public function getBalanceByType($typeId)
{
$type = CreditType::find($typeId);
$transactions = $this->model->transactions()->where('credit_type_id', '=', $type->id)->sum('amount');
$credits = $this->getTotalCreditByType($type->id);
return $credits - $transactions;
}
public function chargeCredits($amount, $typeId)
{
// Check if the type of credit exists
$type = CreditType::find($typeId);
if (!$type) {
return false;
}
// check if the Model has sufficient balance to trade
if ($this->getBalanceByType($type->slug) < $amount) {
throw new InsufficientFundsException($this, $this->id, $this->getBalanceByType($type->id) - $amount);
}
// All fine, take the cash
$transaction = (new Transaction())->fill(['amount' => $amount, 'credit_type_id' => $type->id]);
$this->transactions()->save($transaction);
return $transaction;
}