jiqu-library-server/app/Services/Dealer/OrderService.php

<?php

namespace App\Services\Dealer;

use App\Enums\DealerLvl;
use App\Exceptions\BizException;
use App\Models\DealerOrder;
use App\Models\DealerProduct;
use App\Models\ShippingAddress;
use App\Models\User;
use App\Models\UserInfo;
use Illuminate\Database\QueryException;

class OrderService
{
    /**
     * 计算订单价格
     *
     * @param DealerProduct $product
     * @param integer $number
     * @return string
     */
    public function totalAmount(User $user, DealerProduct $product, int $number = 0)
    {
        //获取等级规则，判断当前用户等级是否配置等级价格
        $salePrice = $product->price;
        if ($user->dealer) {
            foreach ($product->lvlRules as $rule) {
                if ($rule->lvl == $user->dealer->lvl) {
                    $salePrice = $rule->sale_price;
                    break;
                }
            }
        }

        //获取销售规则，判断当前用户购买数量价格
        foreach ($product->saleRules as $rule) {
            if ($number >= $rule->qty) {
                if ($salePrice > $rule->price) {
                    $salePrice = $rule->price;
                }
                break;
            }
        }
        // dd($salePrice, $number);

        return bcmul($salePrice, $number, 2);
    }

    public function createOrder(User $user, DealerProduct $product, int $number = 0, int $shippingAddressId)
    {
        //判断是否满足当前等级最低补货价
        $totalAmount = $this->totalAmount($user, $product, $number);
        foreach ($product->lvlRules as $rule) {
            if ($user->dealer && $rule->lvl == $user->dealer->lvl && $totalAmount < $rule->min_order_amount) {
                throw new BizException('当前单次补货价格不能低于'.$rule->min_order_amount.'元');
            }
        }

        //找到发货人
        $consignor = $this->getConsignor($user, $totalAmount);

        //找到收货地址
        $shippingAddress = $this->getShippingAddress($user, $shippingAddressId);

        //保存订单
        $order = new DealerOrder();
        do {
            try {
                $order->sn = serial_number();
                $order->user_id = $user->id;
                $order->consignor_id = $consignor?->user_id;
                $order->total_amount = $totalAmount;
                $order->consignee_name = $shippingAddress->consignee;
                $order->consignee_telephone = $shippingAddress->telephone;
                $order->consignee_zone = $shippingAddress->zone;
                $order->consignee_address = $shippingAddress->address;
                $order->save();
                break;
            } catch (QueryException $e) {
                if (strpos($e->getMessage(), 'Duplicate entry') === false) {
                    throw $e;
                }
            }
        } while (true);

        //保存订单商品-----一个订单对应一个商品
        $order->products()->create([
            'order_id' => $order->id,
            'product_id'=> $product->id,
            'name'=> $product->name,
            'subtitle'=> $product->subtitle,
            'cover'=> $product->cover,
            'price' => $product->price,
            'sale_price'=> bcdiv($totalAmount, $number, 2),
            'qty'=> $number,
        ]);

        return $order;
    }

    /**
     * 更新订单发货人
     *
     * @return void
     */
    protected function updateOrderConsignor(DealerOrder $order)
    {
        $consignor = $this->getConsignor($order->user, $order->consignor);
        $order->update([
            'consignor_id' => $consignor?->user_id,
        ]);
    }

    /**
     * 获取收货地址
     *
     * @param \App\Models\User $user
     * @param int|null $shippingAddressId
     * @return \App\Models\ShippingAddress|null
     *
     * @throws \Illuminate\Database\Eloquent\ModelNotFoundException
     */
    protected function getShippingAddress(User $user, ?int $shippingAddressId = null): ?ShippingAddress
    {
        if ($shippingAddressId) {
            return $user->shippingAddresses()->findOrFail($shippingAddressId);
        }

        return $user->shippingAddresses()->where('is_default', true)->first();
    }

    public function getConsignor(User $user, $totalAmount, ?User $lastConsignor = null)
    {
        //todo-改成配置
        $rules = [
            [
                'amount'=>'26400.00',
                'lvl'=>DealerLvl::Contracted,
            ],
            [
                'amount' =>'8600.00',
                'lvl'=>DealerLvl::Special,
            ],
            [
                'amount' =>'2520.00',
                'lvl'=>DealerLvl::Gold,
            ],
        ];
        $lvl = $user->dealer->lvl;
        foreach ($rules as $rule) {
            if ($totalAmount >= $rule['amount'] &&  $lvl->value < $rule['lvl']->value) {
                $lvl = $rule['lvl'];
            }
        }
        //如果是签约单，直接抛到公司后台发货
        if ($lvl->value >= DealerLvl::Contracted->value) {
            return null;
        }
        $query = UserInfo::with('dealer');
        if ($lastConsignor) {
            $query->whereIn('user_id', $lastConsignor->userInfo->real_parent_ids);//上个发货人的上级
        } else {
            $query->whereIn('user_id', $user->userInfo->real_parent_ids);//自己的上级
        }
        $consignor = $query->whereHas('dealer', function ($q) use ($lvl) {
            return $q->where('lvl', '>', $lvl);//经销商身份大于自己的
        })->orderBy('depth', 'desc')->first();//深度逆序第一个
        if (!$consignor) {
            $consignor = $lastConsignor;
        }
        return $consignor;
    }
}