Handle directory-modify events and search for modified file

src/DebouncedHandler.py

@@ -2,6 +2,7 @@ import threading
 import logging
 
 from watchdog.events import PatternMatchingEventHandler
+from pathlib import Path
 
 from config import *
 from helpers import export_single_zone
@@ -29,11 +30,53 @@ def schedule_export(trigger_path):
         debounce_timer.start()
         logging.debug("Debounce timer started/reset (%.1fs)", DEBOUNCE_SECONDS)
 
+def _most_recent_file_under(path: Path, max_depth: int = 2) -> Path | None:
+    if not path.exists():
+        return None
+    best = None  # (mtime, filepath)
+    base_depth = len(path.parts)
+    for root, dirs, files in os.walk(path):
+        depth = len(Path(root).parts) - base_depth
+        if depth > max_depth:
+            # prune deeper traversal
+            dirs[:] = []
+            continue
+        for fn in files:
+            p = Path(root) / fn
+            try:
+                m = p.stat().st_mtime
+            except Exception:
+                continue
+            if best is None or m > best[0]:
+                best = (m, p)
+    return best[1] if best else None
+
 class DebouncedHandler(PatternMatchingEventHandler):
     def __init__(self, patterns=None, ignore_patterns=None, ignore_directories=False, case_sensitive=True):
         super().__init__(patterns=patterns or ["*"], ignore_patterns=ignore_patterns or [], ignore_directories=ignore_directories, case_sensitive=case_sensitive)
 
     def on_any_event(self, event):
-        # When any matching event occurs, start/reset debounce timer
-        logging.debug(f"Filesystem event: {event.event_type} on {event.src_path}")
-        schedule_export(event.src_path)
+        try:
+            src = getattr(event, "src_path", None)
+            dest = getattr(event, "dest_path", None)
+            trigger = None
+
+            if dest:
+                trigger = dest
+            elif src:
+                p = Path(src)
+                if p.is_file():
+                    trigger = str(p)
+                else:
+                    candidate = _most_recent_file_under(p)
+                    if candidate:
+                        trigger = str(candidate)
+                    else:
+                        trigger = str(src)
+            else:
+                trigger = WATCH_DIR
+            logging.debug(f"Filesystem event: {event.event_type} on {trigger}")
+            schedule_export(event.src_path)
+        except Exception as e:
+            logging.exception(f"Error handling filesystem event; scheduling export for watch dir as fallback: {e}")
+            schedule_export(WATCH_DIR)