<?php
namespace app\common\service;

use think\Db;
use think\Exception;

class UserCartService{
	const APP_DEFAULT_IMG_URL = 'ydyd-develop-file.oss-cn-hangzhou.aliyuncs.com/pc_shop_pic_url_1588925532218.jpg';
    public function getAll($user_data){
        $order = [];
        $order['uc.update_time'] = 'desc';
        $order['uc.id'] = 'desc';
        $fields = 'uc.id,g.name,m.name as manufacturer_name,g.pc_thumb,g.spec_desc,g.unit,uc.unit_price as price,uc.user_id,uc.price_id,';
        $fields .= 'sku.batch_id,spu.goods_id,spu.retail_flag,spu.retail_num,spu.entirety_num,spu.batch_type,';
        $fields .= 'spu.term_validity,spu.supplier_user_id,spu.supplier_id,spu.supplier_sn,spu.batch_number,spu.batch_status,';
        $fields .= 'uc.goods_number as num,1 as can_select,';
        $fields .= 'spu.stock_num,g.status,g.is_online_sale,spu.batch_status,sku.is_onshelf,sku.is_delete,';//下文校验字段
        //限购字段
        $fields .= 'g.max_purchase,g.max_purchase_period,g.unit';

        $data = Db::name('user_cart')->alias('uc')->field($fields)->field($fields)
            ->join('goods_batch_area_relation sku','uc.price_id=sku.id')
            ->join('goods_batch spu','sku.batch_id=spu.batch_id')
            ->join('goods g','g.goods_id=spu.goods_id')
            ->join('manufacturer m','m.id=g.manufacturer_id')->order($order)
            ->where('user_id',$user_data['user_id'])->select();
        //校验
        $available_goods = [];
        $inavailable_goods = [];
        if ($data && is_array($data)){
            foreach ($data as $key=>$value){
                //限购
                $data[$key]['is_limit'] = 0;
                //$data[$key]['limit_info'] = '';
                //限购逻辑：优势+限购周期+限购量
                if ($value['supplier_id']!=10006 &&isset($value['max_purchase'])&&isset($value['max_purchase_period'])&&$value['max_purchase']&&$value['max_purchase_period']){
                    $data[$key]['is_limit'] = 1;
                    $data[$key]['limit_info'] = $value['max_purchase_period'].'天内限购'.$value['max_purchase'].$value['unit'];
                }

                $errmsg = '';
                if ($value['status']!=1){
                    $errmsg .= '商品状态异常!';
                }
                if ($value['batch_status']!=1){
                    $errmsg .= '药品已下架';
                }
                if ($value['is_online_sale']==1){
                    $errmsg .= '非网售药品,请联系客服！';
                }
                if ($value['is_onshelf']==0){
                    $errmsg .= '已下架！';
                }
                if ($value['is_delete']==1){
                    $errmsg .= 'sku is deleted！';
                }
                //采购权限暂不校验

                //库存
                if ($value['stock_num']<$value['num'] || $value['stock_num']<=0){
                    $errmsg .= '库存不足';
                }
                $tmp_data = $data[$key];
				if (empty($tmp_data['pc_thumb'])){
					$tmp_data['pc_thumb'] = $tmp_data['app_thumb']?:self::APP_DEFAULT_IMG_URL;
				}
				if($tmp_data['pc_thumb'] == 'www.hyey.cn'){
					$tmp_data['pc_thumb'] = self::APP_DEFAULT_IMG_URL;
				}
                $tmp_data['can_select'] = 1;
                $tmp_data['total_price'] = ceil($tmp_data['price']*$tmp_data['num']*100)/100;//金额保留两位小数
                if ($errmsg){
                    $tmp_data['can_select'] = 0;
                    $tmp_data['warn_info'] = $errmsg;
                    $inavailable_goods[] = $tmp_data;
                }else{
                    $available_goods[] = $tmp_data;
                }
            }

