outline/server/models/helpers/AuthenticationHelper.ts

/* eslint-disable @typescript-eslint/no-var-requires */
import find from "lodash/find";
import env from "@server/env";
import Team from "@server/models/Team";
import { Hook, PluginManager } from "@server/utils/PluginManager";

export default class AuthenticationHelper {
  /**
   * Returns the enabled authentication provider configurations for the current
   * installation.
   *
   * @returns A list of authentication providers
   */
  public static get providers() {
    return PluginManager.getHooks(Hook.AuthProvider);
  }

  /**
   * Returns the enabled authentication provider configurations for a team,
   * if given otherwise all enabled providers are returned.
   *
   * @param team The team to get enabled providers for
   * @returns A list of authentication providers
   */
  public static providersForTeam(team?: Team) {
    const isCloudHosted = env.isCloudHosted;

    return AuthenticationHelper.providers
      .sort((hook) => (hook.value.id === "email" ? 1 : -1))
      .filter((hook) => {
        // Email sign-in is an exception as it does not have an authentication
        // provider using passport, instead it exists as a boolean option.
        if (hook.value.id === "email") {
          return team?.emailSigninEnabled;
        }

        // If no team return all possible authentication providers except email.
        if (!team) {
          return true;
        }

        const authProvider = find(team.authenticationProviders, {
          name: hook.value.id,
        });

        // If cloud hosted then the auth provider must be enabled for the team,
        // If self-hosted then it must not be actively disabled, otherwise all
        // providers are considered.
        return (
          (!isCloudHosted && authProvider?.enabled !== false) ||
          (isCloudHosted && authProvider?.enabled)
        );
      });
  }
}