mirror of
https://github.com/etesync/server
synced 2024-11-25 18:28:46 +00:00
62 lines
1.8 KiB
Python
62 lines
1.8 KiB
Python
import typing as t
|
|
|
|
from django.db.models import QuerySet
|
|
from fastapi import status
|
|
|
|
from etebase_server.django.models import Stoken
|
|
|
|
from .exceptions import HttpError
|
|
|
|
# TODO missing stoken_annotation type
|
|
StokenAnnotation = t.Any
|
|
|
|
|
|
def get_stoken_obj(stoken: t.Optional[str]) -> t.Optional[Stoken]:
|
|
if stoken:
|
|
try:
|
|
return Stoken.objects.get(uid=stoken)
|
|
except Stoken.DoesNotExist:
|
|
raise HttpError("bad_stoken", "Invalid stoken.", status_code=status.HTTP_400_BAD_REQUEST)
|
|
|
|
return None
|
|
|
|
|
|
def filter_by_stoken(
|
|
stoken: t.Optional[str], queryset: QuerySet, stoken_annotation: StokenAnnotation
|
|
) -> t.Tuple[QuerySet, t.Optional[Stoken]]:
|
|
stoken_rev = get_stoken_obj(stoken)
|
|
|
|
queryset = queryset.annotate(max_stoken=stoken_annotation).order_by("max_stoken")
|
|
|
|
if stoken_rev is not None:
|
|
queryset = queryset.filter(max_stoken__gt=stoken_rev.id)
|
|
|
|
return queryset, stoken_rev
|
|
|
|
|
|
def get_queryset_stoken(queryset: t.Iterable[t.Any]) -> t.Optional[Stoken]:
|
|
maxid = -1
|
|
for row in queryset:
|
|
rowmaxid = getattr(row, "max_stoken") or -1
|
|
maxid = max(maxid, rowmaxid)
|
|
new_stoken = Stoken.objects.get(id=maxid) if (maxid >= 0) else None
|
|
|
|
return new_stoken or None
|
|
|
|
|
|
def filter_by_stoken_and_limit(
|
|
stoken: t.Optional[str], limit: int, queryset: QuerySet, stoken_annotation: StokenAnnotation
|
|
) -> t.Tuple[list, t.Optional[Stoken], bool]:
|
|
queryset, stoken_rev = filter_by_stoken(stoken=stoken, queryset=queryset, stoken_annotation=stoken_annotation)
|
|
|
|
result = list(queryset[: limit + 1])
|
|
if len(result) < limit + 1:
|
|
done = True
|
|
else:
|
|
done = False
|
|
result = result[:-1]
|
|
|
|
new_stoken_obj = get_queryset_stoken(result) or stoken_rev
|
|
|
|
return result, new_stoken_obj, done
|