package com.informatica.cep.design.custom.application.security.web;

import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.BadCredentialsException;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;

import com.informatica.cep.design.application.security.repo.DTUserRepo;

public class PAUserDetailsServiceImpl implements UserDetailsService {
	
	private Logger logger  = Logger.getLogger(PAUserDetailsServiceImpl.class);
	
	@Autowired
	private DTUserRepo userRepo;

	@Override
	public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
		UserDetails ud = userRepo.findLocalUserByUserNameForAuthentication(normalize(username));
		if(ud == null)
			throw new BadCredentialsException("Username :"+username+" not found in Rulepoint");
		return ud;
	}
	
	//this can be used in the main code as well that way we will not require this special class just for this
	 private String normalize(String arg)
	    {
	        logger.debug((new StringBuilder()).append("normalize in ").append(arg).toString());
	        if(arg.indexOf('=') != -1)
	            arg = arg.substring(arg.indexOf('=') + 1);
	        logger.debug((new StringBuilder()).append("normalize out ").append(arg).toString());
	        return arg;
	    }


}