package org.jaudiotagger.tag.id3;

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

/**
 * Orders frame Ids so that the most important frames are writtne first
 */
public class ID3v23PreferredFrameOrderComparator implements Comparator<String>
{
    private static ID3v23PreferredFrameOrderComparator comparator;
    private static List frameIdsInPreferredOrder = new ArrayList<String>();
    static
    {
        //these are the key ones we want at the top
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_UNIQUE_FILE_ID);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_TITLE);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_ARTIST);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_ALBUM);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_TORY);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_GENRE);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_COMPOSER);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_CONDUCTOR);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_CONTENT_GROUP_DESC);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_TRACK);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_TYER);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_TDAT);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_TIME);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_BPM);           
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_ISRC);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_TORY);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_ACCOMPANIMENT);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_TITLE_REFINEMENT);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_UNSYNC_LYRICS);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_USER_DEFINED_INFO);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_USER_DEFINED_URL);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_URL_ARTIST_WEB);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_URL_COMMERCIAL);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_URL_COPYRIGHT);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_URL_FILE_WEB);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_URL_OFFICIAL_RADIO);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_URL_PAYMENT);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_URL_PUBLISHERS);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_URL_COMMERCIAL);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_LYRICIST);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_MEDIA_TYPE);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_IPLS);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_LANGUAGE);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_TITLE_SORT_ORDER_ITUNES);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_PLAYLIST_DELAY);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_PLAY_COUNTER);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_POPULARIMETER);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_PUBLISHER);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_ALBUM_ARTIST_SORT_ORDER_ITUNES);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_COMPOSER_SORT_ORDER_ITUNES);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_IS_COMPILATION);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_TITLE_SORT_ORDER_ITUNES);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_ARTIST_SORT_ORDER_ITUNES);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_ALBUM_SORT_ORDER_ITUNES);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_TITLE_SORT_ORDER_MUSICBRAINZ);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_ARTIST_SORT_ORDER_MUSICBRAINZ);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_ALBUM_SORT_ORDER_MUSICBRAINZ);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_ALBUM_ARTIST_SORT_ORDER_ITUNES);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_COMPOSER_SORT_ORDER_ITUNES);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_COMMENT);


        //Not so bothered about these
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_TRDA);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_COMMERCIAL_FRAME);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_COPYRIGHTINFO);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_ENCODEDBY);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_ENCRYPTION);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_EQUALISATION);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_EVENT_TIMING_CODES);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_FILE_OWNER);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_FILE_TYPE);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_GROUP_ID_REG);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_HW_SW_SETTINGS);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_INITIAL_KEY);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_LENGTH);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_LINKED_INFO);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_TSIZ);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_MPEG_LOCATION_LOOKUP_TABLE);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_ORIGARTIST);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_ORIG_FILENAME);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_ORIG_LYRICIST);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_ORIG_TITLE);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_OWNERSHIP);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_POSITION_SYNC);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_RADIO_NAME);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_RADIO_OWNER);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_RECOMMENDED_BUFFER_SIZE);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_REMIXED);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_REVERB);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_SET);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_SYNC_LYRIC);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_SYNC_TEMPO);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_TERMS_OF_USE);

        //Want this near the end because can cause problems with unsyncing
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_ATTACHED_PICTURE);

        //Itunes doesnt seem to like these, and of little use so put right at end
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_PRIVATE);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_MUSIC_CD_ID);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_AUDIO_ENCRYPTION);
        frameIdsInPreferredOrder.add(ID3v23Frames.FRAME_ID_V3_GENERAL_ENCAPS_OBJECT);
    }


    private ID3v23PreferredFrameOrderComparator()
    {

    }

    public static ID3v23PreferredFrameOrderComparator getInstanceof()
    {
        if(comparator==null)
        {
            comparator=new  ID3v23PreferredFrameOrderComparator();
        }
        return comparator;
    }

    /**
     *
     * @param frameId1
     * @param frameId2
     * @return
     */
    public int compare(String frameId1,String frameId2)
    {
        int frameId1Index= frameIdsInPreferredOrder.indexOf(frameId1);
        int frameId2Index= frameIdsInPreferredOrder.indexOf(frameId2);
        return frameId1Index - frameId2Index;
    }

    public boolean equals(Object obj)
    {
        return obj instanceof ID3v23PreferredFrameOrderComparator;
    }

}