/*
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neon-fm - Dateiverwaltung fuer neon
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Copyright (C) 2024 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.neon.fm;
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import com.sun.net.httpserver.HttpContext;
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import com.sun.net.httpserver.HttpExchange;
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import de.uhilger.neon.FileServer;
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import de.uhilger.neon.HttpHelper;
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import de.uhilger.neon.HttpResponder;
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import de.uhilger.fm.Catalog;
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import java.io.IOException;
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/**
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* Die Klasse FileCatalog liefert HTTP Methoden zur Erzeugung einer
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* Liste von Dateien und Ordnern
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*
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* @author Ulrich Hilger
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* @version 0.1, 05.11.2024
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*/
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public class FileCatalog extends AbstractFileActor {
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/**
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* <p>Diese Methode ist als Reaktion auf einen HTTP GET Aufruf an
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* folgenden URL gedacht und liefert eine Liste des Ordnerinhalts
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* im JSON-Format</p>
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*
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* <pre>
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* Ordnerinhalt auflisten:
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* http://localhost:[port]/[kontext]/pfad/zum/ordner/
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* </pre>
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*
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* @param exchange das Objekt mit Infos zu HTTP-Request, -Response usw.
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*/
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public void list(HttpExchange exchange) {
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try {
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init(exchange);
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HttpContext ctx = exchange.getHttpContext();
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//String base = ctx.getAttributes().getOrDefault(FileServer.ATTR_FILE_BASE, "").toString();
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if(base.length() == 0) {
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new HttpResponder().sendNotFound(exchange, exchange.getRequestURI().toString()); // not found
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} else {
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String fName = new HttpHelper().getFileName(exchange);
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if (fName.endsWith(FileServer.STR_SLASH)) { // Ordnerliste erzeugen
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String json = new Catalog().list(fName, ctx.getPath(), base);
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if (null != json) {
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new HttpResponder().antwortSenden(exchange, HttpResponder.SC_OK, json);
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} else {
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new HttpResponder().antwortSenden(exchange, HttpResponder.SC_OK, "{}"); // leere Liste
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}
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} else {
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new FileServer().serveFile(exchange); // Datei ausliefern
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}
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}
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} catch (IOException | IllegalArgumentException ex) {
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fehlerAntwort(exchange, ex);
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} finally {
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free();
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}
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}
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}
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