/**
* Returns an integer indicating the maximum number of coins available of a specific type.
*
* @param difference Amount between the money provided and the product price.
* @param coin Current coin in the Map<Coin,Integer>
* @param changeLimits Indicated whether there is an unlimited supply of change in the machine or
* not.
* @return Integer indicating the maximum amount of coins available for distribution.
*/
private int getCap(int difference, Coin coin, boolean changeLimits) {
int capExact = difference / coin.getValueAsInt();
if (changeLimits) {
int capMachine = availableChangeMachine.get(coin);
if (capExact >= capMachine) {
return capMachine;
}
}
return capExact;
}
/**
* Checks if the current coin in the Map<Coin,Integer> needs to be added to the changeInProgress.
*
* @param coin Current coin in the Map<Coin,Integer>
* @param difference Amount between the money provided and the product price.
* @return True if the current coin fits the criteria for the return change.
*/
private boolean isCoinTypeNeeded(Coin coin, int difference) {
return difference / coin.getValueAsInt() > 0;
}