/*-
 * ============LICENSE_START=======================================================
 * org.openecomp.aai
 * ================================================================================
 * Copyright (C) 2017 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.openecomp.aai.parsers.query;

import java.io.UnsupportedEncodingException;
import java.net.URI;

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

import org.openecomp.aai.exceptions.AAIException;
import org.openecomp.aai.introspection.Introspector;
import org.openecomp.aai.introspection.Loader;
import org.openecomp.aai.parsers.uri.Parsable;
import org.openecomp.aai.parsers.uri.URIParser;
import org.openecomp.aai.parsers.uri.URIToDBKey;
import org.openecomp.aai.query.builder.QueryBuilder;
import org.openecomp.aai.serialization.db.EdgeType;


/**
 * The Class UniqueURIQueryParser.
 */
public class UniqueURIQueryParser extends QueryParser implements Parsable {

	
	private URIToDBKey dbKeyParser = null;
	
	private Introspector previous = null;
	
	private boolean endsInContainer = false;
	
	private Introspector finalContainer = null;
	
	private String parentName = "";
	
	/**
	 * Instantiates a new unique URI query parser.
	 *
	 * @param loader the loader
	 * @param queryBuilder the query builder
	 * @param uri the uri
	 * @throws UnsupportedEncodingException the unsupported encoding exception
	 * @throws IllegalArgumentException the illegal argument exception
	 * @throws AAIException the AAI exception
	 */
	public UniqueURIQueryParser(Loader loader, QueryBuilder queryBuilder, URI uri) throws UnsupportedEncodingException, IllegalArgumentException, AAIException {
		super(loader, queryBuilder, uri);
		URIParser parser = new URIParser(loader, uri);
		parser.parse(this);
		
		if (!endsInContainer) {
			this.dbKeyParser = new URIToDBKey(loader, uri);
			String dbKey = (String)dbKeyParser.getResult();
			queryBuilder.getVerticesByIndexedProperty("aai-unique-key", dbKey);
			queryBuilder.markParentBoundary();
			
			if (!(parentName.equals("") || parentName.equals(this.resultResource))) {
				URI parentUri = UriBuilder.fromPath(uri.getRawPath().substring(0, uri.getRawPath().indexOf(containerResource))).build();
				this.dbKeyParser = new URIToDBKey(loader, parentUri);
				this.parentQueryBuilder = queryBuilder.newInstance().getVerticesByIndexedProperty("aai-unique-key", (String)dbKeyParser.getResult());
				this.parentResourceType = parentName;
			} 
			this.containerResource = "";
		} else {
			URI parentUri = UriBuilder.fromPath(uri.getRawPath().substring(0, uri.getRawPath().indexOf(this.finalContainer.getDbName()))).build();
			this.dbKeyParser = new URIToDBKey(loader, parentUri);
			String dbKey = (String)dbKeyParser.getResult();
			this.parentResourceType = parentName;

			if (!dbKey.equals("")) {
				queryBuilder.getVerticesByIndexedProperty("aai-unique-key", dbKey);
				queryBuilder.markParentBoundary();
				queryBuilder.createEdgeTraversal(EdgeType.TREE, previous, finalContainer);

			} 
			
			queryBuilder.createContainerQuery(finalContainer);
				
			
		}
	}
	
	
	/**
	 * Instantiates a new unique URI query parser.
	 *
	 * @param loader the loader
	 * @param queryBuilder the query builder
	 */
	public UniqueURIQueryParser(Loader loader, QueryBuilder queryBuilder) {
		super(loader, queryBuilder);
	}


	/**
	 * @{inheritDoc}
	 */
	@Override
	public void processObject(Introspector obj, MultivaluedMap<String, String> uriKeys) {
		this.resultResource = obj.getDbName();
		if (previous != null) {
			this.parentName = previous.getDbName();
		}
		this.previous  = obj;
		
		
	}


	/**
	 * @{inheritDoc}
	 */
	@Override
	public void processContainer(Introspector obj, MultivaluedMap<String, String> uriKeys, boolean isFinalContainer) {
		this.containerResource = obj.getName();
		if (previous != null) {
			this.parentName = previous.getDbName();
		}
		if (isFinalContainer) {
			this.endsInContainer = true;
			this.resultResource = obj.getChildDBName();
			
			this.finalContainer = obj;
		}
		
	}
	
	/**
	 * @{inheritDoc}
	 */
	@Override
	public void processNamespace(Introspector obj) {
	
	}

	/**
	 * @{inheritDoc}
	 */
	@Override
	public String getCloudRegionTransform() {
		return "add";
	}

	/**
	 * @{inheritDoc}
	 */
	@Override
	public boolean useOriginalLoader() {
		return false;
	}
	
}