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This code library updates and adds OAuth providers to the base ScribeUP library, available from https://github.com/PeterKnego/scribe-up.

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package org.eurekaclinical.scribeupext;

/*
 * #%L
 * Eureka! Clinical ScribeUP Extensions
 * %%
 * Copyright (C) 2014 Emory University
 * %%
 * 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.
 * #L%
 */

import org.scribe.builder.api.DefaultApi20;
import org.scribe.extractors.AccessTokenExtractor;
import org.scribe.extractors.JsonTokenExtractor;
import org.scribe.model.OAuthConfig;
import org.scribe.model.Verb;
import org.scribe.utils.OAuthEncoder;
import org.scribe.utils.Preconditions;

/**
 *
 * @author Andrew Post
 */
public class GlobusApi extends DefaultApi20 {
	private static final String AUTHORIZE_URL = "https://www.globus.org/OAuth?response_type=code&client_id=%s&redirect_uri=%s";
	
	@Override
	public String getAccessTokenEndpoint() {
		return "https://nexus.api.globusonline.org/goauth/token";
	}
	
	@Override
	public Verb getAccessTokenVerb() {
		return Verb.POST;
	}

	@Override
	public AccessTokenExtractor getAccessTokenExtractor() {
		return new JsonTokenExtractor();
	}
	
	@Override
	public String getAuthorizationUrl(OAuthConfig config) {
		Preconditions.checkValidUrl(config.getCallback(),
				"Must provide a valid url as callback.");
		return String.format(AUTHORIZE_URL, config.getApiKey(), 
				OAuthEncoder.encode(config.getCallback()));
	}
}