HOSN-app/app/src/providers/twitter-api/twitter-api.ts

import { Injectable } from '@angular/core';
import { HttpClient, HttpHeaders } from '@angular/common/http';
import { Storage } from '@ionic/storage';
import Twit from 'twit';


@Injectable()
export class TwitterApiProvider {
  consumer_key: string = 'UxZkbKotkr8Uc6seupnaZ1kDE';
  consumer_secret: string = 'fEAas8iugR60FOEXsFG0iajq6oyfIIXRBVMlTgWxBd1stWIKHq';
  access_token_key: string;
  access_token_secret: string;
  client;

  constructor(public http: HttpClient, private storage: Storage) {
    console.log('Hello TwitterApiProvider Provider');

    Promise.all([this.storage.get('accessTokenKey'), this.storage.get('accessTokenSecret')]).then(values => {
      this.access_token_key = values[0];
      this.access_token_secret = values[1];
      this.initApi();
    });
  }

  private initApi() {
    this.client = new Twit({
      consumer_key: this.consumer_key,
      consumer_secret: this.consumer_secret,
      access_token: this.access_token_key,
      access_token_secret: this.access_token_secret,
      timeout_ms: 60 * 1000,  // optional HTTP request timeout to apply to all requests.
    })
  }

  public fetchHomeFeed() {
    return this.client.get('statuses/home_timeline')
      .then(res => {
        return res;
      })
      .catch(err => {
        console.log(err);
      });
  }
}