cache manager

Dockers/self-hosted-iptv/iptv/schedule.py

@@ -76,23 +76,28 @@ def build_channel_path_list(path_entries: list) -> tuple[list[Path], list[dict]]
     return [p for p, _ in pairs], [c for _, c in pairs]
 
 
+def _path_to_stream_path(p: Path) -> str:
+    """Convert absolute path to stream path (for stream?path=)."""
+    try:
+        if MOVIES_ROOT in p.parents:
+            rel = p.relative_to(MOVIES_ROOT)
+            return "movies/" + str(rel).replace("\\", "/")
+        rel = p.relative_to(SERIES_ROOT)
+        return "series/" + str(rel).replace("\\", "/")
+    except ValueError:
+        return "movies/" + p.name
+
+
 def build_playlist(path_entries: list, base_url: str) -> list[tuple[str, str]]:
     """Build playlist as list of (display_name, stream_url)."""
+    data = build_playlist_data(path_entries)
+    return [(name, f"{base_url}/stream?path={path_str}") for name, path_str in data]
+
+
+def build_playlist_data(path_entries: list) -> list[tuple[str, str]]:
+    """Build playlist data as list of (display_name, path_str) for caching."""
     paths, _ = build_channel_path_list(path_entries)
-    playlist = []
-    for p in paths:
-        try:
-            if MOVIES_ROOT in p.parents:
-                rel = p.relative_to(MOVIES_ROOT)
-                path_str = "movies/" + str(rel).replace("\\", "/")
-            else:
-                rel = p.relative_to(SERIES_ROOT)
-                path_str = "series/" + str(rel).replace("\\", "/")
-        except ValueError:
-            path_str = "movies/" + p.name
-        stream_url = f"{base_url}/stream?path={path_str}"
-        playlist.append((p.stem, stream_url))
-    return playlist
+    return [(p.stem, _path_to_stream_path(p)) for p in paths]
 
 
 def get_duration(path: Path) -> float:
@@ -128,6 +133,11 @@ class ScheduleBuilder:
         self._ttl_sec = SCHEDULE_CACHE_TTL_SEC
         self._channel_repo = None  # injected
 
+    def invalidate_cache(self) -> None:
+        """Clear in-memory schedule cache (e.g. when channels.json changes)."""
+        self._cache.clear()
+        logger.debug("Schedule cache invalidated")
+
     def set_channel_repo(self, repo) -> None:
         """Set the channel repository for schedule building."""
         self._channel_repo = repo