package com.simon.springbootshirodemo.configure;

import com.simon.springbootshirodemo.pojo.User;
import com.simon.springbootshirodemo.service.UserService;
import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.*;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.session.Session;
import org.apache.shiro.subject.PrincipalCollection;
import org.apache.shiro.subject.Subject;
import org.springframework.beans.factory.annotation.Autowired;

/**
 * @author Simon
 */
public class UserRealm extends AuthorizingRealm {
    @Autowired
    UserService userService;

    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
        System.out.println("执行了=>授权doGetAuthorizationInfo");
        SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
        Subject subject = SecurityUtils.getSubject();
        User currentUser = (User) subject.getPrincipal();
        info.addStringPermission(currentUser.getPerms());
        return info;
    }

    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
        System.out.println("执行了=>认证doGetAuthenticationInfo");
        UsernamePasswordToken userToken = (UsernamePasswordToken) token;
        User user = userService.queryUserByName(userToken.getUsername());
        if (user == null) {
            return null;
        }
        Subject currentSubject = SecurityUtils.getSubject();
        Session session = currentSubject.getSession();
        session.setAttribute("loginUser", user);
        return new SimpleAuthenticationInfo(user, user.getPwd(), "");
    }
}