jnidzwetzki/bitfinex-v2-wss-api-java

/*******************************************************************************
 *
 *    Copyright (C) 2015-2018 Jan Kristof Nidzwetzki
 *  
 *    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 com.github.jnidzwetzki.bitfinex.v2.symbol;

import com.github.jnidzwetzki.bitfinex.v2.entity.BitfinexCandleTimeFrame;
import com.github.jnidzwetzki.bitfinex.v2.entity.currency.BitfinexCurrencyPair;

public class BitfinexCandlestickSymbol implements BitfinexStreamSymbol {
    
    /**
     * The currency pair
     */
    private final BitfinexCurrencyPair currencyPair;
    
    /**
     * The timeframe
     */
    private final BitfinexCandleTimeFrame timeframe;

    BitfinexCandlestickSymbol(final BitfinexCurrencyPair currencyPair, final BitfinexCandleTimeFrame timeframe) {
        this.currencyPair = currencyPair;
        this.timeframe = timeframe;
    }

    public BitfinexCurrencyPair getCurrencyPair() {
        return currencyPair;
    }

    public BitfinexCandleTimeFrame getTimeframe() {
        return timeframe;
    }
    
    /**
     * To Bitfinex symbol string
     * @return
     */
    public String toBifinexCandlestickString() {
        return "trade:" + timeframe.getBitfinexString() + ":" + currencyPair.toBitfinexString();
    }
    
    /**
     * Construct from Bitfinex string
     * @param symbol
     * @return
     */
    public static BitfinexCandlestickSymbol fromBitfinexString(final String symbol) {
        
        if(! symbol.startsWith("trade:")) {
            throw new IllegalArgumentException("Unable to parse: " + symbol);
        }
        
        final String[] splitString = symbol.split(":");

        if(splitString.length != 3 && splitString.length != 4) {
            throw new IllegalArgumentException("Unable to parse: " + symbol);
        }
        
        final String timeframeString = splitString[1];
        final String symbolString = splitString.length == 3 ? splitString[2] : splitString[2] + ":" + splitString[3];

        return BitfinexSymbols.candlesticks(
                BitfinexCurrencyPair.fromSymbolString(symbolString), 
                BitfinexCandleTimeFrame.fromSymbolString(timeframeString));
    }

    @Override
    public String toString() {
        return "BitfinexCandlestickSymbol [currencyPair=" + currencyPair + ", timeframe=" + timeframe + "]";
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((currencyPair == null) ? 0 : currencyPair.hashCode());
        result = prime * result + ((timeframe == null) ? 0 : timeframe.hashCode());
        return result;
    }

    @Override
    public boolean equals(final Object obj) {
        if (this == obj)
            return true;
        if (obj == null)
            return false;
        if (getClass() != obj.getClass())
            return false;
        final BitfinexCandlestickSymbol other = (BitfinexCandlestickSymbol) obj;
        if (currencyPair == null) {
            if (other.currencyPair != null)
                return false;
        } else if (!currencyPair.equals(other.currencyPair))
            return false;
        if (timeframe != other.timeframe)
            return false;
        return true;
    }
    
    
}