Fixed same link tweeting issue

README.md

@@ -1,4 +1,4 @@
-# Tweem (0.1.4)
+# Tweem (0.1.5)
 Tweem is a bot that automatically tweets all the resteems and/or recent posts of specified accounts.
 
 ## Deploy
@@ -49,6 +49,7 @@ Here are all the configuration possibilities:
 * **stream_nodes:** list of RPC nodes to be used by the app to stream operations (those can be low memory nodes)
 * **template:** template for the tweet (explained in 'Create your own template')
 * **tweet_retry_timeout:** time in milliseconds to wait for before retrying to tweet if it failed (default: 10000)
+* **twitter_handle:** the **Twitter** handle used by the bot, aka your **Twitter** handle (default: 'RagePeanut_')
 
 ## Create your own template
 **Tweems** aims to be the most configurable sharing bot on the **Steem** blockchain, that's why you can change how your tweets will look by changing their template. Let's take a look at the default template to understand what's happening.

app.js

@@ -2,7 +2,7 @@ const Twit = require('twit');
 const steemStream = require('steem');
 const steemRequest = require('steem');
 
-const { request_nodes, settings, steem_accounts, stream_nodes, tweet_retry_timeout } = require('./config');
+const { request_nodes, settings, steem_accounts, stream_nodes, tweet_retry_timeout, twitter_handle } = require('./config');
 
 const twitter = new Twit({
     consumer_key: process.env.CONSUMER_KEY,
@@ -36,11 +36,15 @@ function stream() {
                 const op = JSON.parse(operation[1].json);
                 // Checking if it's a resteem and if it's from one of the specified accounts
                 if(op[0] === 'reblog' && steem_accounts.resteems.includes(op[1].account)) {
-                    treatOperation(op[1].author, op[1].permlink, op[0]);
+                    isAlreadyTweeted(op[1].author, op[1].permlink)
+                        .then(alreadyTweeted => !alreadyTweeted && treatOperation(op[1].author, op[1].permlink, op[0]))
+                        .catch(err => console.err('Twitter search API error:', err.message));
                 }
             // Checking if it's a post (not a comment) made by one of the specified accounts
             } else if(settings.tweet_posts && operation[0] === 'comment' && steem_accounts.posts.includes(operation[1].author) && operation[1].parent_author === '') {
-                treatOperation(operation[1].author, operation[1].permlink, operation[0]);
+                isAlreadyTweeted(operation[1].author, operation[1].permlink)
+                    .then(alreadyTweeted => !alreadyTweeted && treatOperation(operation[1].author, operation[1].permlink, operation[0]))
+                    .catch(err => console.error('Twitter search API error:', err.message));
             }
         });
     // If an error occured, add 1 to the index and put it at 0 if it is out of bound
@@ -70,6 +74,16 @@ function tweet(message) {
     });
 }
 
+// Checks if the link has already been tweeted in the last 7 days
+function isAlreadyTweeted(author, permlink) {
+    return new Promise((resolve, reject) => {
+        twitter.get('search/tweets', { q: 'from:' + twitter_handle + ' url:' + author + ' url:' + permlink }, (err, data, response) => {
+            if(err) return reject(err);
+            resolve(data.statuses.length > 0);
+        });
+    });
+}
+
 // Gets the website from which the post has been made if it can view posts
 function getWebsite(app, author, permlink, url, tags, body) {
     if(!settings.allowed_apps[app]) return null;

config.json

@@ -58,5 +58,6 @@
         "https://rpc.steemviz.com",
         "https://steemd.minnowsupportproject.org"
     ],
-    "tweet_retry_timeout": 10000
+    "tweet_retry_timeout": 10000,
+    "twitter_handle": "RagePeanut_"
 }

package.json

@@ -1,6 +1,6 @@
 {
   "name": "tweem",
-  "version": "0.1.4",
+  "version": "0.1.5",
   "description": "A bot tweeting all the resteems and/or recent posts of specified accounts.",
   "main": "app.js",
   "scripts": {