src/main/java/com/rods/backtestingstrategies/security/CustomUserDetailsService.java

package com.rods.backtestingstrategies.security;

import com.rods.backtestingstrategies.entity.User;
import com.rods.backtestingstrategies.repository.UserRepository;
import lombok.RequiredArgsConstructor;
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 java.util.ArrayList;

@Service
@RequiredArgsConstructor
public class CustomUserDetailsService implements UserDetailsService {

    private final UserRepository userRepository;

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        User user = userRepository.findByUsername(username)
                .orElseThrow(() -> new UsernameNotFoundException("User not found with username: " + username));

        return new org.springframework.security.core.userdetails.User(
                user.getUsername(),
                user.getPassword(),
                new ArrayList<>() // Authorities/Roles can be added here
        );
    }
}