/**
 * @module infra-sk/modules/login-sk
 * @description <h2><code>login-sk</code></h2>
 *
 * <p>
 * The <login-sk> custom element. Uses the Login promise to display the
 * current login status and provides login/logout links. Reports errors via
 * {@linkcode module:elements-sk/error-toast-sk}.
 * </p>
 *
 * @attr {boolean} testing_offline - If we should really poll for Login status
 *  or use mock data.
 * @attr {string} login_host - If it needs to be something other than skia.org.
 *  If login_host is not specified then skia.org will be used.
 *
 * <p>
 */
import { define } from 'elements-sk/define';
import { errorMessage } from 'elements-sk/errorMessage';
import { LoginTo } from '../login';

define('login-sk', class extends HTMLElement {
  connectedCallback() {
    this.innerHTML = '<span class=email>Loading...</span><a class=logInOut></a>';
    const host = this.loginHost ? this.loginHost : 'skia.org';
    if (this.testingOffline) {
      this.querySelector<HTMLSpanElement>('.email')!.textContent = 'test@example.com';
      const logInOut = this.querySelector<HTMLAnchorElement>('.logInOut')!;
      logInOut.href =
          `https://${host}/logout/?redirect=${encodeURIComponent(document.location.toString())}`;
      logInOut.textContent = 'Logout';
    } else {
      LoginTo(`https://${host}/loginstatus/`).then((status) => {
        this.querySelector<HTMLSpanElement>('.email')!.textContent = status.Email;
        const logInOut = this.querySelector<HTMLAnchorElement>('.logInOut')!;
        if (!status.Email) {
          logInOut.href = status.LoginURL;
          logInOut.textContent = 'Login';
        } else {
          logInOut.href =
              `https://${host}/logout/?redirect=` +
              encodeURIComponent(document.location.toString());
          logInOut.textContent = 'Logout';
        }
      }).catch(errorMessage);
    }
  }

  /** Reflects the testing_offline attribute for ease of use. */
  get testingOffline(): boolean { return this.hasAttribute('testing_offline'); }

  set testingOffline(val: boolean) {
    if (val) {
      this.setAttribute('testing_offline', '');
    } else {
      this.removeAttribute('testing_offline');
    }
  }

  /** Which host should be used for login URLs. */
  get loginHost(): string { return this.getAttribute('login_host') || ''; }

  set loginHost(val: string) {
    if (val) {
      this.setAttribute('login_host', val);
    }
  }
});