Added the ability to refresh metadata

app/scanner.py

@@ -1,6 +1,7 @@
 
 
 import os
+from typing import Set
 import time
 import signal
 import sys
@@ -20,13 +21,19 @@ JOB_TTL = int(os.getenv("JOB_TTL", "86400"))               # 24 hours
 RESULT_TTL = int(os.getenv("RESULT_TTL", "86400"))         # 24 hours
 FAILURE_TTL = int(os.getenv("FAILURE_TTL", "86400"))       # 24 hours
 
+# Optional refresh of existing items to fetch metadata/subtitles/thumbnails
+REFRESH_EXISTING = os.getenv("REFRESH_EXISTING", "1").strip() not in ("0", "false", "False", "")
+REFRESH_TTL = int(os.getenv("REFRESH_TTL", "21600"))          # 6 hours
+REFRESH_FAILURE_TTL = int(os.getenv("REFRESH_FAILURE_TTL", "21600"))
+
 # Media types to track
 MEDIA_EXT = {
     ".mp3", ".m4a", ".mp4", ".mkv", ".wav", ".flac", ".webm", ".ogg", ".opus"
 }
 
 # In-memory seen set to avoid re-enqueueing during a single run
-_seen: set[str] = set()
+_seen: Set[str] = set()
+_seen_refresh: Set[str] = set()
 
 
 def already_transcribed(p: Path) -> bool:
@@ -35,6 +42,28 @@ def already_transcribed(p: Path) -> bool:
     return base_json.exists()
 
 
+# Helper to decide when to refresh sidecars
+def needs_refresh(p: Path) -> bool:
+    """
+    Decide whether to refresh sidecars for a media file:
+    - If metadata (*.info.json) is missing
+    - If no subtitle SRT is present next to media (either .srt or .en.srt)
+    - If no thumbnail JPG/PNG is present next to media
+    """
+    stem = p.with_suffix("")
+    info_json = stem.with_suffix(".info.json")
+    # Accept any language-suffixed SRT as well
+    srt_plain = stem.with_suffix(".srt")
+    srt_en = p.with_suffix(".en.srt")
+    has_any_srt = srt_plain.exists() or srt_en.exists() or any(p.parent.glob(p.stem + ".*.srt"))
+    thumb_jpg = stem.with_suffix(".jpg")
+    thumb_png = stem.with_suffix(".png")
+    missing_info = not info_json.exists()
+    missing_subs = not has_any_srt
+    missing_thumb = not (thumb_jpg.exists() or thumb_png.exists())
+    return missing_info or missing_subs or missing_thumb
+
+
 def iter_media_files(root: Path):
     for path in root.rglob("*"):
         if not path.is_file():
@@ -57,7 +86,23 @@ def enqueue_new_files():
             continue
         if already_transcribed(p):
             _seen.add(key)
-            print(f"[scanner] Skip (already transcribed): {p}", flush=True)
+            if REFRESH_EXISTING and needs_refresh(p):
+                if key not in _seen_refresh:
+                    # Ask worker to refresh metadata/subtitles/thumbnails without redownloading media
+                    q.enqueue(
+                        "worker.refresh_media",
+                        key,
+                        job_timeout=JOB_TIMEOUT,
+                        ttl=REFRESH_TTL,
+                        result_ttl=RESULT_TTL,
+                        failure_ttl=REFRESH_FAILURE_TTL,
+                    )
+                    _seen_refresh.add(key)
+                    print(f"[scanner] Refresh enqueued: {p}", flush=True)
+                else:
+                    print(f"[scanner] Skip (already queued refresh): {p}", flush=True)
+            else:
+                print(f"[scanner] Skip (already transcribed): {p}", flush=True)
             continue
         # Enqueue the worker to process this local file (with generous timeouts)
         q.enqueue(