        }

        $res = [];
        $res['errcode'] = 200;
        $res['errmsg'] = 'SUCCESS';
        $res['data'] = ['available_goods'=>$available_goods,'inavailable_goods'=>$inavailable_goods];

        return $res;

    }

    public function addGoods($user_data,$param){

        $price_id = $param['gba_id'];
        //立即购买
        $add_type = false;
        if (isset($param['add_type']) && $param['add_type']=='buy'){
            $add_type = true;
        }
        if (isset($param['goods_number'])){
            $param['goods_number'] = (int)$param['goods_number'];
            if ($param['goods_number']<0){
                throw new Exception('数量不能为负！',-100);
            }
        }

        $fields = 'g.name,g.goods_id,g.max_purchase_period,g.max_purchase,g.unit,g.pc_thumb,g.pc_gallery,g.sketch,g.drug_form,g.spec_desc,g.pc_content,g.show_price,g.country_code,';
        $fields .= 'spu.stock_num,spu.batch_id,spu.batch_type,spu.retail_num,spu.batch_number,spu.retail_flag,spu.entirety_num,spu.term_validity,spu.supplier_sn,spu.supplier_id,';
        $fields .= 'm.name as manufacturer_name,';
        $fields .= 'sku.price as unit_price,sku.price_type,sku.new_price,sku.discount_price,sku.discount_num,sku.discount_start_time,sku.discount_end_time';
        $add_data = Db::name('goods_batch_area_relation')->alias('sku')->field($fields)
            ->join('goods_batch spu','sku.batch_id=spu.batch_id')
            ->join('goods g','spu.goods_id=g.goods_id')
            ->join('manufacturer m','m.id=g.manufacturer_id')
            ->where('sku.id',$price_id)->find();
        //价格处理
        $date_now = time();
        $sale_pack_num = $add_data['retail_flag']==0?$add_data['retail_num']:$add_data['entirety_num'];
        //活动价
        if ( $add_data['supplier_id']!=10006 && isset($add_data['discount_price']) && ((!$add_data['discount_start_time'] && !$add_data['discount_end_time']) || ($add_data['discount_start_time']<$date_now && $add_data['discount_end_time']>$date_now)) && ($add_data['discount_num']>=$sale_pack_num || $add_data['discount_num']==0)){
            if ($add_data['discount_price']*10000){
                $add_data['unit_price'] = $add_data['discount_price'];
            }

            //$add_data['stock_num'] = $add_data['discount_num'];
        }
        //新人价
        if ($user_data['is_new_user']==1){
            if ( $add_data['supplier_id']!=10006 && isset($add_data['new_price']) && ((!$add_data['discount_start_time'] && !$add_data['discount_end_time']) || ($add_data['discount_start_time']<$date_now && $add_data['discount_end_time']>$date_now)) && ($add_data['discount_num']>=$sale_pack_num || $add_data['discount_num']==0)){
                if ($add_data['new_price']*10000){
                    $add_data['unit_price'] = $add_data['new_price'];
                }

                //$add_data['stock_num'] = $add_data['discount_num'];
            }
        }
        //库存校验 自营+流通
        if ($param['goods_number'] > $add_data['stock_num']){
            throw new Exception('库存不足',-156);
        }

        if ($add_data){
            $tmp = [];
            $tmp['user_id'] = $user_data['user_id'];
            $tmp['price_type'] = $add_data['price_type'];
            $tmp['price_id'] = $price_id;
            $exist_in_cart = [];//用于下文校验购物车中是否已存在where判断
            $exist_in_cart[] = ['user_id','=',$user_data['user_id']];
            $exist_in_cart[] = ['price_type','=',$add_data['price_type']];
            $exist_in_cart[] = ['price_id','=',$price_id];

            $tmp['batch_id'] = $add_data['batch_id'];
            $tmp['unit_price'] = $add_data['unit_price'];
            $tmp['goods_number'] = $param['goods_number'];
            $date_time = date('Y-m-d H:i:s');
            $tmp['create_time'] = $date_time;
            $tmp['update_time'] = $date_time;
            $tmp['type'] = '';


