getting bearer token from twitter oauth2.0

graphql twitter bearer token

import { ResolverMap } from "../../types/graphql-utils";
import axios from "axios";
import dotenv from "dotenv";
const qs = require("qs");
dotenv.config();

export const resolvers: ResolverMap = {
  Query: {
    twitterLogin: async (_: any): Promise<any> => {
      let bearerToken: string = "";
      try {
        const data = { grant_type: "client_credentials" };
        const firstRequest = await axios({
          method: "post",
          url: "https://api.twitter.com/oauth2/token",
          headers: {
            Authorization:
              "Basic " +
              Buffer.from(
                `${process.env.TWITTER_API_KEY}:${process.env.TWITTER_API_SECRET}`
              ).toString("base64"),
            "Content-Type": "application/x-www-form-urlencoded;charset=UTF-8"
          },
          data: qs.stringify(data)
        });
        const {
          status,
          data: { token_type, access_token }
        } = firstRequest;
        if (status === 200 && token_type === "bearer") {
          console.log(token_type);
          bearerToken = access_token;
          console.log(bearerToken);
          const secondRequest = await axios({
            method: "get",
            url:
              "https://api.twitter.com/1.1/statuses/user_timeline.json?count=100&screen_name=twitterapi",
            headers: {
              Authorization: `Bearer ${bearerToken}`
            }
          });

          console.log(
            "this is the second response ?>>>>>>>>>>>",
            secondRequest
          );
        } else {
          throw new Error("Authentication Failed");
        }
        return { status: "200" };
      } catch (err) {
        console.log(err);
      }
    }
  }
};