from __future__ import annotations

__lazy_modules__ = {
    "plumbum.machines.local",
    "plumbum.path.base",
    "plumbum.path.local",
    "plumbum.path.remote",
}

import os

from plumbum.machines.local import local
from plumbum.path.base import Path
from plumbum.path.local import LocalPath
from plumbum.path.remote import RemotePath


def delete(*paths: str | Path) -> None:
    """Deletes the given paths. The arguments can be either strings,
    :class:`local paths <plumbum.path.local.LocalPath>`,
    :class:`remote paths <plumbum.path.remote.RemotePath>`, or iterables of such.
    No error is raised if any of the paths does not exist (it is silently ignored)
    """
    for p in paths:
        if isinstance(p, Path):
            p.delete()
        elif isinstance(p, str):
            local.path(p).delete()
        elif hasattr(p, "__iter__"):
            delete(*p)
        else:
            raise TypeError(f"Cannot delete {p!r}")


def _move(src: Path | str, dst: Path | str) -> Path:
    ret = copy(src, dst)
    delete(src)
    return ret


def move(src: Path | str, dst: Path | str) -> Path:
    """Moves the source path onto the destination path; ``src`` and ``dst`` can be either
    strings, :class:`LocalPaths <plumbum.path.local.LocalPath>` or
    :class:`RemotePath <plumbum.path.remote.RemotePath>`; any combination of the three will
    work.

    .. versionadded:: 1.3
        ``src`` can also be a list of strings/paths, in which case ``dst`` must not exist or be a directory.
    """
    if not isinstance(dst, Path):
        dst = local.path(dst)
    if isinstance(src, (tuple, list)):
        if not dst.exists():
            dst.mkdir()
        elif not dst.is_dir():
            raise ValueError(
                f"When using multiple sources, dst {dst!r} must be a directory"
            )
        for src2 in src:
            move(src2, dst)
        return dst
    if not isinstance(src, Path):
        src = local.path(src)

    if isinstance(src, LocalPath):
        return src.move(dst) if isinstance(dst, LocalPath) else _move(src, dst)
    if isinstance(dst, LocalPath):
        return _move(src, dst)

    if (
        isinstance(src, RemotePath)
        and isinstance(dst, RemotePath)
        and src.remote == dst.remote
    ):
        return src.move(dst)

    return _move(src, dst)


def copy(src: str | Path, dst: str | Path) -> Path:
    """
    Copy (recursively) the source path onto the destination path; ``src`` and ``dst`` can be
    either strings, :class:`LocalPaths <plumbum.path.local.LocalPath>` or
    :class:`RemotePath <plumbum.path.remote.RemotePath>`; any combination of the three will
    work.

    .. versionadded:: 1.3
        ``src`` can also be a list of strings/paths, in which case ``dst`` must not exist or be a directory.
    """
    if not isinstance(dst, Path):
        dst = local.path(dst)
    if isinstance(src, (tuple, list)):
        if not dst.exists():
            dst.mkdir()
        elif not dst.is_dir():
            raise ValueError(
                f"When using multiple sources, dst {dst!r} must be a directory"
            )
        for src2 in src:
            copy(src2, dst)
        return dst

    if not isinstance(src, Path):
        src = local.path(src)

    if isinstance(src, LocalPath):
        if isinstance(dst, LocalPath):
            return src.copy(dst)
        assert isinstance(dst, RemotePath)
        dst.remote.upload(src, dst)
        return dst

    assert isinstance(src, RemotePath)
    if isinstance(dst, LocalPath):
        src.remote.download(src, dst)
        return dst

    assert isinstance(dst, RemotePath)
    if src.remote == dst.remote:
        return src.copy(dst)

    with local.tempdir() as tmp:
        copy(src, tmp)
        copy(tmp / src.name, dst)
    return dst


def gui_open(filename: str | Path) -> None:
    """This selects the proper gui open function. This can
    also be achieved with webbrowser, but that is not supported."""
    if hasattr(os, "startfile"):
        os.startfile(filename)
    else:
        local.get("xdg-open", "open")(filename)


__all__ = [
    "copy",
    "delete",
    "gui_open",
    "move",
]


def __dir__() -> list[str]:
    return list(__all__)