/**
* Adds the given amount of items to the storage, and if notify is true
* posts the change in the balance to the event bus.
*
* @param item the required virtual item
* @param amount the amount of items to add
* @param notify if true posts balance change event
* @return new balance
*/
public int add(VirtualItem item, int amount, bool notify)
{
SoomlaUtils.LogDebug(mTag, "adding " + amount + " " + item.getName());
String itemId = item.getItemId();
int balance = getBalance(item);
if (balance < 0) { /* in case the user "adds" a negative value */
balance = 0;
amount = 0;
}
String balanceStr = (balance + amount).ToString();
String key = keyBalance(itemId);
KeyValueStorage.SetValue(key, balanceStr);
if (notify) {
postBalanceChangeEvent(item, balance+amount, amount);
}
return balance + amount;
}
/**
* Sets the balance of the given virtual item to be the given balance, and if notify is true
* posts the change in the balance to the event bus.
*
* @param item the required virtual item
* @param balance the new balance to be set
* @param notify if notify is true post balance change event
* @return the balance of the required virtual item
*/
public int setBalance(VirtualItem item, int balance, bool notify) {
SoomlaUtils.LogDebug(mTag, "setting balance " + balance + " to " + item.getName() + ".");
int oldBalance = getBalance(item);
if (oldBalance == balance) {
return balance;
}
String itemId = item.getItemId();
String balanceStr = balance.ToString();
String key = keyBalance(itemId);
KeyValueStorage.SetValue(key, balanceStr);
if (notify) {
postBalanceChangeEvent(item, balance, 0);
}
return balance;
}
/**
* Removes the given amount from the given virtual item's balance, and if notify is true
* posts the change in the balance to the event bus.
*
* @param item is the virtual item to remove the given amount from
* @param amount is the amount to remove
* @param notify if notify is true post balance change event
* @return new balance
*/
public int remove(VirtualItem item, int amount, bool notify){
SoomlaUtils.LogDebug(mTag, "Removing " + amount + " " + item.getName() + ".");
String itemId = item.getItemId();
int balance = getBalance(item) - amount;
if (balance < 0) {
balance = 0;
amount = 0;
}
String balanceStr = balance.ToString();
String key = keyBalance(itemId);
KeyValueStorage.SetValue(key, balanceStr);
if (notify) {
postBalanceChangeEvent(item, balance, -1*amount);
}
return balance;
}