using LitJson;
using Sog;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Net.Http.Json;
using System.Text;
using System.Threading.Tasks;

namespace Chat
{
    public static class WechatCheckSvc
    {
        private static string accessToken = null;
        private static long expireTimeSec = 0;

        public static void CheckFreshAccessToken(bool force = false)
        {
            long now = ChatServerUtils.GetTimeSecond();
            if(now > expireTimeSec || force)
            {
                //https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=APPID&secret=APPSECRET
                string url = "https://api.weixin.qq.com/cgi-bin/stable_token";
                LitJson.JsonData j = new JsonData();
                j["grant_type"] = "client_credential";
                j["appid"] = ChatServerUtils.GetServerConfig().wxAppId;
                j["secret"] = ChatServerUtils.GetServerConfig().wxSecret;
                j["force_refresh"] = false;
                var cont = j.ToJson();
                HttpContent content = new StringContent(cont, Encoding.UTF8, "application/json");
                string ret = HttpUtils.HttpPost(url, content,  out bool exception);
                TraceLog.Debug("WechatCheckSvc.checkFreshAccessToken, get ret:{0}", ret);

                if (ret == null)
                { 
                    return  ;
                }

                LitJson.JsonData jsonData = JsonMapper.ToObject(ret);
                //if (jsonData.ContainsKey("errcode"))
                //{
                //    LitJson.JsonData errCode = jsonData["errcode"];
                //    LitJson.JsonData errMsg = jsonData["errmsg"];
                //    if (errCode.ToString() != "0")
                //    {
                //        TraceLog.Error("checkFreshAccessToken , msdk server ack failed, accountid:{0} errCode {1} errMsg:{2}", 0, errCode.ToString(), errMsg.ToString());
                //        return  ;
                //    }
                //}
                accessToken = jsonData["access_token"].ToString();
                expireTimeSec = now + ((long)jsonData["expires_in"]);
            }
        }

        public static bool CheckDirtyName(string name)
        {
            CheckFreshAccessToken();
            string url = "https://api.weixin.qq.com/wxa/game/content_spam/msg_sec_check?access_token="+accessToken;
            var allParams = new Dictionary<string, string>();
            allParams["scene"] = "1";
            allParams["version"] = "2";
            allParams["content"] = name; 
            var content = new FormUrlEncodedContent(allParams);
            string ret = HttpUtils.HttpPost(url, content, out bool exception);
            TraceLog.Trace("WechatCheckSvc.CheckDirtyName, get ret:{0}", ret);

            if (ret == null)
            {
                return false;
            }

            LitJson.JsonData jsonData = JsonMapper.ToObject(ret);
            if (jsonData.ContainsKey("errcode"))
            {
                LitJson.JsonData errCode = jsonData["errcode"];
                LitJson.JsonData errMsg = jsonData["errmsg"];
             
                if (errCode.ToString() != "0")
                {
                    int code = int.Parse(errCode.ToString());
                    if(code == 40001)//access_token 无效或不为最新获取的 access_token，请开发者确认access_token的有效性
                    {
                        CheckFreshAccessToken(true);
                        return CheckDirtyName(name);
                    }
                    TraceLog.Error("CheckDirtyName , msdk server ack failed, accountid:{0} errCode {1} errMsg:{2}", 0, errCode.ToString(), errMsg.ToString());
                    return false;
                }
                LitJson.JsonData res = jsonData["result"];
                if (res.ContainsKey("suggest") && res["suggest"].ToString() == "pass")
                {
                    return true;
                }
            }
            return false;
        }
    }
}