/**
 * Copyright (c) 2018 人人开源 All rights reserved.
 *
 * https://www.renren.io
 *
 * 版权所有，侵权必究！
 */

package com.zt.core.shiro;

import com.alibaba.fastjson.JSONObject;
import com.zt.common.exception.ErrorCode;
import com.zt.common.utils.MessageUtils;
import com.zt.core.context.User;
import com.zt.modules.sys.enums.UserStatus;
import com.zt.security.model.SysUserToken;
import com.zt.security.service.ShiroService;
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.subject.PrincipalCollection;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Lazy;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;

import java.util.Date;
import java.util.List;

/**
 * 认证
 *
 * @author Mark sunlightcs@gmail.com
 */
@Component
public class Oauth2Realm extends AuthorizingRealm {

    @Lazy
    @Autowired
    private ShiroService shiroService;
    @Autowired
    private RedisTemplate redisTemplate;

    @Value("${spring.cache.type}")
    private String type;
    @Value("${data.tokenTimeout}")
    private Long tokenTimeout;

    @Override
    public boolean supports(AuthenticationToken token) {
        return token instanceof Oauth2Token;
    }
    /**
     * 授权(验证权限时调用)
     */
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
        User user = (User) principals.getPrimaryPrincipal();

        // 用户权限列表
        SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
        info.setStringPermissions(user.getPermissions());
        return info;
    }

    /**
     * 认证(登录时调用)
     */
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
        String accessToken = (String) token.getPrincipal();

        // 根据accessToken，查询用户信息
        SysUserToken tokenEntity;
        if (!"redis".equals(type)){
            tokenEntity = shiroService.getByToken(accessToken);
        }
        else{
            String json = (String)redisTemplate.opsForValue().get(accessToken);
            tokenEntity = JSONObject.parseObject(json, SysUserToken.class);
            //User user = tokenEntity.getUser();
            //List<Long> roleIdList = user.getRoleIdList();
        }
        // token失效
        if (tokenEntity == null || tokenEntity.getExpireDate().getTime() < System.currentTimeMillis()) {
            throw new IncorrectCredentialsException(MessageUtils.getMessage(ErrorCode.TOKEN_INVALID.getCode()));
        }

        // 当前时间
        Date now = new Date();
        // 过期时间
        Date expireTime = new Date(now.getTime() + tokenTimeout * 60 * 1000);
        tokenEntity.setUpdateDate(now);
        tokenEntity.setExpireDate(expireTime);
        if ("redis".equals(type)) {
            String jsonString = JSONObject.toJSONString(tokenEntity);
            redisTemplate.opsForValue().set(token, jsonString);
        }else{
            this.shiroService.updateTokenById(tokenEntity);
        }

        // 查询用户信息
        User user = shiroService.getUser(tokenEntity.getUserId());
        user.setSystemMarker(tokenEntity.getSystemMarker());
        user.setRoleName(tokenEntity.getRoleName());

        // 账号锁定
        if (user.getStatus() == UserStatus.DISABLE.getValue()) {
            throw new LockedAccountException(MessageUtils.getMessage(ErrorCode.ACCOUNT_LOCK.getCode()));
        }

        SimpleAuthenticationInfo info = new SimpleAuthenticationInfo(user, accessToken, getName());
        return info;
    }

}