/**
 * Created by Martin on 08/02/2016.
 */
"use strict";
var mqtt = require('mqtt');

var Messaging = require("mqtt_over_websockets");
var log4js = require('log4js');
var logger = log4js.getLogger();

var mqttConfig = {
    orgId: 'qz0da4',
    userName: 'a-qz0da4-dfwwdkmkzr',
    appKey: '9txJEf3Cjy7hkSOvkv',
    prefix: 'iot-2/type/Ti-CC3200/id/'
};

function randomString(length) {
    return Math.round((Math.pow(36, length + 1) - Math.random() * Math.pow(36, length))).toString(36).slice(1);
}

module.exports = {
    sockets : null,
    watches : {},
    client: null,
    projector: 'ProjectorISP15',
    lighting: 'LightingISP15',
    heating: 'HeatingISP15',
    myID: 0,
    connected: false,
    options: {
        keepalive: 3600,
        clientId: 'a:' + mqttConfig.orgId + ':' + Date.now(),
        username: mqttConfig.userName,
        password: new Buffer(mqttConfig.appKey)

    },
    setEmitter: function(newEmitter)
    {
      this.emitter = newEmitter;
    },
    doConnection: function (cb) {
        console.log('Do connection');
        var self = this;
        if (this.client === null) {
            this.client = mqtt.connect('mqtt://' + mqttConfig.orgId + '.messaging.internetofthings.ibmcloud.com', this.options);

            this.client.on('connect', function () {
                console.log('Connected to IBM');
                self.connected = this.connected;
            });
        }
        return this;
    },
    isConnected: function () {
        return this.connected;
    },
    sendCommand: function (deviceID, command) {
        var payload = {
            id: "d",
            text: command

        };
    },
    projectorOn: function (callback) {
        var _callback = callback || {};

        if (!this.client) {
            return -1;
        }
        var destinationName = mqttConfig.prefix + this.projector + "/cmd/" + 'ON' + "/fmt/json";
        this.client.publish(destinationName, 'ON', _callback);
    },
    projectorOff: function (callback) {
        var _callback = callback || {};
        if (!this.client) {
            return -1;
        }
        var destinationName = mqttConfig.prefix + this.projector + "/cmd/" + 'OFF' + "/fmt/json";
        this.client.publish(destinationName, 'OFF', _callback);
    },
    heatingOn: function (callback) {
        console.log('Turn heating on...');
        var _callback = callback || null;
        if (!this.client) {
            return -1;
        }
        var destinationName = mqttConfig.prefix + this.heating + "/cmd/" + 'on' + "/fmt/json";
        this.client.publish(destinationName, 'ON', _callback);

    },
    heatingOff: function (callback) {
        var _callback = callback || {};
        if (!this.client) {
            return -1;
        }
        var destinationName = mqttConfig.prefix + this.heating + "/cmd/" + 'off' + "/fmt/json";
        this.client.publish(destinationName, 'OFF', _callback);

    },
    lightingOn: function (id, callback) {
        console.log('lightingOn:' + id);
        var _callback = callback || null;
        if (!this.client) {
            return -1;
        }
        var destinationName = mqttConfig.prefix + this.lighting + "/cmd/" + id + "/fmt/json";
        this.client.publish(destinationName, 'ON', _callback);

    },
    lightingOff: function (id, callback) {
        var _callback = callback || null;
        if (!this.client) {
            return -1;
        }
        var destinationName = mqttConfig.prefix + this.lighting + "/cmd/" + id + "/fmt/json";
        this.client.publish(destinationName, 'OFF', _callback);

    },

    connectWS: function (connectCB) {

        logger.debug("Going to connect WS");
        var self = this;
        var hostname = "qz0da4" + ".messaging.internetofthings.ibmcloud.com";
        var clientId = "a:" + "qz0da4" + ":" + Date.now();

        var api_key = "a-qz0da4-dfwwdkmkzr";
        var auth_token = "9txJEf3Cjy7hkSOvkv";

        var wsClient = new Messaging.Client(hostname, 8883, clientId);
        var clientStatus = {connected: false, subscribed: false, deviceConnected: false};
        var sensorData = {};
        var watches ={};

        wsClient.onMessageArrived = function (msg) {
         //   console.log("Message from :" + msg.destinationName);
            clientStatus.deviceConnected = true;
            // $rootScope.$broadcast("clientStatusUpdated", clientStatus);
            //logger.debug("clientStatusUpdated", clientStatus);
            sensorData = JSON.parse(msg.payloadString);
            var temp = msg.destinationName.split("/");
            //console.log(temp[4]);
            //console.log(sensorData);
            if (self.watches.hasOwnProperty(temp[4]))
            {

               // logger.info('Emit: ' + JSON.stringify({id:self.watches[temp[4]],sensorData:sensorData}));

                self.emitter.emit('sendSocket',{id:self.watches[temp[4]],sensorData:sensorData});
            }
            /* if (temp[4] == lighting) {
             //   $rootScope.$broadcast("LightingDataReceived", sensorData);
             }
             if (temp[4] == projector) {
             //  $rootScope.$broadcast("ProjectorDataReceived", sensorData);
             }
             if (temp[4] == heating) {
             //   $rootScope.$broadcast("HeatingISP15DataReceived", sensorData);
             }*/

        };

        var connectOptions = {};
        connectOptions.keepAliveInterval = 3600;
        connectOptions.useSSL = true;
        connectOptions.userName = api_key;
        connectOptions.password = auth_token;

        connectOptions.onSuccess = function () {
            clientStatus.connected = true;
            logger.info("MQTT connected to host: " + wsClient.host + " port : " + wsClient.port + " at " + Date.now());

            self.emitter.emit("clientStatusUpdated", clientStatus);
            self.emitter.emit("clientConnected", self.sockets);
        };

        connectOptions.onFailure = function (e) {
            logger.error("MQTT connection failed at " + Date.now() + "\nerror: " + e.errorCode + " : " + e.errorMessage);
        };

        logger.debug("about to connect to " + wsClient.host);
        wsClient.connect(connectOptions);

        this.sockets =  {
            getClientStatus: function () {
                return clientStatus;
            },
            subscribe: function( deviceId, emitterId) {
                logger.debug("trying to subscribe");
                var subscribeTopic = "iot-2/type/Ti-CC3200/id/" + deviceId + "/evt/+/fmt/json";
                logger.debug(subscribeTopic);

                var subscribeOptions = {
                    qos: 0,
                    onSuccess: function () {
                        console.log("subscribed to " + subscribeTopic);
                        clientStatus.subscribed = true;
                       // $rootScope.$broadcast("clientStatusUpdated", clientStatus);

                        self.emitter.emit("clientStatusUpdated", clientStatus);
                        self.watches[deviceId] = emitterId;
                    },
                    onFailure: function () {
                        console.log("Failed to subscribe to " + subscribeTopic);
                        console.log("As messages are not available, visualization is not possible");
                    }
                };

                /*if (IoTFconnector.prototype.clientStatus.subscribeTopic != "") {
                    console.log("Unsubscribing to " + subscribeTopic);
                    wsClient.unsubscribe(IoTFconnector.prototype.clientStatus.subscribeTopic);
                };*/

                wsClient.subscribe(subscribeTopic, subscribeOptions);
            }
        };


        return this.sockets;

    }
};