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

namespace Org.BouncyCastle.Asn1.Esf;

public class OtherSigningCertificate : Asn1Encodable
{
	private readonly Asn1Sequence certs;

	private readonly Asn1Sequence policies;

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

	private OtherSigningCertificate(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");
		}
		certs = Asn1Sequence.GetInstance(seq[0].ToAsn1Object());
		if (seq.Count > 1)
		{
			policies = Asn1Sequence.GetInstance(seq[1].ToAsn1Object());
		}
	}

	public OtherSigningCertificate(params OtherCertID[] certs)
		: this(certs, (PolicyInformation[])null)
	{
	}

	public OtherSigningCertificate(OtherCertID[] certs, params PolicyInformation[] policies)
	{
		if (certs == null)
		{
			throw new ArgumentNullException("certs");
		}
		this.certs = new DerSequence(certs);
		if (policies != null)
		{
			this.policies = new DerSequence(policies);
		}
	}

	public OtherSigningCertificate(IEnumerable certs)
		: this(certs, null)
	{
	}

	public OtherSigningCertificate(IEnumerable certs, IEnumerable policies)
	{
		if (certs == null)
		{
			throw new ArgumentNullException("certs");
		}
		if (!CollectionUtilities.CheckElementsAreOfType(certs, typeof(OtherCertID)))
		{
			throw new ArgumentException("Must contain only 'OtherCertID' objects", "certs");
		}
		this.certs = new DerSequence(Asn1EncodableVector.FromEnumerable(certs));
		if (policies != null)
		{
			if (!CollectionUtilities.CheckElementsAreOfType(policies, typeof(PolicyInformation)))
			{
				throw new ArgumentException("Must contain only 'PolicyInformation' objects", "policies");
			}
			this.policies = new DerSequence(Asn1EncodableVector.FromEnumerable(policies));
		}
	}

	public OtherCertID[] GetCerts()
	{
		OtherCertID[] array = new OtherCertID[certs.Count];
		for (int i = 0; i < certs.Count; i++)
		{
			array[i] = OtherCertID.GetInstance(certs[i].ToAsn1Object());
		}
		return array;
	}

	public PolicyInformation[] GetPolicies()
	{
		if (policies == null)
		{
			return null;
		}
		PolicyInformation[] array = new PolicyInformation[policies.Count];
		for (int i = 0; i < policies.Count; i++)
		{
			array[i] = PolicyInformation.GetInstance(policies[i].ToAsn1Object());
		}
		return array;
	}

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