using System;
using Org.BouncyCastle.Asn1.X509;
using Org.BouncyCastle.Utilities;

namespace Org.BouncyCastle.Asn1.Ocsp;

public class Request : Asn1Encodable
{
	private readonly CertID reqCert;

	private readonly X509Extensions singleRequestExtensions;

	public CertID ReqCert => reqCert;

	public X509Extensions SingleRequestExtensions => singleRequestExtensions;

	public static Request GetInstance(Asn1TaggedObject obj, bool explicitly)
	{
		return GetInstance(Asn1Sequence.GetInstance(obj, explicitly));
	}

	public static Request GetInstance(object obj)
	{
		if (obj == null || obj is Request)
		{
			return (Request)obj;
		}
		if (obj is Asn1Sequence)
		{
			return new Request((Asn1Sequence)obj);
		}
		throw new ArgumentException("unknown object in factory: " + Platform.GetTypeName(obj), "obj");
	}

	public Request(CertID reqCert, X509Extensions singleRequestExtensions)
	{
		if (reqCert == null)
		{
			throw new ArgumentNullException("reqCert");
		}
		this.reqCert = reqCert;
		this.singleRequestExtensions = singleRequestExtensions;
	}

	private Request(Asn1Sequence seq)
	{
		reqCert = CertID.GetInstance(seq[0]);
		if (seq.Count == 2)
		{
			singleRequestExtensions = X509Extensions.GetInstance((Asn1TaggedObject)seq[1], explicitly: true);
		}
	}

	public override Asn1Object ToAsn1Object()
	{
		Asn1EncodableVector asn1EncodableVector = new Asn1EncodableVector(reqCert);
		if (singleRequestExtensions != null)
		{
			asn1EncodableVector.Add(new DerTaggedObject(explicitly: true, 0, singleRequestExtensions));
		}
		return new DerSequence(asn1EncodableVector);
	}
}