Add missing type hints in http component (#50411)

homeassistant/components/http/static.py

@@ -1,21 +1,25 @@
 """Static file handling for HTTP component."""
+from __future__ import annotations
+
+from collections.abc import Mapping
 from pathlib import Path
+from typing import Final
 
 from aiohttp import hdrs
-from aiohttp.web import FileResponse
+from aiohttp.web import FileResponse, Request, StreamResponse
 from aiohttp.web_exceptions import HTTPForbidden, HTTPNotFound
 from aiohttp.web_urldispatcher import StaticResource
 
-# mypy: allow-untyped-defs
-
-CACHE_TIME = 31 * 86400  # = 1 month
-CACHE_HEADERS = {hdrs.CACHE_CONTROL: f"public, max-age={CACHE_TIME}"}
+CACHE_TIME: Final = 31 * 86400  # = 1 month
+CACHE_HEADERS: Final[Mapping[str, str]] = {
+    hdrs.CACHE_CONTROL: f"public, max-age={CACHE_TIME}"
+}
 
 
 class CachingStaticResource(StaticResource):
     """Static Resource handler that will add cache headers."""
 
-    async def _handle(self, request):
+    async def _handle(self, request: Request) -> StreamResponse:
         rel_url = request.match_info["filename"]
         try:
             filename = Path(rel_url)
@@ -42,7 +46,6 @@ class CachingStaticResource(StaticResource):
             return FileResponse(
                 filepath,
                 chunk_size=self._chunk_size,
-                # type ignore: https://github.com/aio-libs/aiohttp/pull/3976
-                headers=CACHE_HEADERS,  # type: ignore
+                headers=CACHE_HEADERS,
             )
         raise HTTPNotFound