/**
 * ============LICENSE_START=======================================================
 * org.onap.aai
 * ================================================================================
 * Copyright © 2017-2018 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.aai.query.builder;

import org.apache.tinkerpop.gremlin.process.traversal.Path;
import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversal;
import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.__;
import org.apache.tinkerpop.gremlin.process.traversal.step.util.Tree;
import org.apache.tinkerpop.gremlin.structure.Edge;
import org.apache.tinkerpop.gremlin.structure.Vertex;
import org.junit.Ignore;
import org.junit.Test;
import org.onap.aai.db.props.AAIProperties;
import org.onap.aai.exceptions.AAIException;
import org.onap.aai.edges.enums.EdgeType;

import java.io.UnsupportedEncodingException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.List;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
public class TraversalQueryTest extends QueryBuilderTestAbstraction {

	
	@Override
	protected QueryBuilder<Edge> getNewEdgeTraversalWithTestEdgeRules(Vertex v) {
		return new TraversalQuery<>(loader, g, v);
	}
	
	@Override
	protected QueryBuilder<Edge> getNewEdgeTraversalWithTestEdgeRules() {
		return new TraversalQuery<>(loader, g);
	}
	
	@Override
	protected QueryBuilder<Vertex> getNewVertexTraversalWithTestEdgeRules(Vertex v) {
		return new TraversalQuery<>(loader, g, v);
	}
	
	@Override
	protected QueryBuilder<Vertex> getNewVertexTraversalWithTestEdgeRules() {
		return new TraversalQuery<>(loader, g);
	}


	protected QueryBuilder<Vertex> getNewVertexTraversal() {
		return new TraversalQuery<>(loader, g);
	}
	
	@Override
	protected QueryBuilder<Tree> getNewTreeTraversalWithTestEdgeRules(Vertex v) {
		return new TraversalQuery<>(loader, g, v);
	}

	@Override
	protected QueryBuilder<Tree> getNewTreeTraversalWithTestEdgeRules() {
		return new TraversalQuery<>(loader, g);
	}

	@Override
	protected QueryBuilder<Path> getNewPathTraversalWithTestEdgeRules(Vertex v) {
		return new TraversalQuery<>(loader, g, v);
	}

	@Override
	protected QueryBuilder<Path> getNewPathTraversalWithTestEdgeRules() {
		return new TraversalQuery<>(loader, g);
	}
	
	@Test
	public void unionQuery() {
		QueryBuilder<Vertex> tQ = getNewVertexTraversal();
		QueryBuilder<Vertex> tQ2 = getNewVertexTraversal();
		QueryBuilder<Vertex> tQ3 = getNewVertexTraversal();
		tQ.union(
				tQ2.getVerticesByProperty("test1", "value1"),
				tQ3.getVerticesByIndexedProperty("test2", "value2"));

		GraphTraversal<Vertex, Vertex> expected = __.<Vertex>start()
				.union(__.has("test1", "value1"),__.has("test2", "value2"));

		assertEquals("they are equal", expected, tQ.getQuery());


	}

	@Test
	public void traversalClones() throws UnsupportedEncodingException, AAIException, URISyntaxException {
		QueryBuilder<Vertex> tQ = getNewVertexTraversal();
		QueryBuilder<Vertex> builder = tQ.createQueryFromURI(new URI("network/generic-vnfs/generic-vnf/key1")).getQueryBuilder();
		GraphTraversal<Vertex, Vertex> expected = __.<Vertex>start().has("vnf-id", "key1").has("aai-node-type", "generic-vnf");
		GraphTraversal<Vertex, Vertex> containerExpected = __.<Vertex>start().has("aai-node-type", "generic-vnf");

		assertEquals("query object", expected.toString(), builder.getQuery().toString());
		assertEquals("container query object", containerExpected.toString(), builder.getContainerQuery().getQuery().toString());


	}

	// TODO - Identify why this unit test is failing and if this
	// is going to cause any problems
	@Test
	@Ignore("Not working ever since the change to using model driven development")
	public void nestedTraversalClones() throws UnsupportedEncodingException, AAIException, URISyntaxException {

		QueryBuilder<Vertex> tQ = getNewVertexTraversal();
		QueryBuilder<Vertex> builder = tQ.createQueryFromURI(new URI("network/generic-vnfs/generic-vnf/key1/l-interfaces/l-interface/key2")).getQueryBuilder();
		GraphTraversal<Vertex, Vertex> expected = __.<Vertex>start()
				.has("vnf-id", "key1")
				.has("aai-node-type", "generic-vnf")
				.in("org.onap.relationships.inventory.BelongsTo").has(AAIProperties.NODE_TYPE, "l-interface")
				.has("interface-name", "key2");
		GraphTraversal<Vertex, Vertex> containerExpected = __.<Vertex>start()
				.has("vnf-id", "key1")
				.has("aai-node-type", "generic-vnf")
				.in("org.onap.relationships.inventory.BelongsTo")
				.has(AAIProperties.NODE_TYPE, "l-interface");
		
		assertEquals("query object", expected.toString(), builder.getQuery().toString());
		assertEquals("container query object", containerExpected.toString(), builder.getContainerQuery().getQuery().toString());
		

	}
	
	@Test
	public void abstractEdgeToVertexTraversalTest() throws AAIException {
				
		Vertex gvnf = g.addV("aai-node-type","generic-vnf","vnf-id","gvnf").next();
		Vertex vnfc1 = g.addV("aai-node-type","vnfc","vnfc-name","a-name").next();
		
		testEdgeSer.addEdge(g, gvnf, vnfc1);
		
