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27-twitter.js
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module.exports = function(RED) {
"use strict";
var Ntwitter = require('twitter-ng');
var request = require('request');
var crypto = require('crypto');
// var fileType = require('file-type');
var twitterRateTimeout;
var retry = 60000; // 60 secs backoff for now
var localUserCache = {};
var userObjectCache = {};
var userSreenNameToIdCache = {};
function TwitterCredentialsNode(n) {
RED.nodes.createNode(this,n);
this.screen_name = n.screen_name;
if (this.screen_name && this.screen_name[0] === "@") {
this.screen_name = this.screen_name.substring(1);
}
if (this.credentials.consumer_key &&
this.credentials.consumer_secret &&
this.credentials.access_token &&
this.credentials.access_token_secret) {
this.oauth = {
consumer_key: this.credentials.consumer_key,
consumer_secret: this.credentials.consumer_secret,
token: this.credentials.access_token,
token_secret: this.credentials.access_token_secret
}
this.credHash = crypto.createHash('sha1').update(
this.credentials.consumer_key+this.credentials.consumer_secret+
this.credentials.access_token+this.credentials.access_token_secret
).digest('base64');
var self = this;
if (localUserCache.hasOwnProperty(self.credHash)) {
this.localIdentityPromise = Promise.resolve(localUserCache[self.credHash]);
} else {
this.localIdentityPromise = this.get("https://api.twitter.com/1.1/account/settings.json").then(function(body) {
if (body.status === 200) {
localUserCache[self.credHash] = body.body.screen_name;
self.screen_name = body.body.screen_name;
} else {
self.warn("Failed to get user profile");
}
});
}
}
}
RED.nodes.registerType("twitter-credentials",TwitterCredentialsNode,{
credentials: {
consumer_key: { type: "password"},
consumer_secret: { type: "password" },
access_token: {type: "password"},
access_token_secret: {type:"password"}
}
});
TwitterCredentialsNode.prototype.get = function(url,opts) {
var node = this;
opts = opts || {};
opts.tweet_mode = 'extended';
return new Promise(function(resolve,reject) {
request.get({
url: url,
oauth: node.oauth,
json: true,
qs: opts
}, function(err, response,body) {
if (err) {
reject(err);
} else {
resolve({
status: response.statusCode,
rateLimitRemaining: response.headers['x-rate-limit-remaining'],
rateLimitTimeout: 5000+parseInt(response.headers['x-rate-limit-reset'])*1000 - Date.now(),
body: body
});
}
});
})
}
TwitterCredentialsNode.prototype.post = function(url,data,opts,formData) {
var node = this;
opts = opts || {};
var options = {
url: url,
oauth: node.oauth,
json: true,
qs: opts,
};
if (data) {
options.body = data;
}
if (formData) {
options.formData = formData;
}
return new Promise(function(resolve,reject) {
request.post(options, function(err, response,body) {
if (err) {
reject(err);
} else {
resolve({
status: response.statusCode,
rateLimitRemaining: response.headers['x-rate-limit-remaining'],
rateLimitTimeout: 5000+parseInt(response.headers['x-rate-limit-reset'])*1000 - Date.now(),
body: body
});
}
});
})
}
TwitterCredentialsNode.prototype.getUsers = function(users,getBy) {
if (users.length === 0) {
return Promise.resolve();
}
var params = {};
params[getBy||"user_id"] = users;
return this.get("https://api.twitter.com/1.1/users/lookup.json",params).then(function(result) {
var res = result.body;
if (res.errors) {
throw new Error(res.errors[0].message);
}
res.forEach(user => {
userObjectCache[user.id_str] = user
userSreenNameToIdCache[user.screen_name] = user.id_str;
});
})
}
/**
* Populate msg.location based on data found in msg.tweet.
*/
function addLocationToTweet(msg) {
if (msg.tweet) {
if (msg.tweet.geo) { // if geo is set, always set location from geo
if (msg.tweet.geo.coordinates && msg.tweet.geo.coordinates.length === 2) {
if (!msg.location) { msg.location = {}; }
// coordinates[0] is lat, coordinates[1] is lon
msg.location.lat = msg.tweet.geo.coordinates[0];
msg.location.lon = msg.tweet.geo.coordinates[1];
msg.location.icon = "twitter";
}
}
else if (msg.tweet.coordinates) { // otherwise attempt go get it from coordinates
if (msg.tweet.coordinates.coordinates && msg.tweet.coordinates.coordinates.length === 2) {
if (!msg.location) { msg.location = {}; }
// WARNING! coordinates[1] is lat, coordinates[0] is lon!!!
