const DESKTOP_CLIENT_ID = 'genuine-qingquwang'
const VISIBLE_ASCII = /^[\x20-\x7E]+$/

export function buildDesktopRequestHeaders(version: string): Record<string, string> {
  const clientHeader = `${DESKTOP_CLIENT_ID}/${version}`
  // Fetch 请求头必须是 ByteString，禁止中文等非 ASCII 字符在发请求前触发异常。
  if (!VISIBLE_ASCII.test(clientHeader)) {
    throw new Error('桌面客户端版本标识必须使用 ASCII 字符')
  }
  return {
    Accept: 'application/json',
    'Content-Type': 'application/json',
    'X-Desktop-Client': clientHeader,
  }
}