/*
 * 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.paimon.fulltext.index;

import org.apache.paimon.utils.JsonSerdeUtil;

import org.apache.paimon.shade.jackson2.com.fasterxml.jackson.core.type.TypeReference;

import org.junit.jupiter.api.Test;

import java.nio.charset.StandardCharsets;
import java.util.LinkedHashMap;
import java.util.Map;

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

/** Tests for {@link NativeFullTextIndexOptions}. */
public class NativeFullTextIndexOptionsTest {

    @Test
    public void testDefaultOptionsSerializeEmptyJson() throws Exception {
        NativeFullTextIndexOptions indexOptions = NativeFullTextIndexOptions.defaults();

        assertThat(indexOptions.toNativeOptions()).isEmpty();
        assertThat(indexOptions.serialize()).isEqualTo("{}".getBytes(StandardCharsets.UTF_8));
    }

    @Test
    public void testOptionsArePassedThrough() throws Exception {
        Map<String, String> options = new LinkedHashMap<>();
        options.put("tokenizer", "default");
        options.put("ngram.min-gram", "2");
        options.put("custom-future-option", "future-value");

        NativeFullTextIndexOptions indexOptions = new NativeFullTextIndexOptions(options);

        assertThat(indexOptions.toNativeOptions()).containsExactlyEntriesOf(options);
        assertThat(serializedOptions(indexOptions)).containsExactlyEntriesOf(options);
    }

    private static Map<String, String> serializedOptions(NativeFullTextIndexOptions indexOptions)
            throws Exception {
        return JsonSerdeUtil.fromJson(
                new String(indexOptions.serialize(), StandardCharsets.UTF_8),
                new TypeReference<Map<String, String>>() {});
    }
}
