REACTION_ALIASES: dict[str, str] = {
    "love": "love",
    "\u2764\ufe0f": "love",
    "\u2764": "love",
    "fire": "love",
    "\U0001f525": "love",
    "heart_eyes": "love",
    "like": "like",
    "thumbsup": "like",
    "thumb": "like",
    "ok": "like",
    "dislike": "dislike",
    "thumbsdown": "dislike",
    "boo": "dislike",
    "no": "dislike",
    "laugh": "laugh",
    "haha": "laugh",
    "lol": "laugh",
    "lmao": "laugh",
    "rofl": "laugh",
    "\U0001f602": "laugh",
    "\U0001f923": "laugh",
    "xd": "laugh",
    "emphasize": "emphasize",
    "!!": "emphasize",
    "\u203c\ufe0f": "emphasize",
    "\u2757": "emphasize",
    "important": "emphasize",
    "bang": "emphasize",
    "wow": "emphasize",
    "question": "question",
    "?": "question",
    "\u2753": "question",
    "\u2754": "question",
    "ask": "question",
}

SUPPORTED_REACTIONS = frozenset({"love", "like", "dislike", "laugh", "emphasize", "question"})


def normalize_reaction_loose(raw: str) -> str:
    return REACTION_ALIASES.get(raw.strip().lower(), "love")


def normalize_reaction_strict(raw: str) -> str:
    key = raw.strip().lower()
    if key not in REACTION_ALIASES:
        raise ValueError(f"Unsupported reaction: {raw}")
    return REACTION_ALIASES[key]


def is_supported_reaction(name: str) -> bool:
    return name in SUPPORTED_REACTIONS