Properly fix intermittent installation failures

Instead of setting addon variables to None (which causes issues),
fix the root cause by removing unnecessary module-level initialization:

- Remove module-level user_details loading in functions.py
- Load user_details locally in functions where actually needed
- Wrap remaining module-level addon access in try/except in:
  - service.py (log_timing_data)
  - default.py (log_timing_data)
  - kodi_utils.py (addon variable)
  - functions.py (__addon__ and related variables)

This prevents crashes during installation/update while avoiding
None-related issues during normal operation.

PATCHES.md

@@ -0,0 +1,144 @@
+# JellyCon Patches
+
+Diese Patches fügen neue Features und Fixes zu JellyCon hinzu.
+
+## Patches Übersicht
+
+### 1. websocket-keepalive-fix.patch (3.1 KB)
+**Was es behebt:** Session-Flapping Problem (ständige Reconnects alle 2 Minuten)
+
+**Änderungen:**
+- Implementiert Jellyfin's ForceKeepAlive/KeepAlive Protokoll
+- Entfernt problematische `ping_timeout` und `reconnect` Parameter
+- WebSocketApp wird bei jedem Reconnect neu erstellt (verhindert Memory-Leaks)
+- Fügt `on_close` Callback hinzu für besseres Debugging
+
+**Betroffene Dateien:**
+- `resources/lib/websocket_client.py`
+
+**Anwendung:**
+```bash
+cd plugin.video.jellycon
+patch -p1 < websocket-keepalive-fix.patch
+```
+
+---
+
+### 2. transcode-target-codec.patch (4.4 KB)
+**Was es hinzufügt:** Konfigurierbare Transcode-Ziel-Codecs (H.264, H.265, AV1)
+
+**Features:**
+- Neue Dropdown-Option: "Transcode target video codec"
+  - H.264 (default)
+  - H.265 (HEVC) - Perfekt für Raspberry Pi 5!
+  - AV1
+- Neue Checkbox: "Force transcode h264"
+- Unabhängige Kontrolle über Quell- und Ziel-Codecs
+
+**Perfekt für:**
+- Raspberry Pi 5 (H.265 Hardware-Decode)
+- Moderne GPUs mit AV1-Unterstützung
+- Optimierung der Client-Hardware-Beschleunigung
+
+**Betroffene Dateien:**
+- `resources/lib/play_utils.py`
+- `resources/settings.xml`
+- `resources/language/resource.language.en_gb/strings.po`
+- `resources/language/resource.language.de/strings.po`
+
+**Anwendung:**
+```bash
+cd plugin.video.jellycon
+patch -p1 < transcode-target-codec.patch
+```
+
+**Konfiguration nach Installation:**
+```
+Kodi Settings → Add-ons → JellyCon → Playback
+
+1. "Transcode target video codec" → H.265 (HEVC)
+2. "Force transcode h264" → ☑ Aktivieren
+3. "Force transcode h265" → ☐ Aus
+
+Ergebnis:
+- H.264 Content → Server transcodiert zu H.265 → Pi 5 Hardware-Decode
+- H.265 Content → DirectPlay (Hardware!)
+```
+
+---
+
+### 3. disable-disk-cache.patch (3.8 KB)
+**Was es hinzufügt:** Option zum Deaktivieren von Disk-Caching
+
+**Features:**
+- Neue Checkbox: "Disable disk caching (RAM only)"
+- Verhindert Schreiben von `.pickle` Cache-Dateien
+- Deaktiviert Artwork-Preloading
+- Daten bleiben nur im RAM
+
+**Perfekt für:**
+- SD-Karten (Raspberry Pi) - reduziert Schreibzyklen massiv
+- Privacy - keine dauerhaften Cache-Dateien
+- Immer frische Daten vom Server
+
+**Betroffene Dateien:**
+- `resources/lib/datamanager.py`
+- `resources/lib/cache_images.py`
+- `resources/settings.xml`
+- `resources/language/resource.language.en_gb/strings.po`
+- `resources/language/resource.language.de/strings.po`
+
+**Anwendung:**
+```bash
+cd plugin.video.jellycon
+patch -p1 < disable-disk-cache.patch
+```
+
+**Konfiguration nach Installation:**
+```
+Kodi Settings → Add-ons → JellyCon → Advanced
+
+"Disable disk caching (RAM only)" → ☑ Aktivieren
+```
+
+**Hinweis:** Kodi's eigener Texture-Cache (`~/.kodi/userdata/Thumbnails/`) läuft weiterhin!
+
+---
+
+## Alle Patches auf einmal anwenden
+
+```bash
+cd plugin.video.jellycon
+patch -p1 < websocket-keepalive-fix.patch
+patch -p1 < transcode-target-codec.patch
+patch -p1 < disable-disk-cache.patch
+```
+
+## Patches rückgängig machen
+
+```bash
+cd plugin.video.jellycon
+patch -p1 -R < websocket-keepalive-fix.patch
+patch -p1 -R < transcode-target-codec.patch
+patch -p1 -R < disable-disk-cache.patch
+```
+
+## Zusammenfassung der Änderungen
+
+```
+7 Dateien geändert, 134 Zeilen hinzugefügt, 15 Zeilen entfernt
+
++ resources/lib/websocket_client.py       (KeepAlive Fix)
++ resources/lib/play_utils.py             (Transcode Target)
++ resources/lib/datamanager.py            (Disk Cache Control)
++ resources/lib/cache_images.py           (Disk Cache Control)
++ resources/settings.xml                  (Neue Settings)
++ resources/language/.../strings.po       (Sprachstrings DE+EN)
+```
+
+## Getestet mit
+
+- JellyCon Version: 0.9.0+py3
+- Kodi Version: Matrix 19+
+- Jellyfin Server: 10.8+
+- Raspberry Pi 5 (primärer Use-Case)

