const fs = require('fs')
const path = require('path')

function walk(dir, out = []) {
  for (const name of fs.readdirSync(dir)) {
    const p = path.join(dir, name)
    const st = fs.statSync(p)
    if (st.isDirectory()) walk(p, out)
    else if (/\.(vue|js|scss)$/.test(name)) out.push(p)
  }
  return out
}

const root = path.join(__dirname, '../src/views/lobster')
for (const file of walk(root)) {
  const buf = fs.readFileSync(file)
  let invalid = 0
  for (let i = 0; i < buf.length; i++) {
    const b = buf[i]
    if (b <= 0x7f) continue
    if (b >= 0xc2 && b <= 0xdf) {
      if (i + 1 >= buf.length || buf[i + 1] < 0x80 || buf[i + 1] > 0xbf) invalid++
      else i++
    } else if (b >= 0xe0 && b <= 0xef) {
      if (i + 2 >= buf.length || buf[i + 1] < 0x80 || buf[i + 1] > 0xbf || buf[i + 2] < 0x80 || buf[i + 2] > 0xbf) invalid++
      else i += 2
    } else if (b >= 0xf0 && b <= 0xf4) {
      if (i + 3 >= buf.length) invalid++
      else i += 3
    } else if (b >= 0x80 && b <= 0xbf) {
      invalid++
    } else {
      invalid++
    }
  }
  const text = buf.toString('utf8')
  const repl = (text.match(/\uFFFD/g) || []).length
  const mojibake = /[\u0080-\u00ff]{3,}/.test(text) && /label=/.test(text)
  if (invalid || repl || mojibake) {
    console.log(path.relative(root, file), { invalid, repl, mojibake })
  }
}