feat: modernize error page (#2949)

* can't figure this out!

* raise here so it gets picked up by exceptions

* add few more info for error rendering

* add a few more checks for browser

not fail safe just one more layer

* cleaner error display

... hopefully

* add go to extension

* keep buttons add go to extension

* feat: identify extensions that are not installed

* fix: status code

* fix: full path

* add account/logout button if 401

prevent getting stuck

* fix: ext access

* fix user button

* fix: 404 page

* fix: json 404 response

* fix: dumb rendering

* fix: `/api` request always json

* fix: extension api path

* test: check regtest

* test: investgate

* something made ws slower?

* fix: change error code

---------

Co-authored-by: Vlad Stan <stan.v.vlad@gmail.com>
Co-authored-by: dni ⚡ <office@dnilabs.com>
Co-authored-by: Arc <33088785+arcbtc@users.noreply.github.com>

lnbits/decorators.py

@@ -28,6 +28,7 @@ from lnbits.core.models import (
     WalletTypeInfo,
 )
 from lnbits.db import Connection, Filter, Filters, TFilterModel
+from lnbits.helpers import path_segments
 from lnbits.settings import AuthMethods, settings
 
 oauth2_scheme = OAuth2PasswordBearer(tokenUrl="api/v1/auth", auto_error=False)
@@ -261,18 +262,18 @@ async def check_user_extension_access(
             success=False, message=f"User not authorized for extension '{ext_id}'."
         )
 
-    if settings.is_extension_id(ext_id):
+    if settings.is_installed_extension_id(ext_id):
         ext_ids = await get_user_active_extensions_ids(user_id, conn=conn)
         if ext_id not in ext_ids:
             return SimpleStatus(
-                success=False, message=f"User extension '{ext_id}' not enabled."
+                success=False, message=f"Extension '{ext_id}' not enabled."
             )
 
     return SimpleStatus(success=True, message="OK")
 
 
 async def _check_user_extension_access(user_id: str, path: str):
-    ext_id = _path_segments(path)[0]
+    ext_id = path_segments(path)[0]
     status = await check_user_extension_access(user_id, ext_id)
     if not status.success:
         raise HTTPException(
@@ -331,16 +332,9 @@ async def _check_account_api_access(
     if not acl:
         raise HTTPException(HTTPStatus.FORBIDDEN, "Invalid token id.")
 
-    path = "/" + "/".join(_path_segments(path)[:3])
+    path = "/" + "/".join(path_segments(path)[:3])
     endpoint = acl.get_endpoint(path)
     if not endpoint:
         raise HTTPException(HTTPStatus.FORBIDDEN, "Path not allowed.")
     if not endpoint.supports_method(method):
         raise HTTPException(HTTPStatus.FORBIDDEN, "Method not allowed.")
-
-
-def _path_segments(path: str) -> list[str]:
-    segments = path.split("/")
-    if segments[1] == "upgrades":
-        return segments[3:]
-    return segments[1:]