<?php
namespace app\api\controller;
use app\common\model\StoreGoods;
use app\common\model\StoreGoodsItem;
use app\common\service\ExpressService;
use think\Db;
use app\common\model\ShoppingTrolley;
use app\common\model\DeliveryAddress;
use think\Exception;

/**
 * @title 购物车
 * @controller Trolley
 * @group base
 */
class Trolley extends Base
{

    protected $no_login = ['delComment'];// 不需要登录的

    public function initialize()
    {
        parent::initialize();
        $path = explode('/',$this->request->path());
        if(!in_array(end($path),$this->no_login)) parent::checkLogin();
    }

    /**
     * @title 获取购物车商品数量
     * @desc  获取购物车商品数量
     * @author  qc
     * @url /api/Trolley/getTrolleyNum
     * @method GET
     * @header name:Authorization require:1 desc:Token
     * @param name:goods_id type:int default:-- desc:商品id（商品id不传查全部的）
     * @return name:total_num type:int default:-- desc:购物车商品数量
     */
    public function getTrolleyNum()
    {
        $where = [];
        $where['user_id'] = $this->user_id;
        if($goods_id = input('get.goods_id',0)) $where['goods_id'] = $goods_id;
        $total_num = ShoppingTrolley::where($where)->sum('num');
        $this->success('ok',['total_num'=>$total_num]);
    }

    /**
     * @title 获取购物车列表
     * @desc  获取购物车列表
     * @author  qc
     * @url /api/Trolley/getTrolleyList
     * @method GET
     * @header name:Authorization require:1 desc:Token
     * @return name:id type:int default:-- desc:购物车记录id
     * @return name:goods_id type:int default:-- desc:商品id
     * @return name:goods_name type:string default:-- desc:商品名称
     * @return name:goods_status type:int default:-- desc:商品状态（1上架，0下架）
     * @return name:cover type:string default:-- desc:商品封面
     * @return name:deleted_status type:string default:-- desc:商品删除状态（1删除，0未删除）
     * @return name:num type:int default:-- desc:数量
     * @return name:goods_id type:int default:-- desc:商品id
     * @return name:goods_id type:int default:-- desc:商品id
     * @return name:spec_id type:int default:-- desc:规格id
     * @return name:goods_spec type:int default:-- desc:规格
     * @return name:goods_no type:int default:-- desc:货号
     * @return name:original_price type:float default:-- desc:规格原价(下划线价格)
     * @return name:sell_price type:float default:-- desc:规格售价
     */
    public function getTrolleyList()
    {
        $join_field = 't.id,t.num,t.spec_id,t.goods_id,i.goods_spec,g.cover,i.goods_no,i.is_deleted,i.original_price,i.sell_price,i.weight,g.name goods_name,g.status goods_status,g.is_deleted deleted_status';
        $list = ShoppingTrolley::field($join_field)
            ->alias('t')
            ->where(['t.user_id'=>$this->user_id])
            ->leftJoin('StoreGoodsItem i','i.id = t.spec_id')
            ->leftJoin('StoreGoods g','t.goods_id = g.id')
            ->order('t.id desc')
            ->select()->toArray();
        $this->success('ok',['list'=>$list]);
    }

    /**
     * @title 商品添加购物车（按规格加入）
     * @desc  商品某个规格加入多少
     * @author  qc
     * @url /api/Trolley/addTrolley
     * @method POST
     * @header name:Authorization require:1 desc:Token
     * @param  name:goods_id type:int require:1  default:0 desc:商品id
     * @param  name:spec_id type:int  require:1 default:0 desc:规格id
     * @param  name:num type:int default:1 desc:数量
     */
    public function addTrolley()
    {
        $goods_id = input('post.goods_id');
        $spec_id = input('post.spec_id');
        $num    = input('post.num',1);
        if(!$goods_id || !$spec_id)  $this->error('请选择商品');
        if($num <=0 ) $this->error('添加数量有误');
        Db::startTrans();
        try {
            // 商品详情
            $goods_info = StoreGoods::with(['itemList'=>function($query)use($spec_id){
                return $query->where('id',$spec_id)->where('is_deleted',0);
            }])->where('id',$goods_id)->where('is_deleted',0)->where('status',1)->find();
            if(!$goods_info) throw new Exception('商品已下架');
            $goods_info = $goods_info->toArray();
            if(empty($goods_info['item_list'])) throw new Exception('该规格已下架');
            if($goods_info['item_list'][0]['stock'] < $num) throw new Exception('库存不足');
            $trolley_id = ShoppingTrolley::checkTrolley($this->user_id,$goods_id,$spec_id);
            // 添加到购物车
            if($trolley_id) {
                ShoppingTrolley::where('id',$trolley_id)->setInc('num',$num);
            }else{
                $trolley_info = [
                    'user_id' => $this->user_id,
                    'goods_id' => $goods_id,
                    'spec_id' => $spec_id,
                    'goods_no' => $goods_info['item_list'][0]['goods_no'],
                    'num' => $num,
                ];
                ShoppingTrolley::create($trolley_info);
            }
            // 扣减库存
            StoreGoods::where('id',$goods_id)->setDec('stock',$num);
            StoreGoodsItem::where('id',$spec_id)->setDec('stock',$num);
            Db::commit();
        }catch (\Exception $e){
            $this->is_commit = false;
            $this->ret_msg = $e->getMessage();
            Db::rollback();
        }
        $this->is_commit ? $this->success('添加成功'):$this->error($this->ret_msg);
    }

