Implement database, daos and other classes

src/main/java/dev/service/AuthService.java

@@ -1,21 +1,40 @@
 package dev.service;
 
+import dev.dao.UserDao;
 import dev.model.User;
 
+import java.util.Objects;
+
 public class AuthService {
 
+    private final UserDao userDao = new UserDao();
+
     public boolean register(String username, String password, String email) {
 
-        // TODO:
-        // Validate and register user
+        User user = new User(
+                username,
+                String.valueOf(password.hashCode()),
+                email
+        );
+
+        if(userDao.save(user)){
+            System.out.println("Registered successfully");
+            return true;
+        }
 
         return false;
+
     }
 
     public User login(String username, String password) {
 
-        // TODO:
-        // Authenticate user
+        User userDB = userDao.findByUsername(username);
+
+        if(userDB == null) return null;
+
+        String userPasswordDB = userDB.getPassword();
+        if( Objects.equals( userPasswordDB, String.valueOf(password.hashCode()) ) )
+            return userDB;
 
         return null;
     }