package cn.mb.cloud.auth.security.util;


import cn.mb.cloud.auth.security.component.MbCloudAuthUser;
import lombok.experimental.UtilityClass;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.oauth2.provider.OAuth2Authentication;

/**
 * 安全工具类
 *
 * @author L.cm
 */
@UtilityClass
public class  SecurityUtils {
    /**
     * 获取Authentication
     */
    public Authentication getAuthentication() {
        return SecurityContextHolder.getContext().getAuthentication();
    }

    /**
     * 获取用户
     *
     * @param authentication
     * @return MbCloudAuthUser
     * <p>
     * 获取当前用户的全部信息  true
     * 获取当前用户的用户名  false
     */
    public MbCloudAuthUser getUser(Authentication authentication) {
        Object principal = authentication.getPrincipal();
        if (principal instanceof MbCloudAuthUser) {
            return (MbCloudAuthUser) principal;
        }
        return null;
    }

    /**
     * 获取当前用名
     *
     * @return String
     */
    public String getUsername() {
        Object principal = getAuthentication().getPrincipal();
        if (principal instanceof String) {
            return principal.toString();
        }
        return null;
    }


    public String getClientId() {
        Authentication authentication = getAuthentication();
        if (authentication instanceof OAuth2Authentication) {
            OAuth2Authentication auth2Authentication = (OAuth2Authentication) authentication;
            return auth2Authentication.getOAuth2Request().getClientId();
        }
        return null;
    }

    /**
     * 获取用户
     */
    public MbCloudAuthUser getUser() {
        Authentication authentication = getAuthentication();
        if (authentication == null) {
            return null;
        }
        return getUser(authentication);
    }


}