/**
 * ============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.introspection.sideeffect;

import org.janusgraph.core.JanusGraphFactory;
import org.janusgraph.core.JanusGraph;
import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversalSource;
import org.apache.tinkerpop.gremlin.structure.Edge;
import org.apache.tinkerpop.gremlin.structure.Graph;
import org.apache.tinkerpop.gremlin.structure.Vertex;
import org.apache.tinkerpop.gremlin.structure.Direction;
import org.apache.tinkerpop.gremlin.structure.VertexProperty;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.*;
import org.junit.*;
import org.junit.rules.ExpectedException;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import org.onap.aai.AAISetup;
import org.onap.aai.db.props.AAIProperties;
import org.onap.aai.dbmap.DBConnectionType;
import org.onap.aai.exceptions.AAIException;
import org.onap.aai.introspection.*;
import org.onap.aai.parsers.query.QueryParser;
import org.onap.aai.serialization.db.DBSerializer;
import org.onap.aai.edges.enums.EdgeProperty;
import org.onap.aai.serialization.engines.QueryStyle;
import org.onap.aai.serialization.engines.JanusGraphDBEngine;
import org.onap.aai.serialization.engines.TransactionalGraphEngine;

import java.io.UnsupportedEncodingException;
import java.lang.reflect.InvocationTargetException;
import java.net.MalformedURLException;
import java.net.URISyntaxException;
import java.util.Arrays;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;

import static org.junit.Assert.*;
import static org.mockito.Mockito.spy;
import static org.mockito.Mockito.when;

@RunWith(value = Parameterized.class)
public class DataLinkTest extends AAISetup {

	private static JanusGraph graph;
	private final static ModelType introspectorFactoryType = ModelType.MOXY;
	private final static DBConnectionType type = DBConnectionType.REALTIME;
	private static Loader loader;
	private static TransactionalGraphEngine dbEngine;
	@Mock private QueryParser parser;
	@Mock private Vertex self;
	@Mock private VertexProperty<String> prop;
	@Rule
	public ExpectedException thrown = ExpectedException.none();

	
    
	@Parameterized.Parameter(value = 0)
	public QueryStyle queryStyle;

	@Parameterized.Parameters(name = "QueryStyle.{0}")
	public static Collection<Object[]> data() {
		return Arrays.asList(new Object[][]{
				{QueryStyle.TRAVERSAL},
				{QueryStyle.TRAVERSAL_URI}
		});
	}
	
	@BeforeClass
	public static void setup() throws NoSuchFieldException, SecurityException, Exception {
		graph = JanusGraphFactory.build().set("storage.backend","inmemory").open();
		

		graph.traversal().addV("aai-node-type", "vpn-binding", "vpn-id", "addKey", AAIProperties.AAI_URI, "/network/vpn-bindings/vpn-binding/addKey").as("v1")
		.addV("aai-node-type", "vpn-binding", "vpn-id", "modifyKey", AAIProperties.AAI_URI, "/network/vpn-bindings/vpn-binding/modifyKey").as("v2")
		.addV("aai-node-type", "route-target", "global-route-target", "modifyTargetKey", "route-target-role", "modifyRoleKey", "linked", true, AAIProperties.AAI_URI, "/network/vpn-bindings/vpn-binding/modifyKey/route-targets/route-target/modifyTargetKey/modifyRoleKey")
				.addOutE("org.onap.relationships.inventory.BelongsTo", "v2", EdgeProperty.CONTAINS.toString(), true)
		.addV("aai-node-type", "vpn-binding", "vpn-id", "deleteKey",AAIProperties.AAI_URI, "/network/vpn-bindings/vpn-binding/deleteKey").as("v3" )
		.addV("aai-node-type", "route-target", "global-route-target", "deleteTargetKey", "route-target-role", "deleteRoleKey", "linked", true, AAIProperties.AAI_URI, "/network/vpn-bindings/vpn-binding/deleteKey/route-targets/route-target/deleteTargetKey/deleteRoleKey")
				.addOutE("org.onap.relationships.inventory.BelongsTo", "v3", EdgeProperty.CONTAINS.toString(), true)
		.addV("aai-node-type", "vpn-binding", "vpn-id", "getKey", AAIProperties.AAI_URI, "/network/vpn-bindings/vpn-binding/getKey").as("v4")
		.addV("aai-node-type", "route-target", "global-route-target", "getTargetKey", "route-target-role", "getRoleKey", "linked", true, AAIProperties.AAI_URI, "/network/vpn-bindings/vpn-binding/getKey/route-targets/route-target/getTargetKeyNoLink/getRoleKeyNoLink")
				.addOutE("org.onap.relationships.inventory.BelongsTo", "v4", EdgeProperty.CONTAINS.toString(), true)
		.addV("aai-node-type", "vpn-binding", "vpn-id", "getKeyNoLink", AAIProperties.AAI_URI, "/network/vpn-bindings/vpn-binding/getKeyNoLink").as("v5")
		.addV("aai-node-type", "route-target", "global-route-target", "getTargetKeyNoLink", "route-target-role", "getRoleKeyNoLink", AAIProperties.AAI_URI, "/network/vpn-bindings/vpn-binding/getKeyNoLink/route-targets/route-target/getTargetKeyNoLink/getRoleKeyNoLink")
				.addOutE("org.onap.relationships.inventory.BelongsTo", "v5", EdgeProperty.CONTAINS.toString(), true)
		.next();
		graph.tx().commit();