msg.location.lat = msg.tweet.coordinates.coordinates[1];
msg.location.lon = msg.tweet.coordinates.coordinates[0];
msg.location.icon = "twitter";
}
} // if none of these found then just do nothing
} // if no msg.tweet then just do nothing
}
function TwitterInNode(n) {
RED.nodes.createNode(this,n);
this.active = true;
this.user = n.user;
//this.tags = n.tags.replace(/ /g,'');
this.tags = n.tags||"";
this.twitter = n.twitter;
this.topic = "tweets";
this.twitterConfig = RED.nodes.getNode(this.twitter);
this.poll_ids = [];
this.timeout_ids = [];
var credentials = RED.nodes.getCredentials(this.twitter);
this.status({});
if (this.twitterConfig.oauth) {
var node = this;
if (this.user === "true") {
// Poll User Home Timeline 1/min
this.poll(60000,"https://api.twitter.com/1.1/statuses/home_timeline.json");
} else if (this.user === "user") {
var users = node.tags.split(/\s*,\s*/).filter(v=>!!v);
if (users.length === 0) {
node.error(RED._("twitter.warn.nousers"));
return;
}
// Poll User timeline
users.forEach(function(user) {
node.poll(60000,"https://api.twitter.com/1.1/statuses/user_timeline.json",{screen_name: user});
})
} else if (this.user === "dm") {
node.pollDirectMessages();
} else if (this.user === "event") {
this.error("This Twitter node is configured to access a user's activity stream. Twitter removed this API in August 2018 and is no longer available.");
return;
} else if (this.user === "false") {
var twit = new Ntwitter({
consumer_key: credentials.consumer_key,
consumer_secret: credentials.consumer_secret,
access_token_key: credentials.access_token,
access_token_secret: credentials.access_token_secret
});
// Stream public tweets
try {
var thing = 'statuses/filter';
var tags = node.tags;
var st = { track: [tags] };
var setupStream = function() {
if (node.restart) {
node.status({fill:"green", shape:"dot", text:(tags||" ")});
twit.stream(thing, st, function(stream) {
//console.log("ST",st);
node.stream = stream;
stream.on('data', function(tweet) {
if (tweet.user !== undefined) {
var where = tweet.user.location;
var la = tweet.lang || tweet.user.lang;
var msg = { topic:node.topic+"/"+tweet.user.screen_name, payload:tweet.text, lang:la, tweet:tweet };
if (where) {
msg.location = {place:where};
addLocationToTweet(msg);
}
node.send(msg);
//node.status({fill:"green", shape:"dot", text:(tags||" ")});
}
});
stream.on('limit', function(tweet) {
//node.status({fill:"grey", shape:"dot", text:RED._("twitter.errors.limitrate")});
node.status({fill:"grey", shape:"dot", text:(tags||" ")});
node.tout2 = setTimeout(function() { node.status({fill:"green", shape:"dot", text:(tags||" ")}); },10000);
});
stream.on('error', function(tweet,rc) {
//console.log("ERRO",rc,tweet);
if (rc == 420) {
node.status({fill:"red", shape:"ring", text:RED._("twitter.errors.ratelimit")});
}
else {
node.status({fill:"red", shape:"ring", text:tweet.toString()});
node.warn(RED._("twitter.errors.streamerror",{error:tweet.toString(),rc:rc}));
}
twitterRateTimeout = Date.now() + retry;
if (node.restart) {
node.tout = setTimeout(function() { setupStream() },retry);
}
});
stream.on('destroy', function (response) {
//console.log("DEST",response)
twitterRateTimeout = Date.now() + 15000;
if (node.restart) {
node.status({fill:"red", shape:"dot", text:" "});
node.warn(RED._("twitter.errors.unexpectedend"));
node.tout = setTimeout(function() { setupStream() },15000);
}
});
});
}
}
// if 4 numeric tags that look like a geo area then set geo area
var bits = node.tags.split(",");
if (bits.length == 4) {
if ((Number(bits[0]) < Number(bits[2])) && (Number(bits[1]) < Number(bits[3]))) {
st = { locations: node.tags };
node.log(RED._("twitter.status.using-geo",{location:node.tags.toString()}));
}
}
// all public tweets
if (this.user === "false") {
node.on("input", function(msg) {
if (this.tags === '') {
if (node.tout) { clearTimeout(node.tout); }
