const { query } = require('../config/database')

const LEGACY_PREFIX = 'legacy.'

async function decodeBasicAuth(token) {
  if (!token || !token.startsWith(LEGACY_PREFIX)) return null
  const raw = token.slice(LEGACY_PREFIX.length)
  const users = await query(
    'SELECT id, phone, name, avatar, points, role, status, openid FROM users WHERE token = ? AND status = 1',
    [raw]
  )
  return users[0] || null
}

function toLegacyToken(token) {
  return token && token.startsWith(LEGACY_PREFIX) ? token : LEGACY_PREFIX + token
}

module.exports = { decodeBasicAuth, toLegacyToken, LEGACY_PREFIX }