com.neology.google.AuthorizeGoogleUser.java Source code

Introduction

Here is the source code for com.neology.google.AuthorizeGoogleUser.java

Source

/*
 * Copyright (C) 2017 zsel
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.neology.google;

import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.extensions.java6.auth.oauth2.AuthorizationCodeInstalledApp;
import com.google.api.client.extensions.jetty.auth.oauth2.LocalServerReceiver;
import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeFlow;
import com.google.api.client.googleapis.auth.oauth2.GoogleClientSecrets;
import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.client.util.store.FileDataStoreFactory;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.List;
import com.google.api.services.oauth2.Oauth2;
import com.neology.environment.Local;
import com.neology.environment.LocalEnvironment;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.net.URL;
import javax.imageio.ImageIO;

/**
 *
 * @author obsidiam
 */
public class AuthorizeGoogleUser {
    private static final String APPLICATION_NAME = "obsidiam-Amelia Server/2.2";

    private static final java.io.File DATA_STORE_DIR = new java.io.File(System.getProperty("user.home"),
            ".store/amelia-server");

    private static FileDataStoreFactory dataStoreFactory;

    private static HttpTransport httpTransport;

    private static final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();

    private static final List<String> SCOPES = Arrays.asList("https://www.googleapis.com/auth/userinfo.profile",
            "https://www.googleapis.com/auth/userinfo.email");

    private static Oauth2 oauth2;
    private static GoogleClientSecrets clientSecrets;
    private static String name = "";

    public static void doLogin(String user) {
        try {
            httpTransport = GoogleNetHttpTransport.newTrustedTransport();
            dataStoreFactory = new FileDataStoreFactory(DATA_STORE_DIR);
            Credential credential = authorize(user);
            oauth2 = new Oauth2.Builder(httpTransport, JSON_FACTORY, credential)
                    .setApplicationName(APPLICATION_NAME).build();
            String picture = oauth2.userinfo().get().execute().getPicture();
            //name = oauth2.userinfo().get().execute().getName();
            downloadProfileImage(picture, user.toLowerCase());

        } catch (IOException e) {
            System.err.println(e.getMessage());
        } catch (Exception t) {

        }
    }

    private static Credential authorize(String user) throws Exception {
        clientSecrets = GoogleClientSecrets.load(JSON_FACTORY, new InputStreamReader(
                AuthorizeGoogleUser.class.getResourceAsStream("/amelia-server/client_id.json")));
        if (clientSecrets.getDetails().getClientId().startsWith("Enter")
                || clientSecrets.getDetails().getClientSecret().startsWith("Enter ")) {
            System.out.println("Enter Client ID and Secret from https://code.google.com/apis/console/ "
                    + "into oauth2-cmdline-sample/src/main/resources/client_secrets.json");
        }

        GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(httpTransport, JSON_FACTORY,
                clientSecrets, SCOPES).setDataStoreFactory(dataStoreFactory).build();
        return new AuthorizationCodeInstalledApp(flow, new LocalServerReceiver()).authorize(user);
    }

    private static void downloadProfileImage(String picture, String name) {
        Image image = null;
        try {
            URL url = new URL(picture);
            image = ImageIO.read(url);
            BufferedImage bimg = toBufferedImage(image);
            ImageIO.write(bimg, "PNG",
                    new File(LocalEnvironment.getLocalVar(Local.TMP) + File.separator + name + ".png"));
        } catch (IOException e) {
            System.err.println(e);
        }

    }

    private static BufferedImage toBufferedImage(Image img) {
        if (img instanceof BufferedImage) {
            return (BufferedImage) img;
        }

        BufferedImage bimage = new BufferedImage(img.getWidth(null), img.getHeight(null),
                BufferedImage.SCALE_SMOOTH);

        Graphics2D bGr = bimage.createGraphics();
        bGr.drawImage(img, 0, 0, null);
        bGr.dispose();
        return bimage;
    }

    public static String getName() {
        return name;
    }
}