package com.landtool.lanbase.common.shiro;

import java.util.Set;

import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.ExpiredCredentialsException;
import org.apache.shiro.authc.LockedAccountException;
import org.apache.shiro.authc.SimpleAuthenticationInfo;
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.stereotype.Component;

import com.landtool.lanbase.common.Constant;
import com.landtool.lanbase.modules.org.entity.OrgUser;
import com.landtool.lanbase.modules.org.service.OrgUserService;
import com.landtool.lanbase.modules.sys.entity.SysUserToken;
import com.landtool.lanbase.modules.sys.service.SysUserTokenService;

/**
 * @author lanbase
 * @Description: TODO(认证)
 * @date 2017-6-23 15:07
 */
@Component
public class ShiroRealm extends AuthorizingRealm {

    @Autowired
    private OrgUserService orgUserService;

    @Autowired
    private SysUserTokenService sysUserTokenService;

    @Override
    public boolean supports(AuthenticationToken token) {
        return token instanceof ShiroToken;
    }

    /**
     * 授权
     */
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
        OrgUser user = (OrgUser)principals.getPrimaryPrincipal();
        Long userId = user.getUserid();

        //用户权限列表
        Set<String> permsSet = orgUserService.getUserPermissions(userId);

        SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
        info.setStringPermissions(permsSet);
        return info;
    }

    /**
     * 认证
     */
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
		ShiroToken accessToken = (ShiroToken) token;
		OrgUser user;
		if (!accessToken.IsCasToken()) {
			// 根据accessToken，查询用户信息
			SysUserToken tokenEntity = sysUserTokenService.queryByToken(accessToken.getPrincipal());
			// token失效
			if (tokenEntity == null || tokenEntity.getExpireTime().getTime() < System.currentTimeMillis()) {
				throw new ExpiredCredentialsException("token失效，请重新登录");
			} 
			user = orgUserService.queryObject(tokenEntity.getUserId());
		}
		else
		{
			//用户信息
			user = orgUserService.queryByUserName(accessToken.getPrincipal());			
		} 
        //账号锁定
        if(Constant.UserStatus.DISABLE.getValue()==user.getUserstatus()){
            throw new LockedAccountException("账号已被锁定,请联系管理员");
        }

        SimpleAuthenticationInfo info = new SimpleAuthenticationInfo(user, token.getPrincipal(), getName());
        return info;
    }
}