/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF 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.
 */
package org.apache.kafka.connect.runtime;

import org.apache.kafka.common.internals.Plugin;
import org.apache.kafka.connect.runtime.isolation.TestPlugins;
import org.apache.kafka.connect.source.SourceRecord;
import org.apache.kafka.connect.transforms.Transformation;
import org.apache.kafka.connect.transforms.predicates.Predicate;

import org.junit.jupiter.api.Test;
import org.mockito.junit.jupiter.MockitoSettings;
import org.mockito.quality.Strictness;

import java.util.Map;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

@MockitoSettings(strictness = Strictness.STRICT_STUBS)
public class TransformationStageTest {

    private final SourceRecord initial = new SourceRecord(Map.of("initial", 1), null, null, null, null);
    private final SourceRecord transformed = new SourceRecord(Map.of("transformed", 2), null, null, null, null);

    @Test
    public void apply() throws Exception {
        applyAndAssert(true, false, transformed);
        applyAndAssert(true, true, initial);
        applyAndAssert(false, false, initial);
        applyAndAssert(false, true, transformed);
    }

    @SuppressWarnings("unchecked")
    private void applyAndAssert(boolean predicateResult, boolean negate, SourceRecord expectedResult) throws Exception {
        Plugin<Predicate<SourceRecord>> predicatePlugin = mock(Plugin.class);
        Predicate<SourceRecord> predicate = mock(Predicate.class);
        when(predicate.test(any())).thenReturn(predicateResult);
        when(predicatePlugin.get()).thenReturn(predicate);
        Plugin<Transformation<SourceRecord>> transformationPlugin = mock(Plugin.class);
        Transformation<SourceRecord> transformation = mock(Transformation.class);
        if (expectedResult == transformed) {
            when(transformationPlugin.get()).thenReturn(transformation);
            when(transformation.apply(any())).thenReturn(transformed);
        }
        TransformationStage<SourceRecord> stage = new TransformationStage<>(
                predicatePlugin,
                "testPredicate",
                null,
                negate,
                transformationPlugin,
                "testTransformation",
                null,
                TestPlugins.noOpLoaderSwap()
        );

        assertEquals(expectedResult, stage.apply(initial));

        stage.close();
        verify(predicatePlugin).close();
        verify(transformationPlugin).close();
    }
}
