/*
 * Copyright 1998-2016 Linux.org.ru
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */

package ru.org.linux.auth;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.web.bind.annotation.*;
import ru.org.linux.site.PublicApi;
import ru.org.linux.site.Template;
import ru.org.linux.user.User;
import ru.org.linux.user.UserService;

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

@RestController
public class KingdomOfLorController {

    private PasswordEncoder passwordEncoder = new PasswordEncoderImpl();

    @Autowired
    private UserService userService;

    @RequestMapping(value="/api/get-kol-token",method = RequestMethod.GET)
    public String onGetAccessToken(HttpServletRequest request,HttpServletResponse response) throws Exception{
        Template tmpl = Template.getTemplate(request);

        if (!tmpl.isSessionAuthorized()) {
            throw new AccessViolationException("not authorized");
        }

        response.setHeader("Cache-control", "no-cache");

        User user = tmpl.getCurrentUser();

        String secret = getUserSecret(user);


        return passwordEncoder.encode(secret);
    }

    @RequestMapping(value = "/api/check-kol-token",method = RequestMethod.GET)
    @PublicApi
    public String onCheckKolToken(@RequestParam String login,@RequestParam String token) throws Exception{
        User user = userService.getUser(login);

        String secret = getUserSecret(user);

        if(passwordEncoder.matches(secret,token)){
            return "ok";
        }else{
            throw new AccessViolationException("bad token");
        }
    }

    private String getUserSecret(User user){
        return String.valueOf(user.getScore())+"_"+user.getPassword();
    }
}