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118 lines
3.1 KiB
118 lines
3.1 KiB
<?php
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namespace App\Utils;
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use App\Enums\OrderStatusEnum;
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use App\Enums\OrderTypeEnum;
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use App\Enums\SettingKeyEnum;
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use App\Exceptions\OrderException;
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use App\Models\Address;
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use App\Models\Order;
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use App\Models\Product;
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use App\Models\User;
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use Illuminate\Support\Collection;
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use Illuminate\Support\Facades\DB;
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class OrderUtil
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{
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protected $orderName = '商城订单';
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protected $totalAmount = 0;
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protected $details = [];
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protected $hooks = [];
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/**
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* 每一个 detail 包含商品，和数量
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*/
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public function __construct($details)
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{
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$this->details = Collection::make($details)->map(function ($detail) {
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$number = $detail['number'] ?? 1;
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$product = $detail['product'];
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// 此处库存，是查询出来的库存
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if ($number > $product->count) {
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throw new OrderException("{$product->name} 库存数量不足");
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}
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// 这里，由于库存的减少会带来超卖的问题
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// 所以我们使用乐观锁解决这个问题
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$updated = Product::query()
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->whereKey($product->id)
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->where('count', '>=', $number)
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->update([
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'count' => DB::raw("count-{$number}"),
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'sale_count' => DB::raw("sale_count+{$number}"),
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]);
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if ($updated === 0) {
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throw new \Exception("{$product->name}商品库存不足");
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}
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$attribute = [
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'product_id' => $product->id,
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'number' => $number
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];
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$attribute['price'] = $product->price;
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$attribute['total'] = ceilTwoPrice($attribute['price'] * $attribute['number']);
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$this->totalAmount += $attribute['total'];
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$tmpName = "{$product->name}*{$number}";
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if (strlen($this->orderName) + strlen($tmpName) <= 50) {
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$this->orderName .= $tmpName;
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}
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return $attribute;
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})->all();
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}
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/**
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* @param $buyUserId
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* @param Address $address
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* @return Order
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*/
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public function make($buyUserId, Address $address)
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{
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// 增加运费
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$postAmount = \setting(new SettingKeyEnum(SettingKeyEnum::POST_AMOUNT));
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$this->totalAmount += $postAmount;
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$order = new Order();
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$order->consignee_name = $address->name;
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$order->consignee_phone = $address->phone;
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$order->consignee_address = $address->format();
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$order->user_id = $buyUserId;
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$order->type = OrderTypeEnum::COMMON;
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$order->status = OrderStatusEnum::UN_PAY;
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$order->name = $this->orderName;
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$order->post_amount = $postAmount;
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$order->origin_amount = $this->totalAmount;
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$order->amount = $this->totalAmount;
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return $order;
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}
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/**
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* @return array
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*/
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public function getDetails()
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{
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return $this->details;
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}
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public function setOrderName($orderName)
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{
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$this->orderName = $orderName;
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return $this;
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}
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}
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