<?php


namespace app\api\controller;
use think\Db;
/**
 * @title 购物车管理（线上商城 && 积分商城）
 * @controller Shoppingcar
 * @group base
 */
class Shoppingcar extends Base
{
    public function initialize(){
        //parent::check_login();
    }


    /**
     * @title 添加购物车
     * @desc  添加购物车
     * @author qc
     * @url /api/Shoppingcar/modifyTrolley
     * @method POST
     * @header name:Authorization require:1 desc:Token
     * @param  name:goods_id type:int  require:1 default:-- desc:商品id
     * @param  name:goods_no type:string  require:1  default:-- desc:货号
     * @param  name:num type:string  require:1  default:1  desc:变更数量
     * @return name:id type:int default:-- desc:记录id
     * @return name:user_id type:int default:-- desc:会员id
     * @return name:goods_id type:int default:-- desc:商品id
     * @return name:goods_no type:string default:-- desc:货号
     * @return name:num type:int default:-- desc:商品数量
     * @return name:is_integral type:int default:-- desc:是否是积分商品
     */
    public function modifyTrolley(){
        $goods_id   = input('post.goods_id');
        $goods_no   = input('post.goods_no');
        $num        = input('post.num',1);
        $ck_ret = $this->checkGoods($goods_id,$goods_no);
        if($ck_ret['error_code'] == 1) $this->error('商品已经下架');
        if($ck_ret['error_code'] == 2) $this->error('该规格已经下架');
        if($num    >  $ck_ret['num'] )   $this->error('库存不足');
        $car_info = Db::table('shopping_trolley')
            ->where(['user_id'=>$this->uid,'goods_id'=>$goods_id,'goods_no'=>$goods_no])
            ->find();
        Db::startTrans();
        // 更新购物车
        if(empty($car_info)) {
            Db::table('shopping_trolley')->insert(['user_id'=>$this->uid,'goods_id'=>$goods_id,'goods_no'=>$goods_no,'num'=>$num,'create_at'=>date("Y-m-d H:i:s"),'is_integral'=>$ck_ret['goods_info']['is_integral']]);
            $res1 = Db::getLastInsID();
        }else{
            if($num + $car_info['num'] == 0 ) {
                $res1 = Db::table('shopping_trolley')->where(['id'=>$car_info['id']])->delete();
            }else{
                $res1 = Db::table('shopping_trolley')->where(['id'=>$car_info['id']])->update(['num'=>$num + $car_info['num']]);
            }
        }
        // 更新库存
        $res2 = update_goods_stock($goods_id,$goods_no,$num);
        if(!$res1 || !$res2){
            Db::rollback();
            $this->error('操作失败');
        }else{
            Db::commit();
            $ret = Db::table('shopping_trolley')
                ->where(['user_id'=>$this->uid,'goods_id'=>$goods_id,'goods_no'=>$goods_no])
                ->find();
            $this->success('ok',$ret);
        }
    }


    /**
     * @title 获取购物车列表（购物车列表页）
     * @desc  获取购物车列表（购物车列表页）
     * @author qc
     * @url /api/Shoppingcar/getList
     * @method GET
     * @header name:Authorization require:1 desc:Token
     * @param  name:page type:int  : default:1 desc:页数
     * @param  name:page_num type:int  : default:20 desc:每页数
     * @param  name:source type:int  : default:0 desc:购物车类型：0商城购物车，1积分购物车
     * @return name:id type:int default:-- desc:记录id
     * @return name:user_id type:int default:-- desc:会员id
     * @return name:goods_id type:int default:-- desc:商品id
     * @return name:goods_no type:string default:-- desc:货号
     * @return name:num type:int default:-- desc:商品数量
     * @return name:is_integral type:int default:-- desc:是否是积分商品
     * @return name:error_code type:int default:-- desc:错误码(0商品正常,1商品下架，2规格下架)
     * @return name:spec_img type:sting default:-- desc:商品规格封面
     * @return name:sell_money type:sting default:-- desc:商品规格售价
     * @return name:spec_exp type:sting default:-- desc:商品规格名
     */
    public function getList()
    {
        $source = input('source',0);
        if(!in_array($source,[0,1])) $this->error('购物车类型错误');
        $list = Db::table('shopping_trolley')
            ->where('user_id',$this->uid)
            ->where('num','>',0)
            ->where('is_integral',$source)
            ->limit($this->off_set,$this->page_num)
            ->order('id desc')
            ->select();
        array_walk($list,function (&$val){
            $check_goods = $this->checkGoods($val['goods_id'],$val['goods_no']);
            $val['error_code'] =$check_goods['error_code'];
            $val['spec_img'] = '';
            $val['sell_money'] = '';
            $val['spec_exp'] = '';
            if($check_goods['error_code'] == 0)
            {
                $spec_arr = $check_goods['goods_info']['spec'];
                foreach (json_decode($spec_arr,true) as $sk=>$sv) {
                    if($val['goods_no'] == $sv['goods_no']){
                        $val['spec_img']  = $sv['spec_img'];
                        $val['sell_money']  = $sv['sell_money'];
                        $val['spec_exp']  = $sv['spec_exp'];
                    }
                }
            }

