/**
 * This class file was automatically generated by jASN1 v1.9.0 (http://www.openmuc.org)
 */

package org.openmuc.openiec61850.internal.mms.asn1;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.Serializable;

import org.openmuc.jasn1.ber.BerTag;
import org.openmuc.jasn1.ber.ReverseByteArrayOutputStream;

public class AccessResult implements Serializable {

    private static final long serialVersionUID = 1L;

    public byte[] code = null;
    private DataAccessError failure = null;
    private Data success = null;

    public AccessResult() {
    }

    public AccessResult(byte[] code) {
        this.code = code;
    }

    public void setFailure(DataAccessError failure) {
        this.failure = failure;
    }

    public DataAccessError getFailure() {
        return failure;
    }

    public void setSuccess(Data success) {
        this.success = success;
    }

    public Data getSuccess() {
        return success;
    }

    public int encode(OutputStream os) throws IOException {

        if (code != null) {
            for (int i = code.length - 1; i >= 0; i--) {
                os.write(code[i]);
            }
            return code.length;
        }

        int codeLength = 0;
        if (success != null) {
            codeLength += success.encode(os);
            return codeLength;
        }

        if (failure != null) {
            codeLength += failure.encode(os, false);
            // write tag: CONTEXT_CLASS, PRIMITIVE, 0
            os.write(0x80);
            codeLength += 1;
            return codeLength;
        }

        throw new IOException("Error encoding CHOICE: No element of CHOICE was selected.");
    }

    public int decode(InputStream is) throws IOException {
        return decode(is, null);
    }

    public int decode(InputStream is, BerTag berTag) throws IOException {

        int codeLength = 0;
        BerTag passedTag = berTag;

        if (berTag == null) {
            berTag = new BerTag();
            codeLength += berTag.decode(is);
        }

        if (berTag.equals(BerTag.CONTEXT_CLASS, BerTag.PRIMITIVE, 0)) {
            failure = new DataAccessError();
            codeLength += failure.decode(is, false);
            return codeLength;
        }

        success = new Data();
        int choiceDecodeLength = success.decode(is, berTag);
        if (choiceDecodeLength != 0) {
            return codeLength + choiceDecodeLength;
        }
        else {
            success = null;
        }

        if (passedTag != null) {
            return 0;
        }

        throw new IOException("Error decoding CHOICE: Tag " + berTag + " matched to no item.");
    }

    public void encodeAndSave(int encodingSizeGuess) throws IOException {
        ReverseByteArrayOutputStream os = new ReverseByteArrayOutputStream(encodingSizeGuess);
        encode(os);
        code = os.getArray();
    }

    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        appendAsString(sb, 0);
        return sb.toString();
    }

    public void appendAsString(StringBuilder sb, int indentLevel) {

        if (failure != null) {
            sb.append("failure: ").append(failure);
            return;
        }

        if (success != null) {
            sb.append("success: ");
            success.appendAsString(sb, indentLevel + 1);
            return;
        }

        sb.append("<none>");
    }

}