		QueryBuilder<Vertex> tQ = getNewVertexTraversalWithTestEdgeRules(gvnf);
		tQ.createEdgeTraversal(EdgeType.COUSIN, "vnf", "vnfc");
		
		List<Vertex> list = tQ.toList();

		assertEquals("Has 1 vertexes ", 1, list.size());
		assertTrue("Has vertex on the default edge ", list.contains(vnfc1));
		

	}
	
	@Test
	public void abstractEdgeToVertexTraversalSingleOutRuleTest() throws AAIException {
				
		Vertex vce = g.addV("aai-node-type","vce","vnf-id","vce").next();
		Vertex vnfc1 = g.addV("aai-node-type","vnfc","vnfc-name","a-name").next();
		
		testEdgeSer.addEdge(g, vce, vnfc1);
		
		QueryBuilder<Vertex> tQ1 = getNewVertexTraversalWithTestEdgeRules(vce);
		tQ1.createEdgeTraversal(EdgeType.COUSIN, "vnf", "vnfc");
		
		QueryBuilder<Vertex> tQ2 = getNewVertexTraversalWithTestEdgeRules(vnfc1);
		tQ2.createEdgeTraversal(EdgeType.COUSIN, "vnfc", "vnf");
		
		List<Vertex> list1 = tQ1.toList();
		List<Vertex> list2 = tQ2.toList();
		
		assertEquals("1 - Has 1 vertexes ", 1, list1.size());
		assertTrue("1 - traversal results in vnfc ", list1.contains(vnfc1));
		assertEquals("2 - Has 1 vertexes ", 1, list2.size());
		assertTrue("2 - traversal results in vce ", list2.contains(vce));
		

	}
	
	@Test
	public void abstractEdgeToVertexTraversalSingleInRuleTest() throws AAIException {
				
		Vertex vce = g.addV("aai-node-type","vce","vnf-id","vce").next();
		Vertex pserver = g.addV("aai-node-type","pserver","hostname","a-name").next();
		
		testEdgeSer.addEdge(g, vce, pserver);
		
		QueryBuilder<Vertex> tQ1 = getNewVertexTraversalWithTestEdgeRules(vce);
		tQ1.createEdgeTraversal(EdgeType.COUSIN, "vnf", "pserver");
		
		List<Vertex> list = tQ1.toList();

		assertEquals("1 - Has 1 vertexes ", 1, list.size());
		assertTrue("1 - traversal results in vnfc ", list.contains(pserver));
		

	}
	
	@Test
	public void abstractEdgeToVertexMultiRuleTraversalTest() throws AAIException {
				
		Vertex gvnf = g.addV("aai-node-type","generic-vnf","vnf-id","gvnf").next();
		Vertex vnfc1 = g.addV("aai-node-type","vnfc","vnfc-name","a-name").next();
		Vertex vnfc2 = g.addV("aai-node-type","vnfc","vnfc-name","b-name").next();
		
		testEdgeSer.addEdge(g, gvnf, vnfc1);
		testEdgeSer.addEdge(g, gvnf, vnfc2, "re-uses");
		
		QueryBuilder<Vertex> tQ = getNewVertexTraversalWithTestEdgeRules(gvnf);
		tQ.createEdgeTraversal(EdgeType.COUSIN, "vnf", "vnfc");
		
		List<Vertex> list = tQ.toList();

		assertEquals("Has 2 vertexes ", 2, list.size());
		assertTrue("Has vertex on the default edge ", list.contains(vnfc1));
		assertTrue("Has vertex on the re-uses edge ", list.contains(vnfc2));
		

	}
	
	@Test
	public void abstractEdgeToVertexMultiRuleOutTraversalTest() throws AAIException {
			
		Vertex gvnf = g.addV("aai-node-type","generic-vnf","vnf-id","gvnf").next();
		Vertex pserver = g.addV("aai-node-type","pserver","hostname","a-name").next();
		
		testEdgeSer.addEdge(g, gvnf, pserver);
		testEdgeSer.addEdge(g, gvnf, pserver, "generic-vnf-pserver-B");
		
		QueryBuilder<Vertex> tQ = getNewVertexTraversalWithTestEdgeRules(gvnf);
		tQ.createEdgeTraversal(EdgeType.COUSIN, "vnf", "pserver");
		
		List<Vertex> list = tQ.toList();
	
		assertEquals("Has 2 vertexes ", 2, list.size());
		assertTrue("result has pserver ", list.contains(pserver));
		

	}
	
	@Test
	public void abstractEdgeToVertexMultiRuleInTraversalTest() throws AAIException {
			
		Vertex gvnf = g.addV("aai-node-type","generic-vnf","vnf-id","gvnf").next();
		Vertex complex = g.addV("aai-node-type","complex","physical-location-id","a-name").next();
		
		testEdgeSer.addEdge(g, gvnf, complex);
		testEdgeSer.addEdge(g, gvnf, complex, "complex-generic-vnf-B");
		
		QueryBuilder<Vertex> tQ = getNewVertexTraversalWithTestEdgeRules(gvnf);
		tQ.createEdgeTraversal(EdgeType.COUSIN, "vnf", "complex");
		
		List<Vertex> list = tQ.toList();
	
		assertEquals("Has 2 vertexes ", 2, list.size());
		assertTrue("result has pserver ", list.contains(complex));
		

	}


	
}