# ========= Copyright 2026 @ Strukto.AI All Rights Reserved. =========
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ========= Copyright 2026 @ Strukto.AI All Rights Reserved. =========

from functools import partial

from mirage.accessor.sharepoint import SharePointAccessor
from mirage.core.sharepoint.readdir import readdir
from mirage.core.sharepoint.stat import stat
from mirage.watch.base import DeltaHook
from mirage.watch.delta import ListingDeltaHook
from mirage.watch.walk import ReaddirWalk


def build_delta_hook(accessor: SharePointAccessor) -> DeltaHook:
    """Build the SharePoint delta hook.

    Same Graph drive surface as OneDrive, so the same ``cTag``
    fingerprint and the same standing offer of a native ``/delta`` fast
    path; see ``mirage.core.onedrive.watch``.

    Args:
        accessor (SharePointAccessor): Backend handle.
    """
    return ListingDeltaHook(
        ReaddirWalk(partial(readdir, accessor), partial(stat, accessor)))