    /**
     * @title 修改购物车商品数量
     * @desc  修改购物车商品数量
     * @author  qc
     * @url /api/Trolley/changeTrolleyNum
     * @method POST
     * @header name:Authorization require:1 desc:Token
     * @param  name:trolley_id type:int require:1  default:0 desc:购物车记录id
     * @param name:num type:int require:1 default:1 desc:变更数量
     * @param name:type type:int require:1 default:1 desc:变更类型（1增加2扣减）
     */
    public function changeTrolleyNum()
    {
        $trolley_id = input('post.trolley_id');
        $num = input('post.num',1);
        $type = input('post.type',1);
        if(!in_array($type,[1,2])) $this->error('变更可类型错误');
        Db::startTrans();
        try {
            $trolley_info = ShoppingTrolley::get($trolley_id);
            if(!$trolley_info) $this->exception('记录不存在！');
            $goods_info = StoreGoods::getGoodsSpec($trolley_info->goods_id,$trolley_info->spec_id);
            if($type == 1){
                if(!$goods_info) $this->exception('商品已下架');
                if(empty($goods_info['item_list'])) $this->exception('该规格已下架');
                if($goods_info['item_list'][0]['stock'] < $num)$this->exception('库存不足');
                ShoppingTrolley::where('id',$trolley_id)->setInc('num',$num);
                StoreGoods::where('id',$trolley_info->goods_id)->setDec('stock',$num);// 扣减商品库存
                StoreGoodsItem::where('id',$trolley_info->spec_id)->setDec('stock',$num);// 扣减规格库存
            }else{
                if($trolley_info->num < $num) $this->exception('扣减数量有误');
                if($trolley_info->num > $num){
                    ShoppingTrolley::where('id',$trolley_id)->setDec('num',$num);//扣减数量
                }else{
                    ShoppingTrolley::where('id',$trolley_id)->delete();//删除记录
                }
                StoreGoods::where('id',$trolley_info->goods_id)->setInc('stock',$num);//增加商品库存
                StoreGoodsItem::where('id',$trolley_info->spec_id)->setInc('stock',$num);//增加规格库存
            }
            Db::commit();
        }catch (\Exception $e){
            $this->ret_msg = $e->getMessage();
            $this->is_commit = false;
            Db::rollback();
        }
        $this->is_commit ? $this->success('操作成功') : $this->error($this->ret_msg);
    }

    /**
     * @title 删除购物车记录
     * @desc  删除购物车记录
     * @author  qc
     * @url /api/Trolley/cancelTrolleyList
     * @method POST
     * @header name:Authorization require:1 desc:Token
     * @param  name:ids type:string require:1  default:0 desc:购物车记录id(多条用逗号隔开)
     */
    public function cancelTrolleyList()
    {
        $ids = input('post.ids');
        if(!$ids) $this->error('请选择要删除的数据');
        $trolley_list = ShoppingTrolley::where('id','in',$ids)->select();
        Db::startTrans();
        foreach ($trolley_list as $trolley_info) {
            StoreGoods::where('id',$trolley_info->goods_id)->setInc('stock',$trolley_info->num);//增加商品库存
            StoreGoodsItem::where('id',$trolley_info->spec_id)->setInc('stock',$trolley_info->num);//增加规格库存
        }
        ShoppingTrolley::where('id','in',$ids)->delete();
        Db::commit();
        $this->success('删除成功');

