/*-
 * ============LICENSE_START=======================================================
 * VID
 * ================================================================================
 * Copyright (C) 2017 - 2019 AT&T Intellectual Property. All rights reserved.
 * Modifications Copyright (C) 2019 Nokia.
 * ================================================================================
 * 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.vid.controller;

import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyBoolean;
import static org.mockito.ArgumentMatchers.argThat;
import static org.mockito.ArgumentMatchers.booleanThat;
import static org.mockito.BDDMockito.given;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableMultimap;
import com.google.common.collect.Lists;
import com.google.common.collect.Multimap;
import java.io.IOException;
import java.util.Map;
import java.util.UUID;
import javax.servlet.http.HttpServletRequest;
import javax.ws.rs.core.Response;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import org.mockito.junit.MockitoJUnitRunner;
import org.onap.vid.aai.AaiResponse;
import org.onap.vid.aai.AaiResponseTranslator.PortMirroringConfigData;
import org.onap.vid.aai.AaiResponseTranslator.PortMirroringConfigDataError;
import org.onap.vid.aai.AaiResponseTranslator.PortMirroringConfigDataOk;
import org.onap.vid.aai.model.AaiGetAicZone.AicZones;
import org.onap.vid.aai.model.AaiGetAicZone.Zone;
import org.onap.vid.aai.model.AaiGetPnfs.Pnf;
import org.onap.vid.aai.model.PortDetailsTranslator.PortDetails;
import org.onap.vid.aai.model.PortDetailsTranslator.PortDetailsError;
import org.onap.vid.aai.model.PortDetailsTranslator.PortDetailsOk;
import org.onap.vid.aai.util.AAIRestInterface;
import org.onap.vid.properties.Features;
import org.onap.vid.roles.Role;
import org.onap.vid.model.VersionByInvariantIdsRequest;
import org.onap.vid.roles.RoleProvider;
import org.onap.vid.roles.RoleValidator;
import org.onap.vid.services.AaiService;
import org.onap.vid.utils.SystemPropertiesWrapper;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.setup.MockMvcBuilders;
import org.togglz.core.manager.FeatureManager;

@RunWith(MockitoJUnitRunner.class)
public class AaiControllerTest {

    private static final String ID_1 = "id1";
    private static final String ID_2 = "id2";
    private final ObjectMapper objectMapper = new ObjectMapper();
    @Mock
    private AaiService aaiService;
    @Mock
    private AAIRestInterface aaiRestInterface;
    @Mock
    private RoleProvider roleProvider;
    @Mock
    private SystemPropertiesWrapper systemPropertiesWrapper;

    @Mock
    private FeatureManager featureManager;

    private MockMvc mockMvc;
    private AaiController aaiController;

    @Before
    public void setUp() {
        aaiController = new AaiController(aaiService, aaiRestInterface, roleProvider, systemPropertiesWrapper, featureManager);
        mockMvc = MockMvcBuilders.standaloneSetup(aaiController).build();
    }

    @Test
    public void getPortMirroringConfigData_givenIds_shouldReturnConfigDataMappedById() throws Exception {
        PortMirroringConfigDataOk okConfigData = new PortMirroringConfigDataOk("foo");
        PortMirroringConfigDataError errorConfigData = new PortMirroringConfigDataError("bar", "{ baz: qux }");
        Map<String, PortMirroringConfigData> expectedJson = ImmutableMap.of(
            ID_1, okConfigData,
            ID_2, errorConfigData);
        given(aaiService.getPortMirroringConfigData(ID_1)).willReturn(okConfigData);
        given(aaiService.getPortMirroringConfigData(ID_2)).willReturn(errorConfigData);

        mockMvc
            .perform(get("/aai_getPortMirroringConfigsData")
                .param("configurationIds", ID_1, ID_2)
                .contentType(MediaType.APPLICATION_JSON)
                .accept(MediaType.APPLICATION_JSON))
            .andExpect(status().isOk())
            .andExpect(content().json(objectMapper.writeValueAsString(expectedJson)));
    }

    @Test
    public void getPortMirroringSourcePorts_givenIds_shouldReturnPortDetailsMappedById() throws Exception {
        PortDetailsOk portDetailsOk = new PortDetailsOk("foo", "testInterface", true);
        PortDetailsError portDetailsError = new PortDetailsError("bar", "{ baz: qux }");
        Multimap<String, PortDetails> expectedJson = ImmutableMultimap.of(
            ID_1, portDetailsOk,
            ID_2, portDetailsError);
        given(aaiService.getPortMirroringSourcePorts(ID_1)).willReturn(Lists.newArrayList(portDetailsOk));
        given(aaiService.getPortMirroringSourcePorts(ID_2)).willReturn(Lists.newArrayList(portDetailsError));

        mockMvc
            .perform(get("/aai_getPortMirroringSourcePorts")
                .param("configurationIds", ID_1, ID_2)
                .contentType(MediaType.APPLICATION_JSON)
                .accept(MediaType.APPLICATION_JSON))
            .andExpect(status().isOk())
            .andExpect(content().json(objectMapper.writeValueAsString(expectedJson.asMap())));
    }

