package com.moral.service.impl;

import com.moral.entity.auth.AuthRole;
import com.moral.entity.auth.AuthUser;
import com.moral.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
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 java.util.Collection;
import java.util.HashSet;
import java.util.Iterator;

@Service
public class AuthUserServiceImpl implements UserDetailsService {

    @Autowired
    private UserService userService;

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        AuthUser user = userService.findByUsername(username);

        if(user == null){
            throw new UsernameNotFoundException("用户名："+ username + "不存在！");
        }
        Collection<SimpleGrantedAuthority> collection = new HashSet<SimpleGrantedAuthority>();
        Iterator<AuthRole> iterator =  user.getList().iterator();
        while (iterator.hasNext()){
            collection.add(new SimpleGrantedAuthority(iterator.next().getRole_name()));
        }

        return new org.springframework.security.core.userdetails.User(username, user.getPassword(), collection);
    }
}