Finally got around to installing This amazing component by @ludeeus

config/custom_components/hacs/handler/download.py

@@ -0,0 +1,88 @@
+"""Download."""
+import os
+import gzip
+import shutil
+
+import aiofiles
+import async_timeout
+from integrationhelper import Logger
+import backoff
+from homeassistant.helpers.aiohttp_client import async_get_clientsession
+from ..hacsbase.exceptions import HacsException
+
+
+@backoff.on_exception(backoff.expo, Exception, max_tries=5)
+async def async_download_file(hass, url):
+    """
+    Download files, and return the content.
+    """
+    logger = Logger("hacs.download.downloader")
+    if url is None:
+        return
+
+    # There is a bug somewhere... TODO: Find that bug....
+    if "tags/" in url:
+        url = url.replace("tags/", "")
+
+    logger.debug(f"Downloading {url}")
+
+    result = None
+
+    with async_timeout.timeout(60, loop=hass.loop):
+        request = await async_get_clientsession(hass).get(url)
+
+        # Make sure that we got a valid result
+        if request.status == 200:
+            result = await request.read()
+        else:
+            raise HacsException(
+                "Got status code {} when trying to download {}".format(
+                    request.status, url
+                )
+            )
+
+    return result
+
+
+async def async_save_file(location, content):
+    """Save files."""
+    logger = Logger("hacs.download.save")
+    logger.debug(f"Saving {location}")
+    mode = "w"
+    encoding = "utf-8"
+    errors = "ignore"
+
+    if not isinstance(content, str):
+        mode = "wb"
+        encoding = None
+        errors = None
+
+    try:
+        async with aiofiles.open(
+            location, mode=mode, encoding=encoding, errors=errors
+        ) as outfile:
+            await outfile.write(content)
+            outfile.close()
+
+        # Create gz for .js files
+        if os.path.isfile(location):
+            if location.endswith(".js") or location.endswith(".css"):
+                with open(location, "rb") as f_in:
+                    with gzip.open(location + ".gz", "wb") as f_out:
+                        shutil.copyfileobj(f_in, f_out)
+
+        # Remove with 2.0
+        if "themes" in location and location.endswith(".yaml"):
+            filename = location.split("/")[-1]
+            base = location.split("/themes/")[0]
+            combined = f"{base}/themes/{filename}"
+            if os.path.exists(combined):
+                logger.info(f"Removing old theme file {combined}")
+                os.remove(combined)
+
+    except Exception as error:  # pylint: disable=broad-except
+        msg = "Could not write data to {} - {}".format(location, error)
+        logger.error(msg)
+        return False
+
+    return os.path.exists(location)