Add: basic backend functionality

backend/src/main/java/es/adeptusminiaturium/backend/security/CustomUserDetails.java

@@ -0,0 +1,40 @@
+package es.adeptusminiaturium.backend.security;
+
+import es.adeptusminiaturium.backend.enums.UserStatus;
+import es.adeptusminiaturium.backend.model.User;
+import es.adeptusminiaturium.backend.enums.UserRole;
+import org.springframework.security.core.GrantedAuthority;
+import org.springframework.security.core.authority.SimpleGrantedAuthority;
+import org.springframework.security.core.userdetails.UserDetails;
+
+import java.util.Collection;
+import java.util.List;
+
+public class CustomUserDetails implements UserDetails {
+
+    private final User user;
+
+    public CustomUserDetails(User user) {
+        this.user = user;
+    }
+
+    @Override
+    public Collection<? extends GrantedAuthority> getAuthorities() {
+        return List.of(new SimpleGrantedAuthority("ROLE_" + user.getRole().name()));
+    }
+
+    @Override
+    public String getPassword() {
+        return user.getPassword();
+    }
+
+    @Override
+    public String getUsername() {
+        return user.getUserName();
+    }
+
+    @Override
+    public boolean isEnabled() {
+        return user.getStatus().equals(UserStatus.ACTIVE);
+    }
+}