var JitsiConference = require("./JitsiConference");
import * as JitsiConnectionEvents from "./JitsiConnectionEvents";
import XMPP from "./modules/xmpp/xmpp";
var Statistics = require("./modules/statistics/statistics");

/**
 * Creates new connection object for the Jitsi Meet server side video conferencing service. Provides access to the
 * JitsiConference interface.
 * @param appID identification for the provider of Jitsi Meet video conferencing services.
 * @param token the JWT token used to authenticate with the server(optional)
 * @param options Object with properties / settings related to connection with the server.
 * @constructor
 */
function JitsiConnection(appID, token, options) {
    this.appID = appID;
    this.token = token;
    this.options = options;
    this.xmpp = new XMPP(options, token);

    this.addEventListener(JitsiConnectionEvents.CONNECTION_FAILED,
        function (errType, msg) {
            // sends analytics and callstats event
            Statistics.sendEventToAll('connection.failed.' + errType,
                {label: msg});
        }.bind(this));

    this.addEventListener(JitsiConnectionEvents.CONNECTION_DISCONNECTED,
        function (msg) {
            // we can see disconnects from normal tab closing of the browser
            // and then there are no msgs, but we want to log only disconnects
            // when there is real error
            if(msg)
                Statistics.analytics.sendEvent(
                    'connection.disconnected.' + msg);
            Statistics.sendLog(
                JSON.stringify({id: "connection.disconnected", msg: msg}));
        });
}

/**
 * Connect the client with the server.
 * @param options {object} connecting options
 * (for example authentications parameters).
 */
JitsiConnection.prototype.connect = function (options) {
    if(!options)
        options = {};

    this.xmpp.connect(options.id, options.password);
};

/**
 * Attach to existing connection. Can be used for optimizations. For example:
 * if the connection is created on the server we can attach to it and start
 * using it.
 *
 * @param options {object} connecting options - rid, sid and jid.
 */
JitsiConnection.prototype.attach = function (options) {
    this.xmpp.attach(options);
};

/**
 * Disconnect the client from the server.
 */
JitsiConnection.prototype.disconnect = function () {
    // XXX Forward any arguments passed to JitsiConnection.disconnect to
    // XMPP.disconnect. For example, the caller of JitsiConnection.disconnect
    // may optionally pass the event which triggered the disconnect in order to
    // provide the implementation with finer-grained context.
    var x = this.xmpp;

    x.disconnect.apply(x, arguments);
};

/**
 * This method allows renewal of the tokens if they are expiring.
 * @param token the new token.
 */
JitsiConnection.prototype.setToken = function (token) {
    this.token = token;
};

/**
 * Creates and joins new conference.
 * @param name the name of the conference; if null - a generated name will be
 * provided from the api
 * @param options Object with properties / settings related to the conference
 * that will be created.
 * @returns {JitsiConference} returns the new conference object.
 */
JitsiConnection.prototype.initJitsiConference = function (name, options) {
    return new JitsiConference({name: name, config: options, connection: this});
};

/**
 * Subscribes the passed listener to the event.
 * @param event {JitsiConnectionEvents} the connection event.
 * @param listener {Function} the function that will receive the event
 */
JitsiConnection.prototype.addEventListener = function (event, listener) {
    this.xmpp.addListener(event, listener);
};

/**
 * Unsubscribes the passed handler.
 * @param event {JitsiConnectionEvents} the connection event.
 * @param listener {Function} the function that will receive the event
 */
JitsiConnection.prototype.removeEventListener = function (event, listener) {
    this.xmpp.removeListener(event, listener);
};

/**
 * Returns measured connectionTimes.
 */
JitsiConnection.prototype.getConnectionTimes = function () {
    return this.xmpp.connectionTimes;
};

/**
 * Adds new feature to the list of supported features for the local
 * participant.
 * @param {String} feature the name of the feature.
 * @param {boolean} submit if true - the new list of features will be
 * immediately submitted to the others.
 */
JitsiConnection.prototype.addFeature = function(feature, submit = false) {
    return this.xmpp.caps.addFeature(feature, submit);
};

/**
 * Removes a feature from the list of supported features for the local
 * participant
 * @param {String} feature the name of the feature.
 * @param {boolean} submit if true - the new list of features will be
 * immediately submitted to the others.
 */
JitsiConnection.prototype.removeFeature = function (feature, submit = false) {
    return this.xmpp.caps.removeFeature(feature, submit);
};

module.exports = JitsiConnection;