twitterAPI.js

const axios = require('axios');
const { TWITTER_TOKEN } = require("./config");

/**
 * Functionality for Getting my 100 Days of Code Tweets
 *
 * TODO: look into adding pagination so that I'm only fetching
 * 20 or so tweets at a time. Right now tweet count defaults to 50.
*/
class TwitterAPI {
  constructor(user = "1398406010") {
    this.userId = user;
    this.baseUrl = "https://api.twitter.com/2";
    // Tags idea may be lame... the thought is to create a few categories,
    // that way the blog menu could be used to get different groups of pre-set
    // texts... I'll start it this way and see how it goes.
    this.tags = {
      hundredDays: [
        "100DaysOfCode", "100daysofcode", "100Daysofcode", "100DaysofCode"
      ],
      javascript: [
        "JavaScript", "javascript", "Javascript"
      ]
    };
  }

  /** Gets Tweets by User, excludes replies and retweets.
   * Accept tweetcount, but defaults to 50 tweets.
   *  */
  async getMyTweets(tweetCount = "50") {
    let options = {
      method: 'GET',
      url: `${this.baseUrl}/users/${this.userId}/tweets`,
      params: {
        'exclude': 'retweets,replies',
        'tweet.fields': 'entities',
        'max_results': tweetCount
      },
      headers: {
        'Authorization': "Bearer " + TWITTER_TOKEN,
      }
    };
    try {
      const response = await axios(options);
      return response.data.data;
    } catch (e) {
      console.error("Error: TwitterAPI.getMyTweets");
    }
  }

  /* I haven't found a way to filter this on the twitter server
  using params in the get request, but that would be preferred.*/
  async filterByHashtag(tag) {
    if (!tag in this.tags) return "Hashtag not present.";

    let tagList = new Set(this.tags[tag]);
    let tweetList = await this.getMyTweets();
    console.log("tweetList: ", tweetList);
    const filteredTweets = [];
    for (let tweet of tweetList) {
      if ("entities" in tweet && "hashtags" in tweet.entities) {
        for (let { tag } of tweet.entities.hashtags) {
          if (tagList.has(tag)) {
            filteredTweets.push(tweet);
            break;
          }
        }
      }
    }
    return filteredTweets;
  }

}

// async function thing() {
//   const myTwitter = new TwitterAPI();
//   let hundredDaysTweets = await myTwitter.filterByHashtag("hundredDays");
//   console.log(hundredDaysTweets);
// }

module.exports = TwitterAPI;