<?php

namespace App\Admin\Services;

use App\Enums\PayWay;
use App\Events\OrderPaid;
use App\Exceptions\BizException;
use App\Models\Order;
use App\Models\OrderLog;
use App\Services\OrderService as EndpointOrderService;

class OrderService
{
    /**
     * 订单调整价格
     *
     * @return void
     */
    public function adminReduceOrder(Order $order, int $reduceAmount)
    {
        if ($order->isPending()) {
            $needReduceAmount = $order->total_amount - $reduceAmount + $order->reduced_amount;
            $res = $order->where('updated_at', $order->updated_at)->update([
                'reduced_amount' => $needReduceAmount,
                'total_amount' => $reduceAmount,
            ]);
            if ($res === 0) {
                throw new BizException('订单已发生改变');
            }

            //更新订单商品优惠金额
            //分解到订单中除赠品外的商品
            $orderProducts = $order->products;
            $needReduceOrderProducts = [];
            $totalAmount = 0;
            foreach ($orderProducts as $orderProduct) {
                if (!$orderProduct->isGift()) {
                    $needReduceOrderProducts[] = $orderProduct;
                    $totalAmount += $orderProduct->total_amount;
                }
            }

            $i = count($needReduceOrderProducts);
            foreach ($needReduceOrderProducts as $reduceOrderProduct) {
                $i --;

                if ($i > 0) {
                    $amount = (int) bcdiv(bcmul($needReduceAmount, $reduceOrderProduct->total_amount, 0), $totalAmount, 2);
                    $needReduceAmount -= $amount;
                    $totalAmount -= $reduceOrderProduct->total_amount;
                } else {
                    $amount = $needReduceAmount;
                }

                $newTotalAmount = $reduceOrderProduct->total_amount + $reduceOrderProduct->reduced_amount - $amount;

                //更新订单商品的金额
                $reduceOrderProduct->update([
                    'reduced_amount' => $amount,
                    'total_amount'=> $newTotalAmount,
                ]);
            }

            OrderLog::create([
                'order_id'=>$order->id,
                'content'=> '调整订单支付价格为：￥'.bcdiv($reduceAmount, 100, 2),
            ]);
        }
    }

    /**
     * 后台支付订单
     *
     * @param Order $order
     * @return void
     */
    public function adminPay(Order $order)
    {
        if ($order->isPending()) {
            //操作订单状态-需要调整为统一支付方法
            $orderService = new EndpointOrderService();
            $orderService->pay($order, PayWay::Offline);
            // 记录操作日志
            OrderLog::create([
                'order_id'=> $order->id,
                'content'=> '修改订单状态为【已支付】',
            ]);
            //注册支付成功事件
            OrderPaid::dispatch($order);
        }
    }

    /**
     * 添加后台备注
     *
     * @param Order $order
     * @param string $remark
     * @return void
     */
    public function adminRemark(Order $order, string $remark)
    {
        //操作订单状态-需要调整为统一支付方法
        $order->update([
            'remark' => $remark,
        ]);

        OrderLog::create([
            'order_id'=>$order->id,
            'content'=> '修改订单备注：'.$remark,
        ]);
    }

    /**
     * 修改订单收货信息
     *
     * @param Order $order
     * @param array $params
     * @return void
     */
    public function adminEditConsignee(Order $order, array $params)
    {
        $oldOrderConsignee = $order->consignee_name.','.$order->consignee_telephone.','.$order->consignee_zone.$order->consignee_address;
        $order->update($params);
        OrderLog::create([
            'order_id'=>$order->id,
            'content'=> '修改订单收货信息<br\>原收货信息：'.$oldOrderConsignee,
        ]);
    }
}