/*-
 * ============LICENSE_START=======================================================
 * openECOMP : SDN-C
 * ================================================================================
 * 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.sdnc.vnfapi;

import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import org.mockito.Mock;
import org.mockito.Mockito;
import org.mockito.MockitoAnnotations;
import org.onap.ccsdk.sli.core.sli.SvcLogicException;
import org.onap.sdnc.vnfapi.util.DataBrokerUtil;
import org.onap.sdnc.vnfapi.util.PropBuilder;
import org.onap.sdnc.vnfapi.util.VNFSDNSvcLogicServiceClientMockUtil;
import org.opendaylight.controller.md.sal.binding.api.DataBroker;
import org.opendaylight.controller.md.sal.binding.api.NotificationPublishService;
import org.opendaylight.controller.md.sal.binding.test.AbstractConcurrentDataBrokerTest;
import org.opendaylight.controller.sal.binding.api.RpcProviderRegistry;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.opendaylight.yangtools.yang.common.RpcResult;
import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.VnfInstanceTopologyOperationInput;
import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.VnfInstanceTopologyOperationOutput;
import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.VnfInstanceTopologyOperationInputBuilder;
import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.vnf.instance.request.information.VnfInstanceRequestInformation;
import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.vnf.instance.request.information.VnfInstanceRequestInformationBuilder;
import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.vnf.instance.service.data.VnfInstanceServiceDataBuilder;

import java.util.Properties;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;


public class VnfApiProviderTest extends AbstractConcurrentDataBrokerTest {
    private static final String INVALID_INPUT = "invalid input, null or empty vnf-instance-id";
    private static final String NO_SERVICE_LOGIC = "No service logic active for VNF-API: \'vnf-instance-topology-operation\'";
    private static final String VIID = "viid";
    private static final String PRELOAD_NAME = "preloadName";
    private static final String PRELOAD_TYPE = "preloadType";
    private static final String ERROR_CODE = "error-code";
    private static final String ERROR_MESSAGE = "error-message";
    private static final String ACK_FINAL = "ack-final";

    protected VnfApiProvider vnfapiProvider;
    protected DataBroker dataBroker;
    protected @Mock NotificationPublishService mockNotificationPublishService;
    protected @Mock RpcProviderRegistry mockRpcProviderRegistry;
    protected @Mock VNFSDNSvcLogicServiceClient mockVNFSDNSvcLogicServiceClient;
    protected static final Logger LOG = LoggerFactory.getLogger(VnfApiProvider.class);

    protected DataBrokerUtil db;
    protected VNFSDNSvcLogicServiceClientMockUtil svcClient;


    @Before
    public void setUp() throws Exception {
        MockitoAnnotations.initMocks(this);
        svcClient = new VNFSDNSvcLogicServiceClientMockUtil(mockVNFSDNSvcLogicServiceClient);
        dataBroker = getDataBroker();
        db = new DataBrokerUtil(dataBroker);
         try {
            vnfapiProvider = new VnfApiProvider(
                    dataBroker,
                    mockNotificationPublishService,
                    mockRpcProviderRegistry,
                    mockVNFSDNSvcLogicServiceClient
            );
        } catch (Exception e) {
            LOG.error("Caught exception on setUp", e);
            throw e;
        }
    }


    public static PropBuilder prop(){
        return (new PropBuilder());
    }

    @Test
    public void vnfInstanceTopologyOperationInputIsNull() throws Exception {
        VnfInstanceTopologyOperationInput input = null;
        checkVnfInstanceTopologyOperation(input, "403", INVALID_INPUT);
    }


    @Test
    public void vnfInstanceTopologyOperationInput_VnfInstanceRequestInformationIsNull() throws Exception {
        VnfInstanceTopologyOperationInputBuilder builder = new VnfInstanceTopologyOperationInputBuilder();
        builder.setVnfInstanceRequestInformation(null);
        VnfInstanceTopologyOperationInput input = builder.build();

        checkVnfInstanceTopologyOperation(input, "403", INVALID_INPUT);
    }

    @Test
    public void vnfInstanceTopologyOperationInput_getVnfInstanceRequestInformationVnfInstanceIdIsNull() throws Exception {
        VnfInstanceTopologyOperationInputBuilder builder = new VnfInstanceTopologyOperationInputBuilder();
        builder.setVnfInstanceRequestInformation(createVnfInstanceRequestInformation(null));
        VnfInstanceTopologyOperationInput input = builder.build();

        checkVnfInstanceTopologyOperation(input, "403", INVALID_INPUT);
    }

    @Test
    public void vnfInstanceTopologyOperationInput_VnfInstanceRequestInformationVnfInstanceIdIsZero() throws Exception {
        VnfInstanceTopologyOperationInputBuilder builder = new VnfInstanceTopologyOperationInputBuilder();
        builder.setVnfInstanceRequestInformation(createVnfInstanceRequestInformation(""));
        VnfInstanceTopologyOperationInput input = builder.build();

        checkVnfInstanceTopologyOperation(input, "403", INVALID_INPUT);
    }

    @Test
    public void vnfInstanceTopologyOperationInput_svcLogicClientHasGrapheReturnFalse() throws Exception {
        VnfInstanceTopologyOperationInputBuilder builder = new VnfInstanceTopologyOperationInputBuilder();
        builder.setVnfInstanceRequestInformation(createVnfInstanceRequestInformation(VIID));
        VnfInstanceTopologyOperationInput input = builder.build();

