from pathlib import Path

from linkki_poster.models import Language
from linkki_poster.scanner import scan_directory


def write_file(path: Path, text: str = "x") -> None:
    path.write_text(text, encoding="utf-8")


def test_global_prefix_first_family_wins(tmp_path: Path) -> None:
    write_file(tmp_path / "Kuva1.jpg")
    write_file(tmp_path / "Image1.jpg")
    write_file(tmp_path / "Suomi.md", "hello")

    result = scan_directory(tmp_path)
    assert [path.name for path in result.global_images] == ["Kuva1.jpg"]


def test_numeric_suffix_rule_and_case_insensitive_matching(tmp_path: Path) -> None:
    write_file(tmp_path / "KuvaA.jpg")
    write_file(tmp_path / "Kuva2.jpg")
    write_file(tmp_path / "sUoMi.MD", "hello")
    write_file(tmp_path / "sUoMi10.PNG")
    write_file(tmp_path / "sUoMi2.jpg")

    result = scan_directory(tmp_path)
    assert [path.name for path in result.global_images] == ["Kuva2.jpg"]
    assert len(result.languages) == 1
    assert result.languages[0].language == Language.FI
    assert [path.name for path in result.languages[0].images] == ["sUoMi2.jpg", "sUoMi10.PNG"]


def test_natural_sort_and_text_precedence(tmp_path: Path) -> None:
    write_file(tmp_path / "English.md", "right")
    write_file(tmp_path / "english10.png")
    write_file(tmp_path / "english9.webp")
    write_file(tmp_path / "english9.jpg")
    write_file(tmp_path / "english.jpg")

    result = scan_directory(tmp_path)
    assert len(result.languages) == 1
    assets = result.languages[0]
    assert assets.text_file.name == "English.md"
    assert [path.name for path in assets.images] == [
        "english.jpg",
        "english9.jpg",
        "english9.webp",
        "english10.png",
    ]


def test_empty_text_file_is_skipped_as_missing_language(tmp_path: Path) -> None:
    write_file(tmp_path / "Suomi.md", "Hei")
    write_file(tmp_path / "Svenska.md", "   \n\t")
    write_file(tmp_path / "English.md", "")

    result = scan_directory(tmp_path)

    assert [assets.language for assets in result.languages] == [Language.FI]