        });
        $this->success('ok',['list'=>$list]);
    }


    /**
     * @title 获取购物车列表(提交订单页面)
     * @desc  获取购物车列表(提交订单页面)
     * @author qc
     * @url /api/Shoppingcar/getCommitList
     * @method GET
     * @header name:Authorization require:1 desc:Token
     * @param  name:ids type:string  : default:1 desc:购物车记录id串（逗号分开）
     * @param  name:source type:int  : default:0 desc:购物车类型：0商城购物车，1积分购物车
     * @return name:id type:int default:-- desc:记录id
     * @return name:user_id type:int default:-- desc:会员id
     * @return name:goods_id type:int default:-- desc:商品id
     * @return name:goods_no type:string default:-- desc:货号
     * @return name:num type:int default:-- desc:商品数量
     * @return name:is_integral type:int default:-- desc:是否是积分商品
     * @return name:error_code type:int default:-- desc:错误码(0商品正常,1商品下架，2规格下架)
     * @return name:spec_img type:sting default:-- desc:商品规格封面
     * @return name:sell_money type:sting default:-- desc:商品规格售价
     * @return name:spec_exp type:sting default:-- desc:商品规格名
     */
    public function getCommitList()
    {
        $source = input('source',0);
        $ids = input('ids',0);
        if(!in_array($source,[0,1])) $this->error('购物车类型错误');
        if(!$ids) $this->error('请选择商品');
        $ids_arr = explode(',',$ids);
        $list = Db::table('shopping_trolley')
            ->where('user_id',$this->uid)
            ->where('id','in',$ids_arr)
            ->where('num','>',0)
            ->where('is_integral',$source)
            ->order('id desc')
            ->select();
        array_walk($list,function (&$val){
            $check_goods = $this->checkGoods($val['goods_id'],$val['goods_no']);
            $val['error_code'] =$check_goods['error_code'];
            $val['spec_img'] = '';
            $val['sell_money'] = '';
            $val['spec_exp'] = '';
            if($check_goods['error_code'] == 0)
            {
                $spec_arr = $check_goods['goods_info']['spec'];
                foreach (json_decode($spec_arr,true) as $sk=>$sv) {
                    if($val['goods_no'] == $sv['goods_no']){
                        $val['spec_img']  = $sv['spec_img'];
                        $val['sell_money']  = $sv['sell_money'];
                        $val['spec_exp']  = $sv['spec_exp'];
                    }
                }
            }
        });
        $this->success('ok',['list'=>$list]);
    }

    /**
     * 验证商品
     * @param $goods_id
     * @param $goods_no
     * @return array
     * @throws \think\db\exception\DataNotFoundException
     * @throws \think\db\exception\ModelNotFoundException
     * @throws \think\exception\DbException
     */
    function checkGoods($goods_id,$goods_no){
        $ret_data = ['error_code'=>0,'num'=>0,'goods_info'=>[]];
        $goods_info = Db::table('store_goods')
            ->field('id,spec,stock,is_integral,status,is_deleted')
            ->where(['id'=>$goods_id])
            ->find();
        if(empty($goods_info)){
            $ret_data['error_code'] = 1;
        }else{
            if($goods_info['status'] == 0 || $goods_info['is_deleted'] == 1 ) $ret_data['error_code'] = 1;
            $key=  array_search($goods_no,array_column(json_decode($goods_info['spec'],true),'goods_no'));
            if($key === false) $ret_data['error_code'] = 2;
            foreach (json_decode($goods_info['spec'],true) as $c){
                if($c['goods_no'] == $goods_no) {
                    $ret_data['num'] =$c['store_num'];
                    break;
                }
            }
            $ret_data['goods_info'] = $goods_info;
        }
        return $ret_data;
    }


