Re-add the CloudSync functionality

It got removed in the marketplace upgrade.

CURA-9146

plugins/Marketplace/CloudSync/CloudApiClient.py

@@ -0,0 +1,52 @@
+from UM.Logger import Logger
+from UM.TaskManagement.HttpRequestManager import HttpRequestManager
+from UM.TaskManagement.HttpRequestScope import JsonDecoratorScope
+from cura.CuraApplication import CuraApplication
+from cura.UltimakerCloud.UltimakerCloudScope import UltimakerCloudScope
+from ..CloudApiModel import CloudApiModel
+
+
+class CloudApiClient:
+    """Manages Cloud subscriptions
+
+    When a package is added to a user's account, the user is 'subscribed' to that package.
+    Whenever the user logs in on another instance of Cura, these subscriptions can be used to sync the user's plugins
+
+    Singleton: use CloudApiClient.getInstance() instead of CloudApiClient()
+    """
+
+    __instance = None
+
+    @classmethod
+    def getInstance(cls, app: CuraApplication):
+        if not cls.__instance:
+            cls.__instance = CloudApiClient(app)
+        return cls.__instance
+
+    def __init__(self, app: CuraApplication) -> None:
+        if self.__instance is not None:
+            raise RuntimeError("This is a Singleton. use getInstance()")
+
+        self._scope = JsonDecoratorScope(UltimakerCloudScope(app))  # type: JsonDecoratorScope
+
+        app.getPackageManager().packageInstalled.connect(self._onPackageInstalled)
+
+    def unsubscribe(self, package_id: str) -> None:
+        url = CloudApiModel.userPackageUrl(package_id)
+        HttpRequestManager.getInstance().delete(url = url, scope = self._scope)
+
+    def _subscribe(self, package_id: str) -> None:
+        """You probably don't want to use this directly. All installed packages will be automatically subscribed."""
+
+        Logger.debug("Subscribing to {}", package_id)
+        data = "{\"data\": {\"package_id\": \"%s\", \"sdk_version\": \"%s\"}}" % (package_id, CloudApiModel.sdk_version)
+        HttpRequestManager.getInstance().put(
+            url = CloudApiModel.api_url_user_packages,
+            data = data.encode(),
+            scope = self._scope
+        )
+
+    def _onPackageInstalled(self, package_id: str):
+        if CuraApplication.getInstance().getCuraAPI().account.isLoggedIn:
+            # We might already be subscribed, but checking would take one extra request. Instead, simply subscribe
+            self._subscribe(package_id)