		/*Commented for SysOut issues
		 */
		//graph.traversal().V().has("aai-uri","/network/vpn-bindings/vpn-binding/deleteKey").properties().forEachRemaining(p->System.out.println(p.key() +" : " + p.value()));
		 
	}
	
	@AfterClass
	public static void tearDown() {
		graph.tx().rollback();
		graph.close();
	}
	
	@Before
	public void initMock() {
		loader = loaderFactory.createLoaderForVersion(introspectorFactoryType, schemaVersions.getDefaultVersion());
		MockitoAnnotations.initMocks(this);
		dbEngine = new JanusGraphDBEngine(
				queryStyle,
				type,
				loader);
	}
	
	@Test
	public void verifyCreationOfVertex() throws URISyntaxException, AAIException, UnsupportedEncodingException, IllegalAccessException, IllegalArgumentException, InvocationTargetException, SecurityException, InstantiationException, NoSuchMethodException, MalformedURLException {
		
		final Loader loader = loaderFactory.createLoaderForVersion(ModelType.MOXY, schemaVersions.getDepthVersion());
		final Introspector obj = loader.introspectorFromName("vpn-binding");
		obj.setValue("vpn-id", "addKey");
		obj.setValue("global-route-target", "key1");
		obj.setValue("route-target-role", "key2");
		TransactionalGraphEngine spy = spy(dbEngine);
		TransactionalGraphEngine.Admin adminSpy = spy(dbEngine.asAdmin());
		Graph g = graph.newTransaction();
		GraphTraversalSource traversal = g.traversal();
//		Graph g = graph.newTransaction();
//		GraphTraversalSource traversal = g;
	//	System.out.println("Begin method inventory:");
		Iterator<Vertex> vertexItr = traversal.V();
   		while( vertexItr != null && vertexItr.hasNext() ){
   			Vertex v = vertexItr.next();
   		//	System.out.println("\nnodeType="+v.<String>property("aai-node-type"));
   			for(String key: v.keys()) {
   			//	System.out.println("label="+v.label()+";key= "+key+";value= "+v.value(key)+";id= "+v.id());
   			}
   			Direction d = null;
   			Iterator<Edge> edgeItr = v.edges(Direction.BOTH);
   	   		while( edgeItr != null && edgeItr.hasNext() ){
   	   			Edge e = edgeItr.next();
   				//System.out.println("outV="+e.outVertex().property(AAIProperties.NODE_TYPE)+"/"+e.outVertex().id()+";inV= "+e.inVertex().property(AAIProperties.NODE_TYPE)+"/"+e.inVertex().id());
   			}
   		}
   		//System.out.println("End method inventory:");
		when(spy.asAdmin()).thenReturn(adminSpy);
		when(adminSpy.getTraversalSource()).thenReturn(traversal);
		when(spy.tx()).thenReturn(g);
		when(self.<String>property(AAIProperties.AAI_URI)).thenReturn(prop);
		when(prop.orElse(null)).thenReturn(obj.getURI());
		DBSerializer serializer = new DBSerializer(schemaVersions.getDefaultVersion(), spy, introspectorFactoryType, "AAI_TEST");
		SideEffectRunner runner = new SideEffectRunner
				.Builder(spy, serializer).addSideEffect(DataLinkWriter.class).build();
		
		runner.execute(obj, self);

		assertEquals("route-target vertex found", true, traversal.V()
				.has(AAIProperties.NODE_TYPE, "route-target").has("global-route-target", "key1").has("route-target-role", "key2").has("linked", true).hasNext());
		g.tx().rollback();
		
