<?php

namespace App\Module\DelayQueue;

use App\Module\DelayQueue\Entity\Queue;
use App\Module\DelayQueue\Job\Job;

class Redis
{

    const E_KEY = 'delay_queue';

    /**
     * 添加队列
     *
     * @param array $callback
     * @param $runParam
     * @param int $delay
     * @return int
     */
    static public function addQueue($callback, $runParam, $delay = 3): int
    {
        if (!is_callable($callback)) {
            throw new \Exception('callback is not callable');
        }
        $key = self::E_KEY . $callback[0] . $callback[1];

        /**
         * @var \Redis $a
         */
        $a = \Illuminate\Support\Facades\Redis::client();
        if ($a->exists($key)) {
            return 0;
        }
        $a->set($key, 1, $delay);

        $q            = new Queue();
        $q->create_ts = time();
        $q->delay_ts  = $delay;
        $q->runClass  = $callback[0];
        $q->runMethod = $callback[1];
        $q->runParam  = $runParam;

        Job::dispatch($q)->delay($delay);

        return 1;
    }

}