<?php
/**
 * This service file is part of item.
 *
 * @author   ctexthuang
 * @contact  ctexthuang@qq.com
 */

declare(strict_types=1);

namespace App\Service\Api\Order;

use App\Amqp\Producer\CancelOrderProducer;
use App\Constants\Common\OrderCode;
use App\Constants\ConfigCode;
use App\Exception\ErrException;
use App\Extend\DateUtil;
use App\Model\Order;
use App\Model\OrderGood;
use App\Service\ServiceTrait\Common\OrderChangeStatusTrait;
use Exception;
use Hyperf\Amqp\Producer;
use Hyperf\Context\ApplicationContext;
use Hyperf\DbConnection\Db;
use Psr\Container\ContainerExceptionInterface;
use Psr\Container\NotFoundExceptionInterface;

class PlaceOrderService extends BaseOrderService
{
    use OrderChangeStatusTrait;

    public function __construct()
    {
        parent::__construct();
        $this->isAutoSelectCoupon = 2;
    }

    /**
     * @var array
     */
    private array $rollbackStockCache = [];


    /**
     * 统一下单逻辑
     * @return array
     * @throws ContainerExceptionInterface
     * @throws NotFoundExceptionInterface
     */
    public function handle(): array
    {
        //todo 加防抖

        $this->siteId = (int)$this->request->input('site_id');
        $this->couponId = (int)$this->request->input('coupon_id',0);
        $this->orderType = (int)$this->request->input('order_type');

        // 生成购物车信息 ， 检测商品和库存等
        $this->check();

        // 如果传递了优惠券的值 则进行检测
        $this->getCouponInfo();

        // 计算
        $this->compute();

        // 如果有优惠券的情况下 重载计算
        $this->reloadCompute();

        // 下单 减少库存 写入数据库
        $this->placeOrder();

        // 加入取消延迟队列
        $this->joinCancelDelayQueue(
            $this->orderId,
            OrderCode::ORDER_TYPE_GOOD,
            (int)$this->configCache->getConfigValueByKey(ConfigCode::ORDER_CANCEL_TIME_KEY) * DateUtil::MINUTE * DateUtil::MS
        );

        $this->sendStockMq($this->orderId,OrderCode::WAIT_PAY);

        $this->orderRes['order_id'] = $this->orderId;

        return $this->return->success('success',$this->orderRes);
    }

    /**
     * @return void
     * @throws ContainerExceptionInterface
     * @throws NotFoundExceptionInterface
     * @throws Exception
     */
    private function reduceStock(): void
    {
        $this->rollbackStockCache = [];
//        var_dump($this->cartFirstData);
        foreach ($this->cartFirstData as $goodId => $stock) {
            $this->rollbackStockCache[$goodId] = $stock;
            if (!($this->redis->zIncrBy($this->stockKey,-$stock,$goodId))) {
                throw new Exception('cache error');
            }
        }
    }

    /**
     * @return void
     * @throws ContainerExceptionInterface
     * @throws NotFoundExceptionInterface
     */
    private function rollbackStock(): void
    {
        if (empty($this->rollbackStockCache)) return;

        foreach ($this->rollbackStockCache as $goodId => $stock) {
            $this->redis->zIncrBy($this->stockKey,$stock,$goodId);
        }
    }

    /**
     * 下单
     * @return void
     * @throws ContainerExceptionInterface
     * @throws NotFoundExceptionInterface
     */
    private function placeOrder(): void
    {
        try {
            Db::beginTransaction();

            $this->reduceStock();

            $this->insertOrder();

            $this->insertOrderGoods();

            Db::commit();
        } catch (Exception $e){
            echo $e->getMessage();
            //回滚数据库 和 缓存
            Db::rollBack();
            $this->rollbackStock();
            //意外抛出
            throw new ErrException($e->getMessage());
        }
    }

    /**
     * 插入订单商品
     * @return void
     * @throws Exception
     */
    private function insertOrderGoods(): void
    {
        $copiesNum = 0;
        $orderGoodInsertArr = [];
        foreach ($this->orderRes['good'] as $oneCopies)
        {
            $copiesNum++;
            foreach ($oneCopies['good_info'] as $one)
            {
                $orderGoodInsertArr[] = [
                    'order_id' => $this->orderId,
                    'cycle_id' => $this->cycleId,
                    'kitchen_id' => $this->orderRes['site_info']['kitchen_id'],
                    'sku_id' => $one['id'],
                    'spu_id' => $one['spu_id'],
                    'user_id' => $this->userId,
                    'quantity' => $one['num'],
                    'unit_price' => $one['unit_price'],
                    'is_comment' => OrderCode::GOOD_COMMENT_NULL,
                    'copies' => $copiesNum,
                    'type' => $one['type'],
                    'status' => OrderCode::WAIT_PAY,
                    'create_time' => date('Y-m-d H:i:s'),
                    'update_time' => date('Y-m-d H:i:s'),
                ];
            }
        }

        if (!(new OrderGood)->insert($orderGoodInsertArr)) throw new Exception('写入订单商品失败');
    }

    /**
     * 插入订单
     * @return void
     * @throws Exception
     */
    private function insertOrder(): void
    {
        $orderInsertModel = new Order();

        $orderInsertModel->order_sno = $this->generateOrderNo(OrderCode::ORDER_TYPE_GOOD, $this->userId);
        $orderInsertModel->user_id = $this->userId;
        $orderInsertModel->cycle_id = $this->cycleId;
        $orderInsertModel->site_id = $this->siteId;
        $orderInsertModel->city_id = $this->orderRes['site_info']['city_id'];
        $orderInsertModel->kitchen_id = $this->orderRes['site_info']['kitchen_id'];
        $orderInsertModel->coupon_id = $this->couponId;
        $orderInsertModel->copies = $this->orderRes['copies'];
        $orderInsertModel->type = $this->orderType;
        $orderInsertModel->total_price = $this->orderRes['total_price'];
        $orderInsertModel->actual_price = max($this->orderRes['actual_price'], 0);
        $orderInsertModel->discount_price = $this->orderRes['favorable_sundry_price'] + $this->orderRes['favorable_good_price'];
        $orderInsertModel->append_price = $this->orderRes['sundry_price'];
        $orderInsertModel->append_copies = $this->orderRes['sundry_num'];
        $orderInsertModel->status = OrderCode::WAIT_PAY;
        $orderInsertModel->is_refund_all = OrderCode::REFUND_NULL;
        $orderInsertModel->order_json = json_encode($this->orderRes);

        if (!$orderInsertModel->save()) throw new Exception('下单失败');

        $this->orderId = $orderInsertModel->id;
    }
}