/**
* Handle the event.
*
* @param TransactionWasCreated $event
* @return void
*/
public function handle($event)
{
switch (class_basename($event)) {
case "TransactionWasCreated":
$transaction = $event->transaction;
// Put an amount into savings if it is an income transaction
if ($transaction->type === Transaction::TYPE_INCOME) {
$savings = Savings::forCurrentUser()->first();
$savings->increase($this->savingsRepository->calculateAfterIncomeAdded($transaction));
}
break;
case "TransactionWasUpdated":
$oldTotal = $event->oldTransaction->total;
if (!isset($event->newTransaction['total']) && !isset($event->newTransaction['type'])) {
return;
}
if (isset($event->newTransaction['total'])) {
$newTotal = $event->newTransaction['total'];
}
$savings = Savings::forCurrentUser()->first();
if (isset($event->newTransaction['type']) && $event->oldTransaction->type !== $event->newTransaction['type']) {
//The transaction type has changed
if ($event->newTransaction['type'] === 'income') {
//Increase the savings
if (isset($event->newTransaction['total'])) {
$savings->increase($event->newTransaction['total'] / 10);
} else {
$savings->increase($event->oldTransaction->total / 10);
}
} else {
if ($event->newTransaction['type'] === 'expense') {
//Decrease the savings
$savings->decrease($event->oldTransaction->total * -1 / 10);
}
}
} else {
//The transaction type is the same
// If it is an income transaction, and if the total has decreased,
// remove a percentage from savings
if ($event->oldTransaction->type === 'income' && $newTotal < $oldTotal) {
$savings->decrease($this->savingsRepository->calculateAfterDecrease($oldTotal, $newTotal));
}
// If it is an income transaction, and if the total has increased,
// add a percentage to savings
if ($event->oldTransaction->type === 'income' && $newTotal > $oldTotal) {
$savings->increase($this->savingsRepository->calculateAfterIncrease($oldTotal, $newTotal));
}
}
break;
default:
}
}
/**
* Delete a transaction, only if it belongs to the user
* @param Transaction $transaction
* @return Response
* @throws \Exception
*/
public function destroy(Transaction $transaction)
{
$transaction->delete();
//Reverse the automatic insertion into savings if it is an income expense
if ($transaction->type === 'income') {
$savings = Savings::forCurrentUser()->first();
$savings->decrease($this->savingsRepository->calculateAmountToSubtract($transaction));
}
return $this->responseNoContent();
}
