thelounge/scripts/generate-emoji.js

"use strict";

const got = require("got");
const path = require("path");
const fs = require("fs");
const fuzzy = require("fuzzy");

(async () => {
	const response = await got("https://raw.githubusercontent.com/emojione/emojione/master/extras/alpha-codes/eac.json");
	const emojiStrategy = JSON.parse(response.body);
	const emojiMap = {};
	const fullNameEmojiMap = {};

	for (const key in emojiStrategy) {
		if (emojiStrategy.hasOwnProperty(key)) {
			const shortname = prepareShortName(emojiStrategy[key].alpha_code);
			const unicode = stringToUnicode(emojiStrategy[key].output);
			fullNameEmojiMap[unicode] = emojiStrategy[key].name;

			// Skip tones, at least for now
			if (shortname.includes("tone")) {
				continue;
			}

			emojiMap[shortname] = unicode;

			for (let alternative of emojiStrategy[key].aliases.split("|")) {
				alternative = prepareShortName(alternative);

				if (fuzzy.test(shortname, alternative) || fuzzy.test(alternative, shortname)) {
					continue;
				}

				emojiMap[alternative] = unicode;
			}
		}
	}

	const emojiMapOutput = JSON.stringify(emojiMap, null, 2) + "\n";
	const fullNameEmojiMapOutput = JSON.stringify(fullNameEmojiMap, null, 2) + "\n";

	fs.writeFileSync(path.resolve(path.join(
		__dirname,
		"..",
		"client",
		"js",
		"libs",
		"simplemap.json"
	)), emojiMapOutput);

	fs.writeFileSync(path.resolve(path.join(
		__dirname,
		"..",
		"client",
		"js",
		"libs",
		"fullnamemap.json"
	)), fullNameEmojiMapOutput);
})();

function stringToUnicode(key) {
	return key
		.split("-")
		.map((c) => String.fromCodePoint(`0x${c}`))
		.join("");
}

function prepareShortName(shortname) {
	if (shortname === ":-1:") {
		// We replace dashes, but should keep :-1: working
		return "-1";
	} else if (shortname === ":e-mail:") {
		// :email: exists as an alternative, should figure out how to use it instead
		return "email";
	}

	return shortname
		.slice(1, -1)
		.replace("-", "_");
}