import { App } from 'adapt-authoring-core'
/**
 * Auth-related utility functions
 * @memberof auth
 */
class AuthUtils {
  /**
   * Returns a generic empty object for mapping values to HTTP methods
   * @return {RouteStore}
   */
  static createEmptyStore () {
    /**
     * A key/value store linking API route/HTTP methods to values
     * @memberof auth
     * @typedef {Object} RouteStore
     * @property {Array} post Data relating to the post HTTP method
     * @property {Array} get Data relating to the get HTTP method
     * @property {Array} put Data relating to the put HTTP method
     * @property {Array} patch Data relating to the patch HTTP method
     * @property {Array} delete Data relating to the delete HTTP method
     */
    return {
      post: [],
      get: [],
      put: [],
      patch: [],
      delete: []
    }
  }
  /**
   * Adds auth data to the incoming request
   * @param {external:ExpressRequest} req
   * @return {Promise}
   */
  static async initAuthData (req) {
    req.auth = {}
    const authHeader = req.get('Authorization') || req.headers.Authorization
    if (!authHeader) {
      return
    }
    const [type, value] = authHeader.split(' ')
    req.auth.header = { type, value }
  }
  /**
   * Shortcut to retrieve auth config values
   * @param {String} key
   * @return {String}
   */
  static getConfig (key) {
    return App.instance.config.get(`adapt-authoring-auth.${key}`)
  }
  /**
   * Logs a message using the logger
   * @param {String} level The log level
   * @param {...*} args Other aruments
   */
  static log (level, ...args) {
    return App.instance.logger.log(level, 'auth', ...args)
  }
}
export default AuthUtils