Allow forcing HTTPS in URL generation (#92)

* Force HTTPS feature
* Add docs

custom_components/auth_oidc/__init__.py

@@ -24,6 +24,8 @@ from .config import (
     ROLES,
     NETWORK,
     FEATURES_INCLUDE_GROUPS_SCOPE,
+    FEATURES_DISABLE_FRONTEND_INJECTION,
+    FEATURES_FORCE_HTTPS,
 )
 
 # pylint: enable=useless-import-alias
@@ -93,14 +95,23 @@ async def async_setup(hass: HomeAssistant, config):
 
     # Register the views
     is_frontend_injection_enabled = (
-        features_config.get("disable_frontend_changes", False) is False
+        features_config.get(FEATURES_DISABLE_FRONTEND_INJECTION, False) is False
     )
     name = config[DOMAIN].get(DISPLAY_NAME, DEFAULT_TITLE)
     name = re.sub(r"[^A-Za-z0-9 _\-\(\)]", "", name)
 
-    hass.http.register_view(OIDCWelcomeView(name, is_frontend_injection_enabled))
-    hass.http.register_view(OIDCRedirectView(oidc_client))
-    hass.http.register_view(OIDCCallbackView(oidc_client, provider))
+    force_https = features_config.get(FEATURES_FORCE_HTTPS, False)
+
+    hass.http.register_view(
+        OIDCWelcomeView(
+            name,
+            # Welcome view is not enabled if frontend injection is enabled
+            not is_frontend_injection_enabled,
+            force_https,
+        )
+    )
+    hass.http.register_view(OIDCRedirectView(oidc_client, force_https))
+    hass.http.register_view(OIDCCallbackView(oidc_client, provider, force_https))
     hass.http.register_view(OIDCFinishView())
 
     _LOGGER.info("Registered OIDC views")