<?php

namespace App\Api\Controllers;

use App\Api\Resources\AddressResource;
use App\Api\Resources\CartResource;
use App\Models\Cart;
use App\Models\Freight;
use App\Models\GoodsParams;
use App\User;
use Illuminate\Http\Request;
use App\Api\Resources\CartSellerResource;
use App\Models\Seller;
use RuLong\Area\Models\UserAddress;

class CartController extends Controller
{
    public function __construct()
    {
//        $this->middleware('auth.api');
//        $this->user = \Auth::guard('api')->user();
//        $this->uid = \Auth::guard('api')->id();
        $this->user = User::find(824);
        $this->uid = 824;
    }

    /**
     * 小程序，购物车页面数据接口
     *
     * @param
     * @return array
     */
    public function index()
    {
        $lists = Cart::where('user_id', $this->uid)->orderBy('id', 'desc')->get();
        $data = [];
        foreach ($lists as $cart) {
            if (!isset($carts[$cart->params->goods->seller_id])) {
                $carts[$cart->params->goods->seller_id] = [];
            }
            if ($cart->params->stock < 1) {
                $cart->delete();
            } else {
                if ($cart->number > $cart->params->stock) {
                    $cart->number = $cart->params->stock;
                    $cart->save();
                }
                array_push($carts[$cart->params->goods->seller_id], $cart);
            }
        }


        foreach ($carts as $key => $seller_item) {
            $seller_cart = [];
            $seller_cart['seller'] = new CartSellerResource(Seller::find($key));
            foreach ($seller_item as $cart_item) {
                $seller_cart['goods_list'][] = new CartResource($cart_item);
            }
            array_push($data, $seller_cart);
        }

        return [
            'data' => $data,
            'status' => 'SUCCESS',
            'status_code' => 200,
        ];
    }

    /**
     * 小程序，商品详情页，点击加入购物车请求接口
     *
     * @param  \Illuminate\Http\Request $request
     * @return array
     */
    public function save(Request $request)
    {
        $user_id = $this->uid;
        $result = Cart::where(['user_id' => $user_id, 'params_id' => $request->params_id])->first();
        $params = GoodsParams::find($request->params_id);
        if ($result) {
            $result->number += $request->number;
            $result->save();
        } else {
            $result = Cart::create([
                'user_id' => $this->uid,
                'params_id' => $request->params_id,
                'goods_id' => $params->goods_id, //保存goods_id是为了下架商品时，删除购物车
                'number' => $request->number,
            ]);
        }

        if ($result) {
            return $this->success(['msg' => '成功加入购物车', 'cartGoodsCount' => Cart::where('user_id', $this->uid)->count()]);
        } else {
            return $this->failed('加入失败');
        }

    }

    /**
     * 小程序，购物车页，点击增减商品数量请求接口
     *
     * @param  \Illuminate\Http\Request $request
     * @return array
     */
    public function setnum(Request $request)
    {
        $cart = Cart::find($request->id);
        $cart->number = $request->number;
        if ($cart->save()) {
            return $this->success(['msg' => '操作成功', 'number' => $cart->number]);
        } else {
            return $this->failed('加入失败');
        }
    }

    /**
     * 小程序，确认订单页请求的接口
     *
     * @param  \Illuminate\Http\Request $request
     * @return array
     */
    public function sure(Request $request)
    {
        $data = array();
        $carts = array();
        $cart_amount = 0;
        $cart_score = 0;
        $cart_freight = 0;
        $address = $request->addressId ? UserAddress::find($request->addressId) : null;
        foreach (explode(',', $request->cart_ids) as $key => $value) {
            $cart = Cart::find($value);
            if ($cart) {
                if ($cart->params->stock < 1) {
                    $cart->delete();
                } else {
                    if ($cart->number < $cart->params->stock) {
                        if (!isset($carts[$cart->params->goods->seller_id])) {
                            $carts[$cart->params->goods->seller_id] = [];
                        }
                        array_push($carts[$cart->params->goods->seller_id], $cart);
                    }
                }
            }
        }
        foreach ($carts as $key => $seller_item) {
            $seller_cart = [];
            $seller_cart['seller'] = new CartSellerResource(Seller::find($key));
            $seller_cart['express'] = ['type1' => 1, 'type2' => 0]; //配送方式，type1-快递，type2-自取
            $seller_cart['remark'] = '';//买家留言
            //获取店铺运费、金额、积分小计
            $seller_total = self::sellerTotal($key, $seller_item, $address);

            //格式化单店铺小计
            foreach ($seller_total as $k => $v) {
                $seller_cart['total'][$k] = number_format($v, 2);
                $seller_cart['totalOriginal'][$k] = $v;

            }

            //计算全部店铺总和
            $cart_amount += $seller_total['amount'];
            $cart_score += $seller_total['score'];
            $cart_freight += $seller_total['freightPrice'];

            foreach ($seller_item as $cart_item) {
                $seller_cart['goods_list'][] = new CartResource($cart_item);
            }
            array_push($data, $seller_cart);
        }

        return [
            'data' => [
                'cartData' => $data,
                'cartTotal' => [
                    'amount' => number_format($cart_amount, 2),
                    'score' => number_format($cart_score, 2),
                    'freight' => number_format($cart_freight, 2),
                    'freightOriginal' => $cart_freight,
                    'orderPrice' => number_format($cart_amount + $cart_freight, 2),
                    'orderPriceOriginal' => $cart_amount + $cart_freight

                ],
                'address' => $address ? new AddressResource($address) : []
            ],

            'status' => 'SUCCESS',
            'status_code' => 200,
        ];

    }

    /**
     * 计算店铺商品金额、运费金额、积分金额总和
     *
     * @param
     * @return array
     */
    private function sellerTotal($seller_id, $seller_item, $address = null)
    {
        $amount = 0;
        $freightPrice = \Params::get('default_freight');
        $heavy = 0;
        $score = 0;
        foreach ($seller_item as $cart_item) {
            $params = GoodsParams::find($cart_item->params_id);
            $amount += $cart_item->number * $params->price;
            if ($params->is_free_freight == 0) {
                $heavy += $cart_item->number * $params->heavy;
            }
            $score += $cart_item->number * $params->score;
        }

        if ($heavy === 0) {
            $freightPrice = 0; //包邮
        } else {
            //计算每个商户订单的运费
            if (!empty($address)) {
                $freight = Freight::where(['seller_id' => $seller_id, 'area_id' => $address->province->id])->first();
                if ($freight) {
                    $freightPrice = $freight->basic;
                    if ($freight->heavy < $heavy) {
                        $freightPrice += ceil($heavy - $freight->heavy) * $freight->added;
                    }
                }
            }
        }

        return [
            'freightPrice' => $freightPrice,
            'score' => $score,
            'amount' => $amount - $score,
        ];
    }

    /**
     * 小程序，购物车页面，点击删除商品请求的接口
     *
     * @param  \Illuminate\Http\Request $request
     * @return array
     */
    public function delete(Cart $cart)
    {

        if ($cart->delete()) {
            return $this->success(['msg' => '操作成功']);
        } else {
            return $this->failed('加入失败');
        }
    }

}