/* @flow */

import { BEGIN_SHARE_ROOM, END_SHARE_ROOM } from './actionTypes';

/**
 * Begins the UI procedure to share the URL for the current conference/room.
 *
 * @param {string} roomURL - The URL of the room to share.
 * @public
 * @returns {Function}
 */
export function beginShareRoom(roomURL: ?string): Function {
    return (dispatch, getState) => {
        if (!roomURL) {
            const { conference, room } = getState()['features/base/conference'];

            // eslint-disable-next-line no-param-reassign
            roomURL = _getRoomURL(conference, room);
        }

        if (roomURL) {
            dispatch({
                type: BEGIN_SHARE_ROOM,
                roomURL
            });
        }
    };
}

/**
 * Ends the UI procedure to share a specific conference/room URL.
 *
 * @param {string} roomURL - The URL of the conference/room which was shared.
 * @param {boolean} shared - True if the URL was shared successfully; false,
 * otherwise.
 * @public
 * @returns {{
 *     type: END_SHARE_ROOM,
 *     roomURL: string,
 *     shared: boolean
 * }}
 */
export function endShareRoom(roomURL: string, shared: boolean): Object {
    return {
        type: END_SHARE_ROOM,
        roomURL,
        shared
    };
}

/**
 * Gets the public URL of a conference/room.
 *
 * @param {JitsiConference} conference - The JitsiConference to share the URL
 * of.
 * @param {string} room - The name of the room to share the URL of.
 * @private
 * @returns {string|null}
 */
function _getRoomURL(conference, room) {
    return (
        conference
            && room
            && `https://${conference.connection.options.hosts.domain}/${room}`);
}