# config.rs - source
Source of the Rust file `src/defs/config.rs`.

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    use std::collections::HashMap;
    use serde::{Serialize, Deserialize};
    //use serde_json::value::{to_value, Value};
    //use log::error;
    use std::io::{Error, ErrorKind, Result};

    use pasetoken_lib::ConfigPaSeToken;
    use pasetors::footer::Footer;

    use crate::{
        CFG_FILE_EXTENSION,
        FILE_SCHEME,
        defs::{
            Local, TotpAlgorithm, TotpMode,
            deserialize_totp_algorithm,
            deserialize_totp_mode,
        },
    };

    use std::path::Path;

    // use crate::tools::generate_uuid;

    // fn default_config_empty() -> String {
    //   "".to_string()
    // }
    // fn default_config_items() -> HashMap<String,String> {
    //   HashMap::new()
    // }
    fn default_config_resource() -> String {
      "/".to_string()
    }
    fn default_config_array_resource() -> Vec<String> {
      Vec::new()
    }
    fn default_config_serv_paths()-> Vec<ServPath> {
      Vec::new()
    }
    fn default_config_dflt_lang() -> String {
      "en".to_string()
    }
    // fn default_server_uid() -> String {
    //     generate_uuid(String::from("abcdef0123456789"))
    // }
    fn default_config_org() -> String {
      "".to_string()
    }
    fn default_config_empty() -> String {
      "".to_string()
    }
    fn default_config_locales() -> HashMap<String,Local> {
      HashMap::new()
    }
    fn default_config_tpls() -> HashMap<String,String> {
      HashMap::new()
    }
    fn default_is_restricted() -> bool {
      false
    }
    fn default_config_use_mail() -> bool {
      false
    }
    fn default_config_use_random() -> bool {
       false
    }
    fn default_config_invite_expire() -> u64 {
      300
    }
    fn default_config_web_menu_items() -> Vec<WebMenuItem> {
        Vec::new()
    }
    fn default_web_menu_item_roles() -> Vec<String> {
        Vec::new()
    }
    fn default_sub_menu_items() -> Vec<SubMenuItem> {
        Vec::new()
    }
    fn default_config_totp_digits() -> usize {
        6
    }
    fn default_config_totp_algorithm() -> TotpAlgorithm {
        TotpAlgorithm::default()
    }
    fn default_config_totp_mode() -> TotpMode {
        TotpMode::default()
    }
    fn default_config_password_score() -> u8 {
        0
    }
    #[derive(Debug, Clone, Serialize, Deserialize,Default)]
    pub struct SubMenuItem {
            #[serde(default = "default_config_empty")]
        pub typ: String,
            #[serde(default = "default_config_empty")]
        pub srctyp: String,
            #[serde(default = "default_config_empty")]
        pub text: String,
            #[serde(default = "default_config_empty")]
        pub url: String,
            #[serde(default = "default_web_menu_item_roles")]
        pub roles: Vec<String>,
    }

    #[derive(Debug, Clone, Serialize, Deserialize,Default)]
    pub struct WebMenuItem {
            #[serde(default = "default_config_empty")]
        pub typ: String,
            #[serde(default = "default_config_empty")]
        pub srctyp: String,
            #[serde(default = "default_config_empty")]
        pub text: String,
            #[serde(default = "default_config_empty")]
        pub url: String,
            #[serde(default = "default_web_menu_item_roles")]
        pub roles: Vec<String>,
            #[serde(default = "default_sub_menu_items")]
        pub items: Vec<SubMenuItem>,
    }

    #[derive(Debug, Clone, Serialize, Deserialize,Default)]
    pub struct UiConfig {
            #[serde(default = "default_config_empty")]
        pub css_link: String,
            #[serde(default = "default_config_empty")]
        pub js_link: String,
            #[serde(default = "default_config_empty")]
        pub other_css_link: String,
            #[serde(default = "default_config_empty")]
        pub other_js_link: String,
            #[serde(default = "default_config_empty")]
        pub main_js_link: String,
            #[serde(default = "default_config_empty")]
        pub utils_js_link: String,
            #[serde(default = "default_config_web_menu_items")]
        pub web_menu_items: Vec<WebMenuItem>,
    }

