Add file watching/automatic reload, remove manual reload, split utils into multiple files, add much more metadata such as last play time and play times

utils/file_watching.py

@@ -0,0 +1,46 @@
+from watchdog.events import PatternMatchingEventHandler
+from watchdog.observers import Observer
+
+from typing import Callable
+
+from utils.constants import audio_extensions
+
+import os
+
+class DirectoryWatcher(PatternMatchingEventHandler):
+    def __init__(self, trigger_function: Callable[[str, str], None]):
+        patterns = [f"*.{ext}" for ext in audio_extensions]
+        super().__init__(patterns=patterns, ignore_directories=True, case_sensitive=False)
+        self.trigger_function = trigger_function
+
+    def on_created(self, event):
+        self.trigger_function("create", event.src_path)
+        
+    def on_deleted(self, event):
+        self.trigger_function("delete", event.src_path)
+
+def watch_directories(directory_paths: list[str], func: Callable[[str, str], None]):
+    event_handler = DirectoryWatcher(func)
+    observer = Observer()
+    
+    for directory_path in directory_paths:
+        observer.schedule(event_handler, path=directory_path)
+
+    observer.start()
+    return observer
+
+def file_hit(event_type: str, file_path: str, directories: dict[str, list[str]], func: Callable[[str, str], None]):
+    directory = os.path.dirname(file_path)
+    if directory in directories and file_path in directories[directory]:
+        func(event_type, file_path)
+
+def watch_files(file_paths: list[str], func: Callable[[str, str], None]):
+    directories: dict[str, list[str]] = {}
+    for file_path in file_paths:
+        directory = os.path.dirname(file_path)
+        directories.setdefault(directory, []).append(file_path)
+
+    return watch_directories(
+        list(directories.keys()),
+        lambda event_type, file_path: file_hit(event_type, file_path, directories, func)
+    )