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ArangoDB Java Driver
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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;

import java.io.UnsupportedEncodingException;
import java.util.Map.Entry;

import com.arangodb.ArangoDBException;
import com.arangodb.internal.util.ArangoSerializationFactory;
import com.arangodb.internal.util.ArangoSerializationFactory.Serializer;
import com.arangodb.internal.util.EncodeUtils;
import com.arangodb.util.ArangoSerialization;
import com.arangodb.velocystream.Request;
import com.arangodb.velocystream.RequestType;

/**
 * @author Mark Vollmary
 *
 */
public abstract class ArangoExecuteable {

	private static final String SLASH = "/";

	protected final E executor;
	protected final ArangoSerializationFactory util;
	protected final ArangoContext context;

	protected ArangoExecuteable(final E executor, final ArangoSerializationFactory util, final ArangoContext context) {
		super();
		this.executor = executor;
		this.util = util;
		this.context = context;
	}

	protected E executor() {
		return executor;
	}

	public ArangoSerialization util() {
		return util.get(Serializer.INTERNAL);
	}

	public ArangoSerialization util(final Serializer serializer) {
		return util.get(serializer);
	}

	protected Request request(final String database, final RequestType requestType, final String... path) {
		final Request request = new Request(database, requestType, createPath(path));
		for (final Entry header : context.getHeaderParam().entrySet()) {
			request.putHeaderParam(header.getKey(), header.getValue());
		}
		return request;
	}

	protected static String createPath(final String... params) {
		final StringBuilder sb = new StringBuilder();
		for (int i = 0; i < params.length; i++) {
			if (i > 0) {
				sb.append(SLASH);
			}
			try {
				final String param;
				if (params[i].contains(SLASH)) {
					param = createPath(params[i].split(SLASH));
				} else {
					param = EncodeUtils.encodeURL(params[i]);
				}
				sb.append(param);
			} catch (final UnsupportedEncodingException e) {
				throw new ArangoDBException(e);
			}
		}
		return sb.toString();
	}

}