<?php
declare(strict_types=1);

namespace Esun\LegacyOrder\Block\Account;

use Magento\Customer\Model\Session;
use Magento\Framework\App\ResourceConnection;
use Magento\Framework\Serialize\Serializer\Json;
use Magento\Framework\View\Element\Template;

class OrderView extends Template
{
    /** @var array<string, mixed>|null */
    private ?array $order = null;

    public function __construct(
        Template\Context $context,
        private readonly Session $customerSession,
        private readonly ResourceConnection $resource,
        private readonly Json $json,
        array $data = []
    ) {
        parent::__construct($context, $data);
    }

    /** @return array<string, mixed> */
    public function getOrder(): array
    {
        if ($this->order !== null) {
            return $this->order;
        }
        $connection = $this->resource->getConnection();
        return $this->order = $connection->fetchRow(
            $connection->select()
                ->from($this->resource->getTableName('esun_legacy_order'))
                ->where('legacy_order_id = ?', (int)$this->getRequest()->getParam('id'))
                ->where('customer_id = ?', (int)$this->customerSession->getCustomerId())
        ) ?: [];
    }

    /** @return array<int, array<string, mixed>> */
    public function getItems(): array
    {
        $order = $this->getOrder();
        if (!$order) {
            return [];
        }
        $connection = $this->resource->getConnection();
        return $connection->fetchAll(
            $connection->select()
                ->from($this->resource->getTableName('esun_legacy_order_item'))
                ->where('legacy_order_id = ?', (int)$order['legacy_order_id'])
                ->order('line_number ASC')
        );
    }

    /** @return array<string, mixed> */
    public function decodeAddress(?string $value): array
    {
        try {
            return $value ? (array)$this->json->unserialize($value) : [];
        } catch (\Throwable) {
            return [];
        }
    }
}