<?php

namespace App\Domains\Ticketing\Desfile\Services;

use App\Domains\Ticketing\Ticket\Services\EntryReservationPolicy;
use Illuminate\Validation\ValidationException;

class DesfileEntryReservationPolicy implements EntryReservationPolicy
{
    public function validate(array $selections): void
    {
        $errors = [];
        $seen = [];

        foreach ($selections as $index => $selection) {
            $variant = $selection['variant'];
            if ($variant === null || $selection['inventory'] === null
                || isset($seen[$variant->id])
                || $variant->entryReservations()->lockForUpdate()->get()->isNotEmpty()) {
                $errors["rows.{$index}.variant_id"] = 'La entrada ya no está disponible.';
            }
            if ($variant !== null) {
                $seen[$variant->id] = true;
            }
        }

        if ($errors !== []) {
            throw ValidationException::withMessages($errors);
        }
    }
}