<?php
/**
 * ThinkShop商城系统 - 团队十年电商经验汇集巨献!
 * =========================================================
 * Copy right 2019-2029 成都云之牛科技有限公司, 保留所有权利。
 * ----------------------------------------------
 * 官方网址: https://www.cdcloudshop.com
 * =========================================================
 */

namespace app\model\system;

use app\model\BaseModel;
use think\facade\Cache;
use think\facade\Log;
use think\facade\Queue;

/**
 * 计划任务管理
 * @author Administrator
 *
 */
class Cron extends BaseModel
{

    public $time_diff = 60;//默认半个小时检测一次

    /**
     * 添加计划任务
     * @param int $type 任务类型  1.固定任务 2.循环任务
     * @param int $period 执行周期
     * @param string $name 任务名称
     * @param string $event 执行事件
     * @param int $execute_time 待执行时间
     * @param int $relate_id 关联id
     * @param int $period_type 周期类型
     */
    public function addCron($type, $period, $name, $event, $execute_time, $relate_id, $period_type = 0)
    {
        $data = [
            'type' => $type,
            'period' => $period,
            'period_type' => $period_type,
            'name' => $name,
            'event' => $event,
            'execute_time' => $execute_time,
            'relate_id' => $relate_id,
            'create_time' => time()
        ];
        $res = model('cron')->add($data);
        return $this->success($res);
    }

    /**
     * 删除计划任务
     * @param $condition
     * @return array
     */
    public function deleteCron($condition)
    {
        $res = model('cron')->delete($condition);
        return $this->success($res);
    }

    /**
     * 执行任务
     */
    public function execute()
    {
        $system_config_model = new SystemConfig();
        $config = $system_config_model->getSystemConfig()['data'] ?? [];
        $is_open_queue = $config['is_open_queue'] ?? 0;
        $query_execute_time = $is_open_queue == 1 ? time() + 60 : time();
        $list = model('cron')->getList([['execute_time', '<=', $query_execute_time]]);
        if (!empty($list)) {
            foreach ($list as $k => $v) {
                $event_res = checkQueue($v, function ($params) {
                    //加入消息队列
                    $job_handler_classname = 'Cronexecute';
                    try {
                        if ($params['execute_time'] <= time()) {
                            Queue::push($job_handler_classname, $params);
                        } else {
                            Queue::later($params['execute_time'] - time(), $job_handler_classname, $params);
                        }
                    } catch (\Exception $e) {
                        $res = $this->error($e->getMessage(), $e->getMessage());
                    }
                    return $res ?? $this->success();
                }, function ($params) {
                    try {
                        $res = event($params['event'], ['relate_id' => $params['relate_id']]);
                    } catch (\Exception $e) {
                        $res = $this->error($e->getMessage(), $e->getMessage());
                    }
                    $data_log = [
                        'name' => $params['name'],
                        'event' => $params['event'],
                        'relate_id' => $params['relate_id'],
                        'message' => json_encode($res)
                    ];
                    $this->addCronLog($data_log);
                    return $res;
                });
                //定义最新的执行时间或错误
                $event_code = $event_res['code'] ?? 0;
                if ($event_code < 0) {
                    Log::write($event_res);
                    continue;
                }
                //循环任务
                if ($v['type'] == 2) {
                    $period = $v['period'] == 0 ? 1 : $v['period'];
                    switch ($v['period_type']) {
                        case 0://分
                            $execute_time = $v['execute_time'] + $period * 60;
                            break;
                        case 1://天
                            $execute_time = strtotime('+' . $period . 'day', $v['execute_time']);
                            break;
                        case 2://周
                            $execute_time = strtotime('+' . $period . 'week', $v['execute_time']);
                            break;
                        case 3://月
                            $execute_time = strtotime('+' . $period . 'month', $v['execute_time']);
                            break;
                    }
                    model('cron')->update(['execute_time' => $execute_time], [['id', '=', $v['id']]]);
                } else {
                    model('cron')->delete([['id', '=', $v['id']]]);
                }
            }
        }
        $this->setCron();
    }

    /**
     * 添加自动任务日志
     * @param $data
     * @return array
     */
    public function addCronLog($data)
    {
        // 日常不需要添加，调试使用
        $data['execute_time'] = time();
        model('cron_log')->add($data);
        return $this->success();
    }


    /**
     * 检测自动任务标识缓存是否已过期
     */
    public function checkCron()
    {
        $diff = $this->time_diff;
        $now_time = time();
        $cron_cache = Cache::get('cron_cache');
        if (empty($cron_cache)) {
            //todo 不存在缓存标识,并不视为任务停止
            //创建缓存标识,当前时间填充
            Cache::set('cron_cache', ['time' => $now_time, 'error' => '']);
        } else {
            $time = $cron_cache['time'];
            $error = $cron_cache['error'] ?? '';
            $attempts = $cron_cache['attempts'] ?? 0;//尝试次数
            if (!empty($error) || ($now_time - $time) > $diff) {
                $message = '自动任务已停止';
                if (!empty($error)) {
                    $message .= ',停止原因:' . $error;
                } else {
                    $system_config_model = new \app\model\system\SystemConfig();
                    $config = $system_config_model->getSystemConfig()['data'] ?? [];
                    $is_open_queue = $config['is_open_queue'] ?? 0;
                    if (!$is_open_queue) {//如果不是消息队列的话,可以尝试异步调用一下
                        if ($attempts < 1) {
                            Cache::set('cron_cache', ['time' => $now_time, 'error' => '', 'attempts' => 1]);
                            $url = url('cron/task/execute');
                            http($url, 1);
                            return $this->success();
                        }
                    } else {
                        //消息队列无法启动,应该在前端引导跳转到官方的手册
                    }
                }
                //判断任务是 消息队列自动任务,还是默认睡眠sleep自动任务
                return $this->error([], $message);
            }
        }
        return $this->success();
    }

    /**
     * 设置自动任务
     * @param $params
     */
    public function setCron($params = [])
    {
        $cron_cache = Cache::get('cron_cache');
        if (empty($cron_cache)) {
            $cron_cache = [];
        }
        $cron_cache['time'] = time();
        $cron_cache['attempts'] = 0;
        Cache::set('cron_cache', $cron_cache);
        return $this->success();
    }
}