order-food-admin/app/Http/Controllers/Api/Miniprogram/GoodsController.php

<?php

namespace App\Http\Controllers\Api\Miniprogram;

use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
use Illuminate\Http\Response;
use App\Models\{Good, GoodsCategory, GoodsAttr, GoodsCart};
use App\Http\Resources\{GoodsCategoryResource, GoodsResource, GoodsInfoResource, GoodsCartResource};
use App\Services\GoodsService;

class GoodsController extends Controller
{
    public function cateList(Request $request){
        $list = GoodsCategory::orderBy('sort', 'asc')->get();
        return GoodsCategoryResource::collection($list)->additional(['code' => Response::HTTP_OK, 'message' => '']);
    }

    /**
     * 获取菜单以及商品
     */
    public function goodsList(Request $request){
        //热销商品
        $data['hot_data'] = [
            'cate_name'=>'热销',
            'cate_goods'=> GoodsInfoResource::collection(
                            Good::with(['activityExchange', 'useGoodsAttrs'])
                                ->where('is_hot', 1)
                                ->where('is_sell', 1)
                                ->orderBy('goods_price', 'desc')
                                ->orderBy('created_at', 'desc')
                                ->get()),
        ];

        $list = GoodsCategory::with(['goods', 'goods.activityExchange', 'goods.useGoodsAttrs'])->orderBy('sort', 'asc')->get();
        $data['goods_List'] = GoodsCategoryResource::collection($list);
        // [
        //     'cate_name'=>"",
        //     "cate_goods"=>[
        //         [
        //             'goods_id'=>1,
        //             'goods_name'=>'ddd',
        //             'goods_cover'=>'',
        //             'goods_price'=>'10.00',
        //             'sell_num'=>0,
        //             'exchange_array'=>[
        //                 1,2,3,4
        //             ],
        //             'goods_attr'=>[
        //                 [
        //                     'attr_name'=>'规格名称',
        //                     'attr_values'=>[
        //                         [
        //                             'value_name'=>'属性名称',
        //                             'value_peice'=>'属性价格',
        //                         ]
        //                     ]
        //                 ]
        //             ]
        //         ]
        //     ]
        // ]

        return $this->success($data);
    }

    public function toCart(Request $request){
        //返回最新购物车
        return GoodsCartResource::collection(auth('api')->user()->getUserCart())->additional(['code' => Response::HTTP_OK, 'message' => '']);
    }

    public function toCartPrice(Request $request){
        $goodsService = new GoodsService();
        return $this->success(['cart_price'=>$goodsService->goodsCartPrice()], '请求成功');
    }

    /**修改购物车 */
    public function editCart(Request $request){
        $user = auth('api')->user();
        $user_id = $user->id;
        //检测是否绑定昵称头像
        if(!$user->avatar || !$user->nick_name){
            return $this->error('未绑定昵称头像', 501);
        }
        //检测是否绑定手机号
        if(!$user->phone){
            return $this->error('未绑定手机号', 502);
        }
        //
        $init_num = $request->input('edit_num', 0);
        $goods_info = $request->input('goods_info', '{}');//{"goods_id":1,"goods_attr":[1,2,3]}
        //按给到的goods_info，改变购物车内容
        $goods_info = json_decode($goods_info, true);
        $goods = Good::findOrFail($goods_info['goods_id']);
        // 判断是否下架
        if(!$goods->is_sell){
            return $this->error('该商品已下架');
        }

        $attr_data['goods_info'] = $goods_info;
        $info_name = [];
        $attr_price = 0;
        // 处理有属性情况
        if(isset($goods_info['goods_attr'])){

            $goods_attrs = GoodsAttr::select('id')->where('is_use', 1)->where('goods_id', $goods->id)->groupBy('attr_id')->get();

            //判断属性
            if($goods_attrs->count() != count($goods_info['goods_attr'])){
                return $this->error('请选择属性');
            }
            
            $goods_attrs = GoodsAttr::with('attr')->where('is_use', 1)->whereIn('id', $goods_info['goods_attr'])->get();

            //判断属性是否均可用
            if($goods_attrs->count() != count($goods_info['goods_attr'])){
                return $this->error('属性错误');
            }
            foreach($goods_attrs as $goods_attr){
                //判断属性是否有重复选择
                if($goods_attr->attr->attr_type == 1 && isset($info_name[$goods_attr->attr_id])){
                    return $this->error('属性错误');
                }
                if(isset($info_name[$goods_attr->attr_id])){
                    $info_name[$goods_attr->attr_id] .= '|'.$goods_attr->attr_value;
                }else{
                    $info_name[$goods_attr->attr_id] = $goods_attr->attr_name.":".$goods_attr->attr_value;
                }
                
                $attr_price += $goods_attr->value_price;
            }
            $attr_data['info_name'] = $info_name;
        }
        $attr_json = json_encode($attr_data, JSON_UNESCAPED_UNICODE);
        //改变购物车
        $code = md5($attr_json);
        $cart_has = GoodsCart::where(['user_id'=>$user_id, 'goods_encode'=>$code])->exists();
        $goods_num = abs($init_num);
        if($cart_has){
            $cart_goods = GoodsCart::where(['user_id'=>$user_id, 'goods_encode'=>$code])->first();
            if($init_num > 0){
                $cart_goods->increment('goods_num', $goods_num);
            }elseif($init_num < 0){
                $cart_goods->decrement('goods_num');
                //如果数量为0 则删除
                if($cart_goods->goods_num == 0){
                    $cart_goods->delete();
                }
            }
        }else{
            if($init_num > 0){
                GoodsCart::create([
                    'user_id'       => $user_id,
                    'goods_id'      => $goods->id,
                    'goods_name'    => $goods->goods_name,
                    'goods_encode'  => $code,
                    'goods_attrs'   => $attr_json,
                    'goods_price'   => $goods->goods_price+$attr_price,
                    'goods_num'     => $goods_num,
                    'is_too'        => $goods->is_too,
                ]);
            }else{
                return $this->error('加入购物车失败：参数错误');
            }
        }
        //返回最新购物车
        return GoodsCartResource::collection(auth('api')->user()->getUserCart())->additional(['code' => Response::HTTP_OK, 'message' => '修改购物车成功']);
    }

    /**
     * 清空购物车
     */
    public function cleanCart(){
        auth('api')->user()->cleanUserCart();
        return $this->success('清空成功');
    }

}