inital commit

server/app/mailer/services/zip_service.py

@@ -0,0 +1,25 @@
+from __future__ import annotations
+
+from pathlib import Path
+
+try:
+    import pyzipper
+except ImportError:  # pragma: no cover
+    pyzipper = None
+
+
+def create_encrypted_zip(output_path: Path, files: list[Path], password: str) -> Path:
+    output_path.parent.mkdir(parents=True, exist_ok=True)
+    if pyzipper is None:
+        raise RuntimeError("pyzipper is required for writing encrypted ZIP files")
+    with pyzipper.AESZipFile(
+        output_path,
+        "w",
+        compression=pyzipper.ZIP_DEFLATED,
+        encryption=pyzipper.WZ_AES,
+    ) as zip_file:
+        if password:
+            zip_file.setpassword(password.encode("utf-8"))
+        for file_path in files:
+            zip_file.write(file_path, arcname=file_path.name)
+    return output_path