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node-red/nodes/core/social/27-twitter.js

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/**
* Copyright 2013 IBM Corp.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
**/
var RED = require(process.env.NODE_RED_HOME+"/red/red");
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var ntwitter = require('ntwitter');
var OAuth= require('oauth').OAuth;
function TwitterNode(n) {
RED.nodes.createNode(this,n);
this.screen_name = n.screen_name;
}
RED.nodes.registerType("twitter-credentials",TwitterNode);
function TwitterInNode(n) {
RED.nodes.createNode(this,n);
this.active = true;
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this.user = n.user;
//this.tags = n.tags.replace(/ /g,'');
this.tags = n.tags;
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this.twitter = n.twitter;
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this.topic = n.topic||"tweets";
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this.twitterConfig = RED.nodes.getNode(this.twitter);
var credentials = RED.nodes.getCredentials(this.twitter);
if (credentials && credentials.screen_name == this.twitterConfig.screen_name) {
var twit = new ntwitter({
consumer_key: "OKjYEd1ef2bfFolV25G5nQ",
consumer_secret: "meRsltCktVMUI8gmggpXett7WBLd1k0qidYazoML6g",
access_token_key: credentials.access_token,
access_token_secret: credentials.access_token_secret
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});
var node = this;
if (this.tags !== "") {
try {
var thing = 'statuses/filter';
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if (this.user == "true") { thing = 'user'; }
var st = { track: [node.tags] };
var bits = node.tags.split(",");
if ((bits.length > 0) && (bits.length % 4 == 0)) {
if ((Number(bits[0]) < Number(bits[2])) && (Number(bits[1]) < Number(bits[3]))) {
st = { locations: node.tags };
}
else {
node.warn("twitter: possible bad geo area format. Should be lower-left lon,lat, upper-right lon,lat");
}
}
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function setupStream() {
if (node.active) {
twit.stream(thing, st, function(stream) {
//console.log(st);
//twit.stream('user', { track: [node.tags] }, function(stream) {
//twit.stream('site', { track: [node.tags] }, function(stream) {
//twit.stream('statuses/filter', { track: [node.tags] }, function(stream) {
node.stream = stream;
stream.on('data', function(tweet) {
//console.log(tweet.user);
if (tweet.user !== undefined) {
var where = tweet.user.location||"";
var la = tweet.lang || tweet.user.lang;
//console.log(tweet.user.location,"=>",tweet.user.screen_name,"=>",pay);
var msg = { topic:node.topic+"/"+tweet.user.screen_name, payload:tweet.text, location:where, lang:la, tweet:tweet };
node.send(msg);
}
});
stream.on('limit', function(tweet) {
node.log("tweet rate limit hit");
});
stream.on('error', function(tweet,rc) {
node.warn(tweet);
setTimeout(setupStream,10000);
});
stream.on('destroy', function (response) {
if (this.active) {
node.warn("twitter ended unexpectedly");
setTimeout(setupStream,10000);
}
});
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});
}
}
setupStream();
}
catch (err) {
node.error(err);
}
} else {
this.error("Invalid tag property");
}
} else {
this.error("missing twitter credentials");
}
this.on('close', function() {
if (this.stream) {
this.active = false;
this.stream.destroy();
}
});
}
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RED.nodes.registerType("twitter in",TwitterInNode);
function TwitterOutNode(n) {
RED.nodes.createNode(this,n);
this.topic = n.topic;
this.twitter = n.twitter;
this.twitterConfig = RED.nodes.getNode(this.twitter);
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var credentials = RED.nodes.getCredentials(this.twitter);
var node = this;
if (credentials && credentials.screen_name == this.twitterConfig.screen_name) {
var twit = new ntwitter({
consumer_key: "OKjYEd1ef2bfFolV25G5nQ",
consumer_secret: "meRsltCktVMUI8gmggpXett7WBLd1k0qidYazoML6g",
access_token_key: credentials.access_token,
access_token_secret: credentials.access_token_secret
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}).verifyCredentials(function (err, data) {
if (err) {
node.error("Error verifying credentials: " + err);
} else {
node.on("input", function(msg) {
if (msg != null) {
if (msg.payload.length > 140) {
msg.payload = msg.payload.slice(0,139);
node.warn("Tweet greater than 140 : truncated");
}
twit.updateStatus(msg.payload, function (err, data) {
if (err) node.error(err);
});
}
});
}
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});
}
}
RED.nodes.registerType("twitter out",TwitterOutNode);
var oa = new OAuth(
"https://api.twitter.com/oauth/request_token",
"https://api.twitter.com/oauth/access_token",
"OKjYEd1ef2bfFolV25G5nQ",
"meRsltCktVMUI8gmggpXett7WBLd1k0qidYazoML6g",
"1.0",
null,
"HMAC-SHA1"
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);
var credentials = {};
RED.app.get('/twitter/:id', function(req,res) {
var credentials = RED.nodes.getCredentials(req.params.id);
if (credentials) {
res.send(JSON.stringify({sn:credentials.screen_name}));
} else {
res.send(JSON.stringify({}));
}
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});
RED.app.delete('/twitter/:id', function(req,res) {
RED.nodes.deleteCredentials(req.params.id);
res.send(200);
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});
RED.app.get('/twitter/:id/auth', function(req, res){
var credentials = {};
oa.getOAuthRequestToken({
oauth_callback: req.query.callback
},function(error, oauth_token, oauth_token_secret, results){
if (error) {
console.log(error);
res.send("yeah no. didn't work.")
}
else {
credentials.oauth_token = oauth_token;
credentials.oauth_token_secret = oauth_token_secret;
res.redirect('https://twitter.com/oauth/authorize?oauth_token='+oauth_token)
RED.nodes.addCredentials(req.params.id,credentials);
}
});
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});
RED.app.get('/twitter/:id/auth/callback', function(req, res, next){
var credentials = RED.nodes.getCredentials(req.params.id);
credentials.oauth_verifier = req.query.oauth_verifier;
oa.getOAuthAccessToken(
credentials.oauth_token,
credentials.token_secret,
credentials.oauth_verifier,
function(error, oauth_access_token, oauth_access_token_secret, results){
if (error){
console.log(error);
res.send("yeah something broke.");
} else {
credentials = {};
credentials.access_token = oauth_access_token;
credentials.access_token_secret = oauth_access_token_secret;
credentials.screen_name = "@"+results.screen_name;
RED.nodes.addCredentials(req.params.id,credentials);
res.send("<html><head></head><body>Authorised - you can close this window and return to Node-RED</body></html>");
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}
}
);
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});