    @Test
    public void getNodeTemplateInstances_givenParams_shouldReturnCorrectResponse() throws Exception {
        String globalCustomerId = "testCustomerId";
        String serviceType = "testServiceType";
        String modelVersionId = UUID.nameUUIDFromBytes("modelVersionId".getBytes()).toString();
        String modelInvariantId = UUID.nameUUIDFromBytes("modelInvariantId".getBytes()).toString();
        String cloudRegion = "testRegion";
        String urlTemplate = "/aai_get_vnf_instances/{globalCustomerId}/{serviceType}/{modelVersionId}/{modelInvariantId}/{cloudRegion}";
        String expectedResponseBody = "myResponse";
        AaiResponse<String> aaiResponse = new AaiResponse<>(expectedResponseBody, "", HttpStatus.OK.value());
        given(aaiService
            .getNodeTemplateInstances(globalCustomerId, serviceType, modelVersionId, modelInvariantId, cloudRegion))
            .willReturn(aaiResponse);

        mockMvc
            .perform(get(urlTemplate, globalCustomerId, serviceType, modelVersionId, modelInvariantId, cloudRegion)
                .contentType(MediaType.APPLICATION_JSON)
                .accept(MediaType.APPLICATION_JSON))
            .andExpect(status().isOk())
            .andExpect(content().string(expectedResponseBody));
    }

    @Test
    public void getAicZones_shouldReturnAaiZones_whenAaiHttpStatusIsOK() throws Exception {
        AicZones aicZones = new AicZones(ImmutableList.of(new Zone("TEST_ZONE_ID", "TEST_ZONE_NAME")));
        given(aaiService.getAaiZones()).willReturn(new AaiResponse(aicZones, "", HttpStatus.OK.value()));

        mockMvc.perform(get("/aai_get_aic_zones")
            .contentType(MediaType.APPLICATION_JSON)
            .accept(MediaType.APPLICATION_JSON))
            .andExpect(status().isOk())
            .andExpect(content().json(objectMapper.writeValueAsString(aicZones)));
    }

    @Test
    public void getAicZones_shouldReturnErrorResponse_whenAaiHttpStatusOtherThanOK() throws Exception {
        String expectedErrorMessage = "Calling AAI Failed";
        given(aaiService.getAaiZones())
            .willReturn(new AaiResponse(null, expectedErrorMessage, HttpStatus.INTERNAL_SERVER_ERROR.value()));

        mockMvc.perform(get("/aai_get_aic_zones")
            .contentType(MediaType.APPLICATION_JSON)
            .accept(MediaType.APPLICATION_JSON))
            .andExpect(status().isInternalServerError())
            .andExpect(content().string(expectedErrorMessage));
    }

    @Test
    public void getSpecificPnf_shouldReturnPnfObjectForPnfId() throws Exception {
        String pnfId = "MyPnfId";
        Pnf pnf = Pnf.builder()
            .withPnfId(pnfId)
            .withPnfName("TestPnf")
            .withPnfName2("pnfName2")
            .withPnfName2Source("pnfNameSource")
            .withEquipModel("model")
            .withEquipType("type")
            .withEquipVendor("vendor")
            .build();
        AaiResponse<Pnf> aaiResponse = new AaiResponse<>(pnf, "", HttpStatus.OK.value());
        given(aaiService.getSpecificPnf(pnfId)).willReturn(aaiResponse);

        mockMvc.perform(get("/aai_get_pnfs/pnf/{pnf_id}", pnfId)
            .contentType(MediaType.APPLICATION_JSON)
            .accept(MediaType.APPLICATION_JSON))
            .andExpect(status().isOk())
            .andExpect(content().json(objectMapper.writeValueAsString(pnf)));
    }

