# ========= 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. =========

import time
from datetime import datetime, timezone

from mirage.accessor.ram import RAMAccessor
from mirage.observe.context import record
from mirage.types import PathSpec


def _norm(path: str) -> str:
    return "/" + path.strip("/")


def _parent(path: str) -> str:
    parts = path.rsplit("/", 1)
    return parts[0] or "/"


async def write_bytes(accessor: RAMAccessor, path: PathSpec,
                      data: bytes) -> None:
    if isinstance(path, str):
        path = PathSpec(original=path, directory=path)
    if isinstance(path, PathSpec):
        path = path.strip_prefix
    store = accessor.store
    start_ms = int(time.monotonic() * 1000)
    p = _norm(path)
    parent = _parent(p)
    if parent != "/" and parent not in store.dirs:
        raise FileNotFoundError(f"parent directory does not exist: {parent}")
    store.files[p] = data
    store.modified[p] = datetime.now(timezone.utc).isoformat()
    record("write", path, "ram", len(data), start_ms)
