using System;
using System.Collections.Generic;
using System.Text;
using RabbitMQ.Client;
using RabbitMQ.Client.Events;
using Library;
using System.Threading;
using LitJson;

namespace MySystem
{
    public class RabbitMQClient
    {
        public readonly static RabbitMQClient Instance = new RabbitMQClient();
        string UserName,Password,HostName,VirtualHostName;
        private RabbitMQClient()
        {
            UserName = ConfigurationManager.AppSettings["MqUserName"].ToString();
            Password = ConfigurationManager.AppSettings["MqPassword"].ToString();
            HostName = ConfigurationManager.AppSettings["MqHostName"].ToString();
            VirtualHostName = ConfigurationManager.AppSettings["MqVirtualHostName"].ToString();
        }

        #region 单对单发送
        public void SendMsg(string content, string QueueName, uint delayMilliseconds = 0)
        {
            if(delayMilliseconds > 0)
            {
                // 设置消息的延迟时间
                var properties = _channel_send.CreateBasicProperties();
                properties.Headers = new Dictionary<string, object>
                {
                    { "x-delay", delayMilliseconds } // 延迟5秒
                };
                _channel_send.BasicPublish("kxs_direct_ranch", QueueName, properties, Encoding.Default.GetBytes(content));
            }
            else
            {
                _channel_send.BasicPublish("", QueueName, null, Encoding.Default.GetBytes(content));
            }
            function.WriteLog(DateTime.Now.ToString() + "\n" + QueueName + "\n" + content + "\n\n\n", "SendMsg2");
        }
        #endregion

        #region 单对单接收
        public static IModel _channel_send;
        public void CreateConn(string QueueName)
        { 
            var factory = new ConnectionFactory()
            {
                UserName = UserName,
                Password = Password,
                AutomaticRecoveryEnabled = true,  //如果connection挂掉是否重新连接
                TopologyRecoveryEnabled = true,  //连接恢复后，连接的交换机，队列等是否一同恢复
                VirtualHost = VirtualHostName,
            };
            List<AmqpTcpEndpoint> p = new List<AmqpTcpEndpoint>();
            string[] HostNames = HostName.Split(',');
            foreach (string subHostName in HostNames)
            {
                string[] subHostNameData = subHostName.Split(':');
                p.Add(new AmqpTcpEndpoint(subHostNameData[0], int.Parse(subHostNameData[1])));
            }
            var conn = factory.CreateConnection(p);
            _channel_send = conn.CreateModel();
            _channel_send.ExchangeDeclare("kxs_direct_ranch", "x-delayed-message", true);
            _channel_send.QueueDeclare(QueueName, true, false, false);
            string routingKey = "delayed_routing_key";
            IDictionary<string, object> arguments = new Dictionary<string, object>
            {
                { "x-delayed-type", "direct" } // 这里可以指定不同的交换机类型
            };
            _channel_send.QueueBind(QueueName, "kxs_direct_ranch", routingKey, arguments);
        }

        public static IConnection _connection;
        public void CreateConn()
        { 
            var factory = new ConnectionFactory()
            {
                UserName = UserName,
                Password = Password,
                AutomaticRecoveryEnabled = true,  //如果connection挂掉是否重新连接
                TopologyRecoveryEnabled = true,  //连接恢复后，连接的交换机，队列等是否一同恢复
                RequestedHeartbeat = TimeSpan.FromMinutes(1),
                VirtualHost = VirtualHostName,
            };
            List<AmqpTcpEndpoint> p = new List<AmqpTcpEndpoint>();
            string[] HostNames = HostName.Split(',');
            foreach (string subHostName in HostNames)
            {
                string[] subHostNameData = subHostName.Split(':');
                p.Add(new AmqpTcpEndpoint(subHostNameData[0], int.Parse(subHostNameData[1])));
            }
            _connection = factory.CreateConnection(p);
        }
        public void StartReceive(string QueueName)
        {
            if (_connection == null)
            {
                CreateConn();
            }
            else if (!_connection.IsOpen)
            {
                CreateConn();
            }
            var channel = _connection.CreateModel();
            channel.QueueBind(QueueName, "kxs_direct_ranch", QueueName);
            EventingBasicConsumer consumer = new EventingBasicConsumer(channel);
            consumer.Received += (a, e) =>
            {
                string MsgContent = Encoding.Default.GetString(e.Body.ToArray());
                if(QueueName == "KXS_DEPOSIT_QUEUE")
                {
                    if(ChangePosFeeQueue.Instance.ChangePosDeposit(MsgContent))
                    {
                        channel.BasicAck(e.DeliveryTag, true); //收到回复后，RabbitMQ会直接在队列中删除这条消息
                    }
                }
                if(QueueName == "KXS_FEE_QUEUE")
                {
                    if(SetDepositPostService.Instance.ChangeFee(MsgContent))
                    {
                        channel.BasicAck(e.DeliveryTag, true); //收到回复后，RabbitMQ会直接在队列中删除这条消息
                    }
                }
            };
            channel.BasicConsume(QueueName, false, consumer);
        }
        #endregion

    }
}