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        public RestClient Client { set; get; }
        private RestClientOptions options;
        private RestRequest request;
        public string LSD { set; get; }
        public string Fb_dtsg { set; get; }
        public string Jazoest { set; get; }
        public string ResponseURI { set; get; }
        public string User { set; get; }
        public string UID { set; get; }        
        public string datapost { set; get; }

        private string html;

        


        public RequestFb(string cookies = null, string userAgent = null, string ProxyUrl = null)
        {
            datapost = "";
            User = "";
            Setoptions(userAgent);
            SetProxy(ProxyUrl);
            Client = new RestClient(options);
            SetCookie(cookies);          
        }
        
        public RequestFb(Worker pro)
        {
            datapost = "";
            User = "";
            Setoptions(pro.UserAgent);
            SetProxy(pro.ProxyUrl);
            Client = new RestClient(options);
            SetCookie(pro.Cookie);
        }

        public void ResetToken(string HTML = "")
        {
            if (!string.IsNullOrEmpty(HTML)) html = HTML;
            if (!string.IsNullOrEmpty(html))
            {
                Fb_dtsg = RegexMatch(html.Replace("\\", string.Empty), "DTSGInitialData\",(.*?),{\"token\":\"(.*?)\"").Groups[2].Value;
                Jazoest = RegexMatch(html.Replace("\\", string.Empty), "jazoest=(\\d+)").Groups[1].Value;
                if (string.IsNullOrEmpty(Jazoest)) Jazoest = RegexMatch(html.Replace("\\", string.Empty), "jazoest\",\"version\":2,\"should_randomize\":false},(\\d+)").Groups[1].Value;
                LSD = RegexMatch(html.Replace("\\", string.Empty), "LSD\",(.*?),{\"token\":\"(.*?)\"").Groups[2].Value;
            }
        }
        private void Setoptions(string userAgent)
        {
            if (string.IsNullOrEmpty(userAgent)) userAgent = UserAgentDefaut;
            if (options == null) options = new RestClientOptions() { MaxTimeout = 60000, CookieContainer = new System.Net.CookieContainer(), UserAgent = userAgent, Encoding = Encoding.UTF8, Expect100Continue = true, MaxRedirects = 100, FollowRedirects = true, ThrowOnAnyError = false, FailOnDeserializationError = false, ThrowOnDeserializationError = false , RemoteCertificateValidationCallback = new RemoteCertificateValidationCallback((sender, certificate, chain, policyErrors) => { return true; }), PreAuthenticate = true };
        }
        public string _Cookie { set; get; }
        private void SetCookie(string cookies)
        {
            if (string.IsNullOrEmpty(cookies)) cookies = "locale=vi_VN;";
            _Cookie = cookies;
            if (string.IsNullOrEmpty(UID)) UID = RegexMatch(cookies, "c_user=(\\d+)").Groups[1].Value;
            foreach (string coo in cookies.Split(new[] { ";", " " }, StringSplitOptions.RemoveEmptyEntries))
            {
                if(coo.Contains("useragent=")) continue;
                if (coo.Contains("i_user")) continue;
                string[] temp = coo.Split('=');
                if (temp.Length == 2) Client.CookieContainer.Add(new Cookie(temp[0], temp[1], "/", "facebook.com"));
            }
        }
        public void setDatapost(string uid, string user)
        {
            datapost = $"av={user}&__user={uid}&__a=1&__dyn=&__csr=&__req=&__hs=&dpr=&__ccg=&__rev=&__s=&__hsi=&__comet_req=15&fb_dtsg={Fb_dtsg}&jazoest={Jazoest}&lsd={LSD}&__spin_r=&__spin_b=&__spin_t=&fb_api_caller_class=RelayModern";