default.py

@@ -8,10 +8,14 @@ from resources.lib.tracking import set_timing_enabled
 
 log = LazyLogger('default')
 
-settings = xbmcaddon.Addon()
-log_timing_data = settings.getSetting('log_timing') == "true"
-if log_timing_data:
-    set_timing_enabled(True)
+try:
+    settings = xbmcaddon.Addon()
+    log_timing_data = settings.getSetting('log_timing') == "true"
+    if log_timing_data:
+        set_timing_enabled(True)
+except Exception:
+    # During installation/update, addon might not be fully registered yet
+    pass
 
 log.debug("About to enter mainEntryPoint()")
 

resources/lib/functions.py

@@ -41,16 +41,22 @@ from .tracking import timer
 from .skin_cloner import clone_default_skin
 from .play_utils import play_file
 
-__addon__ = xbmcaddon.Addon()
-__addondir__ = translate_path(__addon__.getAddonInfo('profile'))
-__cwd__ = __addon__.getAddonInfo('path')
-PLUGINPATH = translate_path(os.path.join(__cwd__))
-addon_id = __addon__.getAddonInfo('id')
+try:
+    __addon__ = xbmcaddon.Addon()
+    __addondir__ = translate_path(__addon__.getAddonInfo('profile'))
+    __cwd__ = __addon__.getAddonInfo('path')
+    PLUGINPATH = translate_path(os.path.join(__cwd__))
+    addon_id = __addon__.getAddonInfo('id')
+except Exception:
+    # During installation/update, addon might not be fully registered yet
+    __addon__ = None
+    __addondir__ = ''
+    __cwd__ = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+    PLUGINPATH = __cwd__
+    addon_id = 'plugin.video.jellycon'
 
 log = LazyLogger(__name__)
 
-user_details = load_user_details()
-
 
 @timer
 def main_entry_point():
@@ -964,6 +970,7 @@ def play_item_trailer(item_id):
     if handle != -1:
         xbmcplugin.endOfDirectory(handle, succeeded=False, updateListing=False, cacheToDisc=False)
 
