EntitlementObserver.php
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EntitlementObserver.php
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	<?php

	namespace App\Observers;

	use App\Entitlement;

	/**
	* 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 void
	*/
	public function creating(Entitlement $entitlement)
	{
	while (true) {
	$allegedly_unique = \App\Utils::uuidStr();
	if (!Entitlement::find($allegedly_unique)) {
	$entitlement->{$entitlement->getKeyName()} = $allegedly_unique;
	break;
	}
	}

	// can't dispatch job here because it'll fail serialization

	// Make sure the owner is at least a controller on the wallet
	$owner = \App\User::find($entitlement->owner_id);
	$wallet = \App\Wallet::find($entitlement->wallet_id);

	if (!$owner) {
	return false;
	}

	if (!$wallet) {
	return false;
	}

	if (!$wallet->owner() == $owner) {
	if (!$wallet->controllers->contains($owner)) {
	return false;
	}
	}

	$sku = \App\Sku::find($entitlement->sku_id);

	if (!$sku) {
	return false;
	}

	$result = $sku->handler_class::preReq($entitlement, $owner);

	if (!$result) {
	return false;
	}

	// TODO: Handle the first free unit here?

	// TODO: Execute the Sku handler class or function?

	$wallet->debit($sku->cost);
	}
	}