LAR_Maintenance/app/Jobs/ScheduleNextMaintenance.php

<?php

namespace App\Jobs;

use App\Models\Maintenance;
use App\Models\MaintenanceHistory;
use Cron\CronExpression;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Foundation\Bus\Dispatchable;
use Illuminate\Foundation\Queue\Queueable;
use Illuminate\Queue\InteractsWithQueue;
use Illuminate\Queue\SerializesModels;

class ScheduleNextMaintenance implements ShouldQueue
{
    use Queueable;

    /**
     * Create a new job instance.
     */
    public function __construct()
    {
        //
    }

    /**
     * Execute the job.
     */
    public function handle(): void
    {
        $maintenances = Maintenance::all();
        foreach ($maintenances as $maintenance) {
            $valid = CronExpression::isValidExpression($maintenance->schedule);
            if (!$valid) {
                dd($maintenance->schedule);
                return;
            }

            $cron = new CronExpression($maintenance->schedule);
            $maintenancePlanned = $maintenance->history()->create([
                'start_at' => $cron->getNextRunDate(null, 2)
            ]);
            $maintenancePlanned->refresh();
            
            $tasks = $maintenancePlanned->tasks;
            if(!empty($tasks)){
                dd($tasks);
                foreach ($tasks as $key => $task) {
                    $maintenancePlanned->tasks()->create([
                        'host_id' => $task->host_id,
                    ]);
                }
            }
          
        }
        die();
    }
}