// Regenerates src/emojiData.ts from the Unicode emoji list (npm: unicode-emoji-json).
//   node scripts/gen-emoji.mjs
// Capped at Emoji 13.1 so every emoji in the picker renders on older Android phones.
import { readFileSync, writeFileSync } from 'node:fs';
import { createRequire } from 'node:module';

const require = createRequire(import.meta.url);
const groups = require('unicode-emoji-json/data-by-group.json');
const MAX_VERSION = 13.1;
const SKIP = new Set(['component']); // skin tone swatches etc.

const out = groups
  .filter((g) => !SKIP.has(g.slug))
  .map((g) => ({
    name: g.name.replace(' & ', ' and '),
    // "emoji name" pairs, space-separated words; one string per emoji keeps the file small.
    emojis: g.emojis.filter((e) => Number.parseFloat(e.emoji_version) <= MAX_VERSION).map((e) => `${e.emoji} ${e.name}`),
  }));

const header = `// Generated by scripts/gen-emoji.mjs from unicode-emoji-json (MIT). Don't edit by hand.\n`;
writeFileSync(
  new URL('../src/emojiData.ts', import.meta.url),
  `${header}export const EMOJI_GROUPS: { name: string; emojis: string[] }[] = ${JSON.stringify(out)};\n`,
);
const count = out.reduce((n, g) => n + g.emojis.length, 0);
console.log(`wrote ${count} emoji in ${out.length} groups (${readFileSync(new URL('../src/emojiData.ts', import.meta.url)).length} bytes)`);