<%#
 Copyright 2013-2021 the original author or authors from the JHipster project.

 This file is part of the JHipster project, see https://www.jhipster.tech/
 for more information.

 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

      https://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.
-%>
package <%= packageName %>.web.rest;

import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
import org.hamcrest.Description;
import org.hamcrest.TypeSafeDiagnosingMatcher;
import org.hamcrest.TypeSafeMatcher;
<%_ if (!reactive) { _%>
import org.springframework.format.datetime.standard.DateTimeFormatterRegistrar;
import org.springframework.format.support.DefaultFormattingConversionService;
import org.springframework.format.support.FormattingConversionService;
<%_ } _%>
<%_ if (databaseTypeCouchbase) { _%>
import org.springframework.security.authentication.TestingAuthenticationToken;
import org.springframework.security.test.context.TestSecurityContextHolder;
<%_ } _%>

import java.io.IOException;
import java.math.BigDecimal;
import java.time.ZonedDateTime;
import java.time.format.DateTimeParseException;
<%_ if (databaseTypeSql) { _%>
import java.util.List;

import javax.persistence.EntityManager;
import javax.persistence.TypedQuery;
import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Root;
<%_ } _%>
<%_ if (searchEngineCouchbase) { _%>
import java.util.NoSuchElementException;
import java.util.concurrent.Callable;
import java.util.concurrent.TimeUnit;
import java.util.function.Function;
import java.time.Duration;
import reactor.core.publisher.Mono;
<%_ } _%>

import static org.assertj.core.api.Assertions.assertThat;

/**
 * Utility class for testing REST controllers.
 */
public final class TestUtil {

    private static final ObjectMapper mapper = createObjectMapper();
<%_ if (searchEngineCouchbase) { _%>
    private static final int MAX_ATTEMPTS = 3;
    // private static final Delay DEFAULT_DELAY = Delay.exponential(TimeUnit.SECONDS);
<%_ } _%>

    private static ObjectMapper createObjectMapper() {
        ObjectMapper mapper = new ObjectMapper();
        mapper.configure(SerializationFeature.WRITE_DURATIONS_AS_TIMESTAMPS, false);
        mapper.setSerializationInclusion(JsonInclude.Include.NON_EMPTY);
        mapper.registerModule(new JavaTimeModule());
        return mapper;
    }

    /**
     * Convert an object to JSON byte array.
     *
     * @param object the object to convert.
     * @return the JSON byte array.
     * @throws IOException
     */
    public static byte[] convertObjectToJsonBytes(Object object) throws IOException {
        return mapper.writeValueAsBytes(object);
    }

    /**
     * Create a byte array with a specific size filled with specified data.
     *
     * @param size the size of the byte array.
     * @param data the data to put in the byte array.
     * @return the JSON byte array.
     */
    public static byte[] createByteArray(int size, String data) {
        byte[] byteArray = new byte[size];
        for (int i = 0; i < size; i++) {
            byteArray[i] = Byte.parseByte(data, 2);
        }
        return byteArray;
    }
<%_ if (databaseTypeCouchbase) { _%>

    /**
     * Mock user authentication
     */
    public static void mockAuthentication() {
        TestSecurityContextHolder.getContext().setAuthentication(new TestingAuthenticationToken("user", null));
    }
<%_ } _%>

    /**
     * A matcher that tests that the examined string represents the same instant as the reference datetime.
     */
    public static class ZonedDateTimeMatcher extends TypeSafeDiagnosingMatcher<String> {

        private final ZonedDateTime date;

        public ZonedDateTimeMatcher(ZonedDateTime date) {
            this.date = date;
        }

        @Override
        protected boolean matchesSafely(String item, Description mismatchDescription) {
            try {
                if (!date.isEqual(ZonedDateTime.parse(item))) {
                    mismatchDescription.appendText("was ").appendValue(item);
                    return false;
                }
                return true;
            } catch (DateTimeParseException e) {
                mismatchDescription.appendText("was ").appendValue(item)
                    .appendText(", which could not be parsed as a ZonedDateTime");
                return false;
            }

        }

        @Override
        public void describeTo(Description description) {
            description.appendText("a String representing the same Instant as ").appendValue(date);
        }
    }

    /**
     * Creates a matcher that matches when the examined string represents the same instant as the reference datetime.
     *
     * @param date the reference datetime against which the examined string is checked.
     */
    public static ZonedDateTimeMatcher sameInstant(ZonedDateTime date) {
        return new ZonedDateTimeMatcher(date);
    }

