<?php
declare(strict_types=1);

namespace Esun\LingxingErp\Model\Sync;

use Magento\Framework\App\ResourceConnection;
use Magento\Sales\Api\Data\OrderInterface;
use Magento\Sales\Model\Order;

class OrderSyncRepository
{
    private string $table;

    public function __construct(private readonly ResourceConnection $resource)
    {
        $this->table = $resource->getTableName('esun_lingxing_order_sync');
    }

    public function enqueue(OrderInterface $order): void
    {
        $connection = $this->resource->getConnection();
        $exists = $connection->fetchOne(
            $connection->select()->from($this->table, ['entity_id'])->where('order_id = ?', (int)$order->getEntityId())
        );
        if ($exists) {
            return;
        }
        $now = gmdate('Y-m-d H:i:s');
        $connection->insert($this->table, [
            'order_id' => (int)$order->getEntityId(),
            'increment_id' => (string)$order->getIncrementId(),
            'platform_order_no' => (string)$order->getIncrementId(),
            'status' => 'pending',
            'created_at' => $now,
            'updated_at' => $now,
        ]);
    }

    public function getDue(int $limit): array
    {
        $connection = $this->resource->getConnection();
        return $connection->fetchAll($connection->select()->from($this->table)
            ->where('status IN (?)', ['pending', 'retrying'])
            ->where('next_retry_at IS NULL OR next_retry_at <= ?', gmdate('Y-m-d H:i:s'))
            ->order('entity_id ASC')->limit($limit));
    }

    public function claim(int $entityId): bool
    {
        return $this->resource->getConnection()->update(
            $this->table,
            ['status' => 'processing', 'last_attempt_at' => gmdate('Y-m-d H:i:s')],
            ['entity_id = ?' => $entityId, 'status IN (?)' => ['pending', 'retrying']]
        ) === 1;
    }

    public function markSuccess(int $entityId, string $globalOrderNo, string $requestId, string $payloadHash): void
    {
        $now = gmdate('Y-m-d H:i:s');
        $this->resource->getConnection()->update($this->table, [
            'global_order_no' => $globalOrderNo,
            'status' => 'success',
            'request_id' => $requestId ?: null,
            'payload_hash' => $payloadHash,
            'last_error_code' => null,
            'last_error_message' => null,
            'next_retry_at' => null,
            'synced_at' => $now,
            'updated_at' => $now,
        ], ['entity_id = ?' => $entityId]);
    }

    public function markCreationCanceled(int $entityId): void
    {
        $now = gmdate('Y-m-d H:i:s');
        $this->resource->getConnection()->update($this->table, [
            'status' => 'canceled',
            'next_retry_at' => null,
            'updated_at' => $now,
        ], ['entity_id = ?' => $entityId]);
    }

    public function markFailure(int $entityId, int $attemptCount, int $maxAttempts, string $code, string $message, string $requestId = ''): string
    {
        $attemptCount++;
        $status = $attemptCount >= $maxAttempts ? 'failed' : 'retrying';
        $delay = min(3600, 30 * (2 ** min(7, max(0, $attemptCount - 1))));
        $this->resource->getConnection()->update($this->table, [
            'status' => $status,
            'attempt_count' => $attemptCount,
            'next_retry_at' => $status === 'retrying' ? gmdate('Y-m-d H:i:s', time() + $delay) : null,
            'last_error_code' => $code ?: null,
            'last_error_message' => mb_substr($message, 0, 65535),
            'request_id' => $requestId ?: null,
            'updated_at' => gmdate('Y-m-d H:i:s'),
        ], ['entity_id = ?' => $entityId]);
        return $status;
    }

    public function findByGlobalOrderNo(string $globalOrderNo): ?array
    {
        $connection = $this->resource->getConnection();
        $row = $connection->fetchRow($connection->select()->from($this->table)
            ->where('global_order_no = ?', $globalOrderNo)->limit(1));
        return is_array($row) ? $row : null;
    }

    public function findByIncrementId(string $incrementId): ?array
    {
        $connection = $this->resource->getConnection();
        $row = $connection->fetchRow($connection->select()->from($this->table)
            ->where('increment_id = ?', $incrementId)->limit(1));
        return is_array($row) ? $row : null;
    }

    /** @return string[] */
    public function getTrackablePlatformOrderNos(): array
    {
        $connection = $this->resource->getConnection();
        $salesOrderTable = $this->resource->getTableName('sales_order');
        $select = $connection->select()
            ->from(['sync' => $this->table], ['platform_order_no'])
            ->joinInner(['sales_order' => $salesOrderTable], 'sales_order.entity_id = sync.order_id', [])
            ->where('sync.status = ?', 'success')
            ->where('sync.platform_order_no <> ?', '')
            ->where('sales_order.state NOT IN (?)', [
                Order::STATE_COMPLETE,
                Order::STATE_CLOSED,
                Order::STATE_CANCELED,
            ])
            ->order('sync.entity_id ASC');
        return array_values(array_unique(array_map('strval', $connection->fetchCol($select))));
    }

    public function retry(int $entityId): bool
    {
        return $this->resource->getConnection()->update($this->table, [
            'status' => 'pending',
            'attempt_count' => 0,
            'next_retry_at' => null,
            'last_error_code' => null,
            'last_error_message' => null,
            'updated_at' => gmdate('Y-m-d H:i:s'),
        ], ['entity_id = ?' => $entityId, 'status IN (?)' => ['failed', 'retrying']]) === 1;
    }
}