Add warning popup when old settings.json detected

src/backend/backend.py

@@ -29,7 +29,9 @@ from .models.model import Model
 from .models.model_store import ModelStore
 from .presence import Presence
 from .sso_server import SSOServer
-from .user_files import Accounts, History, NewTheme, Settings, Theme, UIState
+from .user_files import (
+    Accounts, History, NewTheme, Pre070Settings, Settings, Theme, UIState,
+)
 
 # Logging configuration
 log.getLogger().setLevel(log.INFO)
@@ -112,6 +114,7 @@ class Backend:
         self.theme          = Theme(self, self.settings.General.theme)
         # self.new_theme      = NewTheme(self, self.settings.General.new_theme)
         self.new_theme      = NewTheme(self, ".new.py")  # TODO
+        Pre070Settings(self)
 
         self.clients: Dict[str, MatrixClient] = {}
 

src/backend/pyotherside_events.py

@@ -63,6 +63,12 @@ class LoopException(PyOtherSideEvent):
     traceback: Optional[str]       = None
 
 
+@dataclass
+class Pre070SettingsDetected(PyOtherSideEvent):
+    """Warn that a pre-0.7.0 settings.json file exists."""
+    path: Path = field()
+
+
 @dataclass
 class UserFileChanged(PyOtherSideEvent):
     """Indicate that a config or data file changed on disk."""

src/backend/qml_bridge.py

@@ -145,7 +145,7 @@ class QMLBridge:
         rc = lambda c: asyncio.run_coroutine_threadsafe(c, self._loop)  # noqa
 
         try:
-            from devtools import debug # noqa
+            from devtools import debug  # noqa
             d = debug  # noqa
         except ModuleNotFoundError:
             log.warning("Module python-devtools not found, can't use debug()")

src/backend/user_files.py

@@ -18,7 +18,9 @@ import pyotherside
 from watchgod import Change, awatch
 
 from .pcn.section import Section
-from .pyotherside_events import LoopException, UserFileChanged
+from .pyotherside_events import (
+    LoopException, Pre070SettingsDetected, UserFileChanged,
+)
 from .theme_parser import convert_to_qml
 from .utils import (
     aiopen, atomic_write, deep_serialize_for_qml, dict_update_recursive,
@@ -396,6 +398,17 @@ class Accounts(ConfigFile, JSONFile):
         self.save()
 
 
+@dataclass
+class Pre070Settings(ConfigFile):
+    """Detect and warn about the presence of a pre-0.7.0 settings.json file."""
+
+    filename: str = "settings.json"
+
+    def __post_init__(self) -> None:
+        if self.path.exists():
+            Pre070SettingsDetected(self.path)
+
+
 @dataclass
 class Settings(ConfigFile, PCNFile):
     """General config file for UI and backend settings"""