using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;

namespace WcfControlMonitorWebLib
{
    /// <summary>
    /// HTTP 请求的扩展方法
    /// </summary>
    internal static class RequestExtension
    {
        /// <summary>
        /// 获取令牌，即服务端对应的 Session id
        /// </summary>
        internal static string Token(this HttpRequestMessage request)
        {
            if (request.Headers.Contains("token"))
            {
                return request.Headers.GetValues("token").First();
            }
            else
            {
                return null;
            }
        }

        /// <summary>
        /// 以动态类型解析请求数据
        /// </summary>
        internal static dynamic Data(this HttpRequestMessage request)
        {
            return request.Data<dynamic>();
        }

        /// <summary>
        /// 解析请求数据，并尝试转换为指定类型
        /// </summary>
        internal static T Data<T>(this HttpRequestMessage request)
        {
            var obj = new JObject();
            foreach (KeyValuePair<string, object> item in request.GetRouteData()?.Values)
            {
                obj.Add(item.Key, new JValue(item.Value));
            }
            foreach (KeyValuePair<string, string> item in request.GetQueryNameValuePairs())
            {
                obj.Add(item.Key, item.Value);
            }
            var task = request.Content.ReadAsAsync<JToken>();
            task.Wait();
            if (task.Result != null)
            {
                foreach (var item in task.Result)
                {
                    obj.Add(item);
                }
            }
            return obj.ToObject<T>();
        }
    }
}