package org.bouncycastle.asn1.ocsp;

import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.DERObject;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.DERTaggedObject;
import org.bouncycastle.asn1.x509.X509Extensions;

public class Request
    extends ASN1Encodable
{
	CertID		    reqCert;
	X509Extensions	singleRequestExtensions;

    public Request(
        CertID          reqCert,
        X509Extensions  singleRequestExtensions)
    {
        this.reqCert = reqCert;
        this.singleRequestExtensions = singleRequestExtensions;
    }

	public Request(
		ASN1Sequence	seq)
	{
		reqCert = CertID.getInstance(seq.getObjectAt(0));

		if (seq.size() == 2)
		{
			singleRequestExtensions = X509Extensions.getInstance(
								(ASN1TaggedObject)seq.getObjectAt(1), true);
		}
	}

    public static Request getInstance(
        ASN1TaggedObject obj,
        boolean          explicit)
    {
        return getInstance(ASN1Sequence.getInstance(obj, explicit));
    }

    public static Request getInstance(
        Object  obj)
    {
        if (obj == null || obj instanceof Request)
        {
            return (Request)obj;
        }
        else if (obj instanceof ASN1Sequence)
        {
            return new Request((ASN1Sequence)obj);
        }

        throw new IllegalArgumentException("unknown object in factory");
    }

	public CertID getReqCert()
	{
		return reqCert;
	}

	public X509Extensions getSingleRequestExtensions()
	{
		return singleRequestExtensions;
	}

	/**
	 * <pre>
	 * Request         ::=     SEQUENCE {
	 *     reqCert                     CertID,
	 *     singleRequestExtensions     [0] EXPLICIT Extensions OPTIONAL }
	 * </pre>
	 */
	public DERObject toASN1Object()
	{
		ASN1EncodableVector	v = new ASN1EncodableVector();

		v.add(reqCert);

		if (singleRequestExtensions != null)
		{
			v.add(new DERTaggedObject(true, 0, singleRequestExtensions));
		}

		return new DERSequence(v);
	}
}
