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    use std::{fs, path::Path, net::{IpAddr,SocketAddr}};
    use axum::http::{header::FORWARDED, HeaderMap};
    use forwarded_header_value::{ForwardedHeaderValue, Identifier};

    use crate::defs::{
        Config as ServerConfig,
        AUTHORIZATION,
        REFERER,
        BEARER,
        USER_AGENT,
        ACCEPT_LANGUAGE,
        X_FORWARDED_FOR,
        X_REAL_IP,
        X_INTERNAL,
        SESSION_ID,
        FILE_SCHEME,
        AppDBs,
        UserId,
    };

    use crate::defs::UserNotifyData;

    pub struct ReqHeaderMap {
        pub header: HeaderMap,
        pub req_path: Vec<String>,
    }

    impl ReqHeaderMap {
        pub fn new(header: HeaderMap, request_path: &str) -> Self {
            let req_path =
                Self::req_end_path(request_path)
                .split(",").map(|s| s.to_string())
                .collect();
            ReqHeaderMap {
                header,
                req_path,
            }
        }
        pub fn req_end_path(req_path: &str) -> String {
            let arr_req_path: Vec<String> = req_path.split("/").map(|s| s.to_string()).collect();
            format!("{}",arr_req_path[arr_req_path.len()-1])
        }
        pub fn req_user(&self, app_dbs: &AppDBs) -> (String, UserNotifyData) {
            let token = self.auth();
            if !token.is_empty() {
                // dbg!(&token);
                return UserNotifyData::from_token(&token, &app_dbs.config.paseto);
            } else {
                let arr_req_path: Vec<String> = self.req_path.iter()
                    .filter(|it| it.contains(SESSION_ID))
                    .map(|s| s.to_string())
                    .collect();
                if arr_req_path.len() > 0 && arr_req_path[0].contains(SESSION_ID) {
                    let req_sid = format!("{}",&arr_req_path[0].replace(SESSION_ID, ""));
                    if let Some(uid) = UserId::from(&req_sid) {
                        let id_path = format!("{}/{}", &app_dbs.config.users_store_uri.replace(FILE_SCHEME, ""), &uid);
                        if ! Path::new(&id_path).exists() {
                            let _ = fs::create_dir(&id_path);
                        }
                        let id = format!("{}",uid);
                        return (
                            id.to_owned(),
                            UserNotifyData{
                                key: String::from(SESSION_ID),
                                auth: id.to_owned(),
                                id,
                            }
                        );
                    }
                }
            }
            (String::from(""), UserNotifyData::default())
        }
        #[allow(dead_code)]
        pub fn req_path_clean(&self) -> Vec<String> {
            let arr_value: Vec<String> =
                self.req_path.iter()
                .filter(|it| !it.contains(SESSION_ID))
                .map(|s| s.to_string())
                .collect();
            // if path has sid, this will make an empty value and arr_value.len() will be 1
            if arr_value.len() == 1 && arr_value[0].is_empty() {
                Vec::new()
            } else {
                arr_value
            }
        }
        #[allow(dead_code)]
        pub fn req_path_contains(&self,value: &str) -> Vec<String> {
            let arr_value: Vec<String> =
                self.req_path.iter()
                .filter(|it| it.contains(value))
                .map(|s| s.to_string())
                .collect();
            if arr_value.len() == 0 || arr_value[0].is_empty() {
                Vec::new()
            } else {
                arr_value
            }
        }
        pub fn auth(&self) -> String {
            if let Some(auth) = self.header.get(AUTHORIZATION) {
                format!("{}",auth.to_str().unwrap_or("").replace(&format!("{} ", BEARER),""))
            } else {
                String::from("")
            }
        }
        #[allow(dead_code)]
        pub fn referer(&self) -> String {
            if let Some(referer) = self.header.get(REFERER) {
                format!("{}",referer.to_str().unwrap_or(""))
            } else {
                String::from("")
            }
        }
        #[allow(dead_code)]
        pub fn internal(&self) -> String {
            if let Some(internal) = self.header.get(X_INTERNAL) {
                format!("{}",internal.to_str().unwrap_or(""))
            } else {
                String::from("")
            }
        }
        pub fn is_browser(&self) -> bool {
            if let Some(user_agent) = self.header.get(USER_AGENT) {
                let agent = user_agent.to_str().unwrap_or("");
                if agent.contains("Mozilla") {
                    true
                } else if agent.contains("WebKit") {
                    true
                } else if agent.contains("Chrome") {
                    true
                } else {
                    false
                }
            } else {
                false
            }
        }
        #[allow(dead_code)]
        pub fn is_curl(&self) -> bool {
            if let Some(user_agent) = self.header.get(USER_AGENT) {
                let agent = user_agent.to_str().unwrap_or("");
                if agent.contains("curl") {
                    true
                } else {
                    false
                }
            } else {
                false
            }
        }
        pub fn is_wget(&self) -> bool {
            if let Some(user_agent) = self.header.get(USER_AGENT) {
                let agent = user_agent.to_str().unwrap_or("").to_lowercase();
                if agent.contains("wget") {
                    true
                } else {
                    false
                }
            } else {
                false
            }
        }
        #[allow(dead_code)]
        pub fn response_user_agent_html(&self) -> bool {
            if let Some(user_agent) = self.header.get(USER_AGENT) {
                let agent = user_agent.to_str().unwrap_or("").to_lowercase();
                agent.contains("curl") || agent.contains("wget")
            } else {
                false
            }
        }
        #[allow(dead_code)]
        pub fn agent(&self) -> String {
            if let Some(user_agent) = self.header.get(USER_AGENT) {
                user_agent.to_str().unwrap_or("").to_owned()
            } else {
                String::from("")
            }
        }
        #[allow(dead_code)]
        pub fn lang(&self, config: &ServerConfig) -> String {
            if let Some(langs) = self.header.get(ACCEPT_LANGUAGE) {
                let langs_data = langs.to_str().unwrap_or("");
                if langs_data.is_empty() {
                    format!("{}",config.dflt_lang)
                } else {
                    let arr_langs: Vec<String> = langs_data.split(",").map(|s| s.to_string()).collect();
                    let arr_lang: Vec<String> = arr_langs[0].split("-").map(|s| s.to_string()).collect();
                    format!("{}",arr_lang[0])
                }
            } else {
                format!("{}",config.dflt_lang)
            }
        }
        /// Tries to parse the `x-real-ip` header
        #[allow(dead_code)]
        fn maybe_x_forwarded_for(&self) -> Option<IpAddr> {
            self.header
                .get(X_FORWARDED_FOR)
                .and_then(|hv| hv.to_str().ok())
                .and_then(|s| s.split(',').find_map(|s| s.trim().parse::<IpAddr>().ok()))
        }

