/**
 * ============LICENSE_START=======================================================
 * org.onap.aai
 * ================================================================================
 * Copyright © 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=========================================================
 *
 * ECOMP is a trademark and service mark of AT&T Intellectual Property.
 */
package org.onap.aai.parsers.uri;

import org.onap.aai.exceptions.AAIException;
import org.onap.aai.introspection.Introspector;
import org.onap.aai.introspection.Loader;
import org.onap.aai.introspection.Version;
import org.onap.aai.introspection.exceptions.AAIUnknownObjectException;
import org.onap.aai.serialization.db.EdgeType;
import org.onap.aai.util.AAIApiServerURLBase;
import org.onap.aai.workarounds.LegacyURITransformer;

import javax.ws.rs.core.MultivaluedMap;
import java.io.UnsupportedEncodingException;
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.List;

/**
 * Given a URI a Relationship Object is returned.
 * 
 * The relationship-data objects are created from the keys in the model.
 * The keys are processed in the order they appear in the model.
 
 *
 */
public class URIToRelationshipObject implements Parsable {
	
	private Introspector result = null;
			
	private LegacyURITransformer uriTransformer = null;
	
	private Version originalVersion = null;
	
	private Introspector relationship = null;
	
	private Loader loader = null;
	
	private String baseURL; 
	
	private final URI uri;
	/**
	 * Instantiates a new URI to relationship object.
	 *
	 * @param loader the loader
	 * @param uri the uri
	 * @throws IllegalArgumentException the illegal argument exception
	 * @throws AAIException the AAI exception
	 * @throws UnsupportedEncodingException the unsupported encoding exception
	 * @throws MalformedURLException the malformed URL exception
	 */
	public URIToRelationshipObject(Loader loader, URI uri) throws AAIException {
		
		this.loader = loader;
		uriTransformer = LegacyURITransformer.getInstance();
		originalVersion = loader.getVersion();

		try {
			relationship = loader.introspectorFromName("relationship");
		} catch (AAIUnknownObjectException e1) {
			throw new RuntimeException("Fatal error - could not load relationship object!", e1);
		}

		this.baseURL = AAIApiServerURLBase.get(originalVersion);
		this.uri = uri;
		
		}
		
	public URIToRelationshipObject(Loader loader, URI uri, String baseURL) throws AAIException {
		this(loader, uri);
		
		if (baseURL != null) {
			this.baseURL = baseURL;
		}
	}

	
	/**
	 * @{inheritDoc}
	 */
	@Override
	public String getCloudRegionTransform(){
		return "remove";
	}
	
	/**
	 * @{inheritDoc}
	 */
	@Override
	public void processNamespace(Introspector obj) {
	
	}
	
	/**
	 * @{inheritDoc}
	 */
	@Override
	public boolean useOriginalLoader() {
		return true;
	}
	
	/**
	 * Gets the result.
	 *
	 * @return the result
	 * @throws AAIException 
	 * @throws UnsupportedEncodingException 
	 * @throws URISyntaxException 
	 */
	public Introspector getResult() throws UnsupportedEncodingException, AAIException, URISyntaxException {
		URIParser parser = new URIParser(this.loader, this.uri);
		parser.parse(this);
		URI originalUri = parser.getOriginalURI();
		
		URI relatedLink = new URI(this.baseURL + this.originalVersion + "/" + originalUri);
		if (this.originalVersion.compareTo(Version.v10) >= 0) {
			//only return the path section of the URI past v10
			relatedLink = new URI(relatedLink.getRawPath());
		}
		
		this.relationship.setValue("related-link", relatedLink.toString());
		
		this.result = relationship;
		return this.result;
	}

	@Override
	public void processObject(Introspector obj, EdgeType type, MultivaluedMap<String, String> uriKeys)
			throws AAIException {
		for (String key : obj.getKeys()) {
			try {
				Introspector data = loader.introspectorFromName("relationship-data");
				data.setValue("relationship-key", obj.getDbName() + "." + key);
				data.setValue("relationship-value", obj.getValue(key));
				
				((List<Object>)relationship.getValue("relationship-data")).add(data.getUnderlyingObject());
			} catch (AAIUnknownObjectException e) {
				throw new RuntimeException("Fatal error - relationship-data object not found!");
			}
		}
		relationship.setValue("related-to", obj.getDbName());
	}

	@Override
	public void processContainer(Introspector obj, EdgeType type, MultivaluedMap<String, String> uriKeys,
			boolean isFinalContainer) throws AAIException {
	}
}