package com.fanruan.api.decision.login;

import com.fr.decision.authorize.Passport;
import com.fr.decision.authorize.impl.HttpPassport;
import com.fr.decision.config.FSConfig;
import com.fr.decision.webservice.v10.login.LoginService;
import org.jetbrains.annotations.Nullable;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @author richie
 * @version 10.0
 * Created by richie on 2019-08-16
 */
public class LoginKit {

    /**
     * 获取决策平台设置的认证类型
     *
     * @return 认证对象
     */
    public static Passport getCurrentPassport() {
        return FSConfig.getInstance().getPassport();
    }

    /**
     * 获取指定类型的通行证，如果不存在，就返回null
     *
     * @param type 通行证类型
     * @param <T>  类型
     * @return 通行证
     */
    public static <T> T getPassport(Class<? extends T> type) {
        return FSConfig.getInstance().getPassport(type);
    }

    /**
     * 获取http认证的地址
     *
     * @return http认证地址
     */
    public static @Nullable String getHttpPassportUrl() {
        Passport passport = getCurrentPassport();
        if (passport instanceof HttpPassport) {
            return ((HttpPassport) passport).getUrl();
        }
        return null;
    }

    /**
     * 获取http认证的秘钥
     *
     * @return http认证地址
     */
    public static @Nullable String getHttpPassportKey() {
        Passport passport = getCurrentPassport();
        if (passport instanceof HttpPassport) {
            return ((HttpPassport) passport).getPublicKey();
        }
        return null;
    }

    /**
     * 登录
     *
     * @param req          http请求
     * @param res          http响应
     * @param loginRequest 登录请求信息
     * @return 登录响应信息
     * @throws Exception 登录过程中发生错误，则抛出此异常
     */
    public static OpenLoginResponse login(HttpServletRequest req, HttpServletResponse res, OpenLoginRequest loginRequest) throws Exception {
        return OpenLoginResponse.wrap(LoginService.getInstance().login(req, res, loginRequest.select()));
    }
}