from __future__ import annotations

from pathlib import Path

import pytest

import scripts.common as common


def write_page(path: Path, text: str) -> None:
    path.parent.mkdir(parents=True, exist_ok=True)
    path.write_text(text, encoding="utf-8")


def patch_root(
    monkeypatch: pytest.MonkeyPatch,
    root: Path,
) -> None:
    monkeypatch.setattr(common, "ZPWIKI_ROOT", root)
    monkeypatch.setattr(common, "PAGES_ROOT", root / "pages")


def test_yaml_metadata_and_title_have_priority(
    tmp_path: Path,
    monkeypatch: pytest.MonkeyPatch,
) -> None:
    root = tmp_path / "zpwiki"
    page = root / "pages" / "student" / "README.md"

    write_page(
        page,
        """---
title: YAML názov
published: true
taxonomy:
  category: [dp2027]
  tag: [rag, nlp]
  author: Daniel Hladek
---
# Markdown názov

Obsah.
""",
    )

    patch_root(monkeypatch, root)
    document = common.load_zpwiki_page(page)

    assert document["path"] == "pages/student/README.md"
    assert document["title"] == "YAML názov"
    assert document["published"] is True
    assert document["categories"] == ["dp2027"]
    assert document["tags"] == ["rag", "nlp"]
    assert document["author"] == "Daniel Hladek"
    assert document["content"] == "# Markdown názov\n\nObsah."


def test_first_markdown_heading_is_title_fallback(
    tmp_path: Path,
    monkeypatch: pytest.MonkeyPatch,
) -> None:
    root = tmp_path / "zpwiki"
    page = root / "pages" / "translation" / "README.md"

    write_page(
        page,
        """```markdown
# Toto nie je názov dokumentu
```

# **Strojový** [preklad](https://example.com)

Obsah.
""",
    )

    patch_root(monkeypatch, root)
    document = common.load_zpwiki_page(page)

    assert document["title"] == "Strojový preklad"


def test_parent_directory_is_title_fallback(
    tmp_path: Path,
    monkeypatch: pytest.MonkeyPatch,
) -> None:
    root = tmp_path / "zpwiki"
    page = root / "pages" / "patrik_pavlisin" / "README.md"

    write_page(page, "Text bez YAML title a bez nadpisu.")
    patch_root(monkeypatch, root)

    document = common.load_zpwiki_page(page)

    assert document["title"] == "Patrik Pavlisin"


@pytest.mark.parametrize(
    ("value", "expected"),
    [
        (True, True),
        (False, False),
        (1, True),
        (0, False),
        ("true", True),
        ("ÁNO", True),
        ("false", False),
        ("nie", False),
        (None, None),
        ("neznáma hodnota", None),
    ],
)
def test_optional_bool_normalization(value, expected) -> None:
    assert common.normalize_optional_bool(value) is expected


def test_normalize_list_removes_empty_values_and_duplicates() -> None:
    assert common.normalize_list("rag, nlp, rag, ") == ["rag", "nlp"]
    assert common.normalize_list(["rag", "", "rag", "nlp"]) == [
        "rag",
        "nlp",
    ]
    assert common.normalize_list(None) == []


def test_json_roundtrip(tmp_path: Path) -> None:
    path = tmp_path / "nested" / "data.json"
    value = {"text": "Ján Pták", "published": True}

    common.write_json(path, value)

    assert common.read_json(path) == value