        /// Tries to parse the `x-real-ip` header
        #[allow(dead_code)]
        fn maybe_x_real_ip(&self) -> Option<IpAddr> {
            self.header
                .get(X_REAL_IP)
                .and_then(|hv| hv.to_str().ok())
                .and_then(|s| s.parse::<IpAddr>().ok())
        }

        /// Tries to parse `forwarded` headers
        #[allow(dead_code)]
        fn maybe_forwarded(&self) -> Option<IpAddr> {
            self.header
                .get_all(FORWARDED).iter().find_map(|hv| {
                    hv.to_str()
                        .ok()
                        .and_then(|s| ForwardedHeaderValue::from_forwarded(s).ok())
                        .and_then(|f| {
                            f.iter()
                                .filter_map(|fs| fs.forwarded_for.as_ref())
                                .find_map(|ff| match ff {
                                    Identifier::SocketAddr(a) => Some(a.ip()),
                                    Identifier::IpAddr(ip) => Some(*ip),
                                    _ => None,
                                })
                        })
            })
        }
        #[allow(dead_code)]
        pub fn ip(&self, addr: &SocketAddr) -> String {
            if let Some(ip) = self.maybe_x_real_ip()
                .or_else(||self.maybe_x_forwarded_for())
                .or_else(|| self.maybe_forwarded())
                .or_else(|| None )
            {
                format!("{}",ip)
            } else {
                format!("{}",addr)
            }
        }
    }