# ========= 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.accessor.base import Accessor
from mirage.cache.index import NULL_INDEX, IndexCacheStore
from mirage.commands.builtin.generic_bind.adapter import (Builder, CommandIO,
                                                          Operation)
from mirage.io.types import ByteSource, IOResult
from mirage.types import PathSpec


async def touch(
    ops: CommandIO,
    accessor: Accessor,
    paths: list[PathSpec],
    *texts: str,
    stdin: bytes | None = None,
    c: bool = False,
    r: str | None = None,
    d: str | None = None,
    index: IndexCacheStore = NULL_INDEX,
    **kwargs,
) -> tuple[ByteSource | None, IOResult]:
    if not ops.is_mounted(accessor) or not paths:
        raise ValueError("touch: missing operand")
    paths = await ops.resolve_glob(accessor, paths, index)
    exists = ops.require(Operation.EXISTS)
    write = ops.require(Operation.WRITE)
    created: dict[str, ByteSource] = {}
    for p in paths:
        if c:
            continue
        if not await exists(accessor, p):
            await write(accessor, p, b"")
            created[p.mount_path] = b""
    return None, IOResult(writes=created)


BUILDER = Builder('touch',
                  touch,
                  write=True,
                  requirements=frozenset({Operation.EXISTS, Operation.WRITE}))
