# This module is part of GitPython and is released under the
# 3-Clause BSD License: https://opensource.org/license/bsd-3-clause/

"""Module implementing a remote object allowing easy access to git remotes."""

__all__ = ["RemoteReference"]

import os

from git.util import join_path

from .head import Head

# typing ------------------------------------------------------------------

from typing import Any, Iterator, NoReturn, TYPE_CHECKING, Union

from git.types import PathLike

if TYPE_CHECKING:
    from git.remote import Remote
    from git.repo import Repo

# ------------------------------------------------------------------------------


class RemoteReference(Head):
    """A reference pointing to a remote head."""

    _common_path_default = Head._remote_common_path_default

    @classmethod
    def iter_items(
        cls,
        repo: "Repo",
        common_path: Union[PathLike, None] = None,
        remote: Union["Remote", None] = None,
        *args: Any,
        **kwargs: Any,
    ) -> Iterator["RemoteReference"]:
        """Iterate remote references, and if given, constrain them to the given remote."""
        common_path = common_path or cls._common_path_default
        if remote is not None:
            common_path = join_path(common_path, str(remote))
        # END handle remote constraint
        # super is Reference
        return super().iter_items(repo, common_path)

    # The Head implementation of delete also accepts strs, but this implementation does
    # not. mypy doesn't have a way of representing tightening the types of arguments in
    # subclasses and recommends Any or "type: ignore".
    # (See: https://github.com/python/typing/issues/241)
    @classmethod
    def delete(cls, repo: "Repo", *refs: "RemoteReference", **kwargs: Any) -> None:  # type: ignore[override]
        """Delete the given remote references.

        :note:
            `kwargs` are given for comparability with the base class method as we
            should not narrow the signature.
        """
        for ref in refs:
            cls._check_ref_name_valid(ref.path)

        repo.git.branch("-d", "-r", *refs)
        # The official deletion method will ignore remote symbolic refs - these are
        # generally ignored in the refs/ folder. We don't though and delete remainders
        # manually.
        for ref in refs:
            try:
                os.remove(cls._get_validated_path(repo.common_dir, ref.path))
            except OSError:
                pass
            try:
                os.remove(cls._get_validated_path(repo.git_dir, ref.path))
            except OSError:
                pass
        # END for each ref

    @classmethod
    def create(cls, *args: Any, **kwargs: Any) -> NoReturn:
        """Raise :exc:`TypeError`. Defined so the ``create`` method is disabled."""
        raise TypeError("Cannot explicitly create remote references")