1 files changed, 26 insertions, 0 deletions
diff --git a/uploader/files.py b/uploader/files.py
new file mode 100644
index 0000000..b163612
--- /dev/null
+++ b/uploader/files.py
@@ -0,0 +1,26 @@
+"""Utilities to deal with uploaded files."""
+import hashlib
+from pathlib import Path
+from datetime import datetime
+from flask import current_app
+
+from werkzeug.utils import secure_filename
+from werkzeug.datastructures import FileStorage
+
+def save_file(fileobj: FileStorage, upload_dir: Path) -> Path:
+    """Save the uploaded file and return the path."""
+    assert bool(fileobj), "Invalid file object!"
+    hashed_name = hashlib.sha512(
+        f"{fileobj.filename}::{datetime.now().isoformat()}".encode("utf8")
+    ).hexdigest()
+    filename = Path(secure_filename(hashed_name)) # type: ignore[arg-type]
+    if not upload_dir.exists():
+        upload_dir.mkdir()
+
+    filepath = Path(upload_dir, filename)
+    fileobj.save(filepath)
+    return filepath
+
+def fullpath(filename: str):
+    """Get a file's full path. This makes use of `flask.current_app`."""
+    return Path(current_app.config["UPLOAD_FOLDER"], filename).absolute()