    @Test
    public void getSpecificPnf_shouldHandleAAIServiceException() throws Exception {
        String pnfId = "MyPnfId";
        String expectedErrorMessage = "AAI Service Error";
        given(aaiService.getSpecificPnf(pnfId)).willThrow(new RuntimeException(expectedErrorMessage));

        mockMvc.perform(get("/aai_get_pnfs/pnf/{pnf_id}", pnfId)
            .contentType(MediaType.APPLICATION_JSON)
            .accept(MediaType.APPLICATION_JSON))
            .andExpect(status().isInternalServerError())
            .andExpect(content().string(expectedErrorMessage));
    }

    public void getPNFInstances_shouldReturnOKResponseFromAAIService() throws Exception {
        String globalCustomerId = "testCustomerId";
        String serviceType = "testServiceType";
        String modelVersionId = UUID.nameUUIDFromBytes("modelVersionId".getBytes()).toString();
        String modelInvariantId = UUID.nameUUIDFromBytes("modelInvariantId".getBytes()).toString();
        String cloudRegion = "testRegion";
        String equipVendor = "testVendor";
        String equipModel = "model123";
        String urlTemplate = "/aai_get_pnf_instances/{globalCustomerId}/{serviceType}/{modelVersionId}/{modelInvariantId}/{cloudRegion}/{equipVendor}/{equipModel}";
        String expectedResponseBody = "myResponse";
        AaiResponse<String> aaiResponse = new AaiResponse<>(expectedResponseBody, "", HttpStatus.OK.value());

        given(aaiService
            .getPNFData(globalCustomerId, serviceType, modelVersionId, modelInvariantId, cloudRegion, equipVendor,
                equipModel)).willReturn(aaiResponse);

        mockMvc.perform(
            get(urlTemplate, globalCustomerId, serviceType, modelVersionId,
                modelInvariantId, cloudRegion, equipVendor, equipModel)
                .contentType(MediaType.APPLICATION_JSON)
                .accept(MediaType.APPLICATION_JSON))
            .andExpect(status().isOk())
            .andExpect(content().string(expectedResponseBody));
    }

    @Test
    public void getVersionByInvariantId_shouldReturnOKResponse() throws Exception {
        String expectedResponse = "OKResponse";
        VersionByInvariantIdsRequest request = new VersionByInvariantIdsRequest();
        request.versions = ImmutableList.of("ver1", "ver2");
        Response response = mock(Response.class);
        given(response.readEntity(String.class)).willReturn(expectedResponse);
        given(aaiService
            .getVersionByInvariantId(request.versions)).willReturn(response);

        mockMvc.perform(
            post("/aai_get_version_by_invariant_id")
                .content(new ObjectMapper().writeValueAsString(request))
                .contentType(MediaType.APPLICATION_JSON)
                .accept(MediaType.APPLICATION_JSON))
            .andExpect(status().isOk())
            .andExpect(content().string(expectedResponse));
    }

    @Test
    public void getSubscriberDetailsOmitServiceInstances_reduceDepthEnabledAndOmitQueryParam() throws IOException {
        getSubscriberDetailsOmitServiceInstances("some subscriber id",
                true, true, true);
    }

    @Test
    public void getSubscriberDetailsOmitServiceInstances_reduceDepthDisabledAndOmitQueryParam() throws IOException {
        getSubscriberDetailsOmitServiceInstances("another-subscriber-id-123",
                false, true, false);
    }

    @Test
    public void getSubscriberDetailsOmitServiceInstances_reduceDepthDisabled() throws IOException {
        getSubscriberDetailsOmitServiceInstances("123-456-789-123-345-567-6",
                false,  false,  false);
    }

    @Test
    public void getSubscriberDetailsOmitServiceInstances_reduceDepthEnabled() throws IOException {
        getSubscriberDetailsOmitServiceInstances("0000000000000000000000000",
                true, false,  false);
    }

    private void getSubscriberDetailsOmitServiceInstances(String subscriberId, boolean isFlag1906AaiSubDetailsReduceDepthEnabled,
        boolean omitServiceInstancesQueryParam, boolean omitServiceInstancesExpectedGetSubscriberDataParam) throws IOException {
        when(featureManager.isActive(Features.FLAG_1906_AAI_SUB_DETAILS_REDUCE_DEPTH)).thenReturn(isFlag1906AaiSubDetailsReduceDepthEnabled);
        HttpServletRequest request = mock(HttpServletRequest.class);
        when(roleProvider.getUserRoles(request)).thenReturn(ImmutableList.of(mock(Role.class), mock(Role.class)));
        AaiResponse subscriberData = mock(AaiResponse.class);
        when(subscriberData.getT()).thenReturn(null);
        when(subscriberData.getHttpCode()).thenReturn(200);
        when(aaiService.getSubscriberData(any(), any(), anyBoolean())).thenReturn(subscriberData);
        aaiController.getSubscriberDetails(request, subscriberId, omitServiceInstancesQueryParam);
        verify(aaiService).getSubscriberData(argThat(subscriberId::equals), any(RoleValidator.class), booleanThat(b -> omitServiceInstancesExpectedGetSubscriberDataParam == b));
    }
}