#!/usr/bin/env python3

import os
import sys
import tempfile
import time

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 temp_dir
from posix_parity import touch


def main():
    if len(sys.argv) != 2:
        print("usage: TEST_posix_utimens <mountpoint>", file=sys.stderr)
        return 1

    mount = sys.argv[1]

    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_file = join(merge_base, "file")
            native_file = join(native_base, "file")
            merge_missing = join(merge_base, "missing")
            native_missing = join(native_base, "missing")

            cleanup_paths([merge_file])
            touch(merge_file, b"x")
            touch(native_file, b"x")

            now = time.time()
            times = (now - 1000, now - 500)

            err = compare_calls(
                "utime path success",
                lambda: os.utime(merge_file, times=times),
                lambda: os.utime(native_file, times=times),
            )
            if err:
                return fail(err)

            mfd = os.open(merge_file, os.O_RDWR)
            nfd = os.open(native_file, os.O_RDWR)
            try:
                err = compare_calls(
                    "utime fd success",
                    lambda: os.utime(mfd, times=times),
                    lambda: os.utime(nfd, times=times),
                )
                if err:
                    return fail(err)
            finally:
                os.close(mfd)
                os.close(nfd)

            err = compare_calls(
                "utime ENOENT",
                lambda: os.utime(merge_missing, times=times),
                lambda: os.utime(native_missing, times=times),
            )
            if err:
                return fail(err)

            err = compare_calls(
                "utime EBADF",
                lambda: os.utime(-1, times=times),
                lambda: os.utime(-1, times=times),
            )
            if err:
                return fail(err)

            return 0
        finally:
            cleanup_dir(merge_base)


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