from __future__ import annotations

GITHUB_REACTION_CONTENT_MAP: dict[str, str] = {
    "+1": "+1",
    "👍": "+1",
    "thumbs_up": "+1",
    "-1": "-1",
    "👎": "-1",
    "thumbs_down": "-1",
    "laugh": "laugh",
    "😄": "laugh",
    "confused": "confused",
    "😕": "confused",
    "heart": "heart",
    "❤️": "heart",
    "hooray": "hooray",
    "🎉": "hooray",
    "rocket": "rocket",
    "🚀": "rocket",
    "eyes": "eyes",
    "👀": "eyes",
}

SUPPORTED_REACTIONS = frozenset({
    "+1", "-1", "laugh", "confused", "heart", "hooray", "rocket", "eyes",
})


def normalize_reaction_content(emoji: str) -> str:
    stripped = emoji.strip()
    if stripped in SUPPORTED_REACTIONS:
        return stripped
    return GITHUB_REACTION_CONTENT_MAP.get(stripped.lower(), "heart")


def is_supported(emoji: str) -> bool:
    return normalize_reaction_content(emoji) in SUPPORTED_REACTIONS