WalletObserver.php
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WalletObserver.php
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	<?php

	namespace App\Observers;

	use App\Wallet;

	/**
	* This is an observer for the Wallet model definition.
	*/
	class WalletObserver
	{
	/**
	* Ensure the wallet ID is a custom ID (uuid).
	*
	* @param Wallet $wallet
	*
	* @return void
	*/
	public function creating(Wallet $wallet)
	{
	while (true) {
	$allegedly_unique = \App\Utils::uuidStr();
	if (!Wallet::find($allegedly_unique)) {
	$wallet->{$wallet->getKeyName()} = $allegedly_unique;
	break;
	}
	}
	}

	/**
	* Handle the wallet "deleting" event.
	*
	* Ensures that a wallet with a non-zero balance can not be deleted.
	*
	* Ensures that the wallet being deleted is not the last wallet for the user.
	*
	* Ensures that no entitlements are being billed to the wallet currently.
	*
	* @param Wallet $wallet The wallet being deleted.
	*
	* @return boolean\|null
	*/
	public function deleting(Wallet $wallet)
	{
	// can't delete a wallet that has any balance on it (positive and negative).
	if ($wallet->balance != 0.00) {
	return false;
	}

	if (!$wallet->owner) {
	throw new \Exception("Wallet: " . var_export($wallet, true));
	}

	// can't remove the last wallet for the owner.
	if ($wallet->owner->wallets()->count() <= 1) {
	return false;
	}

	// can't remove a wallet that has billable entitlements attached.
	if ($wallet->entitlements()->count() > 0) {
	return false;
	}
	/*
	// can't remove a wallet that has payments attached.
	if ($wallet->payments()->count() > 0) {
	return false;
	}
	*/
	}
	}