package net.knarcraft.ffmpegconverter.utility;

import org.jetbrains.annotations.NotNull;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * A helper class for subtitle-related tasks
 */
public final class SubtitleHelper {

    private SubtitleHelper() {

    }

    /**
     * Checks whether the given subtitle is a songs & signs subtitle
     *
     * @param subtitleTitle <p>The subtitle to check</p>
     * @return <p>True if the subtitle is a songs and signs, not a full subtitle</p>
     */
    public static boolean isSongsSignsSubtitle(@NotNull String subtitleTitle) {
        Pattern pattern = Pattern.compile("(^| |\\(|\\[\\{|/|\\[)si(ng|gn)s?($|[ &/+-@])+(titles)?[ &/+-@]?(songs?)?|" +
                "(^| |\\(|\\[\\{|/)songs?($|[ &/+-@])+(si(gn|ng)s?)?|.*forced.*|.*s&s.*");
        Matcher matcher = pattern.matcher(subtitleTitle.toLowerCase().trim());
        return matcher.find();
    }

}