/*
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Tango - Personal Media Center
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Copyright (C) 2021 Ulrich Hilger
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as
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published by the Free Software Foundation, either version 3 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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package de.uhilger.tango.api;
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import com.sun.net.httpserver.Headers;
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import com.sun.net.httpserver.HttpExchange;
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import de.uhilger.tango.App;
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import de.uhilger.tango.Server;
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import de.uhilger.tango.entity.Einstellung;
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import de.uhilger.tango.entity.Entity;
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import de.uhilger.tango.store.FileStorage;
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import de.uhilger.tango.store.Storage;
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import de.uhilger.tango.store.StorageFile;
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import java.io.File;
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import java.io.FileFilter;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.Set;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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import org.farng.mp3.MP3File;
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import org.farng.mp3.TagException;
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import org.farng.mp3.id3.AbstractID3v2;
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import org.farng.mp3.id3.ID3v1;
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/**
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*
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* @author ulrich
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*/
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public class ListFileHandler extends FileHandler {
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public static final String RB_AUDIOEXTS = "audioexts";
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public static final String RB_VIDEOEXTS = "videoexts";
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/* Der Logger fuer diesen ListFileHandler */
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private static final Logger logger = Logger.getLogger(ListFileHandler.class.getName());
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private static final String[] specialChars = {new String("\u00c4"), new String("\u00d6"),
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new String("\u00dc"), new String("\u00e4"), new String("\u00f6"), new String("\u00fc"), new String("\u00df")};
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public static final String UNWANTED_PATTERN = "[^a-zA-Z_0-9 ]";
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Map extMap = new HashMap();
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private String conf;
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public ListFileHandler(String absoluteDirectoryPathAndName, String conf) {
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super(absoluteDirectoryPathAndName);
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/*
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Ermittlung von Dateifiltern.
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Sie werden erwartet in den Einstellungen 'audioexts' und 'videoexts'
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jeweils als Dateierweiterungen mit Komma getrennt
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z.B. "mp4,m4v"
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*/
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FileStorage fs = new FileStorage(conf);
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initMap(fs, getResString(RB_AUDIOEXTS), StorageFile.TYP_AUDIO);
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initMap(fs, getResString(RB_VIDEOEXTS), StorageFile.TYP_VIDEO);
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}
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private void initMap(Storage s, String key, String typ) {
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Entity e = s.read(Einstellung.class.getSimpleName(), key);
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if(e instanceof Einstellung) {
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String[] exts = ((Einstellung) e).getValue().split(",");
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for(String ext : exts) {
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extMap.put(ext, typ);
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}
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}
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}
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@Override
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public void handle(HttpExchange e) throws IOException {
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String path = e.getRequestURI().toString();
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logger.fine(path);
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if(path.endsWith(Server.SLASH)) {
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String fName = getFileName(e);
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logger.fine(fName);
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File dir = new File(fileBase, fName);
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logger.fine(dir.getAbsolutePath());
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File[] files = dir.listFiles(new FileFilter() {
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@Override
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public boolean accept(File pathname) {
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Set keys = extMap.keySet();
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String fname = pathname.getName();
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int pos = fname.lastIndexOf(".");
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String ext = fname.substring(pos+1);
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return keys.contains(ext) || pathname.isDirectory();
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}
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});
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Arrays.sort(files);
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ArrayList list = new ArrayList();
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if(files != null) {
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for(File file : files) {
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StorageFile sf = new StorageFile();
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String fname = file.getName();
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sf.setName(fname);
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sf.setTitelAnzName(fname);
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if(file.isDirectory()) {
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sf.setTyp(StorageFile.TYP_FOLDER);
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} else {
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int pos = fname.lastIndexOf(".");
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String ext = fname.substring(pos+1);
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logger.log(Level.FINE, "ext: {0}", ext);
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Object o = extMap.get(ext);
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if(o instanceof String) {
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sf.setTyp(o.toString());
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getMetadata(file, sf);
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} else {
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sf.setTyp(StorageFile.TYP_FILE);
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}
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}
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list.add(sf);
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}
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}
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//Collections.sort(list);
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String rawjson = jsonWithCustomType(list, "Medialiste");
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String json = escapeHtml(rawjson);
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logger.fine(json);
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Headers headers = e.getResponseHeaders();
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headers.add("Content-Type", "application/json; charset=UTF-8");
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e.sendResponseHeaders(200, json.length());
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OutputStream os = e.getResponseBody();
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os.write(json.getBytes());
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os.close();
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} else {
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super.handle(e);
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}
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}
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public String escapeHtml(String text) {
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text = text.replace(specialChars[0], "Ae");
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text = text.replace(specialChars[1], "Oe");
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text = text.replace(specialChars[2], "Ue");
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text = text.replace(specialChars[3], "ae");
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text = text.replace(specialChars[4], "oe");
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text = text.replace(specialChars[5], "ue");
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text = text.replace(specialChars[6], "ss");
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/*
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text = text.replace(specialChars[0], "Ä");
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text = text.replace(specialChars[1], "Ö");
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text = text.replace(specialChars[2], "Ü");
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text = text.replace(specialChars[3], "ä");
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text = text.replace(specialChars[4], "ö");
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text = text.replace(specialChars[5], "ü");
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text = text.replace(specialChars[6], "ß");
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*/
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return text;
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}
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private void getMetadata(File file, StorageFile sf) {
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if(sf.getTyp().equalsIgnoreCase(StorageFile.TYP_AUDIO)) {
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try {
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MP3File mp3 = new MP3File(file);
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ID3v1 tag = mp3.getID3v1Tag();
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if(tag == null) {
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AbstractID3v2 tag2 = mp3.getID3v2Tag();
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sf.setInterpret(tag2.getLeadArtist().replaceAll(UNWANTED_PATTERN, ""));
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String trackTitel = tag2.getSongTitle().replaceAll(UNWANTED_PATTERN, "");
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if(trackTitel != null && trackTitel.length() > 0) {
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sf.setTitelAnzName(trackTitel);
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}
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sf.setAlbum(tag2.getAlbumTitle().replaceAll(UNWANTED_PATTERN, ""));
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} else {
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sf.setInterpret(tag.getArtist().replaceAll(UNWANTED_PATTERN, ""));
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String trackTitel = tag.getTitle().replaceAll(UNWANTED_PATTERN, "");
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if(trackTitel != null && trackTitel.length() > 0) {
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sf.setTitelAnzName(trackTitel);
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}
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sf.setAlbum(tag.getAlbumTitle().replaceAll(UNWANTED_PATTERN, ""));
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}
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} catch (IOException ex) {
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Logger.getLogger(ListFileHandler.class.getName()).log(Level.SEVERE, null, ex);
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} catch (TagException ex) {
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Logger.getLogger(ListFileHandler.class.getName()).log(Level.SEVERE, null, ex);
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}
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}
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}
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}
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