Add files via upload

src/main/java/stirling/software/SPDF/config/security/CustomUserDetailsService.java

@@ -0,0 +1,45 @@
+package stirling.software.SPDF.config.security;
+
+import java.util.Collection;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.security.core.GrantedAuthority;
+import org.springframework.security.core.authority.SimpleGrantedAuthority;
+import org.springframework.security.core.userdetails.UserDetails;
+import org.springframework.security.core.userdetails.UserDetailsService;
+import org.springframework.security.core.userdetails.UsernameNotFoundException;
+import org.springframework.stereotype.Service;
+
+import stirling.software.SPDF.model.Authority;
+import stirling.software.SPDF.model.User;
+import stirling.software.SPDF.repository.UserRepository;
+
+@Service
+public class CustomUserDetailsService implements UserDetailsService {
+
+    @Autowired
+    private UserRepository userRepository;
+
+    @Override
+    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
+        User user = userRepository.findByUsername(username)
+            .orElseThrow(() -> new UsernameNotFoundException("No user found with username: " + username));
+
+        return new org.springframework.security.core.userdetails.User(
+            user.getUsername(),
+            user.getPassword(),
+            user.isEnabled(),
+            true, true, true,
+            getAuthorities(user.getAuthorities())
+        );
+    }
+
+    private Collection<? extends GrantedAuthority> getAuthorities(Set<Authority> authorities) {
+        return authorities.stream()
+            .map(authority -> new SimpleGrantedAuthority(authority.getAuthority()))
+            .collect(Collectors.toList());
+    }
+}