/*
 * SPDX-License-Identifier: Apache-2.0
 *
 * The OpenSearch Contributors require contributions made to
 * this file be licensed under the Apache-2.0 license or a
 * compatible open source license.
 */

/*
 * Licensed to Elasticsearch under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch licenses this file to you 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.
 */
/*
 * Modifications Copyright OpenSearch Contributors. See
 * GitHub history for details.
 */

package org.opensearch.action.ingest;

import org.opensearch.core.xcontent.XContentParser;
import org.opensearch.test.AbstractXContentTestCase;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.StringJoiner;
import java.util.function.Predicate;
import java.util.function.Supplier;

public class SimulateDocumentVerboseResultTests extends AbstractXContentTestCase<SimulateDocumentVerboseResult> {

    static SimulateDocumentVerboseResult createTestInstance(boolean withFailures) {
        int numDocs = randomIntBetween(0, 5);
        List<SimulateProcessorResult> results = new ArrayList<>();
        for (int i = 0; i < numDocs; i++) {
            boolean isSuccessful = !(withFailures && randomBoolean());
            boolean isIgnoredError = withFailures && randomBoolean();
            boolean hasCondition = withFailures && randomBoolean();
            results.add(SimulateProcessorResultTests.createTestInstance(isSuccessful, isIgnoredError, hasCondition));
        }
        return new SimulateDocumentVerboseResult(results);
    }

    private static SimulateDocumentVerboseResult createTestInstanceWithFailures() {
        return createTestInstance(true);
    }

    @Override
    protected SimulateDocumentVerboseResult createTestInstance() {
        return createTestInstance(false);
    }

    @Override
    protected SimulateDocumentVerboseResult doParseInstance(XContentParser parser) {
        return SimulateDocumentVerboseResult.fromXContent(parser);
    }

    @Override
    protected boolean supportsUnknownFields() {
        return true;
    }

    static void assertEqualDocs(SimulateDocumentVerboseResult response, SimulateDocumentVerboseResult parsedResponse) {
        assertEquals(response.getProcessorResults().size(), parsedResponse.getProcessorResults().size());
        for (int i = 0; i < response.getProcessorResults().size(); i++) {
            SimulateProcessorResultTests.assertEqualProcessorResults(
                response.getProcessorResults().get(i),
                parsedResponse.getProcessorResults().get(i)
            );
        }
    }

    @Override
    protected void assertEqualInstances(SimulateDocumentVerboseResult response, SimulateDocumentVerboseResult parsedResponse) {
        assertEqualDocs(response, parsedResponse);
    }

    @Override
    protected Predicate<String> getRandomFieldsExcludeFilter() {
        // We cannot have random fields in the _source field and _ingest field
        return field -> field.contains(
            new StringJoiner(".").add(WriteableIngestDocument.DOC_FIELD).add(WriteableIngestDocument.SOURCE_FIELD).toString()
        )
            || field.contains(
                new StringJoiner(".").add(WriteableIngestDocument.DOC_FIELD).add(WriteableIngestDocument.INGEST_FIELD).toString()
            );
    }

    /**
     * Test parsing {@link SimulateDocumentVerboseResult} with inner failures as they don't support asserting on xcontent
     * equivalence, given that exceptions are not parsed back as the same original class. We run the usual
     * {@link AbstractXContentTestCase#testFromXContent()} without failures, and this other test with failures where we
     * disable asserting on xcontent equivalence at the end.
     */
    public void testFromXContentWithFailures() throws IOException {
        Supplier<SimulateDocumentVerboseResult> instanceSupplier = SimulateDocumentVerboseResultTests::createTestInstanceWithFailures;
        // exceptions are not of the same type whenever parsed back
        boolean assertToXContentEquivalence = false;
        AbstractXContentTestCase.testFromXContent(
            NUMBER_OF_TEST_RUNS,
            instanceSupplier,
            supportsUnknownFields(),
            getShuffleFieldsExceptions(),
            getRandomFieldsExcludeFilter(),
            this::createParser,
            this::doParseInstance,
            this::assertEqualInstances,
            assertToXContentEquivalence,
            getToXContentParams()
        );
    }
}