from __future__ import annotations

from pathlib import Path

import pytest

from yt_shorts_downloader.core import runtime


def test_find_supported_js_runtimes_prefers_deno(
    monkeypatch: pytest.MonkeyPatch,
) -> None:
    monkeypatch.setattr(
        runtime,
        'which',
        lambda executable: '/usr/bin/deno' if executable == 'deno' else None,
    )

    runtimes = runtime.find_supported_js_runtimes()

    assert runtimes == {'deno': {'path': '/usr/bin/deno'}}


def test_find_supported_js_runtimes_uses_best_supported_node(
    monkeypatch: pytest.MonkeyPatch,
    tmp_path: Path,
) -> None:
    first_node = tmp_path / '.nvm' / 'versions' / 'node' / 'v22.1.0' / 'bin' / 'node'
    second_node = tmp_path / '.nvm' / 'versions' / 'node' / 'v22.9.0' / 'bin' / 'node'
    second_node.parent.mkdir(parents=True)
    first_node.parent.mkdir(parents=True)
    first_node.write_text('', encoding='utf-8')
    second_node.write_text('', encoding='utf-8')

    def fake_which(_executable: str) -> None:
        return None

    monkeypatch.setattr(runtime, 'which', fake_which)
    monkeypatch.setattr(Path, 'home', lambda: tmp_path)
    monkeypatch.setattr(
        runtime,
        '_probe_executable_version',
        lambda executable: (22, 9, 0) if executable.endswith('v22.9.0/bin/node') else (22, 1, 0),
    )

    runtimes = runtime.find_supported_js_runtimes()

    assert runtimes == {'node': {'path': str(second_node.resolve())}}


def test_parse_semver_handles_prefixed_versions() -> None:
    assert runtime._parse_semver('v22.12.1') == (22, 12, 1)
    assert runtime._parse_semver('node') is None