using MESWebSite.CommonClass;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace MESWebSite.HttpHandlers
{
    public abstract class BaseHandler : IHttpHandler
    {
        public bool IsReusable
        {
            get
            {
                return false;
            }
        }

        public string Page
        {
            get 
            {
                return GetParam("page").DefaultValue("0");
            }
        }

        public string Rows
        {
            get
            {
                return GetParam("rows").DefaultValue("15");
            }
        }

        public HttpRequest Request = null;
        public HttpResponse Response = null;
        public Dictionary<string, Action> MethodDict;

        public BaseHandler()
        {
            MethodDict = new Dictionary<string, Action>();
            RegisterAction(QueryList);
            RegisterAction(SaveInfo);
            RegisterAction(DelInfo);
        }

        protected void RegisterAction(Action action)
        {
            MethodDict.Add(action.Method.Name, action);
        }

        public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";
            Request = context.Request;
            Response = context.Response;
            string method = Request.Params["method"];
            MethodDict[method]();
        }

        public string GetParam(string name) { 
            return Request.Params[name]; 
        }

        protected abstract void QueryList();
        protected abstract void SaveInfo();
        protected abstract void DelInfo();
    }
}