    /**
     * A matcher that tests that the examined number represents the same value - it can be Long, Double, etc - as the reference BigDecimal.
     */
    public static class NumberMatcher extends TypeSafeMatcher<Number> {

        final BigDecimal value;

        public NumberMatcher(BigDecimal value) {
            this.value = value;
        }

        @Override
        public void describeTo(Description description) {
            description.appendText("a numeric value is ").appendValue(value);
        }

        @Override
        protected boolean matchesSafely(Number item) {
            BigDecimal bigDecimal = asDecimal(item);
            return bigDecimal != null && value.compareTo(bigDecimal) == 0;
        }

        private static BigDecimal asDecimal(Number item) {
            if (item == null) {
                return null;
            }
            if (item instanceof BigDecimal) {
                return (BigDecimal) item;
            } else if (item instanceof Long) {
                return BigDecimal.valueOf((Long) item);
            } else if (item instanceof Integer) {
                return BigDecimal.valueOf((Integer) item);
            } else if (item instanceof Double) {
                return BigDecimal.valueOf((Double) item);
            } else if (item instanceof Float) {
                return BigDecimal.valueOf((Float) item);
            } else {
                return BigDecimal.valueOf(item.doubleValue());
            }

        }
    }
    /**
     * Creates a matcher that matches when the examined number represents the same value as the reference BigDecimal.
     *
     * @param number the reference BigDecimal against which the examined number is checked.
     */
    public static NumberMatcher sameNumber(BigDecimal number) {
        return new NumberMatcher(number);
    }

    /**
     * Verifies the equals/hashcode contract on the domain object.
     */
    public static <T> void equalsVerifier(Class<T> clazz) throws Exception {
        T domainObject1 = clazz.getConstructor().newInstance();
        assertThat(domainObject1.toString()).isNotNull();
        assertThat(domainObject1).isEqualTo(domainObject1);
        assertThat(domainObject1).hasSameHashCodeAs(domainObject1);
        // Test with an instance of another class
        Object testOtherObject = new Object();
        assertThat(domainObject1).isNotEqualTo(testOtherObject);
        assertThat(domainObject1).isNotEqualTo(null);
        // Test with an instance of the same class
        T domainObject2 = clazz.getConstructor().newInstance();
        assertThat(domainObject1).isNotEqualTo(domainObject2);
<%_ if (databaseTypeSql || databaseTypeMongodb || databaseTypeCouchbase) { _%>
        // HashCodes are equals because the objects are not persisted yet
        assertThat(domainObject1).hasSameHashCodeAs(domainObject2);
<%_ } _%>
    }
<%_ if (!reactive) { _%>

    /**
     * Create a {@link FormattingConversionService} which use ISO date format, instead of the localized one.
     * @return the {@link FormattingConversionService}.
     */
    public static FormattingConversionService createFormattingConversionService() {
        DefaultFormattingConversionService dfcs = new DefaultFormattingConversionService ();
        DateTimeFormatterRegistrar registrar = new DateTimeFormatterRegistrar();
        registrar.setUseIsoFormat(true);
        registrar.registerFormatters(dfcs);
        return dfcs;
    }
<%_ } _%>
<%_ if (databaseTypeSql) { _%>

    /**
     * Makes a an executes a query to the EntityManager finding all stored objects.
     * @param <T> The type of objects to be searched
     * @param em The instance of the EntityManager
     * @param clss The class type to be searched
     * @return A list of all found objects
     */
    public static <T> List<T> findAll(EntityManager em, Class<T> clss) {
        CriteriaBuilder cb = em.getCriteriaBuilder();
        CriteriaQuery<T> cq = cb.createQuery(clss);
        Root<T> rootEntry = cq.from(clss);
        CriteriaQuery<T> all = cq.select(rootEntry);
        TypedQuery<T> allQuery = em.createQuery(all);
        return allQuery.getResultList();
    }
<%_ } _%>
<%_ if (searchEngineCouchbase) { _%>
    public static <T> void retryUntilNotEmpty(Callable<Iterable<T>> iterableCallable) {
        Mono.defer(
                () -> Mono.fromCallable(iterableCallable)
                    .flatMapIterable(Function.identity())
                    .next()
                    .switchIfEmpty(Mono.error(new NoSuchElementException()))
            )
            .retry()
            .timeout(Duration.ofSeconds(5))
            .block();
    }

<%_ } _%>

    private TestUtil() {}
}