from app.models.habit import ALL_WEEKDAYS_MASK
from app.template_utils import heatmap_opacity, weekday_label


def test_weekday_label_all_days_shows_daily():
    assert weekday_label(ALL_WEEKDAYS_MASK) == "매일"


def test_weekday_label_lists_selected_days_in_order():
    monday_and_wednesday = 0b0000001 | 0b0000100
    assert weekday_label(monday_and_wednesday) == "월, 수"


def test_weekday_label_no_days_selected():
    assert weekday_label(0) == "선택된 요일 없음"


def test_heatmap_opacity_zero_when_nothing_scheduled():
    assert heatmap_opacity(checked_count=0, scheduled_count=0) == 0.0


def test_heatmap_opacity_zero_when_nothing_checked():
    assert heatmap_opacity(checked_count=0, scheduled_count=5) == 0.0


def test_heatmap_opacity_full_ratio_caps_at_point_nine():
    assert heatmap_opacity(checked_count=5, scheduled_count=5) == 0.9


def test_heatmap_opacity_partial_ratio():
    assert heatmap_opacity(checked_count=1, scheduled_count=2) == round(0.12 + 0.5 * 0.78, 2)