from typing import Literal

TimeOfDay = Literal["morning", "afternoon", "evening", "night"]

def select_light_scene(time_of_day: str, activity: str) -> str:
    """Return a simple lighting scene_id hint from time of day and activity.

    The scene_id is a high-level label, not necessarily the exact dataset row.
    """
    t = time_of_day.lower()
    a = activity.lower()

    if "movie" in a:
        return "LR_EVENING_MOVIE"
    if "gaming" in a or "game" in a:
        return "LR_GAME_TIME"
    if "work" in a or "deep_work" in a or "office" in a:
        return "OF_WORK_FOCUS"
    if "cook" in a or "kitchen" in a:
        return "KT_COOKING"
    if "sleep" in a or "bed" in a or t == "night":
        return "BR_NIGHT_SLEEP"
    if "coffee" in a or ("relax" in a and t == "morning"):
        return "LR_MORNING_SOFT"

    # Fallback by time of day
    if t == "morning":
        return "LR_MORNING_SOFT"
    if t == "afternoon":
        return "OF_WORK_FOCUS"
    if t == "evening":
        return "LR_EVENING_MOVIE"
    return "HW_NIGHT_SAFE"


if __name__ == "__main__":
    tests = [
        ("evening", "watch_movie"),
        ("evening", "gaming"),
        ("afternoon", "deep_work"),
        ("morning", "coffee_relax"),
        ("night", "go_to_sleep"),
    ]
    for t, act in tests:
        print(t, act, "->", select_light_scene(t, act))