	}
	
	@Test
	public void verifyModificationOfVertex() throws URISyntaxException, AAIException, UnsupportedEncodingException, IllegalAccessException, IllegalArgumentException, InvocationTargetException, SecurityException, InstantiationException, NoSuchMethodException, MalformedURLException {
		
		final Loader loader = loaderFactory.createLoaderForVersion(ModelType.MOXY, schemaVersions.getDepthVersion());
		final Introspector obj = loader.introspectorFromName("vpn-binding");
		obj.setValue("vpn-id", "modifyKey");
		obj.setValue("global-route-target", "modifyTargetKey2");
		obj.setValue("route-target-role", "modifyRoleKey2");
		TransactionalGraphEngine spy = spy(dbEngine);
		TransactionalGraphEngine.Admin adminSpy = spy(dbEngine.asAdmin());
//		Graph g = graph.newTransaction();
//		GraphTraversalSource traversal = g;
		Graph g = graph.newTransaction();
		GraphTraversalSource traversal = g.traversal();
		Iterator<Vertex> vertexItr = traversal.V();
   		while( vertexItr != null && vertexItr.hasNext() ){
   			Vertex v = vertexItr.next();
   			//System.out.println("\nnodeType="+v.<String>property("aai-node-type"));
   			for(String key: v.keys()) {
   				//System.out.println("label="+v.label()+";key= "+key+";value= "+v.value(key)+"/"+v.id());
   			}
   			Direction d = null;
   			Iterator<Edge> edgeItr = v.edges(Direction.BOTH);
   	   		while( edgeItr != null && edgeItr.hasNext() ){
   	   			Edge e = edgeItr.next();
   			//	System.out.println("outV="+e.outVertex().property(AAIProperties.NODE_TYPE)+"/"+e.outVertex().id()+";inV= "+e.inVertex().property(AAIProperties.NODE_TYPE)+"/"+e.inVertex().id());
   			}
   		}
   	//	System.out.println("End method inventory:");

		when(spy.asAdmin()).thenReturn(adminSpy);
		when(adminSpy.getTraversalSource()).thenReturn(traversal);
//		when(spy.tx()).thenReturn(graph);
		when(spy.tx()).thenReturn(g);
		when(self.<String>property(AAIProperties.AAI_URI)).thenReturn(prop);
		when(prop.orElse(null)).thenReturn(obj.getURI());
		DBSerializer serializer = new DBSerializer(schemaVersions.getDefaultVersion(), spy, introspectorFactoryType, "AAI_TEST");
		SideEffectRunner runner = new SideEffectRunner
				.Builder(spy, serializer).addSideEffect(DataLinkWriter.class).build();
		//System.out.println("Traversal Source: "+traversal.toString());
		vertexItr = traversal.V();
	//	System.out.println("Begin method inventory:");
   		while( vertexItr != null && vertexItr.hasNext() ){
   			Vertex v = vertexItr.next();
   			//System.out.println("\nnodeType="+v.<String>property("aai-node-type"));
   			for(String key: v.keys()) {
   			//	System.out.println("label="+v.label()+";key= "+key+";value= "+v.value(key)+"/"+v.id());
   			}
   			Iterator<Edge> edgeItr = v.edges(Direction.BOTH);
   	   		while( edgeItr != null && edgeItr.hasNext() ){
   	   			Edge e = edgeItr.next();
   				//System.out.println("outV="+e.outVertex().property(AAIProperties.NODE_TYPE)+"/"+e.outVertex().id()+";inV= "+e.inVertex().property(AAIProperties.NODE_TYPE)+"/"+e.inVertex().id());
   			}
   		}
   		//System.out.println("End method inventory:");
		try {
		runner.execute(obj, self);
		} catch(Exception e) {