if (node.tout2) { clearTimeout(node.tout2); }
if (this.stream) {
this.restart = false;
node.stream.removeAllListeners();
this.stream.destroy();
}
if ((typeof msg.payload === "string") && (msg.payload !== "")) {
st = { track:[msg.payload] };
tags = msg.payload;
this.restart = true;
if ((twitterRateTimeout - Date.now()) > 0 ) {
node.status({fill:"red", shape:"ring", text:tags});
node.tout = setTimeout(function() {
setupStream();
}, twitterRateTimeout - Date.now() );
}
else {
setupStream();
}
}
else {
node.status({fill:"yellow", shape:"ring", text:RED._("twitter.warn.waiting")});
}
}
});
}
// wait for input or start the stream
if ((this.user === "false") && (tags === '')) {
node.status({fill:"yellow", shape:"ring", text:RED._("twitter.warn.waiting")});
}
else {
this.restart = true;
setupStream();
}
}
catch (err) {
node.error(err);
}
}
this.on('close', function() {
if (this.tout) { clearTimeout(this.tout); }
if (this.tout2) { clearTimeout(this.tout2); }
if (this.stream) {
this.restart = false;
this.stream.removeAllListeners();
this.stream.destroy();
}
if (this.timeout_ids) {
for (var i=0; i<this.timeout_ids.length; i++) {
clearTimeout(this.timeout_ids[i]);
}
}
if (this.poll_ids) {
for (var i=0; i<this.poll_ids.length; i++) {
clearInterval(this.poll_ids[i]);
}
}
});
} else {
this.error(RED._("twitter.errors.missingcredentials"));
}
}
RED.nodes.registerType("twitter in",TwitterInNode);
TwitterInNode.prototype.poll = function(interval, url, opts) {
var node = this;
var opts = opts || {};
var pollId;
opts.count = 1;
this.twitterConfig.get(url,opts).then(function(result) {
if (result.status === 429) {
node.warn("Rate limit hit. Waiting "+Math.floor(result.rateLimitTimeout/1000)+" seconds to try again");
node.timeout_ids.push(setTimeout(function() {
node.poll(interval,url,opts);
},result.rateLimitTimeout))
return;
}
node.debug("Twitter Poll, rateLimitRemaining="+result.rateLimitRemaining+" rateLimitTimeout="+Math.floor(result.rateLimitTimeout/1000)+"s");
var res = result.body;
opts.count = 200;
var since = "0";
if (res.length > 0) {
since = res[0].id_str;
}
pollId = setInterval(function() {
opts.since_id = since;
node.twitterConfig.get(url,opts).then(function(result) {
if (result.status === 429) {
node.warn("Rate limit hit. Waiting "+Math.floor(result.rateLimitTimeout/1000)+" seconds to try again");
clearInterval(pollId);
node.timeout_ids.push(setTimeout(function() {
node.poll(interval,url,opts);
},result.rateLimitTimeout))
return;
}
node.debug("Twitter Poll, rateLimitRemaining="+result.rateLimitRemaining+" rateLimitTimeout="+Math.floor(result.rateLimitTimeout/1000)+"s");
var res = result.body;
if (res.errors) {
node.error(res.errors[0].message);
if (res.errors[0].code === 44) {
// 'since_id parameter is invalid' - reset it for next time
delete opts.since_id;
}
clearInterval(pollId);
node.timeout_ids.push(setTimeout(function() {
node.poll(interval,url,opts);
},interval))
return;
}
if (res.length > 0) {
since = res[0].id_str;
var len = res.length;
for (var i = len-1; i >= 0; i--) {
var tweet = res[i];
if (tweet.user !== undefined) {
var where = tweet.user.location;
var la = tweet.lang || tweet.user.lang;
tweet.text = tweet.text || tweet.full_text;
var msg = {
topic:"tweets/"+tweet.user.screen_name,
payload:tweet.text,
lang:la,
tweet:tweet
};
if (where) {
msg.location = {place:where};
addLocationToTweet(msg);
}
node.send(msg);
}
}
}
}).catch(function(err) {
node.error(err);
clearInterval(pollId);
node.timeout_ids.push(setTimeout(function() {
delete opts.since_id;
delete opts.count;
node.poll(interval,url,opts);
},interval))
})
},interval)
node.poll_ids.push(pollId);
}).catch(function(err) {
node.error(err);
node.timeout_ids.push(setTimeout(function() {
delete opts.since_id;
delete opts.count;
node.poll(interval,url,opts);
},interval))
})
}
