/*-
 * ============LICENSE_START=======================================================
 * ONAP - SO
 * ================================================================================
 * 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.onap.so.client.aai;

import static org.junit.Assert.assertEquals;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.eq;
import static org.mockito.ArgumentMatchers.isA;
import static org.mockito.Mockito.doReturn;
import static org.mockito.Mockito.spy;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.Arrays;
import java.util.List;
import java.util.Map;

import javax.ws.rs.core.GenericType;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.InjectMocks;
import org.mockito.Mock;
import org.mockito.Spy;
import org.mockito.junit.MockitoJUnitRunner;
import org.onap.aai.domain.yang.Complex;
import org.onap.so.client.RestClient;
import org.onap.so.client.aai.entities.AAIResultWrapper;
import org.onap.so.client.aai.entities.CustomQuery;
import org.onap.so.client.aai.entities.Results;
import org.onap.so.client.aai.entities.uri.AAIResourceUri;
import org.onap.so.client.aai.entities.uri.AAIUri;
import org.onap.so.client.aai.entities.uri.AAIUriFactory;
import org.onap.so.client.graphinventory.Format;
import org.onap.so.client.graphinventory.GraphInventoryClient;
import org.onap.so.client.graphinventory.GraphInventorySubgraphType;
import org.onap.so.client.graphinventory.entities.Pathed;
import org.onap.so.client.graphinventory.entities.ResourceAndUrl;

import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;


@RunWith(MockitoJUnitRunner.class) 
public class AAIQueryClientTest {
	
	@Mock
	private RestClient restClient;
	
	@Mock
	private GraphInventoryClient client;
	
	@InjectMocks
	@Spy
	private AAIQueryClient aaiQueryClient = new AAIQueryClient();
	
	private String AAI_JSON_FILE_LOCATION = "src/test/resources/__files/aai/query/";
	
	private ObjectMapper mapper = new ObjectMapper();
	@Test
	public void testQuery() {
		List<AAIResourceUri> uris = Arrays.asList(AAIUriFactory.createResourceUri(AAIObjectType.CUSTOM_QUERY));
		
		Format format = Format.SIMPLE;
		CustomQuery query = new CustomQuery(uris);
		
		doReturn(restClient).when(client).createClient(isA(AAIUri.class));
		aaiQueryClient.query(format, query);
		verify(client, times(1)).createClient(AAIUriFactory.createResourceUri(AAIObjectType.CUSTOM_QUERY).queryParam("format", format.toString()));
		verify(restClient, times(1)).put(query, String.class);
	}
	
	@Test
	public void testCreateClient() {
		String depth = "testDepth";
		GraphInventorySubgraphType subgraph = GraphInventorySubgraphType.STAR;
		
		aaiQueryClient.depth(depth);
		aaiQueryClient.nodesOnly();
		aaiQueryClient.subgraph(subgraph);
		
		AAIUri aaiUri = spy(AAIUriFactory.createResourceUri(AAIObjectType.CUSTOM_QUERY));
		doReturn(aaiUri).when(aaiUri).clone();
		aaiQueryClient.setupQueryParams(aaiUri);
		
		verify(aaiUri, times(1)).queryParam("depth", depth);
		verify(aaiUri, times(1)).queryParam("nodesOnly", "");
		verify(aaiUri, times(1)).queryParam("subgraph", subgraph.toString());
	}
	
	@Test
	public void querySingleResourceTest() throws IOException {
		doReturn(getJson("single-query-result.json")).when(aaiQueryClient).query(eq(Format.RESOURCE_AND_URL), any(CustomQuery.class));
		List<Complex> result = aaiQueryClient.querySingleResource(new CustomQuery(Arrays.asList(AAIUriFactory.createNodesUri(AAIObjectType.COMPLEX, "test"))), Complex.class);
		assertEquals(2, result.size());
		assertEquals("complex-id-15100-jc689q2", result.get(1).getPhysicalLocationId());
	}
	
	@Test
	public void getResourceAndUrlTest() throws IOException {
		doReturn(getJson("single-query-result.json")).when(aaiQueryClient).query(eq(Format.RESOURCE_AND_URL), any(CustomQuery.class));
		List<ResourceAndUrl<AAIResultWrapper>> result = aaiQueryClient.getResourceAndUrl(new CustomQuery(Arrays.asList(AAIUriFactory.createNodesUri(AAIObjectType.COMPLEX, "test"))));
		assertEquals(2, result.size());
		
		assertEquals(1, result.get(1).getWrapper().getRelationships().get().getRelatedUris(AAIObjectType.PSERVER).size());
	}
	
	@Test
	public void querySingleTypeTest() throws IOException {
		when(client.createClient(isA(AAIUri.class))).thenReturn(restClient);
		when(restClient.put(any(Object.class), any(GenericType.class))).thenReturn(mapper.readValue(getJson("pathed-result.json"), new TypeReference<Results<Map<String, Object>>>(){}));
		
		
		List<Pathed> results = aaiQueryClient.queryPathed(new CustomQuery(Arrays.asList(AAIUriFactory.createNodesUri(AAIObjectType.COMPLEX, "test"))));

		assertEquals(2, results.size());
		assertEquals("service-instance", results.get(1).getResourceType());
	}
	
	private String getJson(String filename) throws IOException {
		 return new String(Files.readAllBytes(Paths.get(AAI_JSON_FILE_LOCATION + filename)));
	}
}