<?php

namespace Modules\Maintenance\Services;

use App\Business;
use Modules\Maintenance\Models\WorkOrder;

class WorkOrderService
{
    public function generateNumber(Business $business): string
    {
        $prefix = 'WO-'.now()->format('Ym').'-';
        $last = WorkOrder::withTrashed()
            ->where('business_id', $business->id)
            ->where('work_order_number', 'like', $prefix.'%')
            ->orderByDesc('id')
            ->value('work_order_number');

        $seq = 1;
        if ($last && preg_match('/-(\d+)$/', $last, $m)) {
            $seq = (int) $m[1] + 1;
        }

        return $prefix.str_pad((string) $seq, 4, '0', STR_PAD_LEFT);
    }
}