insight-previous-tcr/src/components/latest-transactions/latest-transactions.ts

A blockchain explorer for Bitcore

import { HttpClient } from "@angular/common/http";
import { Component, Input, NgZone, OnChanges } from "@angular/core";
import { ApiProvider } from "../../providers/api/api";
import { CurrencyProvider } from "../../providers/currency/currency";
import { RedirProvider } from "../../providers/redir/redir";

@Component({
  selector: 'latest-transactions',
  templateUrl: 'latest-transactions.html'
})
export class LatestTransactionsComponent implements OnChanges {
  @Input()
  public refreshSeconds = 10;

  private timer: any;
  private loading = true;
  private transactions = [];

  constructor(
    public currency: CurrencyProvider,
    public redirProvider: RedirProvider,
    private ngZone: NgZone,
    private httpClient: HttpClient,
    private apiProvider: ApiProvider
  ) {
    this.loadTransactions();
  }

  public ngOnChanges(): void {
    if (this.timer) {
      clearInterval(this.timer);
    }

    this.ngZone.runOutsideAngular(() => {
      this.timer = setInterval(() => {
        this.ngZone.run(() => {
          this.loadTransactions.call(this);
        });
      }, 1000 * this.refreshSeconds);
    });
  }

  private loadTransactions(): void {
    const url = `${this.apiProvider.getUrl()}/txs`;

    this.httpClient.get(url).subscribe(
      (data: any) => {
        this.transactions = JSON.parse(data._body);
        this.loading = false;
      },
      () => {
        this.loading = false;
      }
    );
  }

  public goToTx(txId: string): void {
    this.redirProvider.redir('transaction', {
      txId,
      chain: this.apiProvider.networkSettings.selectedNetwork.chain,
      network: this.apiProvider.networkSettings.selectedNetwork.network
    });
  }
}