using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Threading;

using Sog;
using SimpleHttpServer;
using LitJson;

namespace SMWebServer
{
    public class HttpApiRootHandler : Singleton<HttpApiRootHandler>
    {
        public static string tokenname = "x-access-token";
        private Route m_RouteConfig;

        public Route Init()
        {
            Route rootRoute = new Route()
            {
                Name = "Root Handler",
                UrlRegex = @"^/api/.*",
                Method = "*",
                Callable = this.ProccessRequest,
            };

            m_RouteConfig = rootRoute;

            return m_RouteConfig;
        }

        public Tuple<bool, string> checktoken(HttpContext queryParams)
        {
            var errres = new Tuple<bool, string>(false, "");
            var Headers = queryParams.httpRequest.Headers;
           
            if (!Headers.ContainsKey(tokenname))
            {
                return errres;
            }
            var token = Headers[tokenname];
            //Headers头部有空格 原因未知 这里单独去掉
            token = token.Replace(" ", "");


            if (!SyncHttpServerService.tokenList.ContainsKey(token))
            {
                return errres;
            }

            long now = SMWebServerUtils.GetTimeSecond();
            if (SyncHttpServerService.tokenList[token].time + 3 * 3600 < now)
            {
                return errres;
            }
            SyncHttpServerService.tokenList[token].time = now;
            return new Tuple<bool, string>(true, token);

        }

        public TokenInfo gettokeninfo(HttpContext queryParams)
        {
            var info = checktoken(queryParams);
            TokenInfo tokeninfo = new TokenInfo();
            if (info.Item1)
            {
                SyncHttpServerService.tokenList.TryGetValue(info.Item2, out tokeninfo);
                return tokeninfo;
            }
            return tokeninfo;
        }
        private void ProccessRequest(HttpContext httpContext)
        {
            TraceLog.Trace("HttpApiRootHandler.ProccessRequest Method {0} url {1}", httpContext.httpRequest.Method, httpContext.httpRequest.Url);

            string funName = GetFuntionNameByUrl(httpContext.httpRequest.Url);

             

            httpContext.httpResponse = new HttpResponse
            {
                ContentAsUTF8 = "no process",
                ReasonPhrase = "OK",
                StatusCode = "200"
            };

            LitJson.JsonData builder = new LitJson.JsonData();

            //权限信息
            TokenInfo tokeninfo=null;
            if (funName != "login" && funName != "install")
            {
                var checksuccess = checktoken(httpContext);
                if (checksuccess.Item1 == false)
                {
                    builder["code"] = 1;
                    builder["msg"] = "请登录";
                    string contJson = builder.ToJson();
                    httpContext.httpResponse.ContentAsUTF8 = contJson;

                    TraceLog.Trace("return content {0}", contJson);
                    return;//这里必须return掉
                }
            }
            else
            {
                //获取用户
                tokeninfo = gettokeninfo(httpContext);
            }


            switch (funName)
            {
                case "login":
                    var  q_Login = httpContext.httpRequest.Content.ToJson<Q_login>();
                    var s_Login = new S_login();
                    new Login().ProccessRequest(q_Login, s_Login);
                    httpContext.httpResponse.ContentAsUTF8 = s_Login.ToJsonstr();
                    return;
                case "getmenu":
                    var q_menu = httpContext.httpRequest.Content.ToJson<Q_menu>();
                    var s_menu = new S_menu();
                    new Menu().ProccessRequest(q_menu, s_menu, tokeninfo);
                    httpContext.httpResponse.ContentAsUTF8 = s_menu.ToJsonstr();
                    return;
                case "gettheservers":
                    var q_TheServers = httpContext.httpRequest.Content.ToJson<Q_TheServers>();
                    var S_TheServers = new S_TheServers();
                    new TheServers().ProccessRequest(q_TheServers, S_TheServers, tokeninfo,httpContext);
                    httpContext.httpResponse.ContentAsUTF8 = S_TheServers.ToJsonstr();
                    return;
            }


            string contentJson = builder.ToJson();
            httpContext.httpResponse.ContentAsUTF8 = contentJson;

            TraceLog.Trace("http fun {0} return content {1}", funName, contentJson);

        }



        private string GetFuntionNameByUrl(string url)
        {
            // "/api/xxxxxxxxxx?param1=yyyy&param2=zzzzz"
            int indexend = url.IndexOf('?');

            if (indexend == -1)
            {
                return url.Split('/')[url.Split('/').Length - 1];
            }
            else
            {
                string newurl = url.Substring(5, indexend - 5);

                if (newurl.IndexOf("/") == -1)
                {
                    return newurl;
                }
                else
                {
                    return newurl.Substring(0, newurl.IndexOf("/"));
                }
            }




        }
    }
}