/**
 * 从 Font Awesome SCSS 变量生成图标 Unicode 映射表。
 * 升级 @fortawesome/fontawesome-free 后执行: node scripts/gen-fa-icons.js
 */
const fs = require('fs')
const path = require('path')

const scssPath = path.join(
	__dirname,
	'../node_modules/@fortawesome/fontawesome-free/scss/_variables.scss'
)
const outputPath = path.join(__dirname, '../utils/fa-icons.js')

const source = fs.readFileSync(scssPath, 'utf8')
const icons = {}

for (const match of source.matchAll(/\$var-([a-z0-9-]+):\s*\\([a-f0-9]+);/gi)) {
	const [, name, hex] = match
	icons[name] = String.fromCharCode(parseInt(hex, 16))
}

const content = `export const FA_ICONS = ${JSON.stringify(icons, null, 2)}\n`
fs.writeFileSync(outputPath, content, 'utf8')
console.log(`Generated ${Object.keys(icons).length} icons -> utils/fa-icons.js`)