<?php

declare(strict_types=1);

namespace KupShop\PreordersBundle\Util;

use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\DBAL\Driver\Exception;
use KupShop\PreordersBundle\Entity\UserPreorder;
use KupShop\PreordersBundle\Entity\UserPreorderMessage;

/**
 * @extends ArrayCollection<int, UserPreorderMessage>
 */
class UserPreorderMessages extends ArrayCollection implements \JsonSerializable, PersistentCollection
{
    public function __construct(
        private readonly UserPreorder $userPreorder,
    ) {
        $messages = $this->fetchMessages();

        parent::__construct(array_map(
            fn (array $m) => UserPreorderMessage::createFromArray($m),
            $messages,
        ));
    }

    public function save(): ?\Throwable
    {
        $messages = $this->toArray();
        usort($messages, fn (UserPreorderMessage $m0, UserPreorderMessage $m1) => $m0->date <=> $m1->date);

        try {
            UserPreordersDataUtil::upsert($this->userPreorder, messages: $messages);
        } catch (\Doctrine\DBAL\Exception $e) {
            return $e;
        }

        return null;
    }

    private function fetchMessages(): array
    {
        try {
            $data = UserPreordersDataUtil::get($this->userPreorder);
        } catch (\Doctrine\DBAL\Exception|Exception) {
            return [];
        }

        return $data['history'] ?? [];
    }

    public function jsonSerialize(): mixed
    {
        return $this->toArray();
    }
}