from __future__ import annotations

import pytest

from sticker_downloader.config import ALL_FILE_TYPES, DownloadConfig, parse_file_types
from sticker_downloader.errors import InvalidFileType


@pytest.mark.parametrize("raw", ["", "   ", None, "all", "ALL", " All "])
def test_blank_and_all_mean_everything(raw: str | None) -> None:
    assert parse_file_types(raw) == frozenset(ALL_FILE_TYPES)


@pytest.mark.parametrize(
    ("raw", "expected"),
    [
        ("webp", {"webp"}),
        ("webp,png", {"webp", "png"}),
        ("  WEBP , PNG ", {"webp", "png"}),
        ("webp png", {"webp", "png"}),
        (".webp,.tgs", {"webp", "tgs"}),
        ("png,png", {"png"}),
    ],
)
def test_parses_explicit_type_lists(raw: str, expected: set[str]) -> None:
    assert parse_file_types(raw) == frozenset(expected)


@pytest.mark.parametrize("raw", ["gif", "webp,gif", "jpeg", ",,,"])
def test_rejects_unsupported_types(raw: str) -> None:
    with pytest.raises(InvalidFileType):
        parse_file_types(raw)


def test_sorted_file_types_is_canonical_order() -> None:
    config = DownloadConfig(file_types=frozenset({"png", "webp", "tgs"}))
    assert config.sorted_file_types == ["webp", "tgs", "png"]


def test_wants_reports_membership() -> None:
    config = DownloadConfig(file_types=frozenset({"webp"}))
    assert config.wants("webp")
    assert not config.wants("png")


def test_rejects_empty_type_set() -> None:
    with pytest.raises(InvalidFileType):
        DownloadConfig(file_types=frozenset())


def test_rejects_unknown_type_in_config() -> None:
    with pytest.raises(InvalidFileType):
        DownloadConfig(file_types=frozenset({"gif"}))


@pytest.mark.parametrize(("concurrency", "retries"), [(0, 3), (-1, 3), (1, 0)])
def test_rejects_nonsensical_limits(concurrency: int, retries: int) -> None:
    with pytest.raises(ValueError):
        DownloadConfig(concurrency=concurrency, retries=retries)