/*
 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 * or more contributor license agreements. Licensed under the "Elastic License
 * 2.0", the "GNU Affero General Public License v3.0 only", and the "Server Side
 * Public License v 1"; you may not use this file except in compliance with, at
 * your election, the "Elastic License 2.0", the "GNU Affero General Public
 * License v3.0 only", or the "Server Side Public License, v 1".
 */
package org.elasticsearch.search.fetch.subphase.highlight;

import org.apache.lucene.document.Field;
import org.apache.lucene.search.highlight.Encoder;
import org.apache.lucene.search.vectorhighlight.BoundaryScanner;
import org.apache.lucene.search.vectorhighlight.FieldFragList.WeightedFragInfo;
import org.elasticsearch.index.mapper.MappedFieldType;

/**
 * Direct Subclass of Lucene's org.apache.lucene.search.vectorhighlight.SimpleFragmentsBuilder
 * that corrects offsets for broken analysis chains.
 */
public class SimpleFragmentsBuilder extends org.apache.lucene.search.vectorhighlight.SimpleFragmentsBuilder {

    protected final MappedFieldType fieldType;
    private final boolean fixBrokenAnalysis;

    public SimpleFragmentsBuilder(
        MappedFieldType fieldType,
        boolean fixBrokenAnalysis,
        String[] preTags,
        String[] postTags,
        BoundaryScanner boundaryScanner
    ) {
        super(preTags, postTags, boundaryScanner);
        this.fieldType = fieldType;
        this.fixBrokenAnalysis = fixBrokenAnalysis;
    }

    @Override
    protected String makeFragment(
        StringBuilder buffer,
        int[] index,
        Field[] values,
        WeightedFragInfo fragInfo,
        String[] preTags,
        String[] postTags,
        Encoder encoder
    ) {
        if (fixBrokenAnalysis) {
            fragInfo = FragmentBuilderHelper.fixWeightedFragInfo(fragInfo);
        }
        return super.makeFragment(buffer, index, values, fragInfo, preTags, postTags, encoder);
    }
}