namespace PS.IPAM.Cmdlets;

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

/// <summary>
/// Retrieves VLAN information from phpIPAM.
/// </summary>
[Cmdlet(VerbsCommon.Get, "Vlan", DefaultParameterSetName = "NoParams")]
[OutputType(typeof(Vlan))]
public class GetVlanCmdlet : BaseCmdlet
{
    [Parameter(
        Mandatory = true,
        ValueFromPipeline = true,
        ValueFromPipelineByPropertyName = true,
        Position = 0,
        ParameterSetName = "ByID",
        HelpMessage = "The VLAN ID.")]
    [ValidateNotNullOrEmpty]
    public int? Id { get; set; }

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

    [Parameter(
        Mandatory = true,
        ValueFromPipeline = true,
        ValueFromPipelineByPropertyName = true,
        Position = 0,
        ParameterSetName = "ByL2Domain",
        HelpMessage = "The L2 domain ID to get VLANs from.")]
    [ValidateNotNullOrEmpty]
    public int? L2DomainId { get; set; }

    [Parameter(
        Mandatory = false,
        ValueFromPipeline = true,
        ValueFromPipelineByPropertyName = true,
        Position = 0,
        ParameterSetName = "BySubnetObject",
        HelpMessage = "Get the VLAN associated with this subnet.")]
    [ValidateNotNullOrEmpty]
    public Subnetwork? SubnetObject { get; set; }

    [Parameter(
        Mandatory = false,
        ValueFromPipeline = true,
        ValueFromPipelineByPropertyName = true,
        Position = 0,
        ParameterSetName = "ByDomainObject",
        HelpMessage = "Get VLANs in this L2 domain.")]
    [ValidateNotNullOrEmpty]
    public Domain? DomainObject { get; set; }

    protected override void ProcessRecord()
    {
        try
        {
            var controller = ApiController.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 = ApiController.L2Domains;
                    identifiers.Add(L2DomainId!.Value.ToString());
                    identifiers.Add(ApiSubController.Vlans.ToString().ToLowerInvariant());
                    break;

                case "BySubnetObject":
                    if (SubnetObject == null || SubnetObject.VlanId <= 0)
                    {
                        return;
                    }
                    identifiers.Add(SubnetObject.VlanId.ToString());
                    break;

                case "ByDomainObject":
                    if (DomainObject != null)
                    {
                        var result = RequestHelper.InvokeRequest(
                            "GET", ApiController.L2Domains, ModelType.Vlan, ApiSubController.Vlans,
                            null, new[] { DomainObject.Id.ToString() }
                        ).GetAwaiter().GetResult();
                        WriteResult(result);
                    }
                    return;
            }

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

            WriteResult(vlanResult);
        }
        catch (Exception ex)
        {
            WriteError(new ErrorRecord(ex, "GetVlanError", ErrorCategory.InvalidOperation, null));
        }
    }
}