<?php

namespace App\Http\Controllers;

use App\Http\Requests\ExchangeGoodsRequest;
use App\Http\Response\ResponseJson;
use App\Models\CoinExchange;
use App\Models\ExchangeGoods;
use App\Models\User;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Redis;

class ExchangeController extends Controller
{
    use ResponseJson;

    /**
     * 兑换商品列表
     * @param Request $request
     * @return \Illuminate\Contracts\View\Factory|\Illuminate\Foundation\Application|\Illuminate\Http\JsonResponse|\Illuminate\View\View
     */
    public function goodsList(Request $request)
    {
        $goods = ExchangeGoods::show();
        $order = $request->input('order');
        if ($order) {
            $goods = $goods->order();
        }else {
            $goods = $goods->orderBy('id', 'desc');
        }
        $goods = $goods->paginate(16);

        return $this->success('ok', $goods);
    }

    /**
     * 兑换商品详情
     * @param Request $request
     * @param ExchangeGoods $goods
     * @return \Illuminate\Contracts\View\Factory|\Illuminate\Foundation\Application|\Illuminate\Http\JsonResponse|\Illuminate\View\View
     */
    public function goods(Request $request, ExchangeGoods $goods)
    {
        return $this->success('ok', $goods);
    }

    /**
     * 兑换商品
     * @param ExchangeGoodsRequest $request
     * @param ExchangeGoods $goods
     * @return \Illuminate\Contracts\View\Factory|\Illuminate\Foundation\Application|\Illuminate\Http\JsonResponse|\Illuminate\View\View
     */
    public function exchangeGoods(ExchangeGoodsRequest $request, ExchangeGoods $goods)
    {
        $data = $request->validated();
        $user = auth()->user();
        //限制真人认证
        if ($user->is_real_approved != 1) return $this->failure("请先完成真人认证");
        $num = $request->input('num', 1);
        //减库存
//        $re = Redis::command('decrby', [ExchangeGoods::STOCKKEY . $goods->id, $num]);
        //减多了回滚
//        if ($re < 0) {
//            Redis::command('incrby', [ExchangeGoods::STOCKKEY  . $goods->id, $num]);
//            return $this->failure("库存不足");
//        }
        try {
            $need_coin = $num * $goods->coin_num;
            //检查福币数量
            $coin_info = $user->totalCoin();
            if ($coin_info < $need_coin) return $this->failure("福币数量不足，请选择其他商品");
            $data = array_merge($data, ['user_id'=>$user->id, 'price'=>$goods->price, 'coin_num'=>$goods->coin_num, 'status'=>'EXCHANGING']);
            DB::beginTransaction();
            $goods->exchangeLogs()->create($data);
            $goods->decrement('stock', $num);
            //扣除福币
            $user->updateCoinInfo('sub', $need_coin);
            DB::commit();
            return $this->success('ok');
        }catch (\Exception $e) {
            DB::rollBack();
            $this->getError($e);
//            Redis::command('incrby', [ExchangeGoods::STOCKKEY  . $goods->id, $num]);
            return $this->failure();
        }
    }

    /**
     * 兑换记录
     * @param Request $request
     * @return \Illuminate\Contracts\View\Factory|\Illuminate\Foundation\Application|\Illuminate\Http\JsonResponse|\Illuminate\View\View
     */
    public function exchangeLogs(Request $request)
    {
        $user = auth()->user();
        $logs = $user->exchangeLogs()->with('goods:id,title,price,pic,stock,coin_num');
        $status = $request->input('status');
        if ($status) {
            $logs = $logs->status();
        }
        $logs = $logs->orderByDesc('id')->paginate();
        return $this->success('ok', $logs);
    }

    /**
     * 最近兑换记录
     * @param Request $request
     * @return \Illuminate\Contracts\View\Factory|\Illuminate\Foundation\Application|\Illuminate\Http\JsonResponse|\Illuminate\View\View
     */
    public function lastExchangeLogs(Request $request)
    {
        $logs = CoinExchange::with('goods:id,title','user:id,nickname');
        $logs = $logs->orderByDesc('id')->limit(15)->get();
        return $this->success('ok', $logs);
    }

    /**
     * 兑换详情
     * @param Request $request
     * @return \Illuminate\Contracts\View\Factory|\Illuminate\Foundation\Application|\Illuminate\Http\JsonResponse|\Illuminate\View\View
     */
    public function exchangeLog(Request $request, CoinExchange $log)
    {
        $log->goods = $log->goods()->selectRaw('id,title,price,pic,stock,coin_num')->first();
        return $this->success('ok', $log);
    }

    /**
     * 签收
     * @param Request $request
     * @param CoinExchange $log
     * @return \Illuminate\Contracts\View\Factory|\Illuminate\Foundation\Application|\Illuminate\Http\JsonResponse|\Illuminate\View\View
     */
    public function signLog(Request $request, CoinExchange $log)
    {
        $log->status = 'SIGNED';
        $log->save();
        return $this->success('ok');
    }

    /**
     * 福币信息
     * @param Request $request
     * @return \Illuminate\Contracts\View\Factory|\Illuminate\Foundation\Application|\Illuminate\Http\JsonResponse|\Illuminate\View\View
     */
    public function coinInfo(Request $request)
    {
        $user = auth()->user();
        $coin = $user->coinInfo();
        $coin->total_remain_amount = $coin->remain_amount + $coin->amount_from_other;
        return $this->success('ok', $coin);
    }


}