            //流通
            if ($add_data['supplier_id']==10006){
                $price = Db::name('hy_data')->where('sn',$add_data['supplier_sn'])->limit(1)->value('price');
                if ($price){
                    $extend_price_rate = $user_data['extend_price_rate']??1.05;
                    $tmp['unit_price'] = ceil($price*$extend_price_rate*100)/100;
                    $tmp['batch_id'] = $add_data['supplier_sn'];//兼容pc-此处存储extend_goods_id即supplier_sn

                    $extend_data = [];
                    $extend_data['name'] = $add_data['name'];
                    $extend_data['unit'] = $add_data['unit'];
                    $extend_data['price'] = $add_data['unit_price'];
                    $extend_data['sketch'] = $add_data['sketch'];
                    $extend_data['gallery'] = $add_data['pc_gallery'];
                    $extend_data['can_show'] = 1;
                    $extend_data['batch_id_plat'] = $add_data['batch_id']??'';//冗余存储当前batch_id（已入库）
                    $extend_data['drug_form'] = $add_data['drug_form'];
                    $extend_data['spec_desc'] = $add_data['spec_desc'];
                    $extend_data['stock_num'] = $add_data['stock_num'];
                    $extend_data['pc_content'] = $add_data['pc_content'];
                    $extend_data['retail_flag'] = $add_data['retail_flag'];
                    $extend_data['batch_number'] = $add_data['retail_num'];
                    $extend_data['country_code'] = $add_data['country_code'];
                    $extend_data['retail_num'] = $add_data['retail_num'];
                    $extend_data['entirety_num'] = $add_data['entirety_num'];
                    $extend_data['term_validity'] = $add_data['term_validity'];
                    $extend_data['extend_goods_id'] = $add_data['supplier_sn'];
                    $extend_data['manufacturer_name'] = $add_data['manufacturer_name'];
                    $extend_data['show_price_int'] = (int)$add_data['show_price'];
                    $extend_data['show_price_float'] = explode('.',$add_data['show_price'])[1];

                    $extend_data_json = json_encode($extend_data,JSON_UNESCAPED_UNICODE);
                    $tmp['type'] = 'extend';
                    $tmp['extend_data'] = $extend_data_json;

                }else{
                    throw new Exception('商品已下架！',-504);
                }

            }
            $exist = Db::name('user_cart')->field('id as uc_id,goods_number,user_id,price_id')->where($exist_in_cart)->find();

            //自营商品控销权限
            if (isset($add_data['batch_type']) && $add_data['batch_type']==2 && $add_data['supplier_id']!=10006){
                $cart_num_now = $exist['goods_number']??0;
                $check_array = $this->checkPurchaseAuth($user_data['user_id'],$add_data['goods_id']);
                if ($check_array['errcode']!==200){
                    throw new Exception($check_array['errmsg'],$check_array['errcode']);
                }

            }
            //限购-自营商品
            if ($add_data['supplier_id']!=10006 && $add_data['max_purchase_period'] && $add_data['max_purchase']){
                $cart_num_now = $exist['goods_number']??0;
                $to_add_now = $param['goods_number']??0;
                $check_array = $this->checkMaxPurchase($user_data['user_id'],$add_data,$cart_num_now,$to_add_now);
                if ($check_array['errcode']!==200){
                    throw new Exception($check_array['errmsg'],$check_array['errcode']);
                }

            }

            if ($exist){
                $uc_id = $exist['uc_id'];
                //非立即购买情况下，进行累加；立即购买情况下直接更新为当前提交数量
                if (!$add_type){
                    $tmp['goods_number'] += $exist['goods_number'];
                }

                $tmp['id'] = $uc_id;
                //首次加入购物车时间不更新
                unset($tmp['create_time']);
                Db::name('user_cart')->update($tmp);

