import fs from 'node:fs'
import path from 'node:path'
import { fileURLToPath } from 'node:url'

const __dirname = path.dirname(fileURLToPath(import.meta.url))
const iconJs = fs.readFileSync(
  path.join(__dirname, '../../miniprogram/components/icon/icon.js'),
  'utf8'
)
const m = iconJs.match(/getFontGlyph\(name\)[\s\S]*?const map = (\{[\s\S]*?)\n      return map/)
if (!m) {
  console.error('parse fail')
  process.exit(1)
}
const body = m[1]
const lines = body.split('\n').filter((l) => l.trim().startsWith("'"))
const entries = lines
  .map((l) => {
    const mm = l.match(/'([^']+)':\s*'((?:\\u[0-9a-fA-F]+|[\s\S])*)'/)
    if (!mm) return null
    const key = mm[1]
    let ch = mm[2]
    if (ch.startsWith('\\u')) {
      ch = String.fromCharCode(parseInt(ch.slice(2), 16))
    }
    return [key, ch]
  })
  .filter(Boolean)

const out = `/** auto-extracted from miniprogram/components/icon/icon.js */
export const FONT_GLYPH: Record<string, string> = {\n${entries.map(([k, v]) => `  ${JSON.stringify(k)}: ${JSON.stringify(v)},`).join('\n')}\n}\n`
fs.writeFileSync(path.join(__dirname, '../src/components/Icon/fontGlyphMap.ts'), out, 'utf8')
console.log('wrote', entries.length, 'keys')