using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Http;
using System.Web.Http.Controllers;
using JWT;
using WebApplication1;
using ICSSoft.Frame.Data.Entity;
using System.Net.Http;
using Newtonsoft.Json;
using System.Web.Http.Filters;

namespace WebApplication1.Attributes
{
    public class ApiAuthorize : AuthorizeAttribute
    {

        public override void OnAuthorization(HttpActionContext actionContext)
        {


            var authorization = actionContext.Request.Headers.Authorization;
            if ((authorization != null) && (authorization.Parameter != null))
            {
                //校验Token是否合法
                try
                {
                    if (JwtHelper.Validate(authorization.Parameter))
                    {
                        base.IsAuthorized(actionContext);
                    }

                }
                catch (Exception ex)
                {
                    HttpContext.Current.Items.Add("error", ex.Message);

                    HandleUnauthorizedRequest(actionContext);
                }
            }
            //接口需要权限认证，但无Token,返回拒绝响应此请求
            else
            {
                var attributes = actionContext.ActionDescriptor.GetCustomAttributes<AllowAnonymousAttribute>().OfType<AllowAnonymousAttribute>();
                bool isAnonymous = attributes.Any(a => a is AllowAnonymousAttribute);
                if (isAnonymous) base.OnAuthorization(actionContext);

                else
                {
                    HttpContext.Current.Items.Add("error", "请传入tocken值!");
                    HandleUnauthorizedRequest(actionContext);
                }
            }



        }

        protected override void HandleUnauthorizedRequest(HttpActionContext actionContext)
        {
            base.HandleUnauthorizedRequest(actionContext);
            actionContext.Response.StatusCode = System.Net.HttpStatusCode.Forbidden;
            var result = new Result()
            {
                code = "400",
                msg = HttpContext.Current.Items["error"].ToString()

            };

            actionContext.Response.Content = new StringContent(JsonConvert.SerializeObject(result));

        }












    }


}