        Mockito.when(mockVNFSDNSvcLogicServiceClient
                .hasGraph(Mockito.any(),Mockito.any(), Mockito.any(),Mockito.any()))
                .thenReturn(false);

        checkVnfInstanceTopologyOperation(input, "503", NO_SERVICE_LOGIC);
    }


    @Test
    public void vnfInstanceTopologyOperationInput_svcLogicClientExecuteThrowsSvcLogicException() throws Exception {
        VnfInstanceTopologyOperationInputBuilder builder = new VnfInstanceTopologyOperationInputBuilder();
        builder.setVnfInstanceRequestInformation(createVnfInstanceRequestInformation(VIID));
        VnfInstanceTopologyOperationInput input = builder.build();

        Mockito.when(mockVNFSDNSvcLogicServiceClient
                    .hasGraph(Mockito.any(),Mockito.any(), Mockito.any(),Mockito.any()))
                .thenReturn(true);
        setMockVNFSDNSvcLogicServiceClientToThrowException(SvcLogicException.class);
        checkVnfInstanceTopologyOperation(input, "500", null);
    }

    @Test
    public void vnfInstanceTopologyOperationInput_svcLogicClientExecuteThrowsException() throws Exception {
        VnfInstanceTopologyOperationInputBuilder builder = new VnfInstanceTopologyOperationInputBuilder();
        builder.setVnfInstanceRequestInformation(createVnfInstanceRequestInformation(VIID));
        VnfInstanceTopologyOperationInput input = builder.build();

        Mockito.when(mockVNFSDNSvcLogicServiceClient
                .hasGraph(Mockito.any(),Mockito.any(), Mockito.any(),Mockito.any()))
                .thenReturn(true);
        setMockVNFSDNSvcLogicServiceClientToThrowException(Exception.class);
        checkVnfInstanceTopologyOperation(input, "500", null);
    }

    private void setMockVNFSDNSvcLogicServiceClientToThrowException(Class exceptionClass) throws Exception {
        Mockito.when(mockVNFSDNSvcLogicServiceClient
                .execute(Mockito.any(),
                        Mockito.any(),
                        Mockito.any(),
                        Mockito.any(),
                        Mockito.any(VnfInstanceServiceDataBuilder.class),
                        Mockito.any()))
                .thenThrow(exceptionClass.asSubclass(Throwable.class));
    }

       @Test
    public void vnfInstanceTopologyOperationInput_svcLogicClientExecuteReturnsNotNull() throws Exception {
        VnfInstanceTopologyOperationInputBuilder builder = new VnfInstanceTopologyOperationInputBuilder();
        builder.setVnfInstanceRequestInformation(createVnfInstanceRequestInformation(VIID));
        VnfInstanceTopologyOperationInput input = builder.build();

        Properties properties = prop().set(ERROR_CODE, "500")
                .set(ERROR_MESSAGE, ERROR_MESSAGE)
                .set(ACK_FINAL, "Y")
                .build();

        Mockito.when(mockVNFSDNSvcLogicServiceClient
                .hasGraph(Mockito.any(),Mockito.any(), Mockito.any(),Mockito.any()))
                .thenReturn(true);

        Mockito.when(mockVNFSDNSvcLogicServiceClient
                    .execute(Mockito.any(),
                        Mockito.any(),
                        Mockito.any(),
                        Mockito.any(),
                        Mockito.any(VnfInstanceServiceDataBuilder.class),
                        Mockito.any()))
               .thenReturn(properties);


        checkVnfInstanceTopologyOperation(input, "500", ERROR_MESSAGE);
    }

    private VnfInstanceRequestInformation createVnfInstanceRequestInformation(String vnfInstanceId) {
        return new VnfInstanceRequestInformationBuilder()
                .setVnfInstanceId(vnfInstanceId)
                .setVnfInstanceName(PRELOAD_NAME)
                .setVnfModelId(PRELOAD_TYPE)
                .build();
    }

    private void checkVnfInstanceTopologyOperation(VnfInstanceTopologyOperationInput input,
        String expectedResponseCode, String expectedResponseMessage) throws ExecutionException, InterruptedException {

        VnfInstanceTopologyOperationOutput output = executeVnfInstanceTopologyOperation(input);
        checkVnfInstanceTopologyOperationOutput(output, expectedResponseCode, expectedResponseMessage);
    }

    private VnfInstanceTopologyOperationOutput executeVnfInstanceTopologyOperation(
            VnfInstanceTopologyOperationInput input) throws ExecutionException, InterruptedException {
        return vnfapiProvider
                .vnfInstanceTopologyOperation(input)
                .get()
                .getResult();
    }

    private void checkVnfInstanceTopologyOperationOutput(VnfInstanceTopologyOperationOutput result,
            String expectedResponseCode, String expectedResponseMessage) {

        String expectedAckFinalIndicator = "Y";

        Assert.assertEquals(result.getResponseCode(), expectedResponseCode );
        Assert.assertEquals(result.getResponseMessage(), expectedResponseMessage);
        Assert.assertEquals(result.getAckFinalIndicator(), expectedAckFinalIndicator);
    }
 }