fix: warning for blocking event loop when downloading backups (#169)

* Fix: Address blocking file operation in log (#145)

- Resolved Home Assistant warning about blocking file operations in the `auto_backup` integration (#145).
- Updated `handlers.py` to replace synchronous `open` calls with `aiofiles.open` for non-blocking file writes.
- Improved compatibility with Home Assistant's asyncio architecture, preventing event loop warnings.
- Verified changes to ensure integration functionality remains intact.

* chore: remove .DS_Store files

* refactor: format with black

* chore: add aiofiles dependency

---------

Co-authored-by: Josh Willox <joshwillox@gmail.com>

Author: Doorshifter

custom_components/auto_backup/handlers.py

@@ -1,3 +1,4 @@
+import aiofiles
 import asyncio
 import logging
 import shutil
@@ -142,12 +143,12 @@ async def download_backup(
                     _LOGGER.error("%s return code %d.", command, request.status)
                     raise HassioAPIError()
 
-                with open(destination, "wb") as file:
+                async with aiofiles.open(destination, "wb") as file:
                     while True:
                         chunk = await request.content.read(CHUNK_SIZE)
                         if not chunk:
                             break
-                        file.write(chunk)
+                        await file.write(chunk)
 
                 _LOGGER.info("Downloaded backup '%s' to '%s'", slug, destination)
                 return

pyproject.toml

@@ -5,6 +5,7 @@ description = ""
 readme = "README.md"
 requires-python = ">=3.12"
 dependencies = [
+    "aiofiles>=24.1.0",
     "colorlog>=6.9.0",
     "homeassistant>=2024.11.2",
 ]