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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.velocypack;

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

import com.arangodb.entity.BaseDocument;
import com.arangodb.entity.BaseEdgeDocument;
import com.arangodb.entity.CollectionType;
import com.arangodb.entity.DocumentField;
import com.arangodb.entity.LogLevel;
import com.arangodb.internal.velocystream.internal.AuthenticationRequest;
import com.arangodb.model.TraversalOptions;
import com.arangodb.model.TraversalOptions.Order;
import com.arangodb.velocypack.VPackBuilder;
import com.arangodb.velocypack.VPackSerializationContext;
import com.arangodb.velocypack.VPackSerializer;
import com.arangodb.velocypack.ValueType;
import com.arangodb.velocypack.exception.VPackException;
import com.arangodb.velocystream.Request;

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

	public static final VPackSerializer REQUEST = new VPackSerializer() {
		@Override
		public void serialize(
			final VPackBuilder builder,
			final String attribute,
			final Request value,
			final VPackSerializationContext context) throws VPackException {
			builder.add(attribute, ValueType.ARRAY);
			builder.add(value.getVersion());
			builder.add(value.getType());
			builder.add(value.getDatabase());
			builder.add(value.getRequestType().getType());
			builder.add(value.getRequest());
			builder.add(ValueType.OBJECT);
			for (final Entry entry : value.getQueryParam().entrySet()) {
				builder.add(entry.getKey(), entry.getValue());
			}
			builder.close();
			builder.add(ValueType.OBJECT);
			for (final Entry entry : value.getHeaderParam().entrySet()) {
				builder.add(entry.getKey(), entry.getValue());
			}
			builder.close();
			builder.close();
		}
	};

	public static final VPackSerializer AUTH_REQUEST = new VPackSerializer() {
		@Override
		public void serialize(
			final VPackBuilder builder,
			final String attribute,
			final AuthenticationRequest value,
			final VPackSerializationContext context) throws VPackException {
			builder.add(attribute, ValueType.ARRAY);
			builder.add(value.getVersion());
			builder.add(value.getType());
			builder.add(value.getEncryption());
			builder.add(value.getUser());
			builder.add(value.getPassword());
			builder.close();
		}
	};

	public static final VPackSerializer COLLECTION_TYPE = new VPackSerializer() {
		@Override
		public void serialize(
			final VPackBuilder builder,
			final String attribute,
			final CollectionType value,
			final VPackSerializationContext context) throws VPackException {
			builder.add(attribute, value.getType());
		}
	};

	public static final VPackSerializer BASE_DOCUMENT = new VPackSerializer() {
		@Override
		public void serialize(
			final VPackBuilder builder,
			final String attribute,
			final BaseDocument value,
			final VPackSerializationContext context) throws VPackException {
			final Map doc = new HashMap();
			doc.putAll(value.getProperties());
			doc.put(DocumentField.Type.ID.getSerializeName(), value.getId());
			doc.put(DocumentField.Type.KEY.getSerializeName(), value.getKey());
			doc.put(DocumentField.Type.REV.getSerializeName(), value.getRevision());
			context.serialize(builder, attribute, doc);
		}
	};

	public static final VPackSerializer BASE_EDGE_DOCUMENT = new VPackSerializer() {
		@Override
		public void serialize(
			final VPackBuilder builder,
			final String attribute,
			final BaseEdgeDocument value,
			final VPackSerializationContext context) throws VPackException {
			final Map doc = new HashMap();
			doc.putAll(value.getProperties());
			doc.put(DocumentField.Type.ID.getSerializeName(), value.getId());
			doc.put(DocumentField.Type.KEY.getSerializeName(), value.getKey());
			doc.put(DocumentField.Type.REV.getSerializeName(), value.getRevision());
			doc.put(DocumentField.Type.FROM.getSerializeName(), value.getFrom());
			doc.put(DocumentField.Type.TO.getSerializeName(), value.getTo());
			context.serialize(builder, attribute, doc);
		}
	};

	public static final VPackSerializer TRAVERSAL_ORDER = new VPackSerializer() {
		@Override
		public void serialize(
			final VPackBuilder builder,
			final String attribute,
			final Order value,
			final VPackSerializationContext context) throws VPackException {
			if (TraversalOptions.Order.preorder_expander == value) {
				builder.add(attribute, "preorder-expander");
			} else {
				builder.add(attribute, value.name());
			}
		}
	};

	public static final VPackSerializer LOG_LEVEL = new VPackSerializer() {
		@Override
		public void serialize(
			final VPackBuilder builder,
			final String attribute,
			final LogLevel value,
			final VPackSerializationContext context) throws VPackException {
			builder.add(attribute, value.getLevel());
		}
	};
}