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

namespace Org.BouncyCastle.Asn1.Esf;

public class OtherCertID : Asn1Encodable
{
	private readonly OtherHash otherCertHash;

	private readonly IssuerSerial issuerSerial;

	public OtherHash OtherCertHash => otherCertHash;

	public IssuerSerial IssuerSerial => issuerSerial;

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

	private OtherCertID(Asn1Sequence seq)
	{
		if (seq == null)
		{
			throw new ArgumentNullException("seq");
		}
		if (seq.Count < 1 || seq.Count > 2)
		{
			throw new ArgumentException("Bad sequence size: " + seq.Count, "seq");
		}
		otherCertHash = OtherHash.GetInstance(seq[0].ToAsn1Object());
		if (seq.Count > 1)
		{
			issuerSerial = IssuerSerial.GetInstance(seq[1].ToAsn1Object());
		}
	}

	public OtherCertID(OtherHash otherCertHash)
		: this(otherCertHash, null)
	{
	}

	public OtherCertID(OtherHash otherCertHash, IssuerSerial issuerSerial)
	{
		if (otherCertHash == null)
		{
			throw new ArgumentNullException("otherCertHash");
		}
		this.otherCertHash = otherCertHash;
		this.issuerSerial = issuerSerial;
	}

	public override Asn1Object ToAsn1Object()
	{
		Asn1EncodableVector asn1EncodableVector = new Asn1EncodableVector(otherCertHash.ToAsn1Object());
		if (issuerSerial != null)
		{
			asn1EncodableVector.Add(issuerSerial.ToAsn1Object());
		}
		return new DerSequence(asn1EncodableVector);
	}
}