node-red-contrib-barco-sources-here
Version:
utility to get map information using here map
190 lines (174 loc) • 7.01 kB
JavaScript
module.exports = function(RED) {
const request = require("request");
let _mongoUtils = require("./mongoUtils.js");
let _mqttUtils = require("./mqttUtils.js");
let _config = null;
let _interval = null;
let _node = null;
//let mqtturl = `mqtt://${process.env.MQTT_BROKER}:${process.env.MQTT_PORT}`;
let mqtturl = 'mqtt://10.51.49.122:10101';
// Here mappings
const Here_severities = {
"1": "LOW",
"2": "LOW",
"3": "MED",
"4": "HIGH"
};
const Here_types = {
"1": "Accident",
"2": "Congestion",
"3": "DisabledVehicle",
"4": "MassTransit",
"5": "Miscellaneous",
"6": "OtherNews",
"7": "PlannedEvent",
"8": "RoadHazard",
"9": "Construction",
"10": "Alert",
"11": "Weather"
};
function getHereData(){
const latRad = parseInt(_config.lat) * Math.PI / 180;
let zoom = parseInt(_config.zoom)
const n = Math.pow(2, zoom);
//this._xTile = Math.round(n * ((lon + 180) / 360));
let xTile = Math.round(n * (((parseInt(_config.lon)) + 180) / 360));
let yTile = Math.round(n * (1-(Math.log(Math.tan(latRad) + 1/Math.cos(latRad)) /Math.PI)) / 2);
request.get(
`https://traffic.cit.api.here.com/traffic/6.2/incidents/json/${zoom}/${xTile}/${yTile}?criticality=0,1,2,3&status=active,inactive,deleted,expired&type=Accident,Congestion,DisabledVehicle,RoadHazard,Construction,PlannedEvent,MassTransit,OtherNews,Weather,Misc,RoadClosure,LaneRestriction&app_id=${_config.id}&app_code=${_config.code}`,
(err,res,body)=>{
if(err||res.statusCode!==200){
//error handling
console.log("Error in getting Here response"+err);
}
else {
//save to mongo
let data = JSON.parse(body);
//console.log("Got response from Here: "+JSON.stringify(data));
sendToWorldMap(data);
parseMessage(data, function(message){
_mongoUtils.updateDocument(message, function(err){
if(err){_node.status({fill:"red",shape:"dot",text:RED._("Error in saving update")});}
else {
_mqttUtils.publishEvent(_config.basePath, function(err){
if(err){_node.status({fill:"red",shape:"dot",text:RED._("Error in sending update")});}
else {
_node.status({fill:"green",shape:"dot",text:RED._("Here.status.connected")});
}
});
_node.status({fill:"green",shape:"dot",text:RED._("Here.status.connected")});
}
});
});
}
});
}
function sendToWorldMap(data){
/*let incidents = data.resourceSets[0].resources;
incidents.forEach(e=>{
_node.send({payload:{
"name" : e.description,
"command": {"zoom":3},
"lat": e.point.coordinates[0],
"lon": e.point.coordinates[1],
"photoUrl" : "http://www.universalcargo.com/wp-content/uploads/Shipping_Alert.png"
}}
);
});*/
let message = {payload:{
"mqtt": {
"path":'/com/barco/analytics/map/here',
"url" : mqtturl
},
"rest" : _config.basePath+'/incidents/here'
}};
//console.log("Sending message to worldmap: "+JSON.stringify(message));
_node.send(message);
}
function parseMessage(data, callback){
let returnArray = [];
let incidents = data.TRAFFIC_ITEMS.TRAFFIC_ITEM;
incidents.forEach(e=>{
let ob = {
"type": e.TRAFFIC_ITEM_TYPE_DESC,
"severity": e.CRITICALITY.ID,
"description": {
"short": e.TRAFFIC_ITEM_DESCRIPTION.filter(o=>o.TYPE=="short_desc")[0].value,
"long": e.TRAFFIC_ITEM_DESCRIPTION.filter(o=>o.TYPE=="desc")[0].value
},
"start": e.START_TIME,
"end": e.END_TIME,
"coordinates": {
"lat": e.LOCATION.GEOLOC.ORIGIN.LATITUDE,
"lon": e.LOCATION.GEOLOC.ORIGIN.LONGITUDE
},
"lastModified": e.ENTRY_TIME,
"iconURL": 'http://content.mqcdn.com/mqtraffic/congestion_mod.png',
"source": e
};
returnArray.push(ob);
});
let message = {
"payload": {
"here": {
"source": data,
"incidents": returnArray
}
}
};
callback(message);
}
function getISODateFormat(date, callback){
let oldDate = String(date);
let newDate = oldDate.split("(")[1].split(")")[0];
//console.log("Transformed Date is :"+ newDate);
return callback(new Date(Number(newDate)).toISOString());
}
function HereSource(config) {
RED.nodes.createNode(this,config);
_config = config;
_node = this;
console.log("BasePath is: "+_config.basePath)
if(_config.disable === true){
console.log("Stopping interval")
stopInterval();
} else {
console.log("Starting interval")
setTimeout(function(){getHereData()}, 10000);
startInterval();
}
RED.httpNode.get('/incidents/here', function (req, res) {
_mongoUtils.findDocuments(function(err, msg){
if(err) res.send(err);
else{
//console.log("####got response from mongodb: "+JSON.stringify(msg));
msg = JSON.parse(JSON.stringify(msg));
msg = msg.here;
msg.incidents.forEach(e=>{
e.type = Here_types[String(e.type)];
e.severity = Here_severities[String(e.severity)];
});
res.send(msg);
}
});
}.bind(this));
this.on("close", function (removed, done) {
if (removed) {
_mqttUtils.closeConnection();
}
let node = this;
done();
});
}
function stopInterval() {
_interval && clearInterval(_interval);
_interval = null;
}
function startInterval() {
_interval = setInterval(()=>{
getHereData();
}, 5*60*1000);
}
RED.nodes.registerType("here",HereSource);
};