    }

    /**
     * @title 某商品是否添加到购物
     * @desc  获取某商品添加到购物车规格及数量
     * @author  qc
     * @url /api/Trolley/getTrolleyByGoodsId
     * @method GET
     * @header name:Authorization require:1 desc:Token
     * @param  name:goods_id type:int  default:1 desc:商品id
     * @return name:spec_id type:int default:-- desc:规格id
     * @return name:num type:int default:-- desc:数量
     */
    public function getTrolleyByGoodsId()
    {
        $goods_id = input('get.goods_id');
        $list = ShoppingTrolley::field('id,goods_id,spec_id,goods_no,num')
            ->where(['user_id'=>$this->user_id,'goods_id'=>$goods_id])
            ->order('id desc')
            ->select();
        $this->success('ok',['list'=>$list?$list->toArray() : null ]);
    }


    /**
     * @title 购物车订单确认
     * @desc  购物车订单确认
     * @author  qc
     * @url /api/Trolley/confirmTrolleyList
     * @method GET
     * @header name:Authorization require:1 desc:Token
     * @param  name:ids type:int  default:1 desc:购物车记录id（多条用逗号隔开）
     * @return name:goods_id type:int default:-- desc:商品id
     * @return name:goods_name type:string default:-- desc:商品名称
     * @return name:goods_status type:int default:-- desc:商品状态（1上架，0下架）
     * @return name:deleted_status type:string default:-- desc:删除状态（1删除，0未删除）
     * @return name:cover type:string default:-- desc:封面
     * @return name:item_list type:array default:-- desc:添加该商品的规格列表
     * @return name:item_list.spec_id type:int default:-- desc:规格id
     * @return name:item_list.goods_no type:int default:-- desc:货号
     * @return name:item_list.original_price type:float default:-- desc:规格原价
     * @return name:item_list.sell_price type:float default:-- desc:规格售价
     * @return name:item_list.goods_spec type:string default:-- desc:规格
     * @return name:total_money type:float default:-- desc:商品总金额【不含运费】
     * @return name:freight type:float default:-- desc:运费
     * @return name:freight_code type:int default:1 desc:运费提示编号【1所选地址支持发货，0所选地址不支持发货】
     * @return name:freight_msg type:string default:-- desc:运费提示信息【freight_code=1忽略】
     */
    public function confirmTrolleyList()
    {
        $ids = input('get.ids');
        $trolley_goods = ShoppingTrolley::field('goods_id')
            ->where('user_id',$this->user_id)
            ->where('id','in',$ids)
            ->group('goods_id')
            ->select();
        if(!$trolley_goods) $this->error('请选择商品');
        $goods_ids = array_column($trolley_goods->toArray(),'goods_id');
        $freight = 0;
        $list = [];
        $total_money = 0;
        $goods_list = StoreGoods::where('id','in',$goods_ids)->select()->toArray();
        $address_info = DeliveryAddress::where(['user_id'=>$this->user_id,'is_mr'=>1])->find();
        foreach ($goods_list as $goods_info){
            $trolley_data =  ['goods_id'=>$goods_info['id'],'goods_name'=>$goods_info['name'],'goods_status'=>$goods_info['status'],'cover'=>$goods_info['cover'],'deleted_status'=>$goods_info['is_deleted']];
            $trolley_data['item_list'] = ShoppingTrolley::field('t.*,i.original_price,i.sell_price,i.goods_spec')
                ->alias('t')
                ->where('t.id','in',$ids)
                ->where('t.goods_id',$goods_info['id'])
                ->leftJoin('StoreGoodsItem i','i.id = t.spec_id')
                ->select()->toArray();
            foreach ($trolley_data['item_list'] as $iv){
                $total_money = bcadd(bcmul($iv['num'],$iv['sell_price'],2),$total_money,2);
            }
            $list[] = $trolley_data;
            $fre_num = array_sum(array_column($trolley_data['item_list'],'num'));
            if($address_info) {
                $goods_freight = ExpressService::getGoodsExpressPrice($goods_info,$address_info->id,$fre_num);
                if($goods_freight['code'] !=200){
                    $this->is_commit =  false;
                    $this->ret_msg =  $goods_freight['msg'];
                }
                $freight +=  $goods_freight['freight']; //  商品运费
            }
        }
        $this->success('ok',[
            'list'=>$list,
            'total_money'=>$total_money,
            'address_info'=>$address_info ? $address_info->toArray():null,
            'freight' =>$freight,
            'freight_msg' => $this->ret_msg,
            'freight_code' => $this->is_commit ? 1 :0
        ]);
    }


}