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EntitlementObserver.php
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EntitlementObserver.php
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<?php
namespace App\Observers;
use App\Entitlement;
use Carbon\Carbon;
/**
* This is an observer for the Entitlement model definition.
*/
class EntitlementObserver
{
/**
* Handle the "creating" event on an Entitlement.
*
* Ensures that the entry uses a custom ID (uuid).
*
* Ensures that the {@link \App\Wallet} to which it is to be billed is owned or controlled by
* the {@link \App\User} entitled.
*
* @param Entitlement $entitlement The entitlement being created.
*
* @return bool
*/
public function creating(Entitlement $entitlement): bool
{
// can't dispatch job here because it'll fail serialization
// Make sure the owner is at least a controller on the wallet
$wallet = \App\Wallet::find($entitlement->wallet_id);
if (!$wallet || !$wallet->owner) {
return false;
}
$sku = \App\Sku::find($entitlement->sku_id);
if (!$sku) {
return false;
}
$result = $sku->handler_class::preReq($entitlement, $wallet->owner);
if (!$result) {
return false;
}
return true;
}
/**
* Handle the entitlement "created" event.
*
* @param \App\Entitlement $entitlement The entitlement.
*
* @return void
*/
public function created(Entitlement $entitlement)
{
$entitlement->entitleable->updated_at = Carbon::now();
$entitlement->entitleable->save();
$entitlement->createTransaction(\App\Transaction::ENTITLEMENT_CREATED);
}
/**
* Handle the entitlement "deleted" event.
*
* @param \App\Entitlement $entitlement The entitlement.
*
* @return void
*/
public function deleted(Entitlement $entitlement)
{
// Remove all configured 2FA methods from Roundcube database
if ($entitlement->sku->title == '2fa') {
// FIXME: Should that be an async job?
$sf = new \App\Auth\SecondFactor($entitlement->entitleable);
$sf->removeFactors();
}
$entitlement->entitleable->updated_at = Carbon::now();
$entitlement->entitleable->save();
$entitlement->createTransaction(\App\Transaction::ENTITLEMENT_DELETED);
}
/**
* Handle the entitlement "deleting" event.
*
* @param \App\Entitlement $entitlement The entitlement.
*
* @return void
*/
public function deleting(Entitlement $entitlement)
{
if ($entitlement->trashed()) {
return;
}
// Start calculating the costs for the consumption of this entitlement if the
// existing consumption spans >= 14 days.
//
// Effect is that anything's free for the first 14 days
if ($entitlement->created_at >= Carbon::now()->subDays(14)) {
return;
}
$owner = $entitlement->wallet->owner;
// Determine if we're still within the free first month
$freeMonthEnds = $owner->created_at->copy()->addMonthsWithoutOverflow(1);
if ($freeMonthEnds >= Carbon::now()) {
return;
}
$now = Carbon::now();
// get the discount rate applied to the wallet.
$discount = $entitlement->wallet->getDiscountRate();
// just in case this had not been billed yet, ever
$diffInMonths = $entitlement->updated_at->diffInMonths($now);
$cost = (int) ($entitlement->cost * $discount * $diffInMonths);
$fee = (int) ($entitlement->fee * $diffInMonths);
// this moves the hypothetical updated at forward to however many months past the original
$updatedAt = $entitlement->updated_at->copy()->addMonthsWithoutOverflow($diffInMonths);
// now we have the diff in days since the last "billed" period end.
// This may be an entitlement paid up until February 28th, 2020, with today being March
// 12th 2020. Calculating the costs for the entitlement is based on the daily price
// the price per day is based on the number of days in the last month
// or the current month if the period does not overlap with the previous month
// FIXME: This really should be simplified to $daysInMonth=30
$diffInDays = $updatedAt->diffInDays($now);
if ($now->day >= $diffInDays) {
$daysInMonth = $now->daysInMonth;
} else {
$daysInMonth = \App\Utils::daysInLastMonth();
}
$pricePerDay = $entitlement->cost / $daysInMonth;
$feePerDay = $entitlement->fee / $daysInMonth;
$cost += (int) (round($pricePerDay * $discount * $diffInDays, 0));
$fee += (int) (round($feePerDay * $diffInDays, 0));
$profit = $cost - $fee;
if ($profit != 0 && $owner->tenant && ($wallet = $owner->tenant->wallet())) {
$desc = "Charged user {$owner->email}";
$method = $profit > 0 ? 'credit' : 'debit';
$wallet->{$method}(abs($profit), $desc);
}
if ($cost == 0) {
return;
}
$entitlement->wallet->debit($cost);
}
}

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