from redmine_reporter.utils import (
    get_month_name_from_range,
    get_version,
    hours_to_human,
)


def test_hours_to_human_zero():
    assert hours_to_human(0) == "0ч"
    assert hours_to_human(-1) == "0ч"


def test_hours_to_human_whole_hours():
    assert hours_to_human(1.0) == "1ч"
    assert hours_to_human(8.0) == "8ч"


def test_hours_to_human_minutes_only():
    assert hours_to_human(0.75) == "45м"
    assert hours_to_human(0.5) == "30м"


def test_hours_to_human_mixed():
    assert hours_to_human(2.5) == "2ч 30м"
    assert hours_to_human(1.5) == "1ч 30м"


def test_hours_to_human_rounding():
    assert hours_to_human(3.1666) == "3ч 10м"  # 190 минут -> 3ч 10м


def test_get_month_name_from_range():
    assert get_month_name_from_range("2026-01-01", "2026-01-31") == "Январь"
    assert get_month_name_from_range("2025-12-01", "2026-02-15") == "Февраль"


def test_get_month_name_from_range_all_months():
    months = [
        "Январь",
        "Февраль",
        "Март",
        "Апрель",
        "Май",
        "Июнь",
        "Июль",
        "Август",
        "Сентябрь",
        "Октябрь",
        "Ноябрь",
        "Декабрь",
    ]
    for i, name in enumerate(months, start=1):
        to_date = f"2026-{i:02d}-01"
        assert get_month_name_from_range("2026-01-01", to_date) == name


def test_get_month_name_from_range_invalid_fallback():
    """Невалидная дата -- возвращается 'Январь'."""
    assert get_month_name_from_range("invalid", "also_invalid") == "Январь"


def test_get_version_with_attribute():
    class MockIssue:
        fixed_version = "v2.5.0"

    assert get_version(MockIssue()) == "v2.5.0"


def test_get_version_without_attribute():
    class MockIssue:
        pass

    assert get_version(MockIssue()) == "<N/A>"


def test_get_version_none_attribute():
    class MockIssue:
        fixed_version = None

    assert get_version(MockIssue()) == "<N/A>"