using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

using RabbitMQ.Client;
using RabbitMQ.Client.Events;
 

namespace RPCServer
{
    class Program
    {
        static void Main(string[] args)
        {
            var factory = new ConnectionFactory() { HostName = "47.100.163.48", UserName = "admin", Password = "QMS@Adm06" };
             var connection = factory.CreateConnection();
                var channel = connection.CreateModel();
            {
                channel.QueueDeclare(queue: "rpc_queue", durable: false,
                  exclusive: false, autoDelete: false, arguments: null);
                channel.BasicQos(0, 1, false);
                var consumer = new EventingBasicConsumer(channel);
                channel.BasicConsume(queue: "rpc_queue",
                  autoAck: false, consumer: consumer);
                Console.WriteLine(" [x] Awaiting RPC requests");

                consumer.Received += (model, ea) =>
                {
                    string response = null;

                    var body = ea.Body;
                    var props = ea.BasicProperties;
                    var replyProps = channel.CreateBasicProperties();
                    replyProps.CorrelationId = props.CorrelationId;

                    Console.WriteLine(replyProps.CorrelationId);
                    try
                    {
                        var message = Encoding.UTF8.GetString(body);
                        Console.WriteLine(message);

                        
                        response = "{code:100,msg:have received}";
                    }
                    catch (Exception e)
                    {
                        Console.WriteLine(" [.] " + e.Message);
                        response = "";
                    }
                    finally
                    {
                        var responseBytes = Encoding.UTF8.GetBytes(response);
                        channel.BasicPublish(exchange: "", routingKey: props.ReplyTo,
                          basicProperties: replyProps, body: responseBytes);
                        channel.BasicAck(deliveryTag: ea.DeliveryTag,
                          multiple: false);
                    }
                };


            }
            }


        private static int fib(int n)
        {
            if (n == 0 || n == 1)
            {
                return n;
            }

            return fib(n - 1) + fib(n - 2);
        }

    }
}