#  Copyright 2023 LanceDB Developers
#
#  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.

import os
import pathlib

import pytest

from lancedb.util import get_uri_scheme, join_uri


def test_normalize_uri():
    uris = [
        "relative/path",
        "/absolute/path",
        "file:///absolute/path",
        "s3://bucket/path",
        "gs://bucket/path",
        "c:\\windows\\path",
    ]
    schemes = ["file", "file", "file", "s3", "gs", "file"]

    for uri, expected_scheme in zip(uris, schemes):
        parsed_scheme = get_uri_scheme(uri)
        assert parsed_scheme == expected_scheme


def test_join_uri_remote():
    schemes = ["s3", "az", "gs"]
    for scheme in schemes:
        expected = f"{scheme}://bucket/path/to/table.lance"
        base_uri = f"{scheme}://bucket/path/to/"
        parts = ["table.lance"]
        assert join_uri(base_uri, *parts) == expected

        base_uri = f"{scheme}://bucket"
        parts = ["path", "to", "table.lance"]
        assert join_uri(base_uri, *parts) == expected


# skip this test if on windows
@pytest.mark.skipif(os.name == "nt", reason="Windows paths are not POSIX")
def test_join_uri_posix():
    for base in [
        # relative path
        "relative/path",
        "relative/path/",
        # an absolute path
        "/absolute/path",
        "/absolute/path/",
        # a file URI
        "file:///absolute/path",
        "file:///absolute/path/",
    ]:
        joined = join_uri(base, "table.lance")
        assert joined == str(pathlib.Path(base) / "table.lance")
        joined = join_uri(pathlib.Path(base), "table.lance")
        assert joined == pathlib.Path(base) / "table.lance"


# skip this test if not on windows
@pytest.mark.skipif(os.name != "nt", reason="Windows paths are not POSIX")
def test_local_join_uri_windows():
    # https://learn.microsoft.com/en-us/dotnet/standard/io/file-path-formats
    for base in [
        # windows relative path
        "relative\\path",
        "relative\\path\\",
        # windows absolute path from current drive
        "c:\\absolute\\path",
        # relative path from root of current drive
        "\\relative\\path",
    ]:
        joined = join_uri(base, "table.lance")
        assert joined == str(pathlib.Path(base) / "table.lance")
        joined = join_uri(pathlib.Path(base), "table.lance")
        assert joined == pathlib.Path(base) / "table.lance"