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/**
 * Copyright 2012, OVH. All rights reserved.
 *
 * 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.ovh.ws.jsonizer.common.http;

import java.net.URI;
import java.util.HashMap;
import java.util.Map;

import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.ovh.ws.common.OvhWsException;
import com.ovh.ws.common.OvhWsException.Type;
import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.ClientHandlerException;
import com.sun.jersey.api.client.UniformInterfaceException;
import com.sun.jersey.api.client.WebResource.Builder;
import com.sun.jersey.core.util.MultivaluedMapImpl;

/* package */class JerseyWebResource implements WebResource {

	private static final Logger LOG = LoggerFactory.getLogger(JerseyWebResource.class);

	private final com.sun.jersey.api.client.WebResource resource;

	private final Map headers = new HashMap();
	private final MultivaluedMap requestParams = new MultivaluedMapImpl();

	public JerseyWebResource(Client client, URI uri) {
		resource = client.resource(uri);
	}

	@Override
	public void queryParams(Map params) throws OvhWsException {
		for (Map.Entry e : params.entrySet()) {
			requestParams.add(e.getKey(), e.getValue());
		}
	}

	@Override
	public void headers(Map headers) {
		this.headers.putAll(headers);
	}

	@Override
	public String execute() throws OvhWsException {
		try {
			LOG.debug("Jsonizer : {}", resource);

			return builder().type(MediaType.APPLICATION_FORM_URLENCODED_TYPE).post(String.class, requestParams);

		} catch (ClientHandlerException che) {
			throw new OvhWsException(Type.ServerError, "A server error occured, please retry later", che);

		} catch (UniformInterfaceException uie) {
			throw new OvhWsException(Type.ServerError, "A server error occurred, please retry later", uie);
		}
	}

	private Builder builder() {
		Builder builder = resource.getRequestBuilder();
		for (Map.Entry e : headers.entrySet()) {
			builder = builder.header(e.getKey(), e.getValue());
		}
		return builder;
	}
}