async def __call__(self, receive: Receive, send: Send) -> None:
if self.check_directory is not None:
await self.check_directory_configured_correctly()
try:
stat_result = await aio_stat(self.path)
except FileNotFoundError:
response = PlainTextResponse("Not Found", status_code=404) # type: Response
else:
mode = stat_result.st_mode
if not stat.S_ISREG(mode):
response = PlainTextResponse("Not Found", status_code=404)
else:
stat_headers = FileResponse.get_stat_headers(stat_result)
if self.is_not_modified(stat_headers):
response = self.not_modified_response(stat_headers)
else:
response = FileResponse(
self.path, stat_result=stat_result, method=self.scope["method"]
)
await response(receive, send)
