<?php

namespace app\main\service;

use app\main\constants\MqConstants;
use app\main\InternalInterface\SingletonService;

class ChangeMenuService extends BaseService {

    const EXCHANGE_NAME ='cps.ex.topic';

    private $map = [
        'is_push' => true,
        'find' => null,
        'channel' => null,
        'replace' => null,
        'params' => null,
    ];

    /**
     * @var ChangeMenuService
     */
    protected static $self = null;
    /**
     * @return BaseService|ChangeMenuService
     */
    public static function instance()
    {
        if (self::$self == NULL) {
            self::$self = new self();
        }
        return self::$self;
    }

    /**
     * 不推送到微信
     */
    public function noPushWeChat(){
        $this->map['is_push'] = false;
        return $this;
    }

    /**
     * 设置要查找替换的域名
     * @param $host
     * @return $this
     * @throws \Exception
     */
    public function setFindHost($host){
        if(!is_string($host)){
            throw new \Exception("参数错误");
        }
        $this->map['find'] = $host;
        return $this;
    }

    /**
     * 根据业务域名ID查找替换
     * @param int $host_id
     * @return $this
     * @throws \Exception
     */
    public function setFindHostById($host_id){
        if(!is_numeric($host_id)){
            throw new \Exception("参数错误");
        }
        $host_info = model('Ophost')->getInfoById($host_id);
        $host = $host_info['host'] ?? null;
        $this->map['find'] = $host;
        return $this;
    }

    /**
     * 设置要替换的域名ID
     * @param int $host_id
     * @return $this
     * @throws \Exception
     */
    public function setReplaceHostById($host_id){
        if(!is_numeric($host_id)){
            throw new \Exception("参数错误");
        }
        $host_info = model('Ophost')->getInfoById($host_id);
        $host = $host_info['host'] ?? null;
        $this->map['replace'] = $host;
        return $this;
    }

    /**
     * 设置要替换的域名
     * @param $host
     * @return $this
     * @throws \Exception
     */
    public function setReplaceHost($host){
        if(!is_string($host)){
            throw new \Exception("参数错误");
        }
        $this->map['replace'] = $host;
        return $this;
    }

    /**
     * 设置要替换的渠道ID
     * @param $channel_id
     * @return ChangeMenuService
     */
    public function setChannelId($channel_id){
        $this->map['channel'] = $channel_id;
        return $this;
    }

    /**
     * 设置要追加的参数
     * @param array $params
     * @return $this
     */
    public function setAppendParams(array $params){
        $this->map['params'] = $params;
        return $this;
    }

    /**
     * 推送MQ消息
     */
    public function push(){
        $mq = MqService::instance()->getDotMqInstance();
        $mq->transferExchange($this->map, self::EXCHANGE_NAME, MqConstants::CHANNEL_CHANGE_MENU, 'topic');
    }
}