<?php

namespace App\Module\Transfer\Jobs;

use App\Module\Transfer\Models\TransferOrder;
use App\Module\Transfer\Enums\TransferStatus;
use App\Module\Transfer\Logics\OrderLogic;
use UCore\Queue\QueueJob;
use Illuminate\Support\Facades\Log;

/**
 * 重试失败订单任务
 */
class RetryFailedOrderJob extends QueueJob
{

    /**
     * 任务最大尝试次数
     * 
     * @var int
     */
    public $tries = 3;

    /**
     * 任务超时时间（秒）
     * 
     * @var int
     */
    public $timeout = 300;

    /**
     * 订单ID
     * 
     * @var int
     */
    protected int $orderId;

    /**
     * 重试原因
     * 
     * @var string|null
     */
    protected ?string $retryReason;

    /**
     * 创建任务实例
     *
     * @param int $orderId 订单ID
     * @param string|null $retryReason 重试原因
     */
    public function __construct(int $orderId, ?string $retryReason = null)
    {
        $this->orderId = $orderId;
        $this->retryReason = $retryReason;
        parent::__construct(['order_id' => $orderId, 'retry_reason' => $retryReason]);
    }

    /**
     * 执行任务
     *
     * @return bool
     */
    public function run(): bool
    {
        try {
            // 获取订单
            $order = TransferOrder::find($this->orderId);
            if (!$order) {
                Log::warning('Retry failed order job: Order not found', [
                    'order_id' => $this->orderId
                ]);
                return false;
            }

            // 检查订单状态是否可以重试
            if (!$order->canRetry()) {
                Log::info('Retry failed order job: Order cannot be retried', [
                    'order_id' => $this->orderId,
                    'status' => $order->status->value
                ]);
                return false;
            }

            Log::info('Retrying failed transfer order', [
                'order_id' => $this->orderId,
                'type' => $order->type->value,
                'retry_reason' => $this->retryReason,
                'attempt' => $this->attempts()
            ]);

            // 重置订单状态为已创建
            $order->updateStatus(TransferStatus::CREATED, '重试处理');

            // 根据订单类型进行重试处理
            $success = false;
            if ($order->isTransferOut()) {
                $success = OrderLogic::processTransferOut($order);
            } elseif ($order->isTransferIn()) {
                // 转入订单通常不需要重试，因为资金已经到账
                // 但可以重试回调发送
                $success = $this->retryTransferInCallback($order);
            }

            if ($success) {
                Log::info('Transfer order retry successful', [
                    'order_id' => $this->orderId,
                    'type' => $order->type->value
                ]);
            } else {
                Log::warning('Transfer order retry failed', [
                    'order_id' => $this->orderId,
                    'type' => $order->type->value,
                    'attempt' => $this->attempts()
                ]);

                // 如果是最后一次尝试，标记为最终失败
                if ($this->attempts() >= $this->tries) {
                    $order->updateStatus(TransferStatus::FAILED, '重试次数已达上限');
                }
            }

        } catch (\Exception $e) {
            Log::error('Retry failed order job error', [
                'order_id' => $this->orderId,
                'error' => $e->getMessage(),
                'trace' => $e->getTraceAsString()
            ]);

            // 重新抛出异常以触发重试机制
            throw $e;
        }

        return true;
    }

    /**
     * 获取任务数据
     *
     * @return array
     */
    public function payload()
    {
        return [
            'order_id' => $this->orderId,
            'retry_reason' => $this->retryReason
        ];
    }

    /**
     * 重试转入订单的回调发送
     * 
     * @param TransferOrder $order
     * @return bool
     */
    protected function retryTransferInCallback(TransferOrder $order): bool
    {
        try {
            // 如果应用支持回调，则发送回调
            if ($order->transferApp->supportsCallback()) {
                SendCallbackJob::dispatch($order);
                return true;
            }

            // 如果不支持回调，直接标记为完成
            $order->updateStatus(TransferStatus::COMPLETED);
            return true;

        } catch (\Exception $e) {
            Log::error('Retry transfer in callback failed', [
                'order_id' => $order->id,
                'error' => $e->getMessage()
            ]);
            return false;
        }
    }

    /**
     * 任务失败处理
     *
     * @param \Throwable $exception
     * @return void
     */
    public function failed(\Throwable $exception): void
    {
        Log::error('Retry failed order job finally failed', [
            'order_id' => $this->orderId,
            'error' => $exception->getMessage(),
            'attempts' => $this->attempts()
        ]);

        // 尝试更新订单状态为最终失败
        try {
            $order = TransferOrder::find($this->orderId);
            if ($order && $order->canRetry()) {
                $order->updateStatus(TransferStatus::FAILED, '重试任务失败: ' . $exception->getMessage());
            }
        } catch (\Exception $e) {
            Log::error('Failed to update order status after retry job failed', [
                'order_id' => $this->orderId,
                'error' => $e->getMessage()
            ]);
        }
    }

    /**
     * 计算重试延迟时间
     * 
     * @return int
     */
    public function backoff(): int
    {
        // 指数退避：第1次重试延迟60秒，第2次延迟120秒，第3次延迟240秒
        return 60 * pow(2, $this->attempts() - 1);
    }

    /**
     * 获取任务标识
     * 
     * @return string
     */
    public function getJobIdentifier(): string
    {
        return "retry_failed_order_{$this->orderId}";
    }
}