<?php
// +----------------------------------------------------------------------
// | LARAVEL8.0 框架 [ LARAVEL ][ RXThinkCMF ]
// +----------------------------------------------------------------------
// | 版权所有 2017~2021 LARAVEL研发中心
// +----------------------------------------------------------------------
// | 官方网站: http://www.laravel.cn
// +----------------------------------------------------------------------
// | Author: laravel开发员 <laravel.qq.com>
// +----------------------------------------------------------------------

namespace App\Services\Api;

use App\Models\GoodsCategoryModel;
use App\Models\GoodsCollectModel;
use App\Models\GoodsModel;
use App\Models\GoodsSkuModel;
use App\Models\MemberCouponModel;
use App\Models\MemberModel;
use App\Services\BaseService;
use App\Services\ConfigService;
use App\Services\RedisService;

/**
 * 商品管理-服务类
 * @author laravel开发员
 * @since 2020/11/11
 * @package App\Services\Api
 */
class GoodsService extends BaseService
{
// 静态对象
    protected static $instance = null;

    /**
     * 构造函数
     * @author laravel开发员
     * @since 2020/11/11
     */
    public function __construct()
    {
        $this->model = new GoodsModel();
    }

    /**
     * 静态入口
     */
    public static function make()
    {
        if (!self::$instance) {
            self::$instance = new static();
        }
        return self::$instance;
    }

    /**
     * 列表数据
     * @param $params
     * @param int $pageSize
     * @return array
     */
    public function getDataList($params, $pageSize = 15)
    {
        $cacheKey = "caches:goods:list_{$pageSize}_" . ($params ? md5(json_encode($params)) : 0);
        $datas = RedisService::get($cacheKey);
        if (empty($datas)) {
            $query = $this->getQuery($params)
                ->orderBy('a.create_time', 'desc')
                ->orderBy('a.id', 'desc');

            $field = ["a.*"];
            $list = $query->select($field)
                ->paginate($pageSize > 0 ? $pageSize : 9999999);
            $list = $list ? $list->toArray() : [];
            if ($list) {
                $datas = [
                    'pageSize' => $pageSize,
                    'total' => isset($list['total']) ? $list['total'] : 0,
                    'list' => isset($list['data']) ? $list['data'] : []
                ];

                RedisService::set($cacheKey, $datas, rand(3, 5));
            }
        }

        return $datas;
    }


    /**
     * 查询条件
     * @param $params
     * @return mixed
     */
    public function getQuery($params)
    {
        $where = ['a.status' => 1, 'a.mark' => 1];
        $status = isset($params['status']) ? $params['status'] : 1;
        if ($status > 0) {
            $where['a.status'] = $status;
        } else {
            unset($where['a.status']);
        }

        $model = $this->model->with(['category','sku'])
            ->from('goods as a')
            ->where(function ($query) use ($params) {
                // 分类
                $categoryId = isset($params['category_id'])? intval($params['category_id']) : 0;
                if($categoryId>0){
                    $query->where('a.category_id', $categoryId);
                }

                // 店铺
                $storeId = isset($params['store_id'])? intval($params['store_id']) : 0;
                if($storeId>0){
                    $query->where('a.store_id', $storeId);
                }

                $keyword = isset($params['keyword']) ? trim($params['keyword']) : '';
                if ($keyword) {
                    $query->where(function ($query) use ($keyword) {
                        $query->where('a.goods_name', 'like', "%{$keyword}%")
                            ->orWhere('a.tags','like',"%{$keyword}%");
                    });
                }

                $type = isset($params['type']) ? $params['type'] : 0;
                if($type){
                    $query->where('a.type', $type);
                }

                $isRecommend = isset($params['is_recommend']) ? $params['is_recommend'] : 0;
                if($isRecommend){
                    $query->where('a.is_recommend', $isRecommend);
                }

                $isNew = isset($params['is_new']) ? $params['is_new'] : 0;
                if($isNew){
                    $query->where('a.is_new', $isNew);
                }


            })->where($where);

        return $model;
    }

    /**
     * 分类
     * @return array|mixed
     */
    public function getCategoryList()
    {
        $cacheKey = "caches:goods:categoryList";
        $datas = RedisService::get($cacheKey);
        if($datas){
            return $datas;
        }

