kailin/app/Models/PromoProduct.php

<?php namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

/**
 * 产品促销活动商品范围模型
 * 
 */
class PromoProduct extends Model
{
    use HasFactory;

    // 与模型关联的表名
    protected $table = 'promo_product';
    // 是否主动维护时间戳
    public $timestamps = false;
    // 定义时间戳字段名
    // const CREATED_AT = 'insert_time';
    // const UPDATED_AT = 'update_time';

    /**
     * 添加数据
     * 
     */
    public function add($data)
    {
        // 时间
        $data['insert_time']				= time();
        $data['update_time']				= time();
        // 写入数据表
        $id						            = $this->query()->insertGetId($data);
        // 返回结果
        return                              $id;
    }

    /**
     * 添加数据
     * 
     */
    public function edit($id,$data)
    {
        // 更新时间
        $data['update_time']                = time();
        // 写入数据表
        $result						        = $this->query()->where(['id'=>$id])->update($data);
        // 返回结果
        return                              $result;
    }

    /**
     * 查询多个优惠券的商品范围列表
     * 
     * @param   array  $couponIds  适用产品的列表
     * 
     */
    public function getProductList($couponIds)
    {
        // 写入数据表
        $result						        = $this->query()->whereIn('coupon_id',$couponIds)->get(['coupon_id','product_id'])->toArray();
        // 返回结果
        return                              $result;
    }


    /**
     * 通过产品ids查询活动列表
     *
     */
    public function getListByIds($productIds)
    {
        $time                       = time();
        $where                      = [
            ['promo.status','=','0'],
            ['promo.start_time','<=',$time],
            ['promo.end_time','>=',$time],
            ['promo_product.status','=',0],
        ];
        $data                  = $this->query()
            ->join('promo','promo.id','=','promo_product.promo_id')
            ->where($where)
            ->whereIn('promo_product.product_id',$productIds)
            ->select('promo.*','promo_product.product_id','promo_product.id as promo_product_id')
            ->get()
            ->toArray();
        // 列表
        $list                   = [];
        // 循环处理
        foreach ($data as $value) {
            // 重组数据
            $list[$value['product_id']]= $value;
        }
        // 返回结果
        return                  $list;
    }
    /**
     * 通过产品id查询活动
     *
     */
    public function getListById($productId)
    {
        $time                       = time();
        $where                      = [
            ['promo.status','=','0'],
            ['promo.start_time','<=',$time],
            ['promo.end_time','>=',$time],
            ['promo_product.status','=',0],
            ['promo_product.product_id','=',$productId],
        ];
        $data                  = $this->query()
            ->join('promo','promo.id','=','promo_product.promo_id')
            ->where($where)
            ->select('promo.*','promo_product.product_id','promo_product.id as promo_product_id')
            ->first();
        // 返回结果
        return                  $data;
    }

    /**
     * 获取优惠券扣减金额
     *
     */
    public function getRebatePrice($productIds,$uid,$productPrice,$cityId,$tags){
        // 如果有产品
        if( !$productIds )			return ['is_used'=>0,'product_price'=>$productPrice,'rebate_product'=>[]];
        // 获取产品活动
        $promoList							= $this->getListByIds($productIds);
        $promoProductList   =   [];
        foreach ($promoList as $promoInfo) {
            $promoInfoCity      =   [];
            if ($promoInfo['city_ids']){
                $promoInfoCity      =   explode(',',$promoInfo['city_ids']);
            }
            $promoInfo['price_total']      =   $productPrice[$promoInfo['product_id']]['price_total'];
            // 判断是不是可以参与
            if (!$promoInfoCity || in_array($cityId, $promoInfoCity)) {
                if ($promoInfo['tag_scope']) {
                    // 解析数组
                    $promoInfo['tag_scope'] = explode(',', $promoInfo['tag_scope']);
                    // 标签范围限定时，默认不能参与
                    $allowJoin = 0;
                    // 判断标签是不是存在
                    if ($tags) {
                        foreach ($tags as $v) {
                            // 标签范围内，允许参加
                            if (in_array($v['name'], $promoInfo['tag_scope'])) $allowJoin = 1;
                        }
                        // 在范围
                        if ($allowJoin) {
                            $promoProductList[$promoInfo['id']][] = $promoInfo;
                        }
                    }
                } else {
                    $promoProductList[$promoInfo['id']][] = $promoInfo;
                }
            }
        }
        if( !$promoProductList )			return ['is_used'=>0,'product_price'=>$productPrice,'rebate_product'=>[]];
        $reductionTotal =   0;
        $promoRebateIds =   [];
        foreach ($promoProductList as $key => $value){
            $reduction  =   0;
            $priceSum   =   array_sum(array_column($value,'price_total'));
            if ($priceSum >= $value[0]['std_pay']) {
                switch ($value[0]['rebate_type']){
                    case 1:
                        $reduction        =  $value[0]['rebate'];
                        $reductionTotal   +=  $value[0]['rebate'];
                        break;
                    case 2:
                        $reduction   =  $priceSum - number_format($priceSum * $value[0]['rebate']/10,2);
                        $reductionTotal    +=  $priceSum - number_format($priceSum * $value[0]['rebate']/10,2);
                        break;
                    case 3:
                        $promoRebateIds[]     =  $key;
                }
            }
            if ($reduction){
                foreach ($value as $k=>$v){
                    // 优惠价格 = 价格占总价的比例 * 优惠的总价
                    $productPrice[$v['product_id']]['promo_rebate_price']          = number_format( $reduction * ($productPrice[$v['product_id']]['price_total'] / $priceSum) , 2 , '.' ,'');
                }
            }
        }
        //如果有赠品
        $list       =   [];
        if ($promoRebateIds){
            $promoRebateList    =   PromoRebate::query()
                ->join('product','promo_rebate.product_id','=','product.id')
                ->where('status','=',0)
                ->whereIn('promo_id',$promoRebateIds)
                ->select(['promo_rebate.id as promo_rebate_id','promo_rebate.rebate_num as buy_num','product.id as product_id','product.stock','product.business_id','product.spec','product.thumb','product.name','product.price','product.market_price','product.status as product_status','product.spec as sku_attr_names'])
                ->get()
                ->toArray();
            if ($promoRebateList){
                foreach ($promoRebateList as $value){
                    // 库存超出的时候
                    if($value['buy_num'] > $value['stock'] && $value['stock'] > 0) $value['buy_num'] = $value['stock'];
                    $value['price_total']   =   $value['price'] * $value['buy_num'];
                    $value['pay_total']   = 0;
                    $value['coupon_total']= 0;
                    $list[$value['business_id']][] = $value;
                }
            }
        }
        // 返回扣减结果
        return                              ['product_price'=>$productPrice,'rebate_product'=>$list,'reduction_total'=>$reductionTotal];
    }

}