use only bearer token

.env.example

@@ -1,4 +1,2 @@
 CONSUMER_KEY=
 CONSUMER_SECRET=
-ACCESS_TOKEN_KEY=
-ACCESS_TOKEN_SECRET=

.gitignore

@@ -2,3 +2,4 @@
 node_modules/
 .env
 yarn-error.log
+users.txt

README.md

@@ -9,7 +9,6 @@ The concept is easy and straightforward but the realization encompasses a lot of
 
 You can read more about the realization of this project on the [HackerTyper Blog](https://blog.hackertyper.net/post/twitter-interaction-circles-guide/)
 
-
 ## Installation
 ```shell script
 git clone git@github.com:duiker101/twitter-interaction-circle.git
@@ -31,13 +30,15 @@ The output will go in `users.txt` file in the root of the project
 ## Setup
 To use the project you will need Twitter API keys. You can get one on the [developer portal](https://developer.twitter.com).
 
-Once you have them, rename the `.env.example` file `.env` and put them in there, it should look like this:
+As this project uses only public data, you don't need an authorization key, but you can generate a Bearer Token. This will prevent you from fetching any private data but will grant you slightly higher rate limiting.
+
+More information about Twitter's bearer tokens can be found [here](https://developer.twitter.com/en/docs/basics/authentication/oauth-2-0)
+
+Once you have your consumer keys, rename the `.env.example` file `.env` and put them in there, it should look like this:
 
 ```dotenv
-CONSUMER_KEY=AAAAAAA
-CONSUMER_SECRET=BBBBBBB
-ACCESS_TOKEN_KEY=CCCCCCC
-ACCESS_TOKEN_SECRET=DDDDD
+CONSUMER_KEY=AAAA
+CONSUMER_SECRET=BBBBBB
 ```
 
 Make sure you don't have spaces.

src/api.js

@@ -1,21 +1,3 @@
-const Twitter = require("twitter-lite");
-
-/**
- * The environment variable are provided by the dotenv via the .env file
- */
-const dotenv = require("dotenv");
-dotenv.config();
-
-/**
- * Create an instance of the API Client that we will use.
- * @type {Twitter}
- */
-const client = new Twitter({
-	consumer_key: process.env.CONSUMER_KEY,
-	consumer_secret: process.env.CONSUMER_SECRET,
-	access_token_key: process.env.ACCESS_TOKEN_KEY,
-	access_token_secret: process.env.ACCESS_TOKEN_SECRET,
-});
 
 /**
  * Fetch a single page of the timeline
@@ -32,7 +14,7 @@ async function getTimelinePage(screen_name, page, max_id = null) {
 	};
 
 	console.log("Fetching Timeline page " + page);
-	const res = await client.get("statuses/user_timeline", params);
+	const res = await globalThis.TwitterClient.get("statuses/user_timeline", params);
 	return res;
 }
 
@@ -71,7 +53,7 @@ async function getLikedPage(screen_name, page, max_id = null) {
 	};
 
 	console.log("Fetching Liked page " + page);
-	const res = await client.get("favorites/list", params);
+	const res = await globalThis.TwitterClient.get("favorites/list", params);
 	return res;
 }
 
@@ -107,7 +89,7 @@ async function getAvatars(ids) {
 
 	console.log("Fetching avatars " + ids.length);
 
-	const res = await client.get("users/lookup", params);
+	const res = await globalThis.TwitterClient.get("users/lookup", params);
 
 	return Object.fromEntries(
 		res.map((user) => [
@@ -117,21 +99,6 @@ async function getAvatars(ids) {
 	);
 }
 
-/**
- * Return informations about the currently logged in user
- * @returns {Promise<{screen_name: string, id: string, avatar: string}>}
- */
-async function getMe() {
-	console.log("Fetching me");
-	const res = await client.get("account/verify_credentials");
-
-	return {
-		id: res.id_str,
-		screen_name: res.screen_name,
-		avatar: res.profile_image_url_https.replace("normal", "400x400"),
-	};
-}
-
 /**
  * Return information about a single specific user
  * @returns {Promise<{screen_name: string, id: string, avatar: string}>}
@@ -143,7 +110,7 @@ async function getUser(screen_name) {
 	};
 
 	console.log("Fetching user " + screen_name);
-	const res = (await client.get("users/lookup", params))[0];
+	const res = (await globalThis.TwitterClient.get("users/lookup", params))[0];
 
 	return {
 		id: res.id_str,
@@ -156,6 +123,5 @@ module.exports = {
 	getLiked,
 	getTimeline,
 	getAvatars,
-	getMe,
 	getUser
 };

src/index.js

@@ -1,16 +1,38 @@
+const dotenv = require("dotenv");
 const getInteractions = require("./data");
 const render = require("./image");
-const {getMe, getUser} = require("./api");
+const {getUser} = require("./api");
 const {renderText} = require("./text");
+const Twitter = require("twitter-lite");
+
+/**
+ * Load the environment variables from the .env file
+ */
+dotenv.config();
 
 /**
  * This is the main function of the app. It need to be a function because we can't have a top level await.
  */
 async function main() {
+	// Create an instance of the API client using the consumer keys for your app
+	const client = new Twitter({
+		consumer_key: process.env.CONSUMER_KEY,
+		consumer_secret: process.env.CONSUMER_SECRET,
+	});
+
+	// Use the previous client to fetch the bearer token
+	// This method gives you an application-only token specifically for read-only access to public information.
+	const bearer = await client.getBearerToken();
+
+	// Create a new twitter client with this token.
+	// We assign this client to a global variable so we can access it in the api module
+	globalThis.TwitterClient = new Twitter({
+		bearer_token: bearer.access_token,
+	});
+
 	// fetch the information of the logged in user
 	// instead of getMe you could replace it with another method to get a third user to generate their circles
-	const user = await getMe();
-	// const user = await getUser(USERNAME);
+	const user = await getUser("WHATEVER_USERNAME_YOU_WANT");
 
 	// this is how many users we will have for each layer from the inside out
 	const layers = [8, 15, 26];