using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Http;
using System.Web.Mvc;
using System.Web.Optimization;
using System.Web.Routing;

namespace ChatRoomServer.Www
{
	using System.IO;
	using System.Timers;
	using ChatRoomServer.Www.Areas.Web.Models;
	using Newtonsoft.Json;
	using Newtonsoft.Json.Serialization;

	public class MvcApplication : System.Web.HttpApplication
	{
		Timer _cacheUpdateCacheTimer;
		public static DateTime CacheUpdateStartTime;
		public static DateTime LastCacheUpdateTime;
		static string _hostFile;
		public static HostResolveCache HostResolveCache { get; private set; }

		static MvcApplication()
		{
			_hostFile = System.Web.Hosting.HostingEnvironment.MapPath("~/data/12306host.config");
			if (File.Exists(_hostFile))
				HostResolveCache = Newtonsoft.Json.JsonConvert.DeserializeObject<HostResolveCache>(System.IO.File.ReadAllText(_hostFile));
			else HostResolveCache = new HostResolveCache();
		}

		protected void Application_Start()
		{
			AreaRegistration.RegisterAllAreas();
			GlobalConfiguration.Configure(WebApiConfig.Register);
			FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
			RouteConfig.RegisterRoutes(RouteTable.Routes);
			BundleConfig.RegisterBundles(BundleTable.Bundles);

			//set json naming method
			var cfg = GlobalConfiguration.Configuration.Formatters.JsonFormatter.SerializerSettings;
			cfg.Formatting = Formatting.None;
			cfg.ContractResolver = new CamelCasePropertyNamesContractResolver();
			RouteTable.Routes.RouteExistingFiles = false;
			RouteTable.Routes.AppendTrailingSlash = true;
			RouteTable.Routes.LowercaseUrls = true;

			//定时器
			_cacheUpdateCacheTimer = new Timer(1000 * 60 * 10);
			_cacheUpdateCacheTimer.AutoReset = true;
			_cacheUpdateCacheTimer.Elapsed += UpdateCacheToDb;
			_cacheUpdateCacheTimer.Start();
			CacheUpdateStartTime = DateTime.Now;
		}

		void UpdateCacheToDb(object sender, EventArgs e)
		{
			LastCacheUpdateTime = DateTime.Now;
			System.IO.File.Copy(_hostFile, _hostFile + DateTime.Now.ToString("yyyy-MM-dd") + ".bak", true);
			System.IO.File.WriteAllText(_hostFile, JsonConvert.SerializeObject(HostResolveCache));
		}
	}
}