Caramel-CRM/app/Console/Commands/CaldavSyncCommand.php

<?php

namespace App\Console\Commands;

use Illuminate\Console\Command;
use Illuminate\Support\Facades\Log;
use Illuminate\Support\Facades\Cache;
use App\Services\CaldavService;
use App\Models\Todo;

class CaldavSyncCommand extends Command
{
    protected $signature = 'caldav:sync';
    protected $description = 'Sync CalDAV VTODOs into local todos table';

    public function handle(CaldavService $service)
    {
        // only run every 5 minutes although the task is called every minute
        $cacheKey = 'caldav_sync_last_run';
        if (\Illuminate\Support\Facades\Cache::has($cacheKey)) {
            return 0;
        }
        Cache::put($cacheKey, true, 300);

        Log::info('Running CalDAV sync');
        $this->info('Starting CalDAV sync');

        $todos = $service->getTodos();

        $count = 0;
        foreach ($todos as $todo) {
            Todo::upsert($todo->attributesToArray(), 'id');
            $count++;
        }

        $this->info("Synced " . count($todos) . " todos.");
        return 0;
    }
}