Introduce the SyncOrchestrator

CURA-6983

plugins/Toolbox/src/CloudSync/SyncOrchestrator.py

@@ -0,0 +1,34 @@
+from UM.Extension import Extension
+from UM.PluginRegistry import PluginRegistry
+from cura.CuraApplication import CuraApplication
+from plugins.Toolbox import CloudPackageChecker
+from plugins.Toolbox.src.CloudSync.DiscrepanciesPresenter import DiscrepanciesPresenter
+from plugins.Toolbox.src.CloudSync.SubscribedPackagesModel import SubscribedPackagesModel
+
+
+## Orchestrates the synchronizing of packages from the user account to the installed packages
+# Example flow:
+# - CloudPackageChecker compares a list of packages the user `subscribed` to in their account
+#   If there are `discrepancies` between the account and locally installed packages, they are emitted
+# - DiscrepanciesPresenter shows a list of packages to be added or removed to the user. It emits the `packageMutations`
+#   the user selected to be performed
+# - The SyncOrchestrator uses PackageManager to remove local packages the users wants to see removed
+# - The DownloadPresenter shows a download progress dialog
+# - The LicencePresenter extracts licences from the downloaded packages and presents a licence for each package to
+# - be installed. It emits the `licenceAnswers` {'packageId' : bool} for accept or declines
+# - The CloudPackageManager removes the declined packages from the account
+# - The SyncOrchestrator uses PackageManager to install the downloaded packages.
+# - Bliss / profit / done
+class SyncOrchestrator(Extension):
+
+    def __init__(self, app: CuraApplication):
+        super().__init__()
+
+        self._checker = CloudPackageChecker(app)
+        self._checker.discrepancies.connect(self._onDiscrepancies)
+
+        self._discrepanciesPresenter = DiscrepanciesPresenter(app)
+
+    def _onDiscrepancies(self, model: SubscribedPackagesModel):
+        plugin_path = PluginRegistry.getInstance().getPluginPath(self.getPluginId())
+        self._discrepanciesPresenter.present(plugin_path, model)