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/*
 * Copyright (C) 2018 The DNA Authors
 * This file is part of The DNA library.
 *
 *  The DNA is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  The DNA is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with The DNA.  If not, see .
 *
 */

package com.github.DNAProject.core.payload;

import com.github.DNAProject.common.Address;
import com.github.DNAProject.common.Helper;
import com.github.DNAProject.core.transaction.TransactionType;
import com.github.DNAProject.io.BinaryWriter;
import com.github.DNAProject.core.transaction.Transaction;
import com.github.DNAProject.crypto.ECC;
import com.github.DNAProject.io.BinaryReader;
import org.bouncycastle.math.ec.ECPoint;

import java.io.IOException;
import java.math.BigInteger;

/**
 *
 */
public class Enrollment extends Transaction {
    public ECPoint pubKey;

    public Enrollment() {
        super(TransactionType.Enrollment);
    }

    @Override
    protected void deserializeExclusiveData(BinaryReader reader) throws IOException {
        try {
            pubKey = ECC.secp256r1.getCurve().createPoint(
                    new BigInteger(1, reader.readVarBytes()), new BigInteger(1, reader.readVarBytes()));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    @Override
    public Address[] getAddressU160ForVerifying() {
        return null;
    }

    @Override
    protected void serializeExclusiveData(BinaryWriter writer) throws IOException {
        writer.writeVarBytes(Helper.removePrevZero(pubKey.getXCoord().toBigInteger().toByteArray()));
        writer.writeVarBytes(Helper.removePrevZero(pubKey.getYCoord().toBigInteger().toByteArray()));
    }
}