/**
 * This class file was automatically generated by jASN1 v1.8.2 (http://www.openmuc.org)
 */

package org.onosproject.xran.asn1lib.pdu;


import com.fasterxml.jackson.annotation.JsonIgnore;
import org.onosproject.xran.asn1lib.api.*;
import org.onosproject.xran.asn1lib.ber.BerByteArrayOutputStream;
import org.onosproject.xran.asn1lib.ber.BerLength;
import org.onosproject.xran.asn1lib.ber.BerTag;
import org.onosproject.xran.asn1lib.ber.types.BerInteger;
import org.onosproject.xran.asn1lib.ber.types.string.BerUTF8String;

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

public class BearerAdmissionResponse implements Serializable {

    public static final BerTag tag = new BerTag(BerTag.UNIVERSAL_CLASS, BerTag.CONSTRUCTED, 16);
    private static final long serialVersionUID = 1L;
    @JsonIgnore
    public byte[] code = null;
    private CRNTI crnti = null;
    private ECGI ecgi = null;
    private BerInteger numErabList = null;
    private ERABResponse erabResponse = null;

    public BearerAdmissionResponse() {
    }

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

    public static XrancPdu constructPacket(ECGI ecgi, CRNTI crnti, ERABParams erabParams, BerInteger numParams, boolean b) {
        ERABResponse erabResponse = new ERABResponse();

        for (int i = 0; i < numParams.intValue(); i++) {
            ERABParamsItem erabParamsItem = erabParams.getERABParamsItem().get(i);

            ERABResponseItem responseItem = new ERABResponseItem();
            responseItem.setId(erabParamsItem.getId());

            // FIXME: add logic
            responseItem.setDecision(new ERABDecision(b ? 0 : 1));

            erabResponse.getERABResponseItem().add(responseItem);
        }


        BearerAdmissionResponse bearerAdmissionResponse = new BearerAdmissionResponse();
        bearerAdmissionResponse.setCrnti(crnti);
        bearerAdmissionResponse.setEcgi(ecgi);
        bearerAdmissionResponse.setErabResponse(erabResponse);
        bearerAdmissionResponse.setNumErabList(numParams);

        XrancPduBody body = new XrancPduBody();
        body.setBearerAdmissionResponse(bearerAdmissionResponse);

        BerUTF8String ver = null;
        try {
            ver = new BerUTF8String("5");
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        XrancApiID apiID = new XrancApiID(9);
        XrancPduHdr hdr = new XrancPduHdr();
        hdr.setVer(ver);
        hdr.setApiId(apiID);

        XrancPdu pdu = new XrancPdu();
        pdu.setHdr(hdr);
        pdu.setBody(body);

        return pdu;
    }

    public CRNTI getCrnti() {
        return crnti;
    }

    public void setCrnti(CRNTI crnti) {
        this.crnti = crnti;
    }

    public ECGI getEcgi() {
        return ecgi;
    }

    public void setEcgi(ECGI ecgi) {
        this.ecgi = ecgi;
    }

    public BerInteger getNumErabList() {
        return numErabList;
    }

    public void setNumErabList(BerInteger numErabList) {
        this.numErabList = numErabList;
    }

    public ERABResponse getErabResponse() {
        return erabResponse;
    }

    public void setErabResponse(ERABResponse erabResponse) {
        this.erabResponse = erabResponse;
    }

    public int encode(BerByteArrayOutputStream os) throws IOException {
        return encode(os, true);
    }

    public int encode(BerByteArrayOutputStream os, boolean withTag) throws IOException {