TwitterInNode.prototype.pollDirectMessages = function() {
var interval = 70000;
var node = this;
var opts = {};
var url = "https://api.twitter.com/1.1/direct_messages/events/list.json";
var pollId;
opts.count = 50;
this.twitterConfig.get(url,opts).then(function(result) {
if (result.status === 429) {
node.warn("Rate limit hit. Waiting "+Math.floor(result.rateLimitTimeout/1000)+" seconds to try again");
node.timeout_ids.push(setTimeout(function() {
node.pollDirectMessages();
},result.rateLimitTimeout))
return;
}
node.debug("Twitter DM Poll, rateLimitRemaining="+result.rateLimitRemaining+" rateLimitTimeout="+Math.floor(result.rateLimitTimeout/1000)+"s");
var res = result.body;
if (res.errors) {
node.error(res.errors[0].message);
node.timeout_ids.push(setTimeout(function() {
node.pollDirectMessages();
},interval))
return;
}
var since = "0";
var messages = res.events.filter(tweet => tweet.type === 'message_create' && tweet.id > since);
if (messages.length > 0) {
since = messages[0].id;
}
pollId = setInterval(function() {
node.twitterConfig.get(url,opts).then(function(result) {
if (result.status === 429) {
node.warn("Rate limit hit. Waiting "+Math.floor(result.rateLimitTimeout/1000)+" seconds to try again");
clearInterval(pollId);
node.timeout_ids.push(setTimeout(function() {
node.pollDirectMessages();
},result.rateLimitTimeout))
return;
}
node.debug("Twitter DM Poll, rateLimitRemaining="+result.rateLimitRemaining+" rateLimitTimeout="+Math.floor(result.rateLimitTimeout/1000)+"s");
var res = result.body;
if (res.errors) {
node.error(res.errors[0].message);
clearInterval(pollId);
node.timeout_ids.push(setTimeout(function() {
node.pollDirectMessages();
},interval))
return;
}
var messages = res.events.filter(tweet => tweet.type === 'message_create' && tweet.id > since);
if (messages.length > 0) {
since = messages[0].id;
var len = messages.length;
var missingUsers = {};
var tweets = [];
for (var i = len-1; i >= 0; i--) {
var tweet = messages[i];
// node.log(JSON.stringify(tweet," ",4));
var output = {
id: tweet.id,
id_str: tweet.id,
text: tweet.message_create.message_data.text,
created_timestamp: tweet.created_timestamp,
entities: tweet.message_create.message_data.entities
}
if (!userObjectCache.hasOwnProperty(tweet.message_create.sender_id)) {
missingUsers[tweet.message_create.sender_id] = true;
}
if (!userObjectCache.hasOwnProperty(tweet.message_create.target.recipient_id)) {
missingUsers[tweet.message_create.target.recipient_id] = true;
}
tweets.push(output);
}
var missingUsernames = Object.keys(missingUsers).join(",");
return node.twitterConfig.getUsers(missingUsernames).then(function() {
var len = tweets.length;
for (var i = 0; i < len; i++) {
var tweet = messages[i];
var output = tweets[i];
output.sender = userObjectCache[tweet.message_create.sender_id];
output.sender_id = output.sender.id;
output.sender_id_str = output.sender.id_str;
output.sender_screen_name = output.sender.screen_name;
output.recipient = userObjectCache[tweet.message_create.target.recipient_id];
output.recipient_id = output.recipient.id;
output.recipient_id_str = output.recipient.id_str;
output.recipient_screen_name = output.recipient.screen_name;
if (output.sender_screen_name !== node.twitterConfig.screen_name) {
var msg = {
topic:"tweets/"+output.sender_screen_name,
payload:output.text,
tweet:output
};
node.send(msg);
}
}
})
}
}).catch(function(err) {
node.error(err);
clearInterval(pollId);
node.timeout_ids.push(setTimeout(function() {
node.pollDirectMessages();
},interval))
})
},interval)
node.poll_ids.push(pollId);
}).catch(function(err) {
node.error(err);
node.timeout_ids.push(setTimeout(function() {
node.pollDirectMessages();
},interval))
})
}
function TwitterOutNode(n) {
RED.nodes.createNode(this,n);
this.topic = n.topic;
this.twitter = n.twitter;
this.twitterConfig = RED.nodes.getNode(this.twitter);
