<?php
namespace app\api\controller\user;

use app\models\coin\UserCoinTransfer;
use app\models\redis\SystemCarousel;
use app\models\redis\UserHash;
use app\models\system\DictCoin;
use app\Request;
use crmeb\services\JsonService;
use think\facade\Config;
use think\facade\Log;
use think\facade\Cache;
/**
 *
 * activities json 配置:

 mining:
 {
    "enabled": 1,
    "symbol": "btc",
 }

 * Class UserNotificationController
 * @package app\api\controller\user
 */
class UserNotificationController {
    /**
     * 定时请求的状态接口
     * @param Request $request
     */
    public function snapshot(Request $request) {
        $uid = 1;
        // 未读消息
        $unread = UserHash::unread_get($uid);

        // 是否开启挖矿
        $symbol = Config::get('app.mining_symbo');
        $icon = Cache::get($symbol);
        if (!$icon) {
            $icon = DictCoin::where('symbol', $symbol)->value('icon');
            Cache::set($symbol, $icon);
        }
        
        $defStatus = [
            'progress'=> 0,
            'symbol'=>$symbol,
            'icon'=>$icon,
            'total'=> 0,
            'ts' => time(),
        ];
        if ($symbol) {
            $mymining = UserHash::mining_get($uid) ?? $defStatus;
            if ($mymining['progress'] > 0) {
                $mining = $this->calcMining($uid, $mymining);
                UserHash::mining_set($uid, $mining);
            }
        }
        // 跑马灯
        $carousel = SystemCarousel::getFirst(20);

        return JsonService::successful(compact('unread', 'mining', 'carousel'));
    }

    /**
     * 根据上次挖矿状态, 和过去的时长, 计算当前的状态
     * @param $p
     * @return mixed
     */
    protected function calcMining($uid, $p) {
        if ($p['progress'] <= 0) {
            return $p;
        }
        if (!isset($p['ts'])) {
            return $p;
        }
        $now = time();
        $secs_passed = $now - $p['ts'];
        $secs_unit = Config::get('app.mining_sec_unit');
        $reward_unit = Config::get('app.mining_num_per_unit');
        $hours = Config::get('app.mining_time');
        if (count($hours) != 2 || $hours[0] > $hours[1]) {
            Log::warning('app.mining_time config error.');
            return $p;
        }
        $hour = random_int($hours[0], $hours[1]);
        $secs = $hour * 60 * 60;
        //
        if ($secs_passed >= $secs) { // 挖矿结束
            $p['progress'] = 0;

            // 本次个数
            $count = floatval(bcmul(bcdiv($secs, $secs_unit, 8), $reward_unit, 8));
            // save to database
            if (!UserCoinTransfer::addMining($uid, $p['order_id'], $p['symbol'], $count)) {
                Log::error("user<$uid> save transfer failed, amount<$count>");
            }

            $p['total'] += $count;
            return $p;
        }

        $count = floatval(bcmul(bcdiv($secs_passed, $secs_unit, 8), $reward_unit, 8));
        $p['progress'] = $count;

        return $p;
    }
}