*/
package org.codelibs.fess.suggest.normalizer;

/**
 * An interface for normalizing text.
 * Implementations of this interface should provide a method to normalize
 * a given text based on the specified field and optional language parameters.
 */
public interface Normalizer {
    /**
     * Normalizes the given text.
     * @param text The text to normalize
     * @param field The field name

        for (final Normalizer normalizer : normalizers) {
            tmp = normalizer.normalize(tmp, field, langs);
            if (tmp == null) {
                return null;
            }
        }
        return tmp;
    }

    /**
     * Adds a normalizer to the chain.
     * @param normalizer The normalizer to add.
     * @throws IllegalArgumentException if normalizer is null
     */

        HankakuKanaToZenkakuKana normalizer = new HankakuKanaToZenkakuKana();

        String result = normalizer.normalize("ｱｲｳｴｵ", "field");

        assertEquals("アイウエオ", result);
    }

    @Test
    public void test_voicedSounds() throws Exception {
        HankakuKanaToZenkakuKana normalizer = new HankakuKanaToZenkakuKana();

        String result = normalizer.normalize("ｶﾞｷﾞｸﾞｹﾞｺﾞ", "field");

                chain.add(new LangAnalyzerNormalizer(lang));
            }
            normalizer = chain;
        }
        return normalizer.normalize(text, field);
    }

    /**
     * Language-specific analyzer normalizer.
     */
    protected class LangAnalyzerNormalizer implements Normalizer {
        /**
         * The language used for normalization.
         */
        protected final String lang;

        String result = normalizer.normalize("ＡＢＣＤＥＦＧＨＩＪＫＬＭＮＯＰＱＲＳＴＵＶＷＸＹＺ", "field");

        assertEquals("ABCDEFGHIJKLMNOPQRSTUVWXYZ", result);
    }

    @Test
    public void test_mixedAlphabet() throws Exception {
        FullWidthToHalfWidthAlphabetNormalizer normalizer = new FullWidthToHalfWidthAlphabetNormalizer();

        this.readingConverter = readingConverter;
        return this;
    }

    /**
     * Sets the normalizer.
     * @param normalizer The normalizer.
     * @return This SuggestIndexer instance.
     */
    public SuggestIndexer setNormalizer(final Normalizer normalizer) {
        this.normalizer = normalizer;
        return this;
    }

    /**
     * Sets the analyzer.
     * @param analyzer The analyzer.

        String result = chain.normalize("ａｂｃ", "field", "en", "ja");

        assertEquals("abc", result);
    }

    @Test
    public void test_addMultipleNormalizersInOrder() throws Exception {
        NormalizerChain chain = new NormalizerChain();
        Normalizer normalizer1 = (text, field, langs) -> text + "-1";
        Normalizer normalizer2 = (text, field, langs) -> text + "-2";

     */
    public ReadingConverter getReadingConverter() {
        return readingConverter;
    }

    /**
     * Returns the Normalizer instance.
     * @return The Normalizer instance.
     */
    public Normalizer getNormalizer() {
        return normalizer;
    }

    /**
     * Creates a default SuggestIndexer instance.
     * @return A SuggestIndexer instance.
     */

        return this;
    }

    /**
     * Sets the normalizer.
     * @param normalizer The normalizer.
     * @return This builder instance.
     */
    public SuggesterBuilder normalizer(final Normalizer normalizer) {
        this.normalizer = normalizer;
        return this;
    }

    /**
     * Sets the analyzer.
     * @param analyzer The analyzer.

        AnalyzerNormalizer normalizer = new AnalyzerNormalizer(runner.client(), suggester.settings());
        assertNotNull(normalizer);
    }

    @Test
    public void test_normalizeWithDefaultLanguage() throws Exception {
        AnalyzerNormalizer normalizer = new AnalyzerNormalizer(runner.client(), suggester.settings());

        String result = normalizer.normalize("test", "content");

        assertNotNull(result);