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

namespace Org.BouncyCastle.Asn1.Pkcs;

public class IssuerAndSerialNumber : Asn1Encodable
{
	private readonly X509Name name;

	private readonly DerInteger certSerialNumber;

	public X509Name Name => name;

	public DerInteger CertificateSerialNumber => certSerialNumber;

	public static IssuerAndSerialNumber GetInstance(object obj)
	{
		if (obj is IssuerAndSerialNumber)
		{
			return (IssuerAndSerialNumber)obj;
		}
		if (obj is Asn1Sequence)
		{
			return new IssuerAndSerialNumber((Asn1Sequence)obj);
		}
		throw new ArgumentException("Unknown object in factory: " + Platform.GetTypeName(obj), "obj");
	}

	private IssuerAndSerialNumber(Asn1Sequence seq)
	{
		if (seq.Count != 2)
		{
			throw new ArgumentException("Wrong number of elements in sequence", "seq");
		}
		name = X509Name.GetInstance(seq[0]);
		certSerialNumber = DerInteger.GetInstance(seq[1]);
	}

	public IssuerAndSerialNumber(X509Name name, BigInteger certSerialNumber)
	{
		this.name = name;
		this.certSerialNumber = new DerInteger(certSerialNumber);
	}

	public IssuerAndSerialNumber(X509Name name, DerInteger certSerialNumber)
	{
		this.name = name;
		this.certSerialNumber = certSerialNumber;
	}

	public override Asn1Object ToAsn1Object()
	{
		return new DerSequence(name, certSerialNumber);
	}
}