		}
//		runner.execute(obj, self);
		//System.out.println("=================\n");
		vertexItr = traversal.V();
   		while( vertexItr != null && vertexItr.hasNext() ){
   			Vertex v = vertexItr.next();
   			//System.out.println("\nnodeType="+v.<String>property("aai-node-type"));
   			for(String key: v.keys()) {
   			//	System.out.println("label="+v.label()+";key= "+key+";value= "+v.value(key)+"/"+v.id());
   			}
   			Iterator<Edge> edgeItr = v.edges(Direction.BOTH);
   	   		while( edgeItr != null && edgeItr.hasNext() ){
   	   			Edge e = edgeItr.next();
   			//	System.out.println("outV="+e.outVertex().property(AAIProperties.NODE_TYPE)+"/"+e.outVertex().id()+";inV= "+e.inVertex().property(AAIProperties.NODE_TYPE)+"/"+e.inVertex().id());
   			}
   		}
		assertThat("new route-target vertex found with/or without link", traversal.V()
				.has(AAIProperties.NODE_TYPE, "route-target").has("global-route-target", "modifyTargetKey2").has("route-target-role", "modifyRoleKey2").hasNext(),is(true));
		assertThat("new route-target vertex found", traversal.V()
				.has(AAIProperties.NODE_TYPE, "route-target").has("global-route-target", "modifyTargetKey2").has("route-target-role", "modifyRoleKey2").has("linked", true).hasNext(),is(true));
		assertThat("previous link removed", traversal.V()
				.has(AAIProperties.NODE_TYPE, "route-target").has("global-route-target", "modifyTargetKey").has("route-target-role", "modifyRoleKey").has("linked").hasNext(),is(not(true)));
		assertThat("previous vertex still exists", traversal.V()
				.has(AAIProperties.NODE_TYPE, "route-target").has("global-route-target", "modifyTargetKey").has("route-target-role", "modifyRoleKey").hasNext(),is(true));
		g.tx().rollback();
		
	}
	
	@Test
	public void verifyDeleteOfVertex() throws URISyntaxException, AAIException, UnsupportedEncodingException, IllegalAccessException, IllegalArgumentException, InvocationTargetException, SecurityException, InstantiationException, NoSuchMethodException, MalformedURLException {
		
		final Loader loader = loaderFactory.createLoaderForVersion(ModelType.MOXY, schemaVersions.getDepthVersion());
		final Introspector obj = loader.introspectorFromName("vpn-binding");
		obj.setValue("vpn-id", "deleteKey");
		TransactionalGraphEngine spy = spy(dbEngine);
		TransactionalGraphEngine.Admin adminSpy = spy(dbEngine.asAdmin());
		Graph g = graph.newTransaction();
		GraphTraversalSource traversal = g.traversal();
		when(spy.asAdmin()).thenReturn(adminSpy);
		when(adminSpy.getTraversalSource()).thenReturn(traversal);
		when(adminSpy.getReadOnlyTraversalSource()).thenReturn(traversal);
		when(spy.tx()).thenReturn(g);
		when(self.<String>property(AAIProperties.AAI_URI)).thenReturn(prop);
		when(prop.orElse(null)).thenReturn(obj.getURI());
		DBSerializer serializer = new DBSerializer(schemaVersions.getDefaultVersion(), spy, introspectorFactoryType, "AAI_TEST");
		SideEffectRunner runner = new SideEffectRunner
				.Builder(spy, serializer).addSideEffect(DataLinkWriter.class).build();
		
		runner.execute(obj, self);

		assertEquals("route-target vertex not found", false, traversal.V()
				.has(AAIProperties.NODE_TYPE, "route-target")
				.has("global-route-target", "deleteTargetKey")
				.has("route-target-role", "deleteRoleKey")
				.has("linked", true)
				.hasNext()
		);

		g.tx().rollback();
		
