Move server code to this repo (#95)

move server code to this repo

app/lib/folderslib.py

@@ -0,0 +1,47 @@
+import os
+import pathlib
+from concurrent.futures import ThreadPoolExecutor
+
+from app.db.store import Store
+from app.models import Folder, Track
+from app.settings import SUPPORTED_FILES
+
+
+class GetFilesAndDirs:
+    """
+    Get files and folders from a directory.
+    """
+
+    def __init__(self, path: str) -> None:
+        self.path = path
+
+    def __call__(self) -> tuple[list[Track], list[Folder]]:
+        try:
+            entries = os.scandir(self.path)
+        except FileNotFoundError:
+            return ([], [])
+
+        dirs, files = [], []
+
+        for entry in entries:
+            ext = os.path.splitext(entry.name)[1].lower()
+
+            if entry.is_dir() and not entry.name.startswith("."):
+                dirs.append(entry.path)
+            elif entry.is_file() and ext in SUPPORTED_FILES:
+                files.append(entry.path)
+
+        # sort files by modified time
+        files.sort(
+            key=lambda f: os.path.getmtime(f)  # pylint: disable=unnecessary-lambda
+        )
+
+        tracks = Store.get_tracks_by_filepaths(files)
+
+        with ThreadPoolExecutor() as pool:
+            iterable = pool.map(Store.get_folder, dirs)
+            folders = [i for i in iterable if i is not None]
+
+        folders = filter(lambda f: f.has_tracks, folders)
+
+        return (tracks, folders)  # type: ignore