use of io.bitsquare.gui.main.offer.offerbook.OfferBookListItem in project bitsquare by bitsquare.
the class SpreadViewModel method update.
private void update(ObservableList<OfferBookListItem> offerBookListItems) {
Map<String, List<Offer>> offersByCurrencyMap = new HashMap<>();
for (OfferBookListItem offerBookListItem : offerBookListItems) {
Offer offer = offerBookListItem.getOffer();
String currencyCode = offer.getCurrencyCode();
if (!offersByCurrencyMap.containsKey(currencyCode))
offersByCurrencyMap.put(currencyCode, new ArrayList<>());
offersByCurrencyMap.get(currencyCode).add(offer);
}
spreadItems.clear();
for (String currencyCode : offersByCurrencyMap.keySet()) {
List<Offer> offers = offersByCurrencyMap.get(currencyCode);
List<Offer> buyOffers = offers.stream().filter(e -> e.getDirection().equals(Offer.Direction.BUY)).sorted((o1, o2) -> {
long a = o1.getPrice() != null ? o1.getPrice().value : 0;
long b = o2.getPrice() != null ? o2.getPrice().value : 0;
if (a != b)
return a < b ? 1 : -1;
return 0;
}).collect(Collectors.toList());
List<Offer> sellOffers = offers.stream().filter(e -> e.getDirection().equals(Offer.Direction.SELL)).sorted((o1, o2) -> {
long a = o1.getPrice() != null ? o1.getPrice().value : 0;
long b = o2.getPrice() != null ? o2.getPrice().value : 0;
if (a != b)
return a > b ? 1 : -1;
return 0;
}).collect(Collectors.toList());
Fiat spread = null;
String percentage = "";
Fiat bestSellOfferPrice = sellOffers.isEmpty() ? null : sellOffers.get(0).getPrice();
Fiat bestBuyOfferPrice = buyOffers.isEmpty() ? null : buyOffers.get(0).getPrice();
if (bestBuyOfferPrice != null && bestSellOfferPrice != null) {
MarketPrice marketPrice = priceFeedService.getMarketPrice(currencyCode);
// happens again
try {
spread = bestSellOfferPrice.subtract(bestBuyOfferPrice);
if (spread != null && marketPrice != null) {
double marketPriceAsDouble = marketPrice.getPrice(PriceFeedService.Type.LAST);
if (CurrencyUtil.isFiatCurrency(currencyCode)) {
double result = ((double) spread.value / 10000D) / marketPriceAsDouble;
percentage = " (" + formatter.formatPercentagePrice(result) + ")";
} else {
final double spreadAsDouble = spread.value != 0 ? 10000D / spread.value : 0;
double result = marketPriceAsDouble / spreadAsDouble;
percentage = " (" + formatter.formatPercentagePrice(result) + ")";
}
}
} catch (Throwable t) {
try {
String msg = "An error occurred at the spread calculation.\n" + "Error msg: " + t.toString() + "\n" + "Details of offer data: \n" + "bestSellOfferPrice: " + bestSellOfferPrice.value + "\n" + "bestBuyOfferPrice: " + bestBuyOfferPrice.value + "\n" + "sellOffer getCurrencyCode: " + sellOffers.get(0).getCurrencyCode() + "\n" + "buyOffer getCurrencyCode: " + buyOffers.get(0).getCurrencyCode() + "\n\n" + "Please copy and paste this data and send it to the developers so they can investigate the issue.";
new Popup().error(msg).show();
log.error(t.toString());
t.printStackTrace();
} catch (Throwable t2) {
log.error(t2.toString());
t2.printStackTrace();
}
}
}
Coin totalAmount = Coin.valueOf(offers.stream().mapToLong(offer -> offer.getAmount().getValue()).sum());
spreadItems.add(new SpreadItem(currencyCode, buyOffers.size(), sellOffers.size(), offers.size(), spread, percentage, totalAmount));
}
}
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