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package cdc.mf.html.index;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

import cdc.mf.model.MfElement;
import cdc.mf.model.MfNameItem;

public class IndexSection {
    private static final Comparator COMPARATOR =
            Comparator.comparing((MfNameItem e) -> Index.getEffectiveName(e).toLowerCase())
                      .thenComparing(MfNameItem::getKind)
                      .thenComparing(IndexSection::getEffectiveId);

    private final char key;
    private final List entries = new ArrayList<>();
    private int number = -1;

    IndexSection(char key) {
        this.key = key;
    }

    private static String getEffectiveId(MfElement item) {
        final String id = item.getId();
        return id == null ? "" : id;
    }

    void add(MfNameItem entry) {
        this.entries.add(entry);
    }

    void sort() {
        Collections.sort(entries, COMPARATOR);
    }

    void setNumber(int number) {
        this.number = number;
    }

    public char getKey() {
        return key;
    }

    public List getEntries() {
        return entries;
    }

    public int getNumber() {
        return number;
    }
}