    /**
     * @title 更改购物车商品数量
     * @desc  更改购物车商品数量
     * @author qc
     * @url /api/Shoppingcar/changeNum
     * @method POST
     * @header name:Authorization require:1 desc:Token
     * @param  name:id type:int  : default:-- desc:购物车记录id
     * @param  name:num type:int  : default:20 desc:变更数量（减少数量是负数）
     */
    public function changeNum()
    {
        $id = input('post.id');
        $num = input('post.num');
        $car_info =  Db::table('shopping_trolley')->find($id);
        $ck_ret = $this->checkGoods($car_info['goods_id'],$car_info['goods_no']);
        if($ck_ret['error_code'] == 1) $this->error('商品已经下架');
        if($ck_ret['error_code'] == 2) $this->error('该规格已经下架');
        if( $num > 0 &&  ($ck_ret['num'] < $num || $ck_ret['goods_info']['stock'] < $num ) ) $this->error('库存不足');
        Db::startTrans();
        if( $num + $car_info['num'] <= 0){
            if($num + $car_info['num'] < 0) $num = $car_info['num'] * -1;
            $up1 = Db::table('shopping_trolley')->where(['id'=>$id])->delete();
        }else{
            $up1 = Db::table('shopping_trolley')->where(['id'=>$id])->update(['num'=>$num + $car_info['num']]);
        }
        // 更新商品库存
        $up2 =  update_goods_stock($car_info['goods_id'],$car_info['goods_no'],$num);
        if(!$up1 || !$up2) {
            Db::rollback();
            $this->error('修改失败');
        }else{
            Db::commit();
            $this->success('修改成功');
        }
    }

    /**
     * @title 批量删除购物车记录
     * @desc  批量删除购物车记录
     * @author qc
     * @url /api/Shoppingcar/cancelTrolley
     * @method POST
     * @header name:Authorization require:1 desc:Token
     * @param  name:ids type:int  : default:-- desc:购物车记录id串（1,2,3)
     */
    public function cancelTrolley()
    {
        $ids = input('post.ids');
        if(!$ids) $this->error('请选择要删除的记录');
        $id_arr = explode(',',$ids);
        foreach ($id_arr as $id) {
            Db::startTrans();
            $car_info =Db::table('shopping_trolley')->where(['user_id'=>$this->uid,'id'=>$id])->find();
            $ck_ret = $this->checkGoods($car_info['goods_id'],$car_info['goods_no']);
            if(!$ck_ret['error_code'] != 2) {
                $up2 =  update_goods_stock($car_info['goods_id'],$car_info['goods_no'],$car_info['num']*-1);
            }else{
                $up2 = true;
            }
            $up1 = Db::table('shopping_trolley')->where(['id'=>$id])->delete();// 删除记录
            if(!$up1 || !$up2) {
                Db::rollback();
            }else{
                Db::commit();
            }
        }
        $this->success('ok');
    }


    /**
     * @title 验证商品是否已经加到购物车
     * @desc  验证商品是否已经加到购物车
     * @author qc
     * @url /api/Shoppingcar/checkTrolley
     * @method GET
     * @header name:Authorization require:1 desc:Token
     * @param  name:goods_id type:int  require:1 default:-- desc:商品id
     * @param  name:goods_no type:string  require:1  default:-- desc:货号
     * @return name:id type:int default:-- desc:记录id
     * @return name:user_id type:int default:-- desc:会员id
     * @return name:goods_id type:int default:-- desc:商品id
     * @return name:goods_no type:string default:-- desc:货号
     * @return name:num type:int default:-- desc:商品数量
     * @return name:is_integral type:int default:-- desc:是否是积分商品
     */
    public function checkTrolley()
    {
        $goods_id   = input('post.goods_id');
        $goods_no   = input('post.goods_no');
        if(!$goods_id || !$goods_no ) $this->error('请选择商品');
        $detail = Db::table('shopping_trolley')
            ->where(['user_id'=>$this->uid,'goods_id'=>$goods_id,'goods_no'=>$goods_no])
            ->find();
        $this->success('ok',$detail);
    }


}