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Add OAuth2 API for Meetup.com
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‎README.md‎

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@@ -79,7 +79,7 @@ ScribeJava support out-of-box several HTTP clients:
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* LinkedIn (https://www.linkedin.com/) [example](https://github.com/scribejava/scribejava/blob/master/scribejava-apis/src/test/java/com/github/scribejava/apis/examples/LinkedIn20Example.java), [example](https://github.com/scribejava/scribejava/blob/master/scribejava-apis/src/test/java/com/github/scribejava/apis/examples/LinkedInExample.java), [example with custom scopes](https://github.com/scribejava/scribejava/blob/master/scribejava-apis/src/test/java/com/github/scribejava/apis/examples/LinkedInExampleWithScopes.java)
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* Mail.Ru (https://mail.ru/) [example](https://github.com/scribejava/scribejava/blob/master/scribejava-apis/src/test/java/com/github/scribejava/apis/examples/MailruExample.java), [example with Async Ning HTTP Client](https://github.com/scribejava/scribejava/blob/master/scribejava-apis/src/test/java/com/github/scribejava/apis/examples/MailruAsyncExample.java)
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* MediaWiki (https://www.mediawiki.org/) [example](https://github.com/scribejava/scribejava/blob/master/scribejava-apis/src/test/java/com/github/scribejava/apis/examples/MediaWikiExample.java)
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* Meetup (http://www.meetup.com/) [example](https://github.com/scribejava/scribejava/blob/master/scribejava-apis/src/test/java/com/github/scribejava/apis/examples/MeetupExample.java)
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* Meetup (http://www.meetup.com/) [example](https://github.com/scribejava/scribejava/blob/master/scribejava-apis/src/test/java/com/github/scribejava/apis/examples/Meetup20Example.java), [example](https://github.com/scribejava/scribejava/blob/master/scribejava-apis/src/test/java/com/github/scribejava/apis/examples/MeetupExample.java)
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* Microsoft Azure Active Directory (Azure AD) (http://azure.microsoft.com/) [example](https://github.com/scribejava/scribejava/blob/master/scribejava-apis/src/test/java/com/github/scribejava/apis/examples/MicrosoftAzureActiveDirectoryExample.java)
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* Microsoft Azure Active Directory (Azure AD) 2.0 (http://azure.microsoft.com/) [example](https://github.com/scribejava/scribejava/blob/master/scribejava-apis/src/test/java/com/github/scribejava/apis/examples/MicrosoftAzureActiveDirectory20Example.java)
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* Microsoft Live (https://login.live.com/) [example](https://github.com/scribejava/scribejava/blob/master/scribejava-apis/src/test/java/com/github/scribejava/apis/examples/LiveExample.java)

‎changelog‎

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[SNAPSHOT]
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* Add OAuth2 support for Meetup.com
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[6.6.3]
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* fix NPE for OpenId providers
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‎scribejava-apis/src/main/java/com/github/scribejava/apis/MeetupApi20.java‎

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package com.github.scribejava.apis;
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import com.github.scribejava.core.builder.api.DefaultApi20;
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import com.github.scribejava.core.oauth2.clientauthentication.ClientAuthentication;
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import com.github.scribejava.core.oauth2.clientauthentication.RequestBodyAuthenticationScheme;
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public class MeetupApi20 extends DefaultApi20 {
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protected MeetupApi20() {
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}
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private static class InstanceHolder {
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private static final MeetupApi20 INSTANCE = new MeetupApi20();
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}
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public static MeetupApi20 instance() {
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return InstanceHolder.INSTANCE;
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}
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@Override
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public String getAccessTokenEndpoint() {
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return "https://secure.meetup.com/oauth2/access";
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}
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@Override
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protected String getAuthorizationBaseUrl() {
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return "https://secure.meetup.com/oauth2/authorize";
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}
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@Override
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public ClientAuthentication getClientAuthentication() {
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return RequestBodyAuthenticationScheme.instance();
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}
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}

‎scribejava-apis/src/test/java/com/github/scribejava/apis/examples/Meetup20Example.java‎

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package com.github.scribejava.apis.examples;
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import com.github.scribejava.apis.MeetupApi20;
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import com.github.scribejava.core.builder.ServiceBuilder;
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import com.github.scribejava.core.model.*;
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import com.github.scribejava.core.oauth.OAuth20Service;
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import java.io.IOException;
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import java.util.Random;
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import java.util.Scanner;
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import java.util.concurrent.ExecutionException;
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public class Meetup20Example {
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private static final String NETWORK_NAME = "Meetup";
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private static final String PROTECTED_RESOURCE_URL = " https://api.meetup.com/self/groups";
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private Meetup20Example() {
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}
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@SuppressWarnings("PMD.SystemPrintln")
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public static void main(String... args) throws IOException, InterruptedException, ExecutionException {
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// Replace these with your Meetup consumer id and secret
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final String consumerKey = "your consumer key";
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final String consumerSecret = "your consumer secret";
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final OAuth20Service service = new ServiceBuilder(consumerKey)
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.apiSecret(consumerSecret)
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.defaultScope("basic") // replace with desired scopes
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.callback("http://example.com/callback") // replace with appropriate URI for your consumer,
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// see https://www.meetup.com/meetup_api/auth/#redirect_uris
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.build(MeetupApi20.instance());
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final Scanner in = new Scanner(System.in);
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System.out.println("=== " + NETWORK_NAME + "'s OAuth Workflow ===");
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System.out.println();
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// Obtain the Authorization URL
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System.out.println("Fetching the Authorization URL...");
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final String secretState = "secret" + new Random().nextInt(999_999);
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final String authorizationUrl = service.getAuthorizationUrl(secretState);
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System.out.println("Got the Authorization URL!");
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System.out.println("Now go and authorize ScribeJava here:");
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System.out.println(authorizationUrl);
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System.out.println("And paste the authorization code here");
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System.out.print(">>");
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final String code = in.nextLine();
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System.out.println();
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System.out.println("Trading the Authorization Code for an Access Token...");
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final OAuth2AccessToken accessToken = service.getAccessToken(code);
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System.out.println("Got the Access Token!");
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System.out.println("(The raw response looks like this: " + accessToken.getRawResponse() + "')");
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System.out.println();
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System.out.println("Now we're going to the user's groups....");
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final OAuthRequest request = new OAuthRequest(Verb.GET, PROTECTED_RESOURCE_URL);
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service.signRequest(accessToken, request);
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final Response response = service.execute(request);
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System.out.println();
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System.out.println(response.getCode());
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System.out.println(response.getBody());
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System.out.println();
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}
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}

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