/**
* Exchange money calculator
*
* @param from
* @param to
* @param amount
* @return
*/
public String exchange(String from, String to, double amount) {
JSONObject json = new JSONObject();
try {
json.put("success", true);
json.put("result", converter.convert(from, to, amount).toString());
} catch (JSONException e) {
e
.printStackTrace(); // To change body of catch statement use File | Settings | File
// Templates.
}
return json.toString();
}
/**
* Transfer money from current to another card
*
* @param destCardId
* @param amount
* @param r
* @return result in JSON format
*/
@Transactional
public String transferMoney(Integer destCardId, double amount, HttpServletRequest r) {
Card toCard = cardService.getCard(destCardId);
double currentAmount = currentCard.getAmount();
JSONObject json = new JSONObject();
if (currentAmount < amount) {
try {
json.put("sucess", false);
json.put("result", "Недостаточно средств.");
} catch (JSONException e) {
e
.printStackTrace(); // To change body of catch statement use File | Settings | File
// Templates.
}
} else {
currentCard.setAmount(currentAmount - amount);
double newAmount = converter.convert(currentCard.getCurrency(), toCard.getCurrency(), amount);
toCard.setAmount(toCard.getAmount() + newAmount);
Invoice invoice = currentCard.createInvoice();
invoice.setToCard(destCardId);
invoice.setAmount(newAmount);
String date =
new SimpleDateFormat("dd.MM.yyyy-hh.mm-a")
.format(GregorianCalendar.getInstance().getTime());
invoice.setDate(date);
invoice.setCurrency(toCard.getCurrency());
invoiceService.addInvoice(invoice);
try {
json.put("sucess", true);
json.put("result", "Успешно.");
} catch (JSONException e) {
e
.printStackTrace(); // To change body of catch statement use File | Settings | File
// Templates.
}
}
cardService.update(currentCard);
r.getSession().setAttribute("Card", currentCard);
cardService.update(toCard);
return json.toString();
}