test-starter.component.ts

import { Component, OnInit } from '@angular/core';
import {AuthAccessKeyType, AuthData, BookletData} from "../../app.interfaces";
import {from, Subscription} from "rxjs";
import {concatMap} from "rxjs/operators";
import {Router} from "@angular/router";
import {BackendService} from "../../backend.service";
import {MainDataService} from "../../maindata.service";

@Component({
  templateUrl: './test-starter.component.html',
  styleUrls: ['./test-starter.component.css']
})
export class TestStarterComponent implements OnInit {
  booklets: BookletData[] = [];
  private getBookletDataSubscription: Subscription = null;
  public bookletSelectTitle = 'Bitte wählen';
  problemText = '';

  constructor(
    private router: Router,
    private bs: BackendService,
    private mds: MainDataService
  ) { }

  ngOnInit(): void {
    setTimeout(() => {
      this.bs.getSessionData().subscribe(authDataUntyped => {
        if (typeof authDataUntyped !== 'number') {
          const authData = authDataUntyped as AuthData;
          if (authData) {
            if (authData.token) {
              if (authData.access[AuthAccessKeyType.TEST]) {
                this.booklets = [];
                if (this.getBookletDataSubscription !== null) {
                  this.getBookletDataSubscription.unsubscribe();
                }
                this.getBookletDataSubscription = from(authData.access[AuthAccessKeyType.TEST]).pipe(
                  concatMap(bookletId => {
                    return this.bs.getBookletData(bookletId)
                  })).subscribe(
                    