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

        int codeLength = 0;
        codeLength += erabResponse.encode(os, false);
        // write tag: CONTEXT_CLASS, CONSTRUCTED, 3
        os.write(0xA3);
        codeLength += 1;

        codeLength += numErabList.encode(os, false);
        // write tag: CONTEXT_CLASS, PRIMITIVE, 2
        os.write(0x82);
        codeLength += 1;

        codeLength += ecgi.encode(os, false);
        // write tag: CONTEXT_CLASS, CONSTRUCTED, 1
        os.write(0xA1);
        codeLength += 1;

        codeLength += crnti.encode(os, false);
        // write tag: CONTEXT_CLASS, PRIMITIVE, 0
        os.write(0x80);
        codeLength += 1;

        codeLength += BerLength.encodeLength(os, codeLength);

        if (withTag) {
            codeLength += tag.encode(os);
        }

        return codeLength;

    }

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

    public int decode(InputStream is, boolean withTag) throws IOException {
        int codeLength = 0;
        int subCodeLength = 0;
        BerTag berTag = new BerTag();

        if (withTag) {
            codeLength += tag.decodeAndCheck(is);
        }

        BerLength length = new BerLength();
        codeLength += length.decode(is);

        int totalLength = length.val;
        codeLength += totalLength;

        subCodeLength += berTag.decode(is);
        if (berTag.equals(BerTag.CONTEXT_CLASS, BerTag.PRIMITIVE, 0)) {
            crnti = new CRNTI();
            subCodeLength += crnti.decode(is, false);
            subCodeLength += berTag.decode(is);
        } else {
            throw new IOException("Tag does not match the mandatory sequence element tag.");
        }

        if (berTag.equals(BerTag.CONTEXT_CLASS, BerTag.CONSTRUCTED, 1)) {
            ecgi = new ECGI();
            subCodeLength += ecgi.decode(is, false);
            subCodeLength += berTag.decode(is);
        } else {
            throw new IOException("Tag does not match the mandatory sequence element tag.");
        }

        if (berTag.equals(BerTag.CONTEXT_CLASS, BerTag.PRIMITIVE, 2)) {
            numErabList = new BerInteger();
            subCodeLength += numErabList.decode(is, false);
            subCodeLength += berTag.decode(is);
        } else {
            throw new IOException("Tag does not match the mandatory sequence element tag.");
        }

        if (berTag.equals(BerTag.CONTEXT_CLASS, BerTag.CONSTRUCTED, 3)) {
            erabResponse = new ERABResponse();
            subCodeLength += erabResponse.decode(is, false);
            if (subCodeLength == totalLength) {
                return codeLength;
            }
        }
        throw new IOException("Unexpected end of sequence, length tag: " + totalLength + ", actual sequence length: " + subCodeLength);


    }

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

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

    public void appendAsString(StringBuilder sb, int indentLevel) {

        sb.append("{");
        sb.append("\n");
        for (int i = 0; i < indentLevel + 1; i++) {
            sb.append("\t");
        }
        if (crnti != null) {
            sb.append("crnti: ").append(crnti);
        } else {
            sb.append("crnti: <empty-required-field>");
        }

        sb.append(",\n");
        for (int i = 0; i < indentLevel + 1; i++) {
            sb.append("\t");
        }
        if (ecgi != null) {
            sb.append("ecgi: ");
            ecgi.appendAsString(sb, indentLevel + 1);
        } else {
            sb.append("ecgi: <empty-required-field>");
        }

        sb.append(",\n");
        for (int i = 0; i < indentLevel + 1; i++) {
            sb.append("\t");
        }
        if (numErabList != null) {
            sb.append("numErabList: ").append(numErabList);
        } else {
            sb.append("numErabList: <empty-required-field>");
        }

        sb.append(",\n");
        for (int i = 0; i < indentLevel + 1; i++) {
            sb.append("\t");
        }
        if (erabResponse != null) {
            sb.append("erabResponse: ");
            erabResponse.appendAsString(sb, indentLevel + 1);
        } else {
            sb.append("erabResponse: <empty-required-field>");
        }

        sb.append("\n");
        for (int i = 0; i < indentLevel; i++) {
            sb.append("\t");
        }
        sb.append("}");
    }
}