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

/**
 * lyric fetcher
 *
 * @author matecsaba
 */
public class lyrFetch {

    /**
     * the main
     *
     * @param args arguments
     */
    public static void main(String[] args) {
        List<playerSong> need = playerSong.txt2pls(null, playerUtil.readup("lyr-need.pls"));
        List<playerSong> done = new ArrayList<playerSong>();
        List<playerSong> fail = new ArrayList<playerSong>();
        List<playerSong> skip = new ArrayList<playerSong>();
        for (int i = 0; i < need.size(); i++) {
            if (playerUtil.keyPress()) {
                break;
            }
            playerSong ntry = need.get(i);
            switch (doSong(ntry)) {
                case 0:
                    done.add(ntry);
                    break;
                case 1:
                    skip.add(ntry);
                    break;
                default:
                    fail.add(ntry);
                    break;
            }
        }
        need.removeAll(skip);
        need.removeAll(done);
        need.removeAll(fail);
        playerUtil.put("--> need=" + need.size() + " skip=" + skip.size() + " done=" + done.size() + " fail=" + fail.size());
        playerUtil.saveas(playerSong.pls2txt(need), "lyr-needed.pls");
        playerUtil.saveas(playerSong.pls2txt(done), "lyr-done.pls");
        playerUtil.saveas(playerSong.pls2txt(fail), "lyr-fail.pls");
        playerUtil.saveas(playerSong.pls2txt(skip), "lyr-skip.pls");
    }

    /**
     * do one song
     *
     * @param song song to search
     * @return 0 on success
     */
    public static int doSong(playerSong song) {
        String cm[] = new String[3];
        cm[0] = "./lyrFetch.sh";
        cm[1] = song.justArtist();
        cm[2] = song.justTitle();
        playerUtil.put("--> song " + song.file + " : " + cm[1] + " - " + cm[2] + " <--");
        playerLyric lyric = playerUtil.readup(song.lyrFile());
        if (lyric != null) {
            playerUtil.put("already exists!");
            return 1;
        }
        if (cm[1].length() < 1) {
            playerUtil.put("no artist!");
            return 1;
        }
        if (cm[2].length() < 1) {
            playerUtil.put("no title!");
            return 1;
        }
        playerLyric res;
        try {
            Runtime rtm = Runtime.getRuntime();
            Process prc = rtm.exec(cm);
            res = playerUtil.doRead(prc.getInputStream());
            prc.waitFor();
            prc.destroy();
        } catch (Exception e) {
            playerUtil.put("failed to exec!");
            return 2;
        }
        if (res == null) {
            playerUtil.put("failed to download!");
            return 2;
        }
        res = res.clearScript();
        if (res.size() < 1) {
            playerUtil.put("got no lyrics!");
            return 3;
        }
        playerUtil.saveas(res, song.lyrFile());
        return 0;
    }

}