Add scheduled watchlist refresh support

app.py

@@ -57,7 +57,7 @@ from app_support import (
     write_json,
 )
 from http_handler import HandlerContext, build_handler_class, server_host, server_port
-from queue_jobs import DownloadQueue, WatchlistRefreshJobs
+from queue_jobs import DownloadQueue, WatchlistAutoRefreshScheduler, WatchlistRefreshJobs
 from title_matching import (
     base_title_variants,
     normalize_title_key,
@@ -82,6 +82,7 @@ CONFIG = None
 WATCHLIST = None
 DOWNLOAD_QUEUE = None
 WATCHLIST_REFRESH = None
+WATCHLIST_AUTO_REFRESH = None
 
 
 def graph_request(query, variables, timeout=25):
@@ -1780,10 +1781,14 @@ def get_config_snapshot(fallback=None):
 
 def save_runtime_config(config):
     normalized = normalize_config(config)
+    scheduler = None
     with RUNTIME_LOCK:
         global CONFIG
         CONFIG = dict(normalized)
         write_json(CONFIG_PATH, CONFIG)
+        scheduler = WATCHLIST_AUTO_REFRESH
+    if scheduler is not None:
+        scheduler.notify_config_changed()
     return dict(CONFIG)
 
 
@@ -1793,6 +1798,7 @@ def runtime_state():
         "watchlist": WATCHLIST,
         "download_queue": DOWNLOAD_QUEUE,
         "watchlist_refresh": WATCHLIST_REFRESH,
+        "watchlist_auto_refresh": WATCHLIST_AUTO_REFRESH,
     }
 
 
@@ -1809,35 +1815,55 @@ def build_runtime(start_workers=None):
         start_worker=worker_state,
     )
     watchlist_refresh = WatchlistRefreshJobs(watchlist, start_worker=worker_state)
+    watchlist_auto_refresh = WatchlistAutoRefreshScheduler(
+        config_getter=lambda: get_config_snapshot(config),
+        refresh_start_fn=watchlist_refresh.start,
+        start_worker=worker_state,
+    )
     return {
         "config": config,
         "watchlist": watchlist,
         "download_queue": download_queue,
         "watchlist_refresh": watchlist_refresh,
+        "watchlist_auto_refresh": watchlist_auto_refresh,
     }
 
 
 def initialize_runtime(start_workers=None):
-    global CONFIG, WATCHLIST, DOWNLOAD_QUEUE, WATCHLIST_REFRESH
+    global CONFIG, WATCHLIST, DOWNLOAD_QUEUE, WATCHLIST_REFRESH, WATCHLIST_AUTO_REFRESH
     with RUNTIME_LOCK:
         workers_allowed = background_workers_enabled()
-        if CONFIG is not None and WATCHLIST is not None and DOWNLOAD_QUEUE is not None and WATCHLIST_REFRESH is not None:
+        if (
+            CONFIG is not None
+            and WATCHLIST is not None
+            and DOWNLOAD_QUEUE is not None
+            and WATCHLIST_REFRESH is not None
+            and WATCHLIST_AUTO_REFRESH is not None
+        ):
             if start_workers and workers_allowed:
                 WATCHLIST.worker_enabled = True
                 WATCHLIST.ensure_worker()
                 DOWNLOAD_QUEUE.ensure_worker()
                 WATCHLIST_REFRESH.ensure_worker()
+                WATCHLIST_AUTO_REFRESH.ensure_worker()
             return runtime_state()
         runtime = build_runtime(start_workers=start_workers)
         CONFIG = runtime["config"]
         WATCHLIST = runtime["watchlist"]
         DOWNLOAD_QUEUE = runtime["download_queue"]
         WATCHLIST_REFRESH = runtime["watchlist_refresh"]
+        WATCHLIST_AUTO_REFRESH = runtime["watchlist_auto_refresh"]
         return runtime
 
 
 def ensure_runtime(start_workers=False):
-    if CONFIG is None or WATCHLIST is None or DOWNLOAD_QUEUE is None or WATCHLIST_REFRESH is None:
+    if (
+        CONFIG is None
+        or WATCHLIST is None
+        or DOWNLOAD_QUEUE is None
+        or WATCHLIST_REFRESH is None
+        or WATCHLIST_AUTO_REFRESH is None
+    ):
         return initialize_runtime(start_workers=start_workers)
     if start_workers:
         return initialize_runtime(start_workers=True)
@@ -1847,10 +1873,16 @@ def ensure_runtime(start_workers=False):
 def shutdown_runtime(wait=False, cancel_active_downloads=None):
     services = None
     with RUNTIME_LOCK:
-        if CONFIG is None and WATCHLIST is None and DOWNLOAD_QUEUE is None and WATCHLIST_REFRESH is None:
+        if (
+            CONFIG is None
+            and WATCHLIST is None
+            and DOWNLOAD_QUEUE is None
+            and WATCHLIST_REFRESH is None
+            and WATCHLIST_AUTO_REFRESH is None
+        ):
             return False
-        services = (WATCHLIST, DOWNLOAD_QUEUE, WATCHLIST_REFRESH)
-    watchlist, download_queue, watchlist_refresh = services
+        services = (WATCHLIST, DOWNLOAD_QUEUE, WATCHLIST_REFRESH, WATCHLIST_AUTO_REFRESH)
+    watchlist, download_queue, watchlist_refresh, watchlist_auto_refresh = services
     should_cancel_downloads = bool(wait) if cancel_active_downloads is None else bool(cancel_active_downloads)
     stopped = True
     if watchlist is not None:
@@ -1859,11 +1891,13 @@ def shutdown_runtime(wait=False, cancel_active_downloads=None):
         stopped = download_queue.shutdown(wait=wait, cancel_active=should_cancel_downloads) and stopped
     if watchlist_refresh is not None:
         stopped = watchlist_refresh.shutdown(wait=wait) and stopped
+    if watchlist_auto_refresh is not None:
+        stopped = watchlist_auto_refresh.shutdown(wait=wait) and stopped
     return stopped
 
 
 def reset_runtime(wait=False, cancel_active_downloads=None):
-    global CONFIG, WATCHLIST, DOWNLOAD_QUEUE, WATCHLIST_REFRESH
+    global CONFIG, WATCHLIST, DOWNLOAD_QUEUE, WATCHLIST_REFRESH, WATCHLIST_AUTO_REFRESH
     stopped = shutdown_runtime(wait=wait, cancel_active_downloads=cancel_active_downloads)
     if not stopped:
         if wait:
@@ -1874,6 +1908,7 @@ def reset_runtime(wait=False, cancel_active_downloads=None):
         WATCHLIST = None
         DOWNLOAD_QUEUE = None
         WATCHLIST_REFRESH = None
+        WATCHLIST_AUTO_REFRESH = None
     return True