	}
	
	@Test
	public void verifyPropertyPopulation() throws URISyntaxException, AAIException, UnsupportedEncodingException, IllegalAccessException, IllegalArgumentException, InvocationTargetException, SecurityException, InstantiationException, NoSuchMethodException, MalformedURLException {
		
		final Loader loader = loaderFactory.createLoaderForVersion(ModelType.MOXY, schemaVersions.getDepthVersion());
		final Introspector obj = loader.introspectorFromName("vpn-binding");
		obj.setValue("vpn-id", "getKey");
		TransactionalGraphEngine spy = spy(dbEngine);
		TransactionalGraphEngine.Admin adminSpy = spy(dbEngine.asAdmin());
		Graph g = graph.newTransaction();
		GraphTraversalSource traversal = g.traversal();
		when(spy.asAdmin()).thenReturn(adminSpy);
		when(adminSpy.getTraversalSource()).thenReturn(traversal);
		when(spy.tx()).thenReturn(g);
		when(self.<String>property(AAIProperties.AAI_URI)).thenReturn(prop);
		when(prop.orElse(null)).thenReturn(obj.getURI());
		DBSerializer serializer = new DBSerializer(schemaVersions.getDefaultVersion(), spy, introspectorFactoryType, "AAI_TEST");
		SideEffectRunner runner = new SideEffectRunner
				.Builder(spy, serializer).addSideEffect(DataLinkReader.class).build();
		
		runner.execute(obj, self);

		assertEquals("both properties have been populated in target object", true, obj.getValue("global-route-target").equals("getTargetKey") && obj.getValue("route-target-role").equals("getRoleKey"));
		g.tx().rollback();
		
	}
	
	@Test
	public void verifyPropertyPopulationWithV10OnlyPut() throws URISyntaxException, AAIException, UnsupportedEncodingException, IllegalAccessException, IllegalArgumentException, InvocationTargetException, SecurityException, InstantiationException, NoSuchMethodException, MalformedURLException {
		final Introspector obj = loader.introspectorFromName("vpn-binding");
		obj.setValue("vpn-id", "getKeyNoLink");
		final Introspector routeTargets = loader.introspectorFromName("route-targets");
		obj.setValue("route-targets", routeTargets.getUnderlyingObject());
		List<Object> targets = routeTargets.getValue("route-target");
		final Introspector routeTargetOne = loader.introspectorFromName("route-target");
		routeTargetOne.setValue("global-route-target", "getTargetKeyNoLink");
		routeTargetOne.setValue("route-target-role", "getRoleKeyNoLink");
		targets.add(routeTargetOne.getUnderlyingObject());
		final Introspector routeTargetTwo = loader.introspectorFromName("route-target");
		routeTargetTwo.setValue("global-route-target", "getTargetKeyNoLink2");
		routeTargetTwo.setValue("route-target-role", "getRoleKeyNoLink2");
		targets.add(routeTargetTwo.getUnderlyingObject());
		TransactionalGraphEngine spy = spy(dbEngine);
		TransactionalGraphEngine.Admin adminSpy = spy(dbEngine.asAdmin());
		Graph g = graph.newTransaction();
		GraphTraversalSource traversal = g.traversal();
		when(spy.tx()).thenReturn(g);
		when(spy.asAdmin()).thenReturn(adminSpy);
		when(adminSpy.getTraversalSource()).thenReturn(traversal);
		when(spy.tx()).thenReturn(g);
		when(parser.isDependent()).thenReturn(false);
		when(self.<String>property(AAIProperties.AAI_URI)).thenReturn(prop);
		when(prop.orElse(null)).thenReturn(obj.getURI());
		DBSerializer serializer = new DBSerializer(schemaVersions.getDefaultVersion(), spy, introspectorFactoryType, "AAI_TEST");
		Vertex v = serializer.createNewVertex(obj);
		serializer.serializeToDb(obj, v, parser, obj.getURI(), "testing");
		Vertex routeTargetOneV = traversal.V().has("global-route-target", "getTargetKeyNoLink").next();
		Vertex routeTargetTwoV = traversal.V().has("global-route-target", "getTargetKeyNoLink2").next();

		assertEquals("first route target put has linked", true, routeTargetOneV.property(AAIProperties.LINKED).orElse(false));
		assertEquals("second route target put does not have linked", false, routeTargetTwoV.property(AAIProperties.LINKED).orElse(false));

		g.tx().rollback();
		
	}
}