    /// ServPath collects dir path to server as static content
    #[derive(Debug, Clone, Serialize, Deserialize,Default)]
    pub struct ServPath {
            #[serde(default = "default_config_empty")]
        pub src_path: String,
            #[serde(default = "default_config_empty")]
        pub url_path: String,
            #[serde(default = "default_config_empty")]
        pub not_found: String,
            #[serde(default = "default_config_empty")]
        pub not_auth: String,
            #[serde(default = "default_is_restricted")]
        pub is_restricted: bool,
            #[serde(default = "default_config_empty")]
        pub redirect_to: String,
    }
    /// Config collects config values.
    #[derive(Debug, Clone, Serialize, Deserialize,Default)]
    pub struct Config {
        pub hostport: String,
        pub bind: String,
        pub port: u16,
        pub protocol: String,
            #[serde(default = "default_config_org")]
        pub org: String,
        pub name: String,
        pub verbose: u8,
        pub prefix: String,
        pub resources_path: String,
        pub cert_file: String,
        pub key_file: String,
        //pub certs_store_path: String,
        //pub cert_file_sufix: String,
            #[serde(default = "default_config_array_resource")]
        pub allow_origin: Vec<String>,
            #[serde(default = "default_config_array_resource")]
        pub langs: Vec<String>,
            #[serde(default = "default_config_dflt_lang")]
        pub dflt_lang: String,
            #[serde(default = "default_config_empty")]
        pub path_locales_config: String,
            #[serde(default = "default_config_locales")]
        pub locales: HashMap<String,Local>,

        // Some paths
            #[serde(default = "default_config_resource")]
        pub root_path: String,
            #[serde(default = "default_config_resource")]
        pub defaults_path: String,
            #[serde(default = "default_config_serv_paths")]
        pub serv_paths: Vec<ServPath>,
            #[serde(default = "default_config_resource")]
        pub docs_index: String,

            #[serde(default = "default_config_resource")]
        pub templates_path: String,
            #[serde(default = "default_config_resource")]
        pub html_url: String,
            #[serde(default = "default_config_resource")]
        pub assets_url: String,

            #[serde(default = "default_config_resource")]
        pub users_store_uri: String,
            #[serde(default = "default_config_empty")]
        pub user_store_access: String,

            #[serde(default = "default_config_empty")]
        pub signup_mode: String,
            #[serde(default = "default_config_invite_expire")]
        pub invite_expire: u64,
            #[serde(default = "default_config_use_random")]
        pub use_random: bool,
            #[serde(default = "default_config_totp_digits")]
        pub totp_digits: usize,
            #[serde(default = "default_config_totp_mode", deserialize_with = "deserialize_totp_mode")]
        pub totp_mode: TotpMode,
            #[serde(default = "default_config_totp_algorithm", deserialize_with = "deserialize_totp_algorithm")]
        pub totp_algorithm: TotpAlgorithm,

            #[serde(default = "default_config_password_score")]
        pub password_score: u8,
            #[serde(default = "default_config_empty")]
        pub admin_fields: String,
            #[serde(default = "default_config_empty")]
        pub mail_from: String,
            #[serde(default = "default_config_empty")]
        pub mail_reply_to: String,

            #[serde(default = "default_config_use_mail")]
        pub use_mail: bool,
            #[serde(default = "default_config_empty")]
        pub smtp: String,
            #[serde(default = "default_config_empty")]
        pub smtp_auth: String,

        #[cfg(feature = "authstore")]
            #[serde(default = "default_config_resource")]
        pub authz_store_uri: String,
        #[cfg(feature = "casbin")]
            #[serde(default = "default_config_empty")]
        pub authz_model_path: String,
        #[cfg(feature = "casbin")]
            #[serde(default = "default_config_empty")]
        pub authz_policy_path: String,
            #[serde(default = "default_config_empty")]

        pub session_store_uri: String,
            #[serde(default = "default_config_empty")]
        pub session_store_file: String,
        pub session_expire: u64,

        pub paseto: ConfigPaSeToken,

        pub ui: UiConfig,

            #[serde(default = "default_config_tpls")]
        pub tpls: HashMap<String,String>,
    }

