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box/spotify/base.py

@@ -0,0 +1,23 @@
+"""Spotify backend interface (logical)."""
+
+from __future__ import annotations
+
+from typing import Protocol
+
+
+class SpotifyBackend(Protocol):
+    def set_tokens(
+        self,
+        access_token: str,
+        refresh_token: str,
+        expires_at: int,
+        account_id: str | None = None,
+    ) -> None:
+        raise NotImplementedError
+
+    def clear(self) -> None:
+        raise NotImplementedError
+
+    @property
+    def status(self) -> str:
+        raise NotImplementedError