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/*-
 * ============LICENSE_START=======================================================
 * ONAP - SO
 * ================================================================================
 * Copyright (C) 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.aaiclient.client.aai;

import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.Matchers.greaterThan;
import static org.junit.Assert.assertThat;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.eq;
import static org.mockito.Mockito.doReturn;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.spy;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.HashMap;
import java.util.Map;
import java.util.Optional;
import javax.ws.rs.core.GenericType;
import org.json.JSONException;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Spy;
import org.mockito.junit.MockitoJUnitRunner;
import org.onap.aai.domain.yang.Pserver;
import org.onap.aai.domain.yang.v9.Complex;
import org.onap.aaiclient.client.aai.entities.singletransaction.SingleTransactionRequest;
import org.onap.aaiclient.client.aai.entities.singletransaction.SingleTransactionResponse;
import org.onap.aaiclient.client.aai.entities.uri.AAIResourceUri;
import org.onap.aaiclient.client.aai.entities.uri.AAIUriFactory;
import org.onap.aaiclient.client.generated.fluentbuilders.AAIFluentTypeBuilder;
import org.onap.aaiclient.client.graphinventory.GraphInventoryPatchConverter;
import org.skyscreamer.jsonassert.JSONAssert;
import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;

@RunWith(MockitoJUnitRunner.class)
public class AAISingleTransactionClientTest {

    private final static String AAI_JSON_FILE_LOCATION = "src/test/resources/__files/aai/singletransaction/";
    AAIResourceUri uriA =
            AAIUriFactory.createResourceUri(AAIFluentTypeBuilder.cloudInfrastructure().pserver("pserver-hostname"));
    AAIResourceUri uriB =
            AAIUriFactory.createResourceUri(AAIFluentTypeBuilder.cloudInfrastructure().complex("my-complex"));
    AAIResourceUri uriC =
            AAIUriFactory.createResourceUri(AAIFluentTypeBuilder.cloudInfrastructure().complex("my-complex2"));

    ObjectMapper mapper;

    public AAIClient client = new AAIClient();

    @Spy
    public AAIResourcesClient aaiClient = new AAIResourcesClient();

    @Before
    public void before() throws JsonParseException, JsonMappingException, IOException {
        mapper = new AAICommonObjectMapperProvider().getMapper();
        mapper.enable(SerializationFeature.INDENT_OUTPUT);
    }

    @Test
    public void testRequest() throws JSONException, IOException {
        Pserver pserver = new Pserver();
        pserver.setHostname("pserver-hostname");
        pserver.setFqdn("pserver-bulk-process-single-transactions-multiple-actions-1-fqdn");
        Pserver pserver2 = new Pserver();
        pserver2.setFqdn("patched-fqdn");
        Complex complex = new Complex();
        complex.setCity("my-city");
        Map<String, Object> map = new HashMap<>();
        map.put("resource-version", "1234");
        doReturn(Optional.of(map)).when(aaiClient).get(any(GenericType.class), eq(uriC));
        AAISingleTransactionClient singleTransaction = aaiClient.beginSingleTransaction().create(uriA, pserver)
                .update(uriA, pserver2).create(uriB, complex).delete(uriC);

        SingleTransactionRequest actual = singleTransaction.getRequest();

        SingleTransactionRequest expected =
                mapper.readValue(this.getJson("sample-request.json"), SingleTransactionRequest.class);

        JSONAssert.assertEquals(mapper.writeValueAsString(expected), mapper.writeValueAsString(actual), false);
    }

    @Test
    public void testFailure() throws IOException {
        AAISingleTransactionClient singleTransaction = aaiClient.beginSingleTransaction();
        SingleTransactionResponse expected =
                mapper.readValue(this.getJson("sample-response-failure.json"), SingleTransactionResponse.class);
        Optional<String> errorMessage = singleTransaction.locateErrorMessages(expected);

        assertThat(expected.getOperationResponses().size(), greaterThan(0));
        assertThat(errorMessage.isPresent(), equalTo(true));

    }

    @Test
    public void testSuccessResponse() throws IOException {
        AAISingleTransactionClient singleTransaction = aaiClient.beginSingleTransaction();
        SingleTransactionResponse expected =
                mapper.readValue(this.getJson("sample-response.json"), SingleTransactionResponse.class);
        Optional<String> errorMessage = singleTransaction.locateErrorMessages(expected);

        assertThat(expected.getOperationResponses().size(), greaterThan(0));
        assertThat(errorMessage.isPresent(), equalTo(false));

    }

    @Test
    public void confirmPatchFormat() {
        AAISingleTransactionClient singleTransaction = spy(new AAISingleTransactionClient(aaiClient, client));
        GraphInventoryPatchConverter mock = mock(GraphInventoryPatchConverter.class);
        doReturn(mock).when(singleTransaction).getPatchConverter();
        singleTransaction.update(uriA, "{}");
        verify(mock, times(1)).convertPatchFormat(any());
    }

    private String getJson(String filename) throws IOException {
        return new String(Files.readAllBytes(Paths.get(AAI_JSON_FILE_LOCATION + filename)));
    }

}