import gzip

from leaderboard_analytics.geoip_database import ensure_geoip_database


def test_ensure_geoip_database_downloads_and_decompresses_gzip(tmp_path) -> None:
    source = tmp_path / "GeoLite2-Country.mmdb.gz"
    target = tmp_path / "GeoLite2-Country.mmdb"
    expected_bytes = b"fake-mmdb-bytes"

    with gzip.open(source, "wb") as gzip_file:
        gzip_file.write(expected_bytes)

    result = ensure_geoip_database(target, source.as_uri())

    assert result == target
    assert target.read_bytes() == expected_bytes


def test_ensure_geoip_database_keeps_existing_file(tmp_path) -> None:
    source = tmp_path / "missing.mmdb.gz"
    target = tmp_path / "GeoLite2-Country.mmdb"
    expected_bytes = b"existing-mmdb-bytes"
    target.write_bytes(expected_bytes)

    result = ensure_geoip_database(target, source.as_uri())

    assert result == target
    assert target.read_bytes() == expected_bytes