# ========= 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 mirage.core.hierarchy.codec import DATE, Codec
from mirage.core.hierarchy.scope import Scope, Slot, make_detect_scope
from mirage.types import FileType

EMAIL_JSON = Codec(suffix=".email.json")

_FOLDER = (Slot("folder"), )
_DAY = _FOLDER + (Slot("day", DATE), )

# One description of the tree: readdir, stat, read and the search
# push-down all classify through it, so the file surface and the command
# surface cannot disagree about what a path means. The message scope is
# declared before the attachment dir because only the suffix separates
# the two at that depth.
SCOPES = (
    Scope(kind="folder", segments=_FOLDER),
    Scope(kind="day", segments=_DAY),
    Scope(kind="message",
          segments=_DAY + (Slot("message", EMAIL_JSON, id_key="uid"), ),
          leaf=True,
          filetype=FileType.JSON),
    Scope(kind="attachment_dir",
          segments=_DAY + (Slot("attachment_dir", id_key="uid"), )),
    Scope(kind="attachment",
          segments=_DAY +
          (Slot("attachment_dir", id_key="uid"), Slot("filename")),
          leaf=True),
)

detect_scope = make_detect_scope(SCOPES)

# Kinds the mailbox search push-down may answer for: one folder or one
# of its days. IMAP search selects a folder, so the mount root cannot
# push down, and a message or attachment names one node.
NATIVE_KINDS = frozenset({"folder", "day"})
