phpvms/app/Cron/Nightly/RecalculateBalances.php

<?php

namespace App\Cron\Nightly;

use App\Contracts\Listener;
use App\Events\CronNightly;
use App\Models\Journal;
use App\Repositories\JournalRepository;
use Log;

/**
 * This recalculates the balances on all of the journals
 */
class RecalculateBalances extends Listener
{
    private $journalRepo;

    /**
     * Nightly constructor.
     *
     * @param JournalRepository $journalRepo
     */
    public function __construct(JournalRepository $journalRepo)
    {
        $this->journalRepo = $journalRepo;
    }

    /**
     * Recalculate all the balances for the different ledgers
     *
     * @param CronNightly $event
     *
     * @throws \UnexpectedValueException
     * @throws \InvalidArgumentException
     */
    public function handle(CronNightly $event): void
    {
        Log::info('Nightly: Recalculating balances');

        $journals = Journal::all();
        foreach ($journals as $journal) {
            $old_balance = $journal->balance;

            $this->journalRepo->recalculateBalance($journal);
            $journal->refresh();

            Log::info('Adjusting balance on '.
                $journal->morphed_type.':'.$journal->morphed_id
                .' from '.$old_balance.' to '.$journal->balance);
        }

        Log::info('Done calculating balances');
    }
}