using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;

namespace Weee.Filter
{
    public class MvcLogAttribute : ActionFilterAttribute, IActionFilter
    {
        private string _ActionDisplayName;
        private string _ModuleDisplayName;
        public MvcLogAttribute(string ActionDisplayName = null,string ModuleDisplayName=null)
        {
            _ActionDisplayName = ActionDisplayName;
            _ModuleDisplayName = ModuleDisplayName;
        }
        public Weee.DAL.WeeeDataContext db { get; set; }
        public override void OnActionExecuted(ActionExecutedContext filterContext)
        {
            var user = ((Controller)filterContext.Controller).ModelState["Username"] == null ?
                        filterContext.HttpContext.User == null ?
                        "" :
                        filterContext.HttpContext.User.Identity.Name :
                        ((Controller)filterContext.Controller).ModelState["Username"].Value.AttemptedValue;

            String message =
                    String.Format(
                    "Method=[{0}] ,User=[{1}], Action=[{2}], Controller=[{3}], IPAddress=[{4}]" +
                    "TimeStamp=[{5}]",
                    "OnActionExecuted",
                    user,
                    _ActionDisplayName??filterContext.ActionDescriptor.ActionName,
                    _ModuleDisplayName??filterContext.ActionDescriptor.ControllerDescriptor.ControllerName,
                    filterContext.HttpContext.Request.UserHostAddress,
                    DateTime.Now);

            System.Diagnostics.Debug.WriteLine(message);

            var log = new Weee.Models.ActionLog()
            {
                Name = user,
                Action = _ActionDisplayName??filterContext.ActionDescriptor.ActionName,
                Controller = _ModuleDisplayName??filterContext.ActionDescriptor.ControllerDescriptor.ControllerName,
                IP = filterContext.HttpContext.Request.UserHostAddress,
                ActionTime = DateTime.Now,
                ExecuteResult = 
                filterContext.Exception == null ? ((Controller)filterContext.Controller).ModelState.IsValid?
                    "success":"fail" : "exception: " + filterContext.Exception.Message + "\nstacktrace: " 
                        + filterContext.Exception.StackTrace
            };
                db.ActionLogs.Add(log);
                db.SaveChanges();

            base.OnActionExecuted(filterContext);
        }
    }
}