"""Юнит-тесты сборки списка литературы по ГОСТ (порядок и нумерация)."""

from app.bibliography import build_bibliography


def _doc(doc_id: int, last_name: str, year: int = 2020) -> dict:
    return {
        "id": doc_id,
        "title": "Некоторое название работы",
        "authors": [{"last_name": last_name}],
        "year": year,
        "journal": "Вестник",
        "lang": "ru",
    }


def test_empty_list():
    out = build_bibliography([], style="7.1")
    assert out == {"bibliography": [], "style": "7.1", "total": 0}


def test_numbering_is_sequential_from_one():
    docs = [_doc(10, "Борисов"), _doc(20, "Александров"), _doc(30, "Васильев")]
    out = build_bibliography(docs, style="7.1")
    assert [b["number"] for b in out["bibliography"]] == [1, 2, 3]
    assert out["total"] == 3


def test_sorted_alphabetically_within_cyrillic():
    docs = [_doc(1, "Яковлев"), _doc(2, "Абрамов"), _doc(3, "Миронов")]
    out = build_bibliography(docs, style="7.1")
    order = [b["doc_id"] for b in out["bibliography"]]
    assert order == [2, 3, 1]  # Абрамов, Миронов, Яковлев


def test_cyrillic_sorted_before_latin():
    docs = [_doc(1, "Adams"), _doc(2, "Яковлев")]
    out = build_bibliography(docs, style="7.1")
    # русский источник идёт первым, иностранный — после
    assert [b["doc_id"] for b in out["bibliography"]] == [2, 1]


def test_style_7_1_uses_full_citation():
    out = build_bibliography([_doc(1, "Иванов")], style="7.1")
    citation = out["bibliography"][0]["citation"]
    assert "//" in citation  # полное описание статьи содержит разделитель журнала
    assert out["style"] == "7.1"


def test_style_7_0_5_uses_short_citation():
    out = build_bibliography([_doc(1, "Иванов", year=2021)], style="7.0.5")
    citation = out["bibliography"][0]["citation"]
    assert citation == "[Иванов, 2021]"  # краткая ссылка
    assert out["style"] == "7.0.5"


def test_doc_id_preserved_in_each_entry():
    out = build_bibliography([_doc(42, "Иванов"), _doc(7, "Абрамов")], style="7.1")
    assert {b["doc_id"] for b in out["bibliography"]} == {42, 7}