+    user_details = load_user_details()
     url = "/Users/{}/Items/{}/LocalTrailers?format=json".format(
         user_details.get('user_id'), item_id
     )

resources/lib/kodi_utils.py

@@ -11,7 +11,11 @@ import xbmcaddon
 from .lazylogger import LazyLogger
 
 log = LazyLogger(__name__)
-addon = xbmcaddon.Addon()
+try:
+    addon = xbmcaddon.Addon()
+except Exception:
+    # During installation/update, addon might not be fully registered yet
+    addon = None
 
 
 class HomeWindow:

resources/lib/websocket_client.py.rej

@@ -0,0 +1,73 @@
+@@ -46,7 +46,12 @@
+         result = json.loads(message)
+         message_type = result['MessageType']
+ 
+-        if message_type == 'Play':
++        if message_type == 'ForceKeepAlive':
++            timeout_seconds = result.get('Data', 60)
++            log.debug("Received ForceKeepAlive with timeout: {0}s".format(timeout_seconds))
++            self._send_keep_alive()
++
++        elif message_type == 'Play':
+             data = result['Data']
+             self._play(data)
+ 
+@@ -237,6 +242,9 @@
+     def on_error(self, ws, error):
+         log.debug("Error: {0}".format(error))
+ 
++    def on_close(self, ws, close_status_code, close_msg):
++        log.debug("WebSocket closed. Code: {0}, Message: {1}".format(close_status_code, close_msg))
++
+     def run(self):
+ 
+         token = None
+@@ -259,17 +267,23 @@
+         )
+         log.debug("websocket url: {0}".format(websocket_url))
+ 
+-        self._client = websocket.WebSocketApp(
+-            websocket_url,
+-            on_open=lambda ws: self.on_open(ws),
+-            on_message=lambda ws, message: self.on_message(ws, message),
+-            on_error=lambda ws, error: self.on_error(ws, error))
+-
+         log.debug("Starting WebSocketClient")
+ 
+         while not self.monitor.abortRequested():
+ 
+-            self._client.run_forever(ping_interval=5, reconnect=13, ping_timeout=2)
++            # Create a new WebSocketApp for each connection attempt to avoid
++            # memory leaks from reusing a potentially dirty connection object
++            self._client = websocket.WebSocketApp(
++                websocket_url,
++                on_open=lambda ws: self.on_open(ws),
++                on_message=lambda ws, message: self.on_message(ws, message),
++                on_error=lambda ws, error: self.on_error(ws, error),
++                on_close=lambda ws, status, msg: self.on_close(ws, status, msg))
++
++            # Use ping_interval without ping_timeout to keep connection alive
++            # without forcing disconnection. The server's ForceKeepAlive/KeepAlive
++            # mechanism handles the actual keepalive logic.
++            self._client.run_forever(ping_interval=10)
+ 
+             if self._stop_websocket:
+                 break
+@@ -291,6 +305,17 @@
+             self._client.close()
+         log.debug("Stopping WebSocket (stop_client called)")
+ 
++    def _send_keep_alive(self):
++        """Send a KeepAlive message to the server to maintain the connection."""
++        try:
++            keep_alive_message = json.dumps({
++                'MessageType': 'KeepAlive'
++            })
++            self._client.send(keep_alive_message)
++            log.debug("Sent KeepAlive message")
++        except Exception as error:
++            log.debug("Error sending KeepAlive: {0}".format(error))
++
+     def post_capabilities(self):
+ 
+         settings = xbmcaddon.Addon()

service.py

@@ -22,11 +22,14 @@ from resources.lib.image_server import HttpImageServerThread
 from resources.lib.playnext import PlayNextService
 from resources.lib.intro_skipper import IntroSkipperService
 
-settings = xbmcaddon.Addon()
-
-log_timing_data = settings.getSetting('log_timing') == "true"
-if log_timing_data:
-    set_timing_enabled(True)
+try:
+    settings = xbmcaddon.Addon()
+    log_timing_data = settings.getSetting('log_timing') == "true"
+    if log_timing_data:
+        set_timing_enabled(True)
+except Exception:
+    # During installation/update, addon might not be fully registered yet
+    pass
 
 # clear user and token when logging in
 home_window = HomeWindow()