<?php
// +------------------------------------------------+
// |http://www.cjango.com                           |
// +------------------------------------------------+
// | 修复BUG不是一朝一夕的事情，等我喝醉了再说吧！  |
// +------------------------------------------------+
// | Author: 小陈叔叔 <Jason.Chen>                  |
// +------------------------------------------------+

namespace App\Http\Controllers;

use App\Events\Lottery as LotteryEvent;
use App\Models\Lottery;
use App\Models\LotteryGift;
use App\Models\LotteryLog;
use Auth;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\View;

/**
 * 抽奖
 */
class LotteryController extends Controller
{
    public function __construct(Request $request)
    {
        parent::__construct($request);
        View::share('nav', 2);
    }

    public function index()
    {
        $lottery = Lottery::find(1);
        return view('lottery.index', compact('lottery'));
    }

    //抽奖
    public function draw()
    {
        $lottery = Lottery::find(1);

        if (!$lottery) {
            return $this->error('没有这个活动');
        } elseif ($lottery->status != 1 || $lottery->start_at->timestamp > time()) {
            return $this->error('活动没有开启');
        } elseif ($lottery->end_at->timestamp <= time()) {
            return $this->error('活动已经结束');
        }

        $list = LotteryGift::with(['item'])
            ->where('lottery_id', 1)
            ->orderBy('chance', 'asc')
            ->get();
        // $newlist = collect([]);
        // foreach ($list as $key => $gift) {
        //     $newlist->put($gift->site, $gift);
        // }

        $user = Auth::user();

        if ($user->lottery_num == 0) {
            return $this->error('您没有抽奖机会');
        }

        $gift = self::get_rand($list);
        $user->decrement('lottery_num');
        if ($user->id == 1) {
            $gift = LotteryGift::find(15);
        }
        if (empty($gift) || $gift->number == 0 || $gift->type == 0) {
            return $this->error(['site' => 6, 'win' => '很遗憾', 'title' => '您没有中奖！', 'lottery_num' => $user->lottery_num]);
        } else {
            $gift->decrement('number');

            $log = $lottery->logs()->create([
                'user_id' => $user->id,
                'gift_id' => $gift->id,
            ]);

            event(new LotteryEvent($log));
            return $this->success(['site' => $gift->site, 'win' => '恭喜您', 'title' => '抽中了 ' . $gift->item->getTitle(), 'lottery_num' => $user->lottery_num, 'allnum' => $gift->allnum, 'randNum' => $gift->randNum]);
        }
    }

    public function get_rand($gifts)
    {
        $result = '';

        $allnum = $gifts->sum('chance');
        //概率数组循环
        foreach ($gifts as $gift) {
            $randNum = mt_rand(1, $allnum);
            if ($randNum <= $gift->chance) {
                $gift->randNum = $randNum;
                $gift->allnum  = $allnum;
                $result        = $gift;
                break;
            } else {
                $allnum -= $gift->chance;
            }
        }
        unset($gifts);
        return $result;
    }

    public function logs(Request $request)
    {
        $type      = $request->type ?? 'goods';
        $class     = LotteryGift::$class;
        $item_type = $class[$type];

        $lists = LotteryLog::with(['gift.item'])->whereHas('gift', function ($query) use ($item_type) {
            $query->where('type', 1)->where('item_type', $item_type);
        })->where('user_id', Auth::id())->get();

        view()->share('title', '抽奖礼品');

        return view('lottery.logs', compact('lists', 'type'));
    }

    public function message()
    {
        return view('lottery.message');
    }
}