        }
        public void SetProxy(string ProxyUrl)
        {
            if (!string.IsNullOrEmpty(ProxyUrl))
            {
                string[] prox = ProxyUrl.Replace(" ","").Replace("|", ":").Split(':');
                string proxyUserName = "";
                string proxyPassword = "";
                string proxyHost = prox[0];
                string proxyPort = "";
                if (!string.IsNullOrEmpty(proxyHost) && prox.Length >= 2)
                {
                    proxyPort = prox[1];
                    var proxy = new WebProxy(proxyHost, int.Parse(proxyPort));
                    if (prox.Length > 2)
                    {
                        proxyUserName = prox[2];
                        proxyPassword = prox[3];
                        proxy.Credentials = new NetworkCredential(userName: proxyUserName, password: proxyPassword);
                    }
                    options.Proxy = proxy;
                }
            }
        }
        
        public Task<string> Post(string url, string data,bool isPage = false)
        {
            var restk = Task.Run(async () =>
            {
                if (string.IsNullOrEmpty(User)) User = UID;
                if (string.IsNullOrEmpty(datapost) || isPage) datapost = $"av={User}&__user={UID}&__a=1&__dyn=&__csr=&__req=&__hs=&dpr=&__ccg=&__rev=&__s=&__hsi=&__comet_req=15&fb_dtsg={Fb_dtsg}&jazoest={Jazoest}&lsd={LSD}&__spin_r=&__spin_b=&__spin_t=&fb_api_caller_class=RelayModern";
                url = url.Replace("{Var:Data}", datapost).Replace("{Var:Fb_dtsg}", Fb_dtsg).Replace("{Var:LSD}", LSD).Replace("{Var:Jazoest}", Jazoest);

                request = new RestRequest(url);
                request.AddHeader("accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9");
                request.AddHeader("sec-fetch-site", "same-origin");
                request.AddHeader("sec-fetch-dest", "empty");
                request.AddHeader("accept-language", "en-US,en;q=0.9");
                request.AddHeader("sec-fetch-mode", "cors");
                request.AddHeader("referer", "https://www.facebook.com/");
                request.AddHeader("sec-ch-ua-platform", "\"Windows\"");
                if (!string.IsNullOrEmpty(LSD)) request.AddHeader("x-fb-lsd", LSD);
                if (string.IsNullOrEmpty(data) || (!data.Contains("&__user=") && !data.Contains("fb_dtsg"))) data = datapost + data;
                else data = data.Replace("{Var:Fb_dtsg}", Fb_dtsg).Replace("{Var:LSD}", LSD).Replace("{Var:Jazoest}", Jazoest);
                request.AddStringBody(data, "application/x-www-form-urlencoded");
                request.Method = Method.Post;
                var res = await Client.ExecuteAsync(request);
                html = res?.Content;
                return res?.Content;
            });
            return restk;
            
        }
        public Task<string> GraphApi(string data)
        {
            var restk = Task.Run(async () =>
            {
                if (string.IsNullOrEmpty(LSD) && _Cookie != "locale=vi_VN;")
                {
                    Get("https://www.facebook.com/").Wait();
                }
                request = new RestRequest("https://www.facebook.com/api/graphql/");
                request.AddHeader("accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9");
                request.AddHeader("sec-fetch-site", "same-origin");
                request.AddHeader("sec-fetch-dest", "empty");
                request.AddHeader("accept-language", "en-US,en;q=0.9");
                request.AddHeader("sec-fetch-mode", "cors");
                request.AddHeader("referer", "https://www.facebook.com/");
                request.AddHeader("sec-ch-ua-platform", "\"Windows\"");
                if (!string.IsNullOrEmpty(LSD))
                {
                    request.AddHeader("x-fb-lsd", LSD);
                    if (string.IsNullOrEmpty(User)) User = UID;
                    if (string.IsNullOrEmpty(datapost) || User != UID) datapost = $"av={User}&__user={UID}&__a=1&__dyn=&__csr=&__req=&__hs=&dpr=&__ccg=&__rev=&__s=&__hsi=&__comet_req=15&fb_dtsg={Fb_dtsg}&jazoest={Jazoest}&lsd={LSD}&__spin_r=&__spin_b=&__spin_t=&fb_api_caller_class=RelayModern";
                }
                if (!string.IsNullOrEmpty(data)) data = data.Replace("{Var:UID}", UID);
                if (!data.Contains("&__user=") && !string.IsNullOrEmpty(UID)) data = datapost + data;
                else data = data.Replace("{Var:Fb_dtsg}", Fb_dtsg).Replace("{Var:LSD}", LSD).Replace("{Var:Jazoest}", Jazoest);
                request.AddStringBody(data, "application/x-www-form-urlencoded");
                request.Method = Method.Post;
                var res = await Client.ExecuteAsync(request);
                html = res?.Content;
                return res?.Content;
            });
            return restk;
        }