<?php
namespace App\JsonRpc;

use Hyperf\RpcServer\Annotation\RpcService;
use PhpAmqpLib\Connection\AMQPStreamConnection;
use PhpAmqpLib\Message\AMQPMessage;
use Swoole\Exception;

/**
 * @RpcService(name="RabbitMqService", protocol="jsonrpc-http", server="jsonrpc-http", publishTo="consul")
 */
class RabbitMqService implements RabbitMqServiceInterface
{
    //MQ的默认连接配置
    public $config = array(
        'host' => '192.168.0.244', //ip
        'port' => '5672',      //端口号
        'user' => 'guest',     //用户
        'password' => 'guest', //密码
        'vhost' => '/'         //虚拟host
    );

    public $connection;     //链接
    public $channel;        //信道

    public $exchangeName = 'exchange';     //交换机名
    public $queueName = 'queue';        //队列名
    public $routeKey = 'routeKey';         //路由键
    public $exchangeType = 'direct';    //交换机类型

    public $autoAck = true; //是否自动ack应答

    public function __construct(string $exchangeName = null, string $queueName = null, string $routeKey = null, string $exchangeType = 'direct', array $config = [])
    {
        $this->exchangeName = empty($exchangeName) ? '' : $exchangeName;
        $this->queueName = empty($queueName) ? '' : $queueName;
        $this->routeKey = empty($routeKey) ? '' : $routeKey;
        $this->exchangeType = empty($exchangeType) ? '' : 'direct';
        if(!empty($config)){
            $this->setConfig($config);
        }
        self::createConnect();

    }

    //创建连接与信道
    public function createConnect()
    {
        $host = $this->config['host'];
        $port = $this->config['port'];
        $user = $this->config['user'];
        $password = $this->config['password'];
        $vhost = $this->config['vhost'];
        if(empty($host) || empty($port) || empty($user) || empty($password))
        {
            return 'RabbitMQ的连接配置不正确';
        }
        //创建链接
        $this->connection = new AMQPStreamConnection($host, $port, $user, $password, $vhost);
        //创建信道
        $this->channel = $this->connection->channel();
        $this->createExchange();
    }

    //创建交换机
    public function createExchange()
    {
        //创建交换机$channel->exchange_declare($exhcange_name,$type,$passive,$durable,$auto_delete);
        //passive: 消极处理， 判断是否存在队列，存在则返回，不存在直接抛出 PhpAmqpLib\Exception\AMQPProtocolChannelException 异常
        //durable：true、false true：服务器重启会保留下来Exchange。警告：仅设置此选项，不代表消息持久化。即不保证重启后消息还在
        //autoDelete:true、false.true:当已经没有消费者时，服务器是否可以删除该Exchange
        $this->channel->exchange_declare($this->exchangeName, $this->exchangeType, false, true, false);
        //passive: 消极处理， 判断是否存在队列，存在则返回，不存在直接抛出 PhpAmqpLib\Exception\AMQPProtocolChannelException 异常
        //durable：true、false true：在服务器重启时，能够存活
        //exclusive ：是否为当前连接的专用队列，在连接断开后，会自动删除该队列
        //autodelete：当没有任何消费者使用时，自动删除该队列
        //arguments: 自定义规则
        $this->channel->queue_declare($this->queueName, false, true, false, false);
    }

    //发送消息
    public function sendMessage(string $data)
    {
        return 'success';
        //创建消息$msg = new AMQPMessage($data,$properties)
        //#$data  string类型 要发送的消息
        //#roperties array类型 设置的属性，比如设置该消息持久化[‘delivery_mode’=>2]
        $msg = new AMQPMessage($data, array('delivery_mode' => AMQPMessage::DELIVERY_MODE_PERSISTENT));
        $this->channel->basic_publish($msg, $this->exchangeName, $this->routeKey);
    }

    //处理消息
    public function dealMq($flag)
    {
        $this->autoAck = $flag;
        $this->channel->queue_bind($this->queueName, $this->exchangeName, $this->routeKey);
        //prefetchSize：0
        //prefetchCount：会告诉RabbitMQ不要同时给一个消费者推送多于N个消息，即一旦有N个消息还没有ack，则该consumer将block掉，直到有消息ack
        //global：true\false 是否将上面设置应用于channel，简单点说，就是上面限制是channel级别的还是consumer级别
        //$this->channel->basic_qos(0, 1, false);
        //1:queue 要取得消息的队列名
        //2:consumer_tag 消费者标签
        //3:no_local false这个功能属于AMQP的标准,但是rabbitMQ并没有做实现.参考
        //4:no_ack  false收到消息后,是否不需要回复确认即被认为被消费
        //5:exclusive false排他消费者,即这个队列只能由一个消费者消费.适用于任务不允许进行并发处理的情况下.比如系统对接
        //6:nowait  false不返回执行结果,但是如果排他开启的话,则必须需要等待结果的,如果两个一起开就会报错
        //7:callback  null回调函数
        //8:ticket  null
        //9:arguments null
        $this->channel->basic_consume($this->queueName, '', false, $this->autoAck, false, false, function($msg){$this->get($msg);});
        //监听消息
        while(count($this->channel->callbacks)){
            $this->channel->wait();
        }
    }

    public function get($msg)
    {
        $param = $msg->body;
//        $this->doProcess($param);
        if(!$this->autoAck)
        {
            //手动ack应答
            $msg->delivery_info['channel']->basic_ack($msg->delivery_info['delivery_tag']);
        }
    }

    public function doProcess($msg){
        echo $msg.'_Publisher' . "\n";
    }

    public function closeConnect()
    {
        $this->channel->close();
        $this->connection->close();
    }

    public function setConfig($config)
    {
        foreach($config as $key => $value)
        {
            $this->config[$key] = $value;
        }
    }
}