# ========= 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.base import Accessor
from mirage.commands.builtin.generic.crossmount.utils import \
    transfer_primitives
from mirage.commands.builtin.generic.tar import tar_generic
from mirage.commands.builtin.generic_bind.adapter import (Builder, CommandIO,
                                                          Operation, bound_op)
from mirage.commands.builtin.generic_bind.archive_io import is_dir_of, walk_of
from mirage.commands.config import CommandOpts
from mirage.commands.spec import SPECS
from mirage.commands.spec.types import FlagView
from mirage.io.types import ByteSource, IOResult
from mirage.types import PathSpec


async def tar(ops: CommandIO, accessor: Accessor, paths: list[PathSpec],
              texts: list[str],
              opts: CommandOpts) -> tuple[ByteSource | None, IOResult]:
    if not ops.is_mounted(accessor):
        raise ValueError("tar: missing operand")
    resolved = await ops.resolve_glob(accessor, paths, opts.index)
    fl = FlagView(opts.flags, spec=SPECS["tar"])
    if opts.dispatch is not None and not fl.as_bool("c"):
        # -t reads and -x writes wherever cwd or -C says, which needs
        # not be this mount, so both run on dispatch-relayed doors and
        # each path routes to the mount that owns it. Only -c stays on
        # the accessor: its planner walks this mount's tree.
        prim = transfer_primitives(opts.dispatch)
        return await tar_generic(resolved,
                                 list(texts),
                                 opts,
                                 prim["read_bytes"],
                                 prim["write"],
                                 prim["mkdir"],
                                 prim["stat"],
                                 walk_of(ops, accessor, opts.index),
                                 is_dir_of(ops, accessor, opts.index),
                                 relay=True)
    return await tar_generic(resolved, list(texts), opts,
                             bound_op(ops.read_bytes, accessor, opts.index),
                             partial(ops.require(Operation.WRITE), accessor),
                             partial(ops.require(Operation.MKDIR), accessor),
                             bound_op(ops.stat, accessor, opts.index),
                             walk_of(ops, accessor, opts.index),
                             is_dir_of(ops, accessor, opts.index))


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