package org.jaudiotagger.tag.id3;

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

import static org.jaudiotagger.tag.id3.ID3v24Frames.FRAME_ID_ACCOMPANIMENT;

/**
 * Orders frame Ids so that the most important frames are writtne first
 */
public class ID3v22PreferredFrameOrderComparator implements Comparator<String>
{
    private static ID3v22PreferredFrameOrderComparator comparator;
    private static List frameIdsInPreferredOrder = new ArrayList<String>();
    static
    {
        //these are the key ones we want at the top
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_UNIQUE_FILE_ID);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_TITLE);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_ARTIST);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_ALBUM);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_TORY);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_GENRE);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_COMPOSER);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_CONDUCTOR);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_CONTENT_GROUP_DESC);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_TRACK);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_TYER);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_TDAT);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_TIME);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_BPM);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_ISRC);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_TORY);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_ACCOMPANIMENT);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_TITLE_REFINEMENT);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_UNSYNC_LYRICS);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_USER_DEFINED_INFO);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_USER_DEFINED_URL);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_URL_ARTIST_WEB);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_URL_COMMERCIAL);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_URL_COPYRIGHT);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_URL_FILE_WEB);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_URL_OFFICIAL_RADIO);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_URL_PAYMENT);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_URL_PUBLISHERS);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_URL_COMMERCIAL);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_LYRICIST);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_MEDIA_TYPE);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_IPLS);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_LANGUAGE);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_TITLE_SORT_ORDER_ITUNES);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_PLAYLIST_DELAY);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_PLAY_COUNTER);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_POPULARIMETER);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_PUBLISHER);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_ALBUM_ARTIST_SORT_ORDER_ITUNES);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_COMPOSER_SORT_ORDER_ITUNES);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_IS_COMPILATION);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_TITLE_SORT_ORDER_ITUNES);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_ARTIST_SORT_ORDER_ITUNES);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_ALBUM_SORT_ORDER_ITUNES);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_ALBUM_ARTIST_SORT_ORDER_ITUNES);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_COMPOSER_SORT_ORDER_ITUNES);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_COMMENT);

        //Not so bothered about these
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_TRDA);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_COPYRIGHTINFO);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_ENCODEDBY);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_EQUALISATION);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_EVENT_TIMING_CODES);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_FILE_TYPE);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_HW_SW_SETTINGS);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_INITIAL_KEY);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_LENGTH);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_LINKED_INFO);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_TSIZ);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_MPEG_LOCATION_LOOKUP_TABLE);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_ORIGARTIST);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_ORIG_FILENAME);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_ORIG_LYRICIST);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_ORIG_TITLE);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_RECOMMENDED_BUFFER_SIZE);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_REMIXED);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_REVERB);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_SET);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_SYNC_LYRIC);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_SYNC_TEMPO);

        //Want this near the end because can cause problems with unsyncing
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_ATTACHED_PICTURE);

        //Itunes doesnt seem to like these, and of little use so put right at end
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_MUSIC_CD_ID);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_AUDIO_ENCRYPTION);
        frameIdsInPreferredOrder.add(ID3v22Frames.FRAME_ID_V2_GENERAL_ENCAPS_OBJECT);
    }


    private ID3v22PreferredFrameOrderComparator()
    {

    }

    public static ID3v22PreferredFrameOrderComparator getInstanceof()
    {
        if(comparator ==null)
        {
            comparator =new ID3v22PreferredFrameOrderComparator();
        }
        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 ID3v22PreferredFrameOrderComparator;
    }

}