var credentials = RED.nodes.getCredentials(this.twitter);
var node = this;
node.status({});
if (this.twitterConfig.oauth) {
var twit = new Ntwitter({
consumer_key: credentials.consumer_key,
consumer_secret: credentials.consumer_secret,
access_token_key: credentials.access_token,
access_token_secret: credentials.access_token_secret
});
node.on("input", function(msg) {
if (msg.hasOwnProperty("payload") || msg.hasOwnProperty("retweet")) {
node.status({fill:"blue",shape:"dot",text:"twitter.status.tweeting"});
if (msg.payload.slice(0,2).toLowerCase() === "d ") {
var dm_user;
// direct message syntax: "D user message"
var t = msg.payload.match(/D\s+(\S+)\s+(.*)/).slice(1);
dm_user = t[0];
msg.payload = t[1];
var lookupPromise;
if (userSreenNameToIdCache.hasOwnProperty(dm_user)) {
lookupPromise = Promise.resolve();
} else {
lookupPromise = node.twitterConfig.getUsers(dm_user,"screen_name")
}
lookupPromise.then(function() {
if (userSreenNameToIdCache.hasOwnProperty(dm_user)) {
// Send a direct message
node.twitterConfig.post("https://api.twitter.com/1.1/direct_messages/events/new.json",{
event: {
type: "message_create",
"message_create": {
"target": {
"recipient_id": userSreenNameToIdCache[dm_user]
},
"message_data": {"text": msg.payload}
}
}
}).then(function() {
node.status({});
}).catch(function(err) {
node.error(err,msg);
node.status({fill:"red",shape:"ring",text:"twitter.status.failed"});
});
} else {
node.error("Unknown user",msg);
node.status({fill:"red",shape:"ring",text:"twitter.status.failed"});
}
}).catch(function(err) {
node.error(err,msg);
node.status({fill:"red",shape:"ring",text:"twitter.status.failed"});
})
} else if (msg.retweet) {
node.twitterConfig.post("https://api.twitter.com/1.1/statuses/retweet/" + msg.retweet,{},msg.params || {})
.then(function(result) {
if (result.status === 200) {
node.status({});
} else {
node.status({fill:"red",shape:"ring",text:"twitter.status.failed"});
if ('error' in result.body && typeof result.body.error === 'string') {
node.error(result.body.error,msg);
} else {
node.error(result.body.errors[0].message,msg);
}
}
}).catch(function(err) {
node.status({fill:"red",shape:"ring",text:"twitter.status.failed"});
node.error(err,msg);
})
} else {
if (msg.payload.length > 280) {
msg.payload = msg.payload.slice(0,279);
node.warn(RED._("twitter.errors.truncated"));
}
var mediaPromise;
if (msg.media && Buffer.isBuffer(msg.media)) {
// var mediaType = fileType(msg.media);
// if (mediaType === null) {
// node.status({fill:"red",shape:"ring",text:"twitter.status.failed"});
// node.error("msg.media is not a valid media object",msg);
// return;
// }
mediaPromise = node.twitterConfig.post("https://upload.twitter.com/1.1/media/upload.json",null,null,{
media: msg.media
}).then(function(result) {
if (result.status === 200) {
return result.body.media_id_string;
} else {
throw new Error(result.body.errors[0]);
}
});
} else {
mediaPromise = Promise.resolve();
}
mediaPromise.then(function(mediaId) {
var params = msg.params || {};
params.status = msg.payload;
if (mediaId) {
params.media_ids = mediaId;
}
node.twitterConfig.post("https://api.twitter.com/1.1/statuses/update.json",{},params).then(function(result) {
if (result.status === 200) {
node.status({});
} else {
node.status({fill:"red",shape:"ring",text:"twitter.status.failed"});
if ('error' in result.body && typeof result.body.error === 'string') {
node.error(result.body.error,msg);
} else {
node.error(result.body.errors[0].message,msg);
}
}
}).catch(function(err) {
node.status({fill:"red",shape:"ring",text:"twitter.status.failed"});
node.error(err,msg);
})
}).catch(function(err) {
node.status({fill:"red",shape:"ring",text:"twitter.status.failed"});
node.error(err,msg);
});
}
}
});
} else {
this.error(RED._("twitter.errors.missingcredentials"));
}
}
RED.nodes.registerType("twitter out",TwitterOutNode);
}