/**
 * ============LICENSE_START====================================================
 * org.onap.aaf
 * ===========================================================================
 * Copyright (c) 2018 AT&T Intellectual Property. 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.
 * ============LICENSE_END====================================================
 *
 */

package org.onap.aaf.auth.dao.cass;

import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.List;
import java.util.Map.Entry;

import org.onap.aaf.auth.dao.Bytification;
import org.onap.aaf.auth.dao.CassDAOImpl;
import org.onap.aaf.auth.dao.Loader;
import org.onap.aaf.auth.rserv.Pair;


public class Namespace implements Bytification {
	public static final int MAGIC=250935515;
	public static final int VERSION=1;
	public static final int BUFF_SIZE=48;

	public String name;
	public List<String> owner;
	public List<String> admin;
	public List<Pair<String,String>> attrib;
	public String description;
	public Integer type;
	public String parent;
	public Namespace() {}
	
	public Namespace(NsDAO.Data ndd) {
		name = ndd.name;
		description = ndd.description;
		type = ndd.type;
		parent = ndd.parent;
		if(ndd.attrib!=null && !ndd.attrib.isEmpty()) {
			attrib = new ArrayList<Pair<String,String>>();
			for( Entry<String, String> entry : ndd.attrib.entrySet()) {
				attrib.add(new Pair<String,String>(entry.getKey(),entry.getValue()));
			}
		}
	}
	
	public Namespace(NsDAO.Data ndd,List<String> owner, List<String> admin) {
		name = ndd.name;
		this.owner = owner;
		this.admin = admin;
		description = ndd.description;
		type = ndd.type;
		parent = ndd.parent;
		if(ndd.attrib!=null && !ndd.attrib.isEmpty()) {
			attrib = new ArrayList<Pair<String,String>>();
			for( Entry<String, String> entry : ndd.attrib.entrySet()) {
				attrib.add(new Pair<String,String>(entry.getKey(),entry.getValue()));
			}
		}
	}

	public NsDAO.Data data() {
		NsDAO.Data ndd = new NsDAO.Data();
		ndd.name = name;
		ndd.description = description;
		ndd.parent = parent;
		ndd.type = type;
		return ndd;
	}

	@Override
	public ByteBuffer bytify() throws IOException {
		ByteArrayOutputStream baos = new ByteArrayOutputStream();
		DataOutputStream os = new DataOutputStream(baos);

		Loader.writeHeader(os,MAGIC,VERSION);
		Loader.writeString(os, name);
		os.writeInt(type);
		Loader.writeStringSet(os,admin);
		Loader.writeStringSet(os,owner);
		Loader.writeString(os,description);
		Loader.writeString(os,parent);

		return ByteBuffer.wrap(baos.toByteArray());
	}

	@Override
	public void reconstitute(ByteBuffer bb) throws IOException {
		DataInputStream is = CassDAOImpl.toDIS(bb);
		/*int version = */Loader.readHeader(is,MAGIC,VERSION);
		// If Version Changes between Production runs, you'll need to do a switch Statement, and adequately read in fields
		
		byte[] buff = new byte[BUFF_SIZE];
		name = Loader.readString(is, buff);
		type = is.readInt();
		admin = Loader.readStringList(is,buff);
		owner = Loader.readStringList(is,buff);
		description = Loader.readString(is,buff);
		parent = Loader.readString(is,buff);
		
	}

	/* (non-Javadoc)
	 * @see java.lang.Object#hashCode()
	 */
	@Override
	public int hashCode() {
		return name.hashCode();
	}
	

	/* (non-Javadoc)
	 * @see java.lang.Object#toString()
	 */
	@Override
	public String toString() {
		return name.toString();
	}

	/* (non-Javadoc)
	 * @see java.lang.Object#equals(java.lang.Object)
	 */
	@Override
	public boolean equals(Object arg0) {
		if(arg0==null || !(arg0 instanceof Namespace)) {
			return false;
		}
		return name.equals(((Namespace)arg0).name);
	}

}