<?php

namespace App\Http\Controllers;

use App\Models\Lottery;
use Illuminate\Foundation\Auth\Access\AuthorizesRequests;
use Illuminate\Foundation\Bus\DispatchesJobs;
use Illuminate\Foundation\Validation\ValidatesRequests;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Log;
use Carbon\Carbon;

class LotteryController extends Controller
{
    use AuthorizesRequests, DispatchesJobs, ValidatesRequests;

    private static $list = [
        [
            'id' => 1,
            'amount' => 115,
            'weight' => 50, // 随便写正整数，越大随机到的概率越大，并且会挤占其他选项的概率
        ],
        [
            'id' => 2,
            'amount' => 90,
            'weight' => 100
        ],
        [
            'id' => 3,
            'amount' => 120,
            'weight' => 40
        ],
        [
            'id' => 4,
            'amount' => 110,
            'weight' => 60
        ],
        [
            'id' => 5,
            'amount' => 666,
            'weight' => 1 // 大奖填1，概率最小
        ],
        [
            'id' => 6,
            'amount' => 66,
            'weight' => 50, // 亏钱的，也不要给太高权重，否则都不玩了～
        ],
        [
            'id' => 7,
            'amount' => 99,
            'weight' => 100
        ],
        [
            'id' => 8,
            'amount' => 150,
            'weight' => 20,
        ],
        [
            'id' => 9,
            'amount' => 200,
            'weight' => 10
        ]
    ];

    private static $price = 100; // 抽奖价格

    /**
     * 抽奖
     */
    public function golottery(Request $request)
    {
        $user = $request->user();
        $islottery = Lottery::whereBetween('created_at', [Carbon::today()->startOfDay(), Carbon::today()->endOfDay()])->where('user_id', $user->id)->first();

        // return $this->success($user);

        if ($islottery && $user->amount < $this::$price) return $this->error('像果余额不足');

        $arr = [];
        foreach ($this::$list as $item) {
            for ($i = 0; $i < $item['weight']; $i++) {
                $arr[] = $item;
            }
        }
        $resObj = $arr[array_rand($arr)]; // 随机选一个

        try {
            DB::beginTransaction();
            $cur_price = $islottery ? $this::$price : 0;
            Lottery::query()->create([
                'user_id' => $user->id,
                'amount' => $cur_price,
                'reward_amount' => $resObj['amount']
            ]);
            $user->amount += ($resObj['amount'] - $cur_price); // 加奖励，减花费
            $user->save();
            DB::commit();
        } catch (\Exception $e) {
            DB::rollBack();
            Log::error(__METHOD__, $e->getTrace());
        }
        unset($resObj['weight']);
        return $this->success($resObj);
    }

    /**
     * 获取奖品列表
     */
    public function get(Request $request)
    {
        $user = $request->user()->toArray();
        // return $this->success($user);
        $islottery = Lottery::whereBetween('created_at', [Carbon::today()->startOfDay(), Carbon::today()->endOfDay()])->where('user_id', $user['id'])->first();
        array_walk($this::$list, function (&$item) {
            unset($item['weight']);
            $item['check'] = false;
        }); // 隐藏权重选项
        return $this->success([
            'price' => $this::$price,
            'free' => !$islottery, // 是否免费
            'list' => $this::$list
        ]);
    }
}