com.mkyong.controller.Utils.java Source code

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Here is the source code for com.mkyong.controller.Utils.java

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/*
 * Copyright (c) 2013 Google Inc.
 *
 * 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 com.mkyong.controller;

import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Collections;
import java.util.Set;

import javax.servlet.http.HttpServletRequest;

import com.google.api.client.extensions.appengine.datastore.AppEngineDataStoreFactory;
import com.google.api.client.extensions.appengine.http.UrlFetchTransport;
import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeFlow;
import com.google.api.client.googleapis.auth.oauth2.GoogleClientSecrets;
import com.google.api.client.http.GenericUrl;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.client.util.Preconditions;
import com.google.api.services.calendar.CalendarScopes;
import com.google.api.services.plus.PlusScopes;
import com.google.appengine.api.users.User;
import com.google.appengine.api.users.UserService;
import com.google.appengine.api.users.UserServiceFactory;

class Utils {

    private static GoogleClientSecrets clientSecrets = null;
    private static GoogleClientSecrets clientSecrets_cal = null;
    private static final Set<String> SCOPES = Collections.singleton(PlusScopes.PLUS_ME);
    //prafull
    private static final Set<String> SCOPES_CALENDAR = Collections.singleton(CalendarScopes.CALENDAR);
    public static final UrlFetchTransport HTTP_TRANSPORT = new UrlFetchTransport();
    public static final JacksonFactory JSON_FACTORY = new JacksonFactory();
    public static final UrlFetchTransport HTTP_TRANSPORT_CAL = new UrlFetchTransport();
    public static final AppEngineDataStoreFactory DATA_STORE_FACTORY = AppEngineDataStoreFactory
            .getDefaultInstance();

    public static final AppEngineDataStoreFactory DATA_STORE_FACTORYCAL = AppEngineDataStoreFactory
            .getDefaultInstance();

    public static final JacksonFactory JSON_FACTORY_CAL = new JacksonFactory();
    public static final String MAIN_SERVLET_PATH = "/counterwebapp/plussample";
    public static final String AUTH_CALLBACK_SERVLET_PATH = "/counterwebapp/oauth2callback";

    private static GoogleClientSecrets getClientSecrets() throws IOException {
        if (clientSecrets == null) {
            clientSecrets = GoogleClientSecrets.load(JSON_FACTORY,
                    new InputStreamReader(Utils.class.getResourceAsStream("/client_secrets.json")));
            Preconditions.checkArgument(
                    !clientSecrets.getDetails().getClientId().startsWith("Enter ")
                            && !clientSecrets.getDetails().getClientSecret().startsWith("Enter "),
                    "Download client_secrets.json file from https://code.google.com/apis/console/?api=plus "
                            + "into plus-preview-appengine-sample/src/main/resources/client_secrets.json");
        }
        return clientSecrets;
    }

    private static GoogleClientSecrets getClientSecrets_cal() throws IOException {
        if (clientSecrets_cal == null) {
            clientSecrets_cal = GoogleClientSecrets.load(JSON_FACTORY_CAL,
                    new InputStreamReader(Utils.class.getResourceAsStream("/client_secrets.json")));
            Preconditions.checkArgument(
                    !clientSecrets_cal.getDetails().getClientId().startsWith("Enter ")
                            && !clientSecrets_cal.getDetails().getClientSecret().startsWith("Enter "),
                    "Download client_secrets.json file from https://code.google.com/apis/console/?api=plus "
                            + "into plus-preview-appengine-sample/src/main/resources/client_secrets.json");
        }
        return clientSecrets_cal;
    }

    /*
    static GoogleAuthorizationCodeFlow initializeFlow() throws IOException { return new GoogleAuthorizationCodeFlow.Builder(
    HTTP_TRANSPORT, JSON_FACTORY, getClientSecrets(), SCOPES).setDataStoreFactory(DATA_STORE_FACTORY).setAccessType("offline").build();}
    */
    static GoogleAuthorizationCodeFlow initializeFlowCalendar() throws IOException {
        return new GoogleAuthorizationCodeFlow.Builder(HTTP_TRANSPORT_CAL, JSON_FACTORY_CAL, getClientSecrets_cal(),
                SCOPES_CALENDAR).setDataStoreFactory(DATA_STORE_FACTORYCAL).setAccessType("offline").build();
    }

    static String getRedirectUri(HttpServletRequest req) {
        GenericUrl requestUrl = new GenericUrl(req.getRequestURL().toString());
        requestUrl.setRawPath(AUTH_CALLBACK_SERVLET_PATH);
        return requestUrl.build();
    }

    static String getUserId(HttpServletRequest req) {
        UserService userService = UserServiceFactory.getUserService();
        User user = userService.getCurrentUser();
        return user.getUserId();
    }
}