/* global APP, config */
import ConferenceUrl from '../../../modules/URL/ConferenceUrl';
import BoshAddressChoice from '../../../modules/config/BoshAddressChoice';
import { obtainConfig, setTokenData } from './functions';
const logger = require('jitsi-meet-logger').getLogger(__filename);

/**
 * If we have an HTTP endpoint for getting config.json configured
 * we're going to read it and override properties from config.js and
 * interfaceConfig.js. If there is no endpoint we'll just
 * continue with initialization.
 * Keep in mind that if the endpoint has been configured and we fail
 * to obtain the config for any reason then the conference won't
 * start and error message will be displayed to the user.
 *
 * @returns {Function}
 */
export function obtainConfigAndInit() {
    return () => {
        const room = APP.conference.roomName;

        if (config.configLocation) {
            const location = config.configLocation;

            obtainConfig(location, room)
                .then(_obtainConfigHandler)
                .then(_initConference)
                .catch(err => {
                    // Show obtain config error,
                    // pass the error object for report
                    APP.UI.messageHandler.openReportDialog(
                        null, 'dialog.connectError', err);
                });
        } else {
            BoshAddressChoice.chooseAddress(config, room);
            _initConference();
        }
    };
}

/**
 * Obtain config handler.
 *
 * @returns {Promise}
 * @private
 */
function _obtainConfigHandler() {
    const now = window.performance.now();

    APP.connectionTimes['configuration.fetched'] = now;
    logger.log('(TIME) configuration fetched:\t', now);

    return Promise.resolve();
}

/**
 *  Initialization of the app.
 *
 *  @returns {void}
 *  @private
 */
function _initConference() {
    setTokenData();

    // Initialize the conference URL handler
    APP.ConferenceUrl = new ConferenceUrl(window.location);
}