hu.vitamas.enotesz.util.Auth.java Source code

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Here is the source code for hu.vitamas.enotesz.util.Auth.java

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/*
 * Copyright (C) 2017 Vincze Tamas Zoltan (www.vitamas.hu)
 *
 * 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 hu.vitamas.enotesz.util;

import java.util.HashMap;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.google.gson.FieldNamingPolicy;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;

import hu.vitamas.enotesz.dao.UsersDao;
import hu.vitamas.enotesz.json.AuthResponse;
import hu.vitamas.enotesz.model.Users;

/**
 * Authentication/session handler class.
 *
 * @author vitozy
 */
public class Auth {

    static Logger logger = LoggerFactory.getLogger(Auth.class);

    private static Integer userID = 0;
    private static boolean loggedIn = false;

    /**
     * Returns with the logged in user's id.
     * 
     * @return the logged in user's id
     */
    public static Integer getUserID() {
        return userID;
    }

    /**
     * Returns with the logged in user instance.
     * 
     * @return logged in user instance
     */
    public static Users getUser() {
        UsersDao udao = new UsersDao();
        return udao.findById(Auth.getUserID(), Users.class);
    }

    /**
     * Sets the logged in user's id.
     * 
     * @param userID user id of current session
     */
    public static void setUserID(Integer userID) {
        Auth.userID = userID;
    }

    /**
     * Gets the status of logged in.
     * 
     * @return logged in status
     */
    public static boolean isLoggedIn() {
        return loggedIn;
    }

    /**
     * Sets the status of logged in.
     * 
     * @param loggedIn status of logged in
     */
    public static void setLoggedIn(boolean loggedIn) {
        Auth.loggedIn = loggedIn;
    }

    /**
     * Checks the user is logged in or not.
     * 
     * <p>This method communicate with the eNotesz server.
     * <p><b>Must to send API request because of encryption.</b>
     * 
     * @param name name of user
     * @param password password of user
     * @return AuthResponse
     */
    public static AuthResponse check(String name, String password) {
        String apiKey = Core.getApiKey();
        String apiLink = Core.getApiBaseUrl();

        if (apiKey == null || apiLink == null)
            return null;

        HashMap<String, String> params = MapBuilder.<String, String>newHashMap().set("pass", password)
                .set("name", name).set("apiKey", apiKey).build();

        try {
            String response = Core.createApi().setMethod("POST").setUrl(apiLink + "user/checkUser")
                    .setParams(params).sendRequest();
            if (response == null)
                return null;
            Gson gson = new GsonBuilder().setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES)
                    .create();
            return gson.fromJson(response, AuthResponse.class);
        } catch (Exception e) {
            logger.error("api or gson error", e);
        }

        return null;
    }

}