Add Plugin.uninstall callback support (#555)

* Add Plugin.uninstall callback support

https://github.com/SteamDeckHomebrew/decky-loader/issues/536

* Remove empty deck.sh

backend/decky_loader/browser.py

@@ -135,7 +135,7 @@ class PluginBrowser:
             # logger.debug("current plugins: %s", snapshot_string)
             if name in self.plugins:
                 logger.debug("Plugin %s was found", name)
-                self.plugins[name].stop()
+                self.plugins[name].stop(uninstall=True)
                 logger.debug("Plugin %s was stopped", name)
                 del self.plugins[name]
                 logger.debug("Plugin %s was removed from the dictionary", name)

backend/decky_loader/plugin/plugin.py

@@ -97,9 +97,9 @@ class PluginWrapper:
         self._listener_task = create_task(self._response_listener())
         return self
 
-    def stop(self):
+    def stop(self, uninstall: bool = False):
         self._listener_task.cancel()
         async def _(self: PluginWrapper):
-            await self._socket.write_single_line(dumps({ "stop": True }, ensure_ascii=False))
+            await self._socket.write_single_line(dumps({ "stop": True, "uninstall": uninstall }, ensure_ascii=False))
             await self._socket.close_socket_connection()
         create_task(_(self))

backend/decky_loader/plugin/sandboxed_plugin.py

@@ -76,7 +76,7 @@ class SandboxedPlugin:
 
             # append the plugin's `py_modules` to the recognized python paths
             syspath.append(path.join(environ["DECKY_PLUGIN_DIR"], "py_modules"))
-            
+
             #TODO: FIX IN A LESS CURSED WAY
             keys = [key for key in sysmodules if key.startswith("decky_loader.")]
             for key in keys:
@@ -138,12 +138,29 @@ class SandboxedPlugin:
             self.log.error("Failed to unload " + self.name + "!\n" + format_exc())
             exit(0)
 
-    async def on_new_message(self, message : str) -> str | None:
+    async def _uninstall(self):
+        try:
+            self.log.info("Attempting to uninstall with plugin " + self.name + "'s \"_uninstall\" function.\n")
+            if hasattr(self.Plugin, "_uninstall"):
+                await self.Plugin._uninstall(self.Plugin)
+                self.log.info("Uninstalled " + self.name + "\n")
+            else:
+                self.log.info("Could not find \"_uninstall\" in " + self.name + "'s main.py" + "\n")
+        except:
+            self.log.error("Failed to uninstall " + self.name + "!\n" + format_exc())
+            exit(0)
+
+    async def on_new_message(self, message : str) -> str|None:
         data = loads(message)
 
         if "stop" in data:
             self.log.info("Calling Loader unload function.")
             await self._unload()
+
+            if data.get('uninstall'):
+                self.log.info("Calling Loader uninstall function.")
+                await self._uninstall()
+
             get_event_loop().stop()
             while get_event_loop().is_running():
                 await sleep(0)
@@ -166,4 +183,4 @@ class SandboxedPlugin:
             d["res"] = str(e)
             d["success"] = False
         finally:
-            return dumps(d, ensure_ascii=False)
+            return dumps(d, ensure_ascii=False)