const singlePromiseMap: Record<string, Promise<any>> = {}

export const singlePromise = <T>(cb: () => Promise<T>, key: string) => {
  let promise = singlePromiseMap[key]
  if (!promise) {
    promise = cb().finally(() => {
      delete singlePromiseMap[key]
      promise = null
    })
    singlePromiseMap[key] = promise
  }
  return promise
}

export const retryPromise = async (
  cb: () => Promise<boolean>,
  maxNumberOfRetries = 3,
) => {
  for (let i = 0; i < maxNumberOfRetries; i++) {
    if (await cb())
      return true
  }

  return false
}