    impl Config {
        fn fix_root_path<Config>(&mut self, root_path:  String ) {
            if root_path != self.root_path {
                self.root_path = root_path.to_owned();
            }
            if self.root_path.is_empty() || ! Path::new(&self.root_path).exists() {
                return;
            }
            if self.users_store_uri.starts_with(FILE_SCHEME) {
                self.users_store_uri = format!("{}{}",
                    FILE_SCHEME, self.fix_item_path(self.users_store_uri.replace(FILE_SCHEME,"")));
            }
            if self.session_store_uri.starts_with(FILE_SCHEME) {
                self.session_store_uri = format!("{}{}",
                    FILE_SCHEME, self.fix_item_path(self.session_store_uri.replace(FILE_SCHEME,"")));
            }
            self.cert_file = self.fix_item_path(self.cert_file.to_owned());
            self.key_file = self.fix_item_path(self.key_file.to_owned());
            self.templates_path = self.fix_item_path(self.templates_path.to_owned());
            self.defaults_path = self.fix_item_path(self.defaults_path.to_owned());
            self.paseto.public_path = self.fix_item_path(self.paseto.public_path.to_owned());
            self.paseto.secret_path = self.fix_item_path(self.paseto.secret_path.to_owned());
            #[cfg(feature = "authstore")]
            if self.authz_store_uri.starts_with(FILE_SCHEME) {
                self.authz_store_uri = format!("{}{}",
                    FILE_SCHEME, self.fix_item_path(self.authz_store_uri.replace(FILE_SCHEME,"")));
            }
            #[cfg(feature = "casbin")]
            {
                self.authz_model_path = self.fix_item_path(self.authz_model_path.to_owned());
                self.authz_policy_path = self.fix_item_path(self.authz_policy_path.to_owned());
            }
            // Loading paseto
            (self.paseto.public_data, self.paseto.secret_data) = self.paseto.load_data();
            self.paseto.footer = ConfigPaSeToken::make_footer(
                self.paseto.map_footer.to_owned()
            ).unwrap_or(Footer::new());
        }
        fn fix_item_path(&mut self, item: String ) -> String {
            if !item.is_empty() && ! Path::new(&item).exists() {
                format!("{}/{}",&self.root_path,&item)
            } else {
                item
            }
        }
        pub fn load_items(&mut self ) {
            self.fix_root_path::<Config>(self.root_path.to_owned());
        }
        #[allow(dead_code)]
        pub fn to_json(&self) -> String {
            serde_json::to_string(self).unwrap_or_else(|e|{
                println!("Error to convert Config to json: {}",e);
                String::from("")
            })
        }
        // #[allow(dead_code)]
        // pub fn st_html_path(&self) -> &'static str  {
        //     Box::leak(self.html_path.to_owned().into_boxed_str())
        // }
        #[allow(dead_code)]
        pub fn full_html_url(&self, url: &str) -> String {
            format!("{}://{}:{}/{}",
                &self.protocol,&self.bind,&self.port,
                url
            )
        }
        pub fn load_from_file<'a>(file_cfg: &str, name: &str) -> Result<Self> {
            let item_cfg: Self;
            let file_path: String;
            if file_cfg.contains(CFG_FILE_EXTENSION) {
                file_path = file_cfg.to_string();
            } else {
                file_path = format!("{}{}",file_cfg.to_string(),CFG_FILE_EXTENSION);
            }
            let config_content:  &'a str;
            match std::fs::read_to_string(&file_path) {
                Ok(cfgcontent) => config_content = Box::leak(cfgcontent.into_boxed_str()),
                Err(e) =>
                    return Err(Error::new(
                        ErrorKind::InvalidInput,
                        format!("Error read {}: {}",&file_path,e)
                    )),
            };
            // match toml::from_str::<T>(&config_content) {
            match toml::from_str::<Self>(&config_content) {
                Ok(cfg) => item_cfg = cfg,
                Err(e) => return Err(Error::new(
                    ErrorKind::InvalidInput,
                    format!("Error loading config {}: {}",&file_path,e)
                )),
            };
            log::info!("Loaded {} config from: {}", &name, &file_path);
            Ok(item_cfg)
        }

    }