From 9d4292732c1db2de2e9545ac9d91b431aa98ebad Mon Sep 17 00:00:00 2001
From: ulrich
Date: Sun, 30 Mar 2025 17:23:05 +0000
Subject: [PATCH] Maschine Ausschalten nach einer Minute, sodass der Server zuvor herunter fahren kann.

---
 src/de/uhilger/calypso/actor/DownServerActor.java |   60 ++++++++++++++++++++++++++++++
 src/de/uhilger/calypso/http/ApiHandler.java       |   22 +++++++++-
 2 files changed, 79 insertions(+), 3 deletions(-)

diff --git a/src/de/uhilger/calypso/actor/DownServerActor.java b/src/de/uhilger/calypso/actor/DownServerActor.java
new file mode 100644
index 0000000..7f54a66
--- /dev/null
+++ b/src/de/uhilger/calypso/actor/DownServerActor.java
@@ -0,0 +1,60 @@
+/*
+    Calypso - Media Player Remote Control via HTTP for Raspberry Pi
+    Copyright (C) 2021-2023  Ulrich Hilger
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as
+    published by the Free Software Foundation, either version 3 of the
+    License, or (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+package de.uhilger.calypso.actor;
+
+import com.sun.net.httpserver.HttpContext;
+import java.io.IOException;
+import java.util.Timer;
+import java.util.TimerTask;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+/**
+ * Ein HTTP-Handler zum Stoppen der Anwendung
+ *
+ * @author Ulrich Hilger
+ */
+public class DownServerActor extends StopServerActor {
+  
+  public void run(HttpContext thisContext) {
+    Logger.getLogger(DownServerActor.class.getName()).info(
+            "Maschine wird in einer Minute ausgeschaltet.");
+    ProcessBuilder pb = new ProcessBuilder("sudo", "shutdown", "-h", "-P", "+1");
+    try {    
+      Process process = pb.start();
+    } catch (IOException ex) {
+      Logger.getLogger(DownServerActor.class.getName()).log(Level.SEVERE, null, ex);
+    }
+    super.run(thisContext);
+  }
+
+  /**
+   * Die Klasse AppStopper erm&ouml;glicht das asnychrone bzw. 
+   * zeitgesteuerte Stoppen der Anwendung.
+   */
+  class AppStopper extends TimerTask {
+
+    @Override
+    public void run() {
+      Logger.getLogger(DownServerActor.class.getName()).info("Calypso beendet.");
+      System.exit(0);
+    }
+  }
+
+}
diff --git a/src/de/uhilger/calypso/http/ApiHandler.java b/src/de/uhilger/calypso/http/ApiHandler.java
index bcdf2a3..ba978fe 100644
--- a/src/de/uhilger/calypso/http/ApiHandler.java
+++ b/src/de/uhilger/calypso/http/ApiHandler.java
@@ -20,6 +20,7 @@
 
 import com.sun.net.httpserver.HttpContext;
 import com.sun.net.httpserver.HttpExchange;
+import de.uhilger.calypso.actor.DownServerActor;
 import de.uhilger.calypso.actor.PlayActor;
 import de.uhilger.calypso.actor.ShellActor;
 import de.uhilger.calypso.actor.StopServerActor;
@@ -53,6 +54,7 @@
   public static final String STOP = "stop";
   public static final String SERVER = "server";
   public static final String PING = "ping";
+  public static final String DOWN = "down";
   
   public static final String PLAYER = "player-proc";
   
@@ -109,7 +111,8 @@
         break;
         
       case SERVER:
-        if(elems[SERVERCMD].equals(STOP)) {
+      switch (elems[SERVERCMD]) {
+        case STOP:
           try {
             antwort = "Calypso: Der Server wird angehalten und die App beendet.";
             sendResponse(exchange, antwort);
@@ -118,10 +121,23 @@
             Logger.getLogger(ApiHandler.class.getName()).log(Level.SEVERE, null, ex);
             antwort = "Fehler: " + ex.getLocalizedMessage();
           }
-        } else {
+          break;
+        case DOWN:
+          try {
+            antwort = "Calypso: Der Server wird angehalten, die App beendet und die Maschine ausgeschaltet.";
+            sendResponse(exchange, antwort);
+            new DownServerActor().run(exchange.getHttpContext());
+          } catch (IOException ex) {
+            Logger.getLogger(ApiHandler.class.getName()).log(Level.SEVERE, null, ex);
+            antwort = "Fehler: " + ex.getLocalizedMessage();
+          }
+          break;
+        default:
           antwort = elems[SERVERCMD] + " ist ein unbekanntes Serverkommando";
-        }
+          break;
+      }
         break;
+
         
       case PING:
         antwort = elems[PLAYERCMD];

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