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

namespace Org.BouncyCastle.Asn1.Ocsp;

public class CertID : Asn1Encodable
{
	private readonly AlgorithmIdentifier hashAlgorithm;

	private readonly Asn1OctetString issuerNameHash;

	private readonly Asn1OctetString issuerKeyHash;

	private readonly DerInteger serialNumber;

	public AlgorithmIdentifier HashAlgorithm => hashAlgorithm;

	public Asn1OctetString IssuerNameHash => issuerNameHash;

	public Asn1OctetString IssuerKeyHash => issuerKeyHash;

	public DerInteger SerialNumber => serialNumber;

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

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

	public CertID(AlgorithmIdentifier hashAlgorithm, Asn1OctetString issuerNameHash, Asn1OctetString issuerKeyHash, DerInteger serialNumber)
	{
		this.hashAlgorithm = hashAlgorithm;
		this.issuerNameHash = issuerNameHash;
		this.issuerKeyHash = issuerKeyHash;
		this.serialNumber = serialNumber;
	}

	private CertID(Asn1Sequence seq)
	{
		if (seq.Count != 4)
		{
			throw new ArgumentException("Wrong number of elements in sequence", "seq");
		}
		hashAlgorithm = AlgorithmIdentifier.GetInstance(seq[0]);
		issuerNameHash = Asn1OctetString.GetInstance(seq[1]);
		issuerKeyHash = Asn1OctetString.GetInstance(seq[2]);
		serialNumber = DerInteger.GetInstance(seq[3]);
	}

	public override Asn1Object ToAsn1Object()
	{
		return new DerSequence(hashAlgorithm, issuerNameHash, issuerKeyHash, serialNumber);
	}
}