Refactor package architecture

Signed-off-by: Loren Eteval <loren.eteval@proton.me>

Furious/Repository/Subscriptions.py

@@ -0,0 +1,83 @@
+# Copyright (C) 2024–present  Loren Eteval & contributors <loren.eteval@proton.me>
+#
+# This file is part of Furious.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+"""Persist subscription definitions."""
+
+from __future__ import annotations
+
+from Furious.Frozenlib import *
+from Furious.Interface import *
+from Furious.Domain.Encoding import *
+
+__all__ = ['UserSubs']
+
+registerAppSettings('CustomSubscription')
+
+
+class UserSubEntry:
+    """Describe one user sub entry."""
+
+    remark: str
+    webURL: str
+    autoupdate: str
+    proxy: str
+
+
+class UserSub:
+    """Represent user sub."""
+
+    unique: dict[str, dict]
+
+
+class UserSubs(Mixins.CleanupOnExit, StorageBackend):
+    # unique: { remark, webURL }
+    """Manage the persisted subscription collection."""
+
+    def __init__(self, *args, **kwargs):
+        """Initialize the UserSubs."""
+        super().__init__(*args, **kwargs)
+
+        def restore():
+            """Restore the user subs."""
+            try:
+                return UJSONEncoder.decode(
+                    PyBase64Encoder.decode(AppSettings.get('CustomSubscription'))
+                )
+            except Exception:
+                # Any non-exit exceptions
+
+                return {}
+
+        self._data = restore()
+
+    def sync(self):
+        """Persist the current user subs data."""
+        AppSettings.set(
+            'CustomSubscription',
+            PyBase64Encoder.encode(
+                UJSONEncoder.encode(self._data).encode(),
+            ),
+        )
+
+    def data(self) -> dict[str, dict]:
+        # Shallow copy
+        """Return the data managed by the user subs."""
+        return self._data
+
+    def cleanup(self):
+        """Release resources owned by the user subs."""
+        self.sync()