feat: ✨ one time password

feat: ✨ json web token
feat: ✨ mail template

src/lib.rs

@@ -6,9 +6,17 @@ pub mod routing;
 pub mod server;
 pub mod utils;
 
+use std::sync::LazyLock;
+
+use feature::auth::OneTimePassword;
 use sqlx::{Pool, Postgres};
+use tokio::sync::RwLock;
 use utils::naive_toml_parser;
 
+pub static SERVER_CONFIG: LazyLock<ServerConfig> = LazyLock::new(ServerConfig::default);
+pub static ONE_TIME_PASSWORDS: LazyLock<RwLock<Vec<OneTimePassword>>> =
+    LazyLock::new(OneTimePassword::init);
+
 const DATABASE_CONFIG_FILE_LOCATION: &str = "./configs/database_config.toml";
 const SERVER_CONFIG_FILE_LOCATION: &str = "./configs/server_config.toml";
 
@@ -43,15 +51,22 @@ impl Default for DatabaseConfig {
 #[derive(Debug)]
 pub struct ServerConfig {
     pub address: String,
+    pub otp_time_limit: usize,
+    pub login_token_time_limit: usize,
+    pub concurrency_limit: usize,
 }
 
 impl Default for ServerConfig {
     fn default() -> Self {
         let (header, mut server_configs) = naive_toml_parser(SERVER_CONFIG_FILE_LOCATION);
+        let value_or_max = |value: String| value.parse().map_or(usize::MAX, |value| value);
 
         if header == "[server_config]" {
             Self {
                 address: server_configs.pop_front().unwrap().parse().unwrap(),
+                otp_time_limit: value_or_max(server_configs.pop_front().unwrap()),
+                login_token_time_limit: value_or_max(server_configs.pop_front().unwrap()),
+                concurrency_limit: value_or_max(server_configs.pop_front().unwrap()),
             }
         } else {
             panic!("Server Config File Must Include [server_config] at the First Line")