetObject != null && SubnetObject.VlanId > 0)
                    {
                        identifiers.Add(SubnetObject.VlanId.ToString());
                    }
                    else
                    {
                        return;
                    }
                    break;
                case "ByDomainObject":
                    if (DomainObject != null)
                    {
                        var result = RequestHelper.InvokeRequest("GET", controllers.l2domains, types.Vlan, subcontrollers.vlans, null, new[] { DomainObject.Id.ToString() })
                            .GetAwaiter().GetResult();
                        if (result != null)
                        {
                            if (result is System.Collections.IEnumerable enumerable && !(result is string))
                            {
                                foreach (var item in enumerable)
                                {
                                    WriteObject(item);
                                }
                            }
                            else
                            {
                                WriteObject(result);
                            }
                        }
                    }
                    return;
            }

            var vlanResult = RequestHelper.InvokeRequest("GET", controller, types.Vlan, null, null, identifiers.Count > 0 ? identifiers.ToArray() : null)
                .GetAwaiter().GetResult();

            if (vlanResult != null)
            {
                if (vlanResult is System.Collections.IEnumerable enumerable && !(vlanResult is string))
                {
                    foreach (var item in enumerable)
                    {
                        WriteObject(item);
                    }
                }
                else
                {
                    WriteObject(vlanResult);
                }
            }
        }
        catch (Exception ex)
        {
            WriteError(new ErrorRecord(ex, "GetVlanError", ErrorCategory.InvalidOperation, null));
        }
    }
}