feat: Implement new follower of me trigger for twitter

packages/backend/src/apps/twitter/client/endpoints/get-user-followers.ts

@@ -0,0 +1,70 @@
+import { IJSONObject } from '@automatisch/types';
+import { URLSearchParams } from 'url';
+import TwitterClient from '../index';
+import omitBy from 'lodash/omitBy';
+import isEmpty from 'lodash/isEmpty';
+
+export default class GetUserFollowers {
+  client: TwitterClient;
+
+  constructor(client: TwitterClient) {
+    this.client = client;
+  }
+
+  async run(userId: string, lastInternalId?: string) {
+    const token = {
+      key: this.client.connection.formattedData.accessToken as string,
+      secret: this.client.connection.formattedData.accessSecret as string,
+    };
+
+    let response;
+    const followers: IJSONObject[] = [];
+
+    do {
+      const params: IJSONObject = {
+        pagination_token: response?.data?.meta?.next_token,
+      };
+
+      const queryParams = new URLSearchParams(omitBy(params, isEmpty));
+
+      const requestPath = `/2/users/${userId}/followers${
+        queryParams.toString() ? `?${queryParams.toString()}` : ''
+      }`;
+
+      const requestData = {
+        url: `${TwitterClient.baseUrl}${requestPath}`,
+        method: 'GET',
+      };
+
+      const authHeader = this.client.oauthClient.toHeader(
+        this.client.oauthClient.authorize(requestData, token)
+      );
+
+      response = await this.client.httpClient.get(requestPath, {
+        headers: { ...authHeader },
+      });
+
+      if (response.data.meta.result_count > 0) {
+        response.data.data.forEach((tweet: IJSONObject) => {
+          if (!lastInternalId || Number(tweet.id) > Number(lastInternalId)) {
+            followers.push(tweet);
+          } else {
+            return;
+          }
+        });
+      }
+    } while (response.data.meta.next_token && lastInternalId);
+
+    if (response.data?.errors) {
+      const errorMessages = response.data.errors
+        .map((error: IJSONObject) => error.detail)
+        .join(' ');
+
+      throw new Error(
+        `Error occured while fetching user data: ${errorMessages}`
+      );
+    }
+
+    return followers;
+  }
+}

packages/backend/src/apps/twitter/client/index.ts

@@ -9,6 +9,7 @@ import GetUserByUsername from './endpoints/get-user-by-username';
 import GetUserTweets from './endpoints/get-user-tweets';
 import CreateTweet from './endpoints/create-tweet';
 import SearchTweets from './endpoints/search-tweets';
+import GetUserFollowers from './endpoints/get-user-followers';
 
 export default class TwitterClient {
   flow: IFlow;
@@ -24,6 +25,7 @@ export default class TwitterClient {
   getUserTweets: GetUserTweets;
   createTweet: CreateTweet;
   searchTweets: SearchTweets;
+  getUserFollowers: GetUserFollowers;
 
   static baseUrl = 'https://api.twitter.com';
 
@@ -57,5 +59,6 @@ export default class TwitterClient {
     this.getUserTweets = new GetUserTweets(this);
     this.createTweet = new CreateTweet(this);
     this.searchTweets = new SearchTweets(this);
+    this.getUserFollowers = new GetUserFollowers(this);
   }
 }