using DSWeb.Common.Model;
using Newtonsoft.Json.Linq;
using StackExchange.Redis;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;

namespace DSWeb.EventBus
{
    /// <summary>
    /// 事件消息处理抽象父类
    /// </summary>
    public abstract class EventProcessor
    {
        /// <summary>
        /// 处理消息
        /// </summary>
        /// <param name="paraObj"></param>
        public abstract void Process(JObject paraObj);

        /// <summary>
        /// 是否可以处理此类型的消息
        /// </summary>
        /// <param name="type"></param>
        /// <returns></returns>
        public abstract bool CanProcess(EventMessageType type);
    }

    /// <summary>
    /// 时间消息处理器链 
    /// </summary>
    public static class EventProcessChain
    {
        public static void ProcessEvent(EventMessageType type, JObject paraObj)
        {
            var types = Assembly.GetExecutingAssembly().GetTypes();
            var aType = typeof(EventProcessor);
            foreach (var tp in types)
            {
                if (tp.IsSubclassOf(aType))
                {
                    var proc = Activator.CreateInstance(tp) as EventProcessor;
                    if (proc.CanProcess(type))
                    {
                        Task.Run(() =>
                        {
                            proc.Process(paraObj);
                        });
                        break;
                    }
                }
            }
        }
    }
}