edu.zipcloud.cloudstreetmarket.core.util.TransactionUtil.java Source code

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Here is the source code for edu.zipcloud.cloudstreetmarket.core.util.TransactionUtil.java

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/***
 *  Cloudstreetmarket.com is a Spring MVC showcase application developed 
 *  with the book Spring MVC Cookbook [PACKT] (2015). 
 *    Copyright (C) 2015  Alex Bretet
 *  
 *  This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 * 
 *     This program 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 General Public License for more details.
 * 
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 * 
 **/
package edu.zipcloud.cloudstreetmarket.core.util;

import java.math.BigDecimal;

import javax.annotation.Nullable;

import com.google.common.base.Preconditions;

import edu.zipcloud.cloudstreetmarket.core.entities.CurrencyExchange;
import edu.zipcloud.cloudstreetmarket.core.entities.Quote;
import edu.zipcloud.cloudstreetmarket.core.entities.StockQuote;
import edu.zipcloud.cloudstreetmarket.core.entities.User;
import edu.zipcloud.cloudstreetmarket.core.enums.UserActivityType;

public class TransactionUtil {

    public static BigDecimal getPriceInUserCurrency(Quote quote, UserActivityType transactionType, int quantity,
            User user, @Nullable CurrencyExchange currencyExchange) {
        Preconditions.checkNotNull(transactionType);
        Preconditions.checkNotNull(user);
        Preconditions.checkNotNull(quote);
        Preconditions.checkArgument(quote instanceof StockQuote, "Quote type not supported yet");
        Preconditions.checkArgument(
                transactionType.equals(UserActivityType.BUY) || transactionType.equals(UserActivityType.SELL));

        StockQuote stockQuote = (StockQuote) quote;

        BigDecimal priceInUserCurrency;
        if (user.getCurrency().equals(stockQuote.getSupportedCurrency())) {
            priceInUserCurrency = BigDecimal.valueOf(
                    (transactionType.equals(transactionType.BUY) ? stockQuote.getBid() : stockQuote.getAsk())
                            * quantity);
        } else {
            Preconditions.checkNotNull(currencyExchange);
            Preconditions.checkArgument(currencyExchange.getDailyLatestValue() != null);
            Preconditions.checkArgument(currencyExchange.getDailyLatestValue().doubleValue() > 0);

            priceInUserCurrency = currencyExchange.getDailyLatestValue().multiply(BigDecimal.valueOf(
                    (transactionType.equals(transactionType.BUY) ? stockQuote.getBid() : stockQuote.getAsk())
                            * quantity));
        }
        return priceInUserCurrency;
    }

    public static BigDecimal getPrice(Quote quote, UserActivityType transactionType, int quantity) {
        Preconditions.checkNotNull(transactionType);
        Preconditions.checkNotNull(quote);
        Preconditions.checkArgument(quote instanceof StockQuote, "Quote type not supported yet");
        Preconditions.checkArgument(
                transactionType.equals(UserActivityType.BUY) || transactionType.equals(UserActivityType.SELL));

        StockQuote stockQuote = (StockQuote) quote;

        BigDecimal priceInUserCurrency = BigDecimal
                .valueOf((transactionType.equals(transactionType.BUY) ? stockQuote.getBid() : stockQuote.getAsk())
                        * quantity);

        return priceInUserCurrency;
    }
}