HOSN-app/app/src/pages/profile/profile.ts

import { Component } from "@angular/core";
import {
  IonicPage,
  NavController,
  NavParams,
  InfiniteScroll
} from "ionic-angular";
import { TwitterApiProvider } from "../../providers/twitter-api/twitter-api";
import { P2pStorageIpfsProvider } from "../../providers/p2p-storage-ipfs/p2p-storage-ipfs";
import { P2pDatabaseGunProvider } from "../../providers/p2p-database-gun/p2p-database-gun";

/**
 * Generated class for the ProfilePage page.
 *
 * See https://ionicframework.com/docs/components/#navigation for more info on
 * Ionic pages and navigation.
 */

@IonicPage()
@Component({
  selector: "page-profile",
  templateUrl: "profile.html"
})
export class ProfilePage {
  userId: string;
  user: any = [];
  tweets: any[];

  constructor(
    public navCtrl: NavController,
    public navParams: NavParams,
    private twitter: TwitterApiProvider,
    private ipfs: P2pStorageIpfsProvider,
    private gun: P2pDatabaseGunProvider
  ) {}

  ionViewDidLoad() {
    this.userId = this.navParams.get("userId");

    this.twitter.fetchUser(this.userId).then(res => (this.user = res));

    this.twitter
      .fetchUserTimeline(this.userId)
      .then(res => (this.tweets = res));

    this.checkP2pTweets("username");
  }

  doRefresh(refresher) {
    this.twitter.fetchUserTimeline(this.userId).then(res => {
      this.tweets = res;
      refresher.complete();
    });
  }

  loadMore(infiniteScroll: InfiniteScroll) {
    this.twitter
      .fetchUserTimelineSince(
        this.userId,
        this.tweets[this.tweets.length - 1].id
      )
      .then(res => {
        this.tweets = this.tweets.concat(res);
        infiniteScroll.complete();
      });
  }

  private async checkP2pTweets(userId) {
    const lastTweetHash = await this.gun.getLastTweetFromUser(userId);
    const res = await this.ipfs.fetchTweet(lastTweetHash);
  }
}