        $datas = GoodsCategoryModel::where(['pid'=>0,'status'=>1,'mark'=>1])
            ->select(['id','name','icon','pid','sort'])
            ->orderBy('sort','desc')
            ->orderBy('id','asc')
            ->get();
        $datas = $datas? $datas->toArray() : [];
        if($datas){
            RedisService::set($cacheKey, $datas, rand(300,600));
        }

        return $datas;
    }

    /**
     * 详情信息
     * @param $id
     * @return mixed
     */
    public function getInfo($id,$userId=0)
    {
        $cacheKey = "caches:goods:info_{$id}_{$userId}";
        $info = RedisService::get($cacheKey);
        if ($info) {
            return $info;
        }

        $info = $this->model->with(['category','skus'])->where(['id' => $id])->first();
        $info = $info ? $info->toArray() : [];
        if ($info) {
            RedisService::set($cacheKey, $info, rand(10, 20));
        }
        return $info;
    }

    /**
     * 收藏
     * @param $userId
     * @param $goodsId
     * @return array|false
     */
    public function collect($userId, $goodsId)
    {
        $info = $this->model->where(['id' => $goodsId,'status'=>1,'mark'=>1])->first();
        $info = $info ? $info->toArray() : [];
        if(empty($info)){
            $this->error = '商品已下架';
            return false;
        }


        if($id = GoodsCollectModel::where(['user_id'=>$userId,'goods_id'=>$goodsId,'mark'=>1])->value('id')){
            GoodsCollectModel::where(['id'=>$id])->update(['mark'=>0,'update_time'=>time()]);
            $this->error = '取消收藏';
            RedisService::clear("caches:goods:info_{$id}_{$userId}");
            return ['id'=>$id,'is_collect'=>0];
        }else{
            if(!$id = GoodsCollectModel::insertGetId(['user_id'=>$userId,'goods_id'=>$goodsId,'status'=>1,'mark'=>1,'create_time'=>time(),'update_time'=>time()])){
                $this->error = '收藏失败';
                return false;
            }

            $this->error = '收藏成功';
            RedisService::clear("caches:goods:info_{$id}_{$userId}");
            return ['id'=>$id,'is_collect'=>1];
        }
    }

    /**
     * @param $ids
     * @param $goods
     * @param $userId
     * @param $orderNo 订单号
     * @return array|false
     */
    public function getOrderGoods($ids, $goods, $userId, $orderNo='', $discountPoint=0, $couponId=0)
    {
        if(empty($ids) || empty($goods)){
            $this->error = '请选择商品';
            return false;
        }

        // 用户信息
        if(empty($orderNo)){
            $userInfo = MemberModel::with(['levelData'])->where(['id' => $userId, 'mark' => 1])
                ->select(['id','openid','vip_expired','member_level', 'status'])
                ->first();
            $userInfo = $userInfo?$userInfo->toArray() : [];
            $status = isset($userInfo['status']) ? $userInfo['status'] : 0;
            $openid = isset($userInfo['openid']) ? $userInfo['openid'] : 0;
            $vipExpired = isset($userInfo['vip_expired']) ? $userInfo['vip_expired'] : 0;
            $levelData = isset($userInfo['level_data']) ? $userInfo['level_data'] : [];
            if (empty($userInfo) || $status != 1) {
                $this->error = 1045;
                return false;
            }

            if (empty($openid)) {
                $this->error = 1042;
                return false;
            }

            // 有效会员
            if($vipExpired != 0){
                $discountPoint = isset($levelData['discount']) ? $levelData['discount'] : 0; // 会员折扣
            }

        }

        // 优惠券信息
        $couponInfo = [];
        if($couponId){
            $couponInfo = MemberCouponModel::where(['coupon_id'=>$couponId,'user_id'=>$userId,'mark'=>1])->first();
            $couponType = isset($couponInfo['coupon_type'])?$couponInfo['coupon_type'] : 0;
            $couponStatus = isset($couponInfo['status'])?$couponInfo['status'] : 0;
            $startTime = isset($couponInfo['start_time'])?$couponInfo['start_time'] : 0;
            $endTime = isset($couponInfo['end_time'])?$couponInfo['end_time'] : 0;
            // 下单需验证
            if($orderNo){
                if(empty($couponInfo) || $couponType<=0){
                    $this->error = '优惠券无效';
                    return false;
                }

                if($couponStatus != 1){
                    $this->error = '该优惠券已使用，请刷新后重试～';
                    return false;
                }

                if($startTime > time()){
                    $this->error = '该优惠券使用时间未到～';
                    return false;
                }

                if($endTime && $endTime < time()){
                    $this->error = '该优惠券已过期～';
                    return false;
                }
            }
        }

