/*
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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.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.Entity;
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import de.uhilger.tango.entity.Geraet;
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import de.uhilger.tango.store.FileStorage;
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import java.io.IOException;
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import java.net.HttpURLConnection;
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import java.net.URL;
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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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* Steuerung von Geraeten, also Ein- und Ausschalten sowie deren Status
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* ermitteln
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*
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*
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* HTTP GET /mz/api/gstrg/geraet/[name]/ein
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* HTTP GET /mz/api/gstrg/geraet/[name]/aus
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* HTTP GET /mz/api/gstrg/geraet/[name]/status
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*
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* @author Ulrich Hilger
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*/
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public class GeraetSteuerung extends AbstractHandler {
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private static final Logger logger = Logger.getLogger(GeraetSteuerung.class.getName());
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public static final String KMD_EIN = "ein";
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public static final String KMD_AUS = "aus";
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public static final String KMD_STATUS = "status";
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private String conf;
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public GeraetSteuerung(String conf) {
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this.conf = conf;
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}
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@Override
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protected String get(HttpExchange e) {
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String response;
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String path = e.getRequestURI().toString();
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String[] elems = path.split(Server.SLASH);
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FileStorage fs = new FileStorage(conf);
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logger.fine(path);
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String geraetName = elems[5];
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String kommando = elems[6];
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Entity entity = fs.read(FileStorage.ST_GERAET, geraetName);
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if(entity instanceof Geraet) {
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Geraet g = (Geraet) entity;
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switch(kommando) {
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case KMD_EIN:
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String einschaltBefehl = g.getEinUrl();
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response = senden(einschaltBefehl);
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break;
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case KMD_AUS:
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String ausschaltBefehl = g.getAusUrl();
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response = senden(ausschaltBefehl);
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break;
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case KMD_STATUS:
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response = statusErmitteln();
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break;
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default:
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response = "Ungueltiges Kommando,";
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break;
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}
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} else {
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response = "Geraet nicht gefunden.";
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}
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return response;
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}
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private String statusErmitteln() {
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return "noch nicht fertig";
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}
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private String senden(String kommando) {
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/*
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TODO hier evtl. mit mehreren Versuchen ausgleichen,
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dass ein einzelner Versuch nicht 'durchkommt'...
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*/
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logger.info(kommando);
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try {
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HttpURLConnection conn = (HttpURLConnection) new URL(kommando).openConnection();
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conn.setRequestMethod("GET");
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conn.connect();
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int status = conn.getResponseCode();
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String msg = conn.getResponseMessage();
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logger.log(Level.INFO, "Kommando {0} mit Status {1} {2} gesendet.", new Object[]{kommando, status, msg});
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return msg;
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} catch(IOException ex) {
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logger.log(Level.INFO, ex.getMessage(), ex);
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return ex.getLocalizedMessage();
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}
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}
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}
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