            }else{
                $uc_id = Db::name('user_cart')->insertGetId($tmp);
            }

            if ($uc_id){
                $res = [];
                $res['errcode'] = 200;
                $res['errmsg'] = 'SUCCESS';
                $res['uc_id'] = $uc_id;

                return $res;
            }else{
                throw new Exception('系统异常',-506);
            }

        }else{
            throw new Exception('商品已下架',-505);
        }


    }


    /**
     * 采购权-控销
     */
    public function checkPurchaseAuth($user_id,$goods_id){
        $where = [];
        $where[] = ['goods_id','=',$goods_id];
        $where[] = ['user_id','=',$user_id];
        $where[] = ['status','=',1];
        $res = [];
        $goods_limit_check = Db::name('goods_limit_relation')->where($where)->find();
        if ($goods_limit_check){
            switch ($goods_limit_check['status']){
                case 0:
                    $res['errcode'] = 500;
                    $res['errmsg'] = '采购权申请中,等待审核通过后购买！';
                    break;
                case 1:
                    $res['errcode'] = 200;
                    $res['errmsg'] = '采购权已通过！';
                    break;
                case 2:
                    $res['errcode'] = 700;
                    $res['errmsg'] = '采购权申请未通过!请咨询客服！';
            }
        }else{
            $res['errcode'] = -1;
            $res['errmsg'] = '当前商品为控销商品,尚未未申请采购权！';
        }

        return $res;

    }

    /**
     * 限购处理
     * @param $user_id Int 用户id
     * @param $goods_data array 限购商品数据
     * @param $cart_num_now Int 购物车商品数量
     * @return array
     */
    public function checkMaxPurchase($user_id,$goods_data,$cart_num_now=0,$to_add_now=0){
        //判断药品是否设了购买数量设置，未限制的max_purchase_period为0，不进入该处理过程
        $res_result = [];
        if ($goods_data['max_purchase_period']){
            $day_limit = $goods_data['max_purchase_period'];
            $limit_time = date("Y-m-d H:i:s",strtotime("- $day_limit days"));//截止至当前时间的该时间周期内
            $_where = [];
            $_where[] = ['oi.user_id','=',$user_id];
            $_where[] = ['oi.status','in',[0,1,6,7]];
            $_where[] = ['oi.create_time','>',$limit_time];
            $_where[] = ['og.goods_id','=',$goods_data['goods_id']];
            //上述时间周期内已购买商品数量总和
            $bought_goods_num = Db::name("order_info")->alias("oi")->join("order_goods og","oi.order_id = og.order_id")->where($_where)->sum("og.goods_number");

            //可采购数量待处理; 标准 $can_buy_num = $goods_info['max_purchase'] - $bought_goods_num;(该值(负数、0、正数 )+ 包装数量)
            if ($goods_data['max_purchase'] <= $bought_goods_num){
                $res_result['errcode'] = -1;
                $res_result['errmsg'] = "限购商品,最近限购周期内已达最大采购量";//购物车中处理成失效商品?
            }else{

                $can_put_in_cart_num = $goods_data['max_purchase'] - $bought_goods_num - $cart_num_now-$to_add_now;
                if ($can_put_in_cart_num>=0){
                    //不阻断，允许继续加入购物车
                    $res_result['errcode'] = 200;
                    $res_result['errmsg'] = 'SUCCESS';
                }else{
                    //阻断
                    $res_result['errcode'] = 500;
                    $res_result['errmsg'] = '限购商品,已达到最大可购买量';
                    //$res_result['errmsg'] = '限购商品,'.$day_limit.'天内限购'.$goods_data['max_purchase'].$goods_data['unit'].',最近'.$day_limit.'天内已购'.$bought_goods_num.$goods_data['unit'].',当前最多可继续加入购物车'.$can_put_in_cart_num.$goods_data['unit'];
                }

            }

        }else{
            $res_result['errcode'] = 200;
            $res_result['errmsg'] = 'SUCCESS';
        }

        return $res_result;
    }

}