        $list = $this->model->whereIn('id', $ids)
            ->where(['status'=>1,'mark'=>1])
            ->select(['id as goods_id','goods_name','type','category_id','store_id','delivery_fee','sku_type','price','stock','unit','weight','thumb'])
            ->get()
            ->keyBy('goods_id');
        $list = $list? $list->toArray() : [];
        if($list){
            $isGoodsCoupon = false;
            $skus = GoodsSkuModel::whereIn('goods_id', $ids)->select(['id','sku_name','price','stock'])->get()->keyBy('id');
            $skus = $skus?$skus->toArray() :[];
            $result = ['discount_point'=>floatval($discountPoint),'store_id'=>0,'coupon_id'=>$couponId,'coupon_total'=>0,'discount_total'=>0.00,'delivery_fee'=>0.00,'goods_total'=>0,'order_total'=>0,'count'=>0,'goods'=>[]];
            foreach ($goods as $params){
                $goodsId = isset($params['id'])?$params['id']:0;
                $skuId = isset($params['sku_id'])?$params['sku_id']:0;
                $num = isset($params['num'])?$params['num']:0;
                $item = isset($list[$goodsId])?$list[$goodsId] : [];
                if(empty($item)){
                    continue;
                }

                $item['order_no'] = $orderNo;
                $id = isset($item['goods_id'])?$item['goods_id']:0;
                $goodsName = isset($item['goods_name'])?$item['goods_name']:'';
                $storeId = isset($item['store_id'])?$item['store_id']:0;
                $deliveryFee = isset($item['delivery_fee'])?$item['delivery_fee']:0;
                $stock = isset($item['stock'])?$item['stock']:0;
                $skuType = isset($item['sku_type'])?$item['sku_type']: 1;
                $skuData = isset($skus[$skuId])? $skus[$skuId]:[];
                $skuPrice = isset($skuData['price'])?$skuData['price']:0;
                $skuStock = isset($skuData['stock'])?$skuData['stock']:0;
                $skuName = isset($skuData['sku_name'])?$skuData['sku_name']:'';
                $price = $skuType==2 ? $skuPrice : $item['price'];
                unset($item['skus']);
                if($result['store_id'] && $storeId != $result['store_id']){
                    $this->error = '一次只能购买同一个商家的商品，请核对后重试～';
                    return false;
                }

                if($stock<=0 || $num>$stock){
                    $this->error = $skuId? "商品[{$goodsName}]规格[{$skuName}]库存不足～" : "商品[{$goodsName}]库存不足~";
                    return false;
                }

                if($skuType==2 && ($skuStock<=0 || $num>$skuStock)){
                    $this->error = "商品[{$goodsName}]规格[{$skuName}]库存不足～";
                    return false;
                }

                if($num>0 && $goodsId == $id && $price>0){
                    $result['store_id'] = $storeId;
                    $result['delivery_fee'] = max($deliveryFee,$result['delivery_fee']);
                    $item['user_id'] = $userId;
                    $item['sku_id'] = $skuId;
                    if(empty($orderNo)){
                        $item['sku'] = $skuData;
                    }
                    $item['price'] = $price;
                    $item['total'] = $price;
                    $item['num'] = $num;
                    $total = round($price * $num,2);

                    // 计算优惠
                    $couponData = $this->countCouponTotal($goodsId, $total, $couponInfo);
                    if(!$couponData){
                        return false;
                    }

                    // 是否商品使用的优惠券
                    $couponTotal = isset($couponData['coupon_total'])?$couponData['coupon_total'] : 0;
                    $payTotal = isset($couponData['total'])?$couponData['total'] : 0;
                    if($payTotal){
                        $item['total'] = $payTotal;
                        //$total = $payTotal;
                        $item['coupon_id'] = $couponId;
                        $item['coupon_total'] = floatval($couponTotal);
                        $result['coupon_id'] = $couponId;
                        $result['coupon_total'] = floatval($couponTotal);
                        $isGoodsCoupon = true;
                    }else{
                        $item['total'] = $total;
                    }


                    $item['thumb'] = $orderNo?get_image_path($item['thumb']):$item['thumb'];
                    $result['goods'][] = $item;
                    $result['goods_total'] += $total;
                    $result['order_total'] += $total;
                    $result['count']++;
                }
            }

            // 非商品优惠券，整个订单的优惠券
            $discountTotal = 0;
            $couponTotal =  $result['coupon_total'];
            if($couponId && !$isGoodsCoupon){
                $couponData = $this->countCouponTotal(0, $result['order_total'], $couponInfo);
                if(!$couponData){
                    return false;
                }

                $couponTotal = isset($couponData['coupon_total'])?$couponData['coupon_total'] : 0;
                $result['coupon_total'] = floatval($couponTotal);
            }

            // 会员折扣
            if($discountPoint>0 && $discountPoint<10){
                $discountTotal = floatval(moneyFormat( $result['order_total']*(1-$discountPoint/10),2));
                $result['discount_total'] = $discountTotal;
            }

            // 折后订单总金额
            $result['order_total'] = floatval(moneyFormat($result['order_total']-$couponTotal-$discountTotal,2));

            // 实付订单总金额加上运费
            $result['pay_total'] = floatval(moneyFormat($result['order_total'] + $result['delivery_fee'],2));
            return $result;
        }

        return false;
    }

    /**
     * 优惠券计算
     * @param $goodsId
     * @param $total
     * @param $couponInfo
     * @return array|bool|int
     */
    public function countCouponTotal($goodsId, $total, $couponInfo)
    {
        $couponStatus = isset($couponInfo['status'])?$couponInfo['status'] : 0;
        $couponType = isset($couponInfo['coupon_type'])?$couponInfo['coupon_type'] : 0;
        $couponGoodsIds = isset($couponInfo['goods_ids'])&& $couponInfo['goods_ids']?explode(',', $couponInfo['goods_ids']) : [];
        // 按商品或全平台（非购买券）
        if($goodsId && $couponType != 20 && ($couponGoodsIds && !in_array($goodsId, $couponGoodsIds))){
            $this->error = "优惠券非该商品使用";
            return false;
        }

        if($total <= 0 ){
            $this->error = "消费金额错误";
            return false;
        }

        if($couponInfo && $couponStatus != 1){
            $this->error = "该优惠券已被使用";
            return false;
        }

        $endTime = isset($couponInfo['end_time'])?$couponInfo['end_time']:0;
        $startTime = isset($couponInfo['start_time'])?$couponInfo['start_time']:0;
        if($startTime && time() < $startTime){
            $this->error = '优惠券使用时间未到';
            return false;
        }

        if($endTime>0 && time() > $endTime){
            $this->error = '优惠券已过期';
            return false;
        }

        // 满减券
        if($couponType == 10){
            $minPrice = isset($couponInfo['min_price'])?$couponInfo['min_price']:0;
            $reducePrice = isset($couponInfo['reduce_price'])?$couponInfo['reduce_price']:0;

            if($total<= $reducePrice){
                $this->error = '金额不足优惠券使用条件';
                return false;
            }

            // 满足最低消费
            if($reducePrice && $minPrice && $total >= $minPrice){
                return ['total'=>moneyFormat($total-$reducePrice,2),'coupon_total'=>$reducePrice];
            }
        }
        // 购买券
        else if($couponType == 20){
            $reducePrice = isset($couponInfo['reduce_price'])?$couponInfo['reduce_price']:0;
            if($total<= $reducePrice){
                $this->error = '金额不足优惠券使用条件';
                return -1;
            }

            return ['total'=>moneyFormat($total-$reducePrice,2),'coupon_total'=>$reducePrice];
        }
        // 折扣券
        else if($couponType == 30){
            $reducePrice = isset($couponInfo['reduce_price'])?$couponInfo['reduce_price']:0;
            $discount = isset($couponInfo['discount'])?$couponInfo['discount']:0;
            $payTotal = moneyFormat($total * $discount/10, 2);
            return ['total'=>$payTotal,'coupon_total'=> moneyFormat($total-$payTotal,2)];
        }

        return true;
    }

    /**
     * 专区商品
     * @param $type 专区类型：2-午夜限定，3-蜜友优选
     * @return array|mixed
     */
    public function getListByZoneType($type, $limit=0)
    {
        $limit = $limit?$limit : ConfigService::make()->getConfigByCode("zone_type{$type}_num", 6);
        $cacheKey = "caches:goods:zoneList_{$type}_{$limit}";
        $data = RedisService::get($cacheKey);
        if($data){
            return $data;
        }

        $data = $this->model->with(['sku'])->where(['zone_type'=>$type,'status'=>1,'mark'=>1])
            ->select(['id','thumb','price','market_price','sku_type','goods_name','sales','stock','category_id','type','zone_type','is_new','status'])
            ->orderBy('sort','desc')
            ->orderBy('id','asc')
            ->get();
        $data = $data? $data->toArray() :[];
        if($data){
            RedisService::set($cacheKey, $data, rand(10, 20));
        }
        return $data;
    }
}