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/**
 *       Copyright 2010 Newcastle University
 *           Maciej Machulak, Lukasz Moren
 *
 *          http://research.ncl.ac.uk/smart/
 *
 *   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 net.smartam.leeloo.client;

import java.util.HashMap;
import java.util.Map;

import net.smartam.leeloo.client.request.OAuthClientRequest;
import net.smartam.leeloo.client.response.OAuthAccessTokenResponse;
import net.smartam.leeloo.client.response.OAuthJSONAccessTokenResponse;
import net.smartam.leeloo.common.OAuth;
import net.smartam.leeloo.common.exception.OAuthProblemException;
import net.smartam.leeloo.common.exception.OAuthSystemException;

/**
 * OAuth Client - exposes a high-level API for Client Applications
 *
 * @author Maciej Machulak
 * @author Lukasz Moren
 */
public class OAuthClient {

    protected HttpClient httpClient;

    public OAuthClient(HttpClient oauthClient) {
        this.httpClient = oauthClient;
    }

    public  T accessToken(
        OAuthClientRequest request,
        Class responseClass)
        throws OAuthSystemException, OAuthProblemException {

        String method = OAuth.HttpMethod.POST;
        Map headers = new HashMap();
        headers.put(OAuth.HeaderType.CONTENT_TYPE, OAuth.ContentType.URL_ENCODED);

        return httpClient.execute(request, headers, method, responseClass);
    }

    public OAuthJSONAccessTokenResponse accessToken(
        OAuthClientRequest request)
        throws OAuthSystemException, OAuthProblemException {
        return accessToken(request, OAuthJSONAccessTokenResponse.class);
    }
}