# retoor <retoor@molodetz.nl>
import json
from functools import lru_cache

import emoji

from molodetz import config

CUSTOM_SHORTCODES = {
    "molodetz": "\U0001F58B\uFE0F",
    "af": "\u2705",
}

GENERATED_JS = config.STATIC_DIR / "js" / "generated" / "EmojiMap.js"


@lru_cache(maxsize=1)
def shortcode_map():
    mapping = {}
    for char, data in emoji.EMOJI_DATA.items():
        if data.get("status") != emoji.STATUS["fully_qualified"]:
            continue
        names = [data.get("en", "")] + list(data.get("alias", []))
        for name in names:
            key = name.strip(":")
            if key and key not in mapping:
                mapping[key] = char
    mapping.update(CUSTOM_SHORTCODES)
    return mapping


def write_js_module(path=GENERATED_JS):
    path.parent.mkdir(parents=True, exist_ok=True)
    payload = json.dumps(dict(sorted(shortcode_map().items())), ensure_ascii=False, separators=(",", ":"))
    path.write_text(
        "// retoor <retoor@molodetz.nl>\n"
        f"export const EMOJI_MAP = Object.freeze({payload});\n",
        encoding="utf-8",
    )
    return path


def is_single_emoji(value):
    value = (value or "").strip()
    return emoji.emoji_count(value) == 1 and emoji.purely_emoji(value)