rssVideos: Allow skipping feed fetching

For dev speed

config/scripts/rssVideos

@@ -31,7 +31,7 @@ import yt_dlp
 log = logging.getLogger(__name__)
 
 # TODO Lockfile, or a way to parallel watch and download
-
+# TODO Save ytdl infos and view info separately
 
 def configure_logging(args: configargparse.Namespace) -> None:
     # Configure logging
@@ -491,6 +491,12 @@ def get_args() -> configargparse.Namespace:
         help="Fetch video info again",
         action="store_true",
     )
+    parser.add(
+        "--no-refresh",
+        dest="refresh",
+        help="Don't fetch feed",
+        action="store_false",
+    )
     parser.add(
         "--videos",
         help="Directory to store videos",
@@ -574,14 +580,22 @@ def main() -> None:
 
     database = RVDatabase(args)
     cache = RVDatabase.load()
-    try:
-        database.read_feed()
-    except urllib.error.URLError as err:
-        if args.action == "download" or not cache:
-            raise err
-        else:
-            log.warning("Cannot fetch RSS feed, using cached feed.", err)
+    feed_fetched = False
+    if args.refresh:
+        try:
+            database.read_feed()
+            feed_fetched = True
+        except urllib.error.URLError as err:
+            if args.action == "download":
+                raise RuntimeError("Couldn't fetch feed, refusing to download")
+                # This is a quirky failsafe in case of no internet connection,
+                # so the script doesn't go noting that no element is a video.
+    if not feed_fetched:
+        if cache:
+            log.warning("Using cached feed.")
             database.import_cache(cache)
+        else:
+            raise FileNotFoundError("Feed not fetched and no cached feed.")
     if cache:
         database.salvage_cache(cache)
         database.clean_cache(cache)