github-pages-deploy-action/src/util.ts

import {isDebug} from '@actions/core'
import {ActionInterface} from './constants'

const replaceAll = (input: string, find: string, replace: string): string =>
  input.split(find).join(replace)

/* Utility function that checks to see if a value is undefined or not. */
export const isNullOrUndefined = (value: any): boolean =>
  typeof value === 'undefined' || value === null || value === ''

/* Generates a token type used for the action. */
export const generateTokenType = (action: ActionInterface): string =>
  action.ssh
    ? 'SSH Deploy Key'
    : action.accessToken
    ? 'Access Token'
    : action.gitHubToken
    ? 'GitHub Token'
    : '…'

/* Generates a the repository path used to make the commits. */
export const generateRepositoryPath = (action: ActionInterface): string =>
  action.ssh
    ? `git@github.com:${action.repositoryName}`
    : `https://${action.accessToken ||
        `x-access-token:${action.gitHubToken}`}@github.com/${
        action.repositoryName
      }.git`

/* Checks for the required tokens and formatting. Throws an error if any case is matched. */
export const hasRequiredParameters = (action: ActionInterface): void => {
  if (
    (isNullOrUndefined(action.accessToken) &&
      isNullOrUndefined(action.gitHubToken) &&
      isNullOrUndefined(action.ssh)) ||
    isNullOrUndefined(action.repositoryPath) ||
    (action.accessToken && action.accessToken === '')
  ) {
    throw new Error(
      'No deployment token/method was provided. You must provide the action with either a Personal Access Token or the GitHub Token secret in order to deploy. If you wish to use an ssh deploy token then you must set SSH to true.'
    )
  }

  if (isNullOrUndefined(action.branch)) {
    throw new Error('Branch is required.')
  }

  if (!action.folder || isNullOrUndefined(action.folder)) {
    throw new Error('You must provide the action with a folder to deploy.')
  }

  if (action.folder.startsWith('/') || action.folder.startsWith('./')) {
    throw new Error(
      "Incorrectly formatted build folder. The deployment folder cannot be prefixed with '/' or './'. Instead reference the folder name directly."
    )
  }
}

/* Suppresses sensitive information from being exposed in error messages. */
export const suppressSensitiveInformation = (
  str: string,
  action: ActionInterface
): string => {
  let value = str

  if (isDebug()) {
    // Data is unmasked in debug mode.
    return value
  }

  const orderedByLength = ([
    action.accessToken,
    action.gitHubToken,
    action.repositoryPath
  ].filter(Boolean) as string[]).sort((a, b) => b.length - a.length)

  for (const find of orderedByLength) {
    value = replaceAll(value, find, '***')
  }

  return value
}