Add js to load

custom_components/browser_mod/__init__.py

@@ -1,8 +1,53 @@
 import logging
 
+# import .mod_view
+
+from aiohttp import web
+import aiofiles
+from homeassistant.components.http import HomeAssistantView
+
+REQUIREMENTS = ["aiofiles"]
+DATA_EXTRA_MODULE_URL = 'frontend_extra_module_url'
+
 _LOGGER = logging.getLogger(__name__)
 
 async def async_setup(hass, config):
     _LOGGER.error(f"Setting up browser_mod")
 
+    setup(hass, '/browser_mod.js')
+
+    _LOGGER.error(f"Registered frontend script")
+
+
     return True
+
+def setup(hass, url):
+    if DATA_EXTRA_MODULE_URL not in hass.data:
+        hass.data[DATA_EXTRA_MODULE_URL] = set()
+    url_set = hass.data[DATA_EXTRA_MODULE_URL]
+    url_set.add(url)
+
+    hass.http.register_view(ModView(hass, url))
+
+class ModView(HomeAssistantView):
+
+    name = "browser_mod_script"
+    requires_auth = False
+
+    def __init__(self, hass, url):
+        self.url = url
+        self.config_dir = hass.config.path()
+
+    async def get(self, request):
+        path = "{}/custom_components/browser_mod/browser_mod.js".format(self.config_dir)
+
+        filecontent = ""
+
+        try:
+            async with aiofiles.open(path, mode="r", encoding="utf-8", errors="ignore") as localfile:
+                filecontent = await localfile.read()
+                localfile.close()
+        except Exception as exception:
+            pass
+
+        return web.Response(body=filecontent, content_type="text/javascript", charset="utf-8")