/*
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http-cm - File management extensions to jdk.httpserver
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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.httpserver.cm.actor;
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import com.google.gson.Gson;
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import com.sun.net.httpserver.HttpExchange;
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import de.uhilger.httpserver.base.HttpHelper;
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import de.uhilger.httpserver.base.HttpResponder;
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import de.uhilger.httpserver.base.handler.FileHandler;
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import static de.uhilger.httpserver.base.handler.FileHandler.SC_OK;
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import de.uhilger.httpserver.cm.DirList;
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import de.uhilger.httpserver.cm.FileManager;
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import static de.uhilger.httpserver.cm.FileManager.STR_DOT;
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import static de.uhilger.httpserver.cm.FileManager.STR_SLASH;
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import de.uhilger.httpserver.cm.ImageFileFilter;
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import de.uhilger.httpserver.image.Datei;
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import de.uhilger.httpserver.image.ImageActor;
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import de.uhilger.httpserver.image.ImageThread;
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import de.uhilger.httpserver.image.ImageThread.ThreadListener;
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import java.io.File;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.List;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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/**
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* Klasse zum Erzeugen von Dateilisten
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*
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* @author Ulrich Hilger, 15. Januar 2024
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*/
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public class Lister implements ThreadListener {
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private final List waitingThreads;
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private final int maxThreads;
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private int threadCount;
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public Lister() {
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waitingThreads = new ArrayList();
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maxThreads = 4;
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threadCount = 0;
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}
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public String liste(String fName, String ctxPath, String base, String path) throws IOException {
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String dirListPath = ctxPath + fName;
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//if (path.endsWith(STR_SLASH)) {
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//logger.fine("fName: " + fName);
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File dir = new File(base, fName);
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//logger.fine("absPath: " + dir.getAbsolutePath());
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File[] files = dir.listFiles(new ImageFileFilter());
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if(files != null && files.length > 0) {
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Arrays.sort(files);
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ArrayList liste = new ArrayList();
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for (File file : files) {
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Datei datei = new Datei();
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String dateiName = file.getName();
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datei.setName(dateiName);
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if (file.isDirectory()) {
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datei.setTyp(Datei.TYP_ORDNER);
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} else {
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datei.setTyp(Datei.TYP_DATEI);
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}
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//datei.setPfad(e.getHttpContext().getPath() + fName);
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String lowerName = dateiName.toLowerCase();
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if (lowerName.endsWith(ImageActor.JPEG)
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|| lowerName.endsWith(ImageActor.JPG)
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|| lowerName.endsWith(ImageActor.PNG)) {
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datei.setBild(true);
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String ext = dateiName.substring(dateiName.lastIndexOf(STR_DOT));
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String ohneExt = dateiName.substring(0, dateiName.lastIndexOf(STR_DOT));
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datei.setMiniurl(ohneExt + ImageActor.TN + ext);
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buildImgSrc(file, datei, ohneExt, ext);
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}
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liste.add(datei);
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}
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while(threadCount > 0) {
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try {
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Thread.sleep(50);
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} catch (InterruptedException ex) {
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Logger.getLogger(FileManager.class.getName()).log(Level.SEVERE, null, ex);
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}
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}
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if(liste.size() > 0) {
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DirList list = new DirList();
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list.setPfad(dirListPath);
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list.setDateien(liste);
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Gson gson = new Gson();
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//String json = gson.toJson(liste);
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String json = gson.toJson(list);
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//byte[] bytes = json.getBytes();
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//logger.fine("json: '" + json + "'");
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return json;
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} else {
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return null;
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}
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} else {
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return null;
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}
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//} else {
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//}
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}
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public void b64Action(String fName, String base) throws IOException {
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String lowerName = fName.toLowerCase();
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if(lowerName.contains(ImageActor.B64)) {
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ImageActor actor = new ImageActor();
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String fromName = fName.replace(ImageActor.B64, "");
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File fromFile = new File(base, fromName);
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File toFile = new File(base, fName);
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//logger.fine("from " + fromFile.getAbsolutePath() + ", to " + toFile.getAbsolutePath());
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if(!toFile.exists()) {
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actor.b64Image(fromFile, toFile);
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}
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}
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}
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// data:[<mime type>][;charset=<Zeichensatz>][;base64],<Daten>
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/*
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[So. Juni 13 13:23:32 MESZ 2021] FEIN:
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file: /home/ulrich/helix-files/bild-test/10419903-14-2-1920-r.jpg,
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relname: bild-test/10419903-14-2-1920-r.jpg, ohneExt: 10419903-14-2-1920-r, ext: .jpg (de.uhilger.helix.FileManager buildImgSrc)
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*/
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private void buildImgSrc(File file, Datei datei, String ohneExt, String ext) throws IOException {
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//logger.fine("file: " + file.getAbsolutePath() + ", ohneExt: " + ohneExt + ", ext: " + ext);
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File dir = file.getParentFile();
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String newRelName = ohneExt + ImageActor.TN + ImageActor.B64 + ext;
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File b64File = new File(dir, newRelName);
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//logger.fine("b64File: " + b64File.getAbsolutePath());
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if(!b64File.exists()) {
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//BildErzeuger be = new BildErzeuger();
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//be.bildErzeugen(dir, newRelName, BildErzeuger.TN, 120, b64File);
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ImageThread it = new ImageThread(dir, newRelName, ImageActor.TN, 120, b64File, datei, ext);
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it.addListener(this);
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if(threadCount < maxThreads) {
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++threadCount;
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//logger.fine("Thread started, threadCount: " + threadCount);
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it.start();
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} else {
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waitingThreads.add(it);
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//logger.fine("Thread added to wait queue.");
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}
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} else {
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ImageActor be = new ImageActor();
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be.setImgSrc(datei, ext, b64File);
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}
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}
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@Override
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public void finished() {
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--threadCount;
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//logger.fine("Thread finished, threadCound now: " + threadCount);
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if (threadCount < maxThreads) {
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if (waitingThreads.size() > 0) {
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Object o = waitingThreads.get(0);
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if (o instanceof ImageThread) {
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waitingThreads.remove(o);
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ImageThread it = (ImageThread) o;
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++threadCount;
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//logger.fine("Thread started from wait queue, threadCount now: " + threadCount);
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it.start();
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}
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}
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}
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}
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}
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