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/*
 * DISCLAIMER
 *
 * Copyright 2016 ArangoDB GmbH, Cologne, Germany
 *
 * 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.
 *
 * Copyright holder is ArangoDB GmbH, Cologne, Germany
 */

package com.arangodb.internal.util;

import java.util.Map.Entry;

import org.apache.http.auth.Credentials;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.arangodb.util.ArangoSerialization;
import com.arangodb.velocystream.Request;
import com.arangodb.velocystream.RequestType;

/**
 * @author Mark Vollmary
 *
 */
public class CURLLogger {

	private static Logger LOGGER = LoggerFactory.getLogger(CURLLogger.class);

	private CURLLogger() {
	}

	public static void log(
		final String url,
		final Request request,
		final Credentials credencials,
		final ArangoSerialization util) {
		final RequestType requestType = request.getRequestType();
		final boolean includeBody = (requestType == RequestType.POST || requestType == RequestType.PUT
				|| requestType == RequestType.PATCH || requestType == RequestType.DELETE) && request.getBody() != null;
		final StringBuilder buffer = new StringBuilder();
		if (includeBody) {
			buffer.append("\n");
			buffer.append("cat <<-___EOB___ | ");
		}
		buffer.append("curl -X ").append(requestType);
		buffer.append(" --dump -");
		if (request.getHeaderParam().size() > 0) {
			for (final Entry header : request.getHeaderParam().entrySet()) {
				buffer.append(" -H '").append(header.getKey()).append(":").append(header.getValue()).append("'");
			}
		}
		if (credencials != null) {
			buffer.append(" -u ").append(credencials.getUserPrincipal().getName()).append(":")
					.append(credencials.getPassword());
		}
		if (includeBody) {
			buffer.append(" -d @-");
		}
		buffer.append(" '").append(url).append("'");
		if (includeBody) {
			buffer.append("\n");
			buffer.append(util.deserialize(request.getBody(), String.class));
			buffer.append("\n");
			buffer.append("___EOB___");
		}
		LOGGER.debug("[CURL] {}", buffer);
	}
}