index.js

"use strict";
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exports.__esModule = true;
var io = require("socket.io-client");
var events_1 = require("events");
var protocol_1 = require("rsf-twilio-bot/protocol");
// this key will be also used by other classes that implement the "Contactable"
// trait/contract
var STANDARD_EVENT_KEY = 'msg';
exports.STANDARD_EVENT_KEY = STANDARD_EVENT_KEY;
// export a var which will be used to determine whether to use Mattermostable
// as their mode of contact
var TYPE_KEY = 'sms';
exports.TYPE_KEY = TYPE_KEY;
var socket;
var eventBus;
var init = function (twilioConfig) { return __awaiter(void 0, void 0, void 0, function () {
    var socketUrl, socketSecret;
    return __generator(this, function (_a) {
        switch (_a.label) {
            case 0:
                socketUrl = twilioConfig.socketUrl, socketSecret = twilioConfig.socketSecret;
                console.log('initializing rsf-smsable');
                // a singleton that will act to transmit events between the webhook listener
                // and the instances of Telegramable
                eventBus = new events_1.EventEmitter();
                socket = io(socketUrl);
                socket.on(protocol_1.RECEIVE_MESSAGE, function (twilioMessage) {
                    eventBus.emit(twilioMessage.number, twilioMessage.message);
                });
                return [4 /*yield*/, new Promise(function (resolve, reject) {
                        socket.on('connect', resolve);
                    })];
            case 1:
                _a.sent();
                return [2 /*return*/];
        }
    });
}); };
exports.init = init;
var shutdown = function () { return __awaiter(void 0, void 0, void 0, function () {
    return __generator(this, function (_a) {
        console.log('shutting down rsf-smsable');
        socket.disconnect();
        socket.removeAllListeners();
        eventBus.removeAllListeners();
        socket = null;
        eventBus = null;
        return [2 /*return*/];
    });
}); };
exports.shutdown = shutdown;
var Smsable = /** @class */ (function (_super) {
    __extends(Smsable, _super);
    function Smsable(id, name) {
        var _this = _super.call(this) || this;
        if (!(socket && eventBus)) {
            throw new Error('init has not been called');
        }
        // username
        _this.id = id;
        // a human name, optional
        _this.name = name;
        // forward messages from the event bus over the class/instance level event emitter
        eventBus.on(_this.id, function (text) {
            // emit an event that conforms to the standard for Contactable
            _this.emit(STANDARD_EVENT_KEY, text);
        });
        return _this;
    }
    // expose a function that conforms to the standard for Contactable
    // which can "reach" the person
    Smsable.prototype.speak = function (message) {
        return __awaiter(this, void 0, void 0, function () {
            var twilioMessage;
            return __generator(this, function (_a) {
                twilioMessage = {
                    number: this.id,
                    message: message
                };
                socket.emit(protocol_1.SEND_MESSAGE, twilioMessage);
                return [2 /*return*/];
            });
        });
    };
    Smsable.prototype.listen = function (callback) {
        // just set up the actual event listener
        // using the appropriate key,
        // but not bothering to expose it
        this.on(STANDARD_EVENT_KEY, callback);
    };
    Smsable.prototype.stopListening = function () {
        this.removeAllListeners();
    };
    Smsable.prototype.config = function () {
        return {
            type: TYPE_KEY,
            id: this.id,
            name: this.name
        };
    };
    return Smsable;
}(events_1.EventEmitter));
exports.Smsable = Smsable;