/*
 * Copyright (c) 2020 EmeraldPay Inc, All Rights Reserved.
 * Copyright (c) 2016-2017 Infinitape Inc, All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.emeraldpay.dshackle.upstream.ethereum.domain;

/**
 * CHAIN_ID for Replay Protection (EIP-155)
 */
public class ChainId {

    private long value;

    public ChainId(long value) {
        this.value = value;
    }

    public long getValue() {
        return value;
    }

    public String toHex() {
        StringBuilder buf = new StringBuilder(4);
        buf.append("0x");
        if (value < 16) {
            buf.append('0');
        }
        buf.append(Long.toHexString(value));
        return buf.toString();
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (!(o instanceof ChainId)) return false;

        ChainId chainId = (ChainId) o;

        return value == chainId.value;
    }

    @Override
    public int hashCode() {
        return (int)value;
    }
}
