Merge pull request #4 from Xila-Project/Feature/Users

A beginning

src/Users/Manager.rs

@@ -0,0 +1,30 @@
+use super::*;
+use std::{
+    collections::HashMap,
+    sync::{Arc, RwLock},
+};
+
+struct Internal_user_type {
+    pub Name: String,
+}
+
+pub struct Manager_type {
+    Users: Arc<RwLock<HashMap<Identifier_type, Internal_user_type>>>,
+}
+
+impl Manager_type {
+    pub fn New() -> Self {
+        Self {
+            Users: Arc::new(RwLock::new(HashMap::new())),
+        }
+    }
+
+    pub fn Get_user_name(&self, Identifier: Identifier_type) -> Option<String> {
+        let Users = self.Users.read().unwrap();
+        Some(Users.get(&Identifier).unwrap().Name.clone())
+    }
+
+    pub fn Check_credentials(&self, User_name: &str, Password: &str) -> bool {
+        true
+    }
+}

src/Users/User.rs

@@ -0,0 +1,19 @@
+use super::*;
+
+pub struct User_type<'a> {
+    User_manager: &'a Manager_type,
+    Identifier: Identifier_type,
+}
+
+impl<'a> User_type<'a> {
+    pub fn New(User_manager: &'a Manager_type, Identifier: Identifier_type) -> Self {
+        User_type {
+            User_manager,
+            Identifier,
+        }
+    }
+
+    pub fn Get_name(&self) -> String {
+        self.User_manager.Get_user_name(self.Identifier).unwrap()
+    }
+}

src/Users/mod.rs

@@ -0,0 +1,7 @@
+type Identifier_type = u8;
+
+mod Manager;
+pub use Manager::*;
+
+mod User;
+pub use User::*;

src/main.rs

@@ -15,6 +15,7 @@ use esp_idf_sys as _; // If using the `binstart` feature of `esp-idf-sys`, alway
 mod Graphics;
 mod Screen;
 mod File_system;
+mod Users;
 
 fn main() {
     // It is necessary to call this function once. Otherwise some patches to the runtime