#!/usr/bin/env python3

import os
import sys
import tempfile

from posix_parity import cleanup_dir
from posix_parity import cleanup_paths
from posix_parity import compare_calls
from posix_parity import fail
from posix_parity import join
from posix_parity import mergerfs_mount
from posix_parity import temp_dir
from posix_parity import touch


def main():
    try:
        with mergerfs_mount() as (mount, _):
            with tempfile.TemporaryDirectory() as native:
                merge_base = temp_dir(mount)
                try:
                    native_base = join(native, os.path.basename(merge_base))
                    os.makedirs(native_base, exist_ok=True)

                    merge_dir = join(merge_base, "dir")
                    native_dir = join(native_base, "dir")
                    merge_notdir = join(merge_base, "notdir")
                    native_notdir = join(native_base, "notdir")

                    cleanup_paths([merge_dir, merge_notdir])

                    err = compare_calls("mkdir success", lambda: os.mkdir(merge_dir, 0o755), lambda: os.mkdir(native_dir, 0o755))
                    if err:
                        return fail(err)

                    err = compare_calls("mkdir EEXIST", lambda: os.mkdir(merge_dir, 0o755), lambda: os.mkdir(native_dir, 0o755))
                    if err:
                        return fail(err)

                    touch(merge_notdir, b"x")
                    touch(native_notdir, b"x")
                    err = compare_calls(
                        "mkdir ENOTDIR",
                        lambda: os.mkdir(join(merge_notdir, "child"), 0o755),
                        lambda: os.mkdir(join(native_notdir, "child"), 0o755),
                    )
                    if err:
                        return fail(err)

                    err = compare_calls("rmdir success", lambda: os.rmdir(merge_dir), lambda: os.rmdir(native_dir))
                    if err:
                        return fail(err)

                    err = compare_calls("rmdir ENOENT", lambda: os.rmdir(merge_dir), lambda: os.rmdir(native_dir))
                    if err:
                        return fail(err)

                    touch(join(merge_base, "nonempty/file"), b"x")
                    touch(join(native_base, "nonempty/file"), b"x")
                    err = compare_calls(
                        "rmdir ENOTEMPTY",
                        lambda: os.rmdir(join(merge_base, "nonempty")),
                        lambda: os.rmdir(join(native_base, "nonempty")),
                    )
                    if err:
                        return fail(err)

                    return 0
                finally:
                    cleanup_dir(merge_base)
    except RuntimeError as exc:
        print(str(exc), end="")
        return 77


if __name__ == "__main__":
    raise SystemExit(main())