using System;

using Org.BouncyCastle.Utilities;

namespace Org.BouncyCastle.Asn1.Cmp
{
	public class PollRepContent
		: Asn1Encodable
	{
		private readonly DerInteger certReqId;
		private readonly DerInteger checkAfter;
		private readonly PkiFreeText reason;

		private PollRepContent(Asn1Sequence seq)
		{
			certReqId = DerInteger.GetInstance(seq[0]);
			checkAfter = DerInteger.GetInstance(seq[1]);

			if (seq.Count > 2)
			{
				reason = PkiFreeText.GetInstance(seq[2]);
			}
		}

		public static PollRepContent GetInstance(object obj)
		{
			if (obj is PollRepContent)
				return (PollRepContent)obj;

			if (obj is Asn1Sequence)
				return new PollRepContent((Asn1Sequence)obj);

            throw new ArgumentException("Invalid object: " + Platform.GetTypeName(obj), "obj");
		}

	    public PollRepContent(
	        DerInteger certReqId,
	        DerInteger checkAfter)
	    {
	        this.certReqId = certReqId;
	        this.checkAfter = checkAfter;
	        this.reason = null;
	    }

        public PollRepContent(
	        DerInteger certReqId,
	        DerInteger checkAfter,
	        PkiFreeText reason)
	    {
	        this.certReqId = certReqId;
	        this.checkAfter = checkAfter;
	        this.reason = reason;
	    }

		public virtual DerInteger CertReqID
		{
			get { return certReqId; }
		}

		public virtual DerInteger CheckAfter
		{
			get { return checkAfter; }
		}

		public virtual PkiFreeText Reason
		{
			get { return reason; }
		}

		/**
		 * <pre>
		 * PollRepContent ::= SEQUENCE OF SEQUENCE {
		 *         certReqId              INTEGER,
		 *         checkAfter             INTEGER,  -- time in seconds
		 *         reason                 PKIFreeText OPTIONAL
		 *     }
		 * </pre>
		 * @return a basic ASN.1 object representation.
		 */
		public override Asn1Object ToAsn1Object()
		{
			Asn1EncodableVector v = new Asn1EncodableVector(certReqId, checkAfter);
			v.AddOptional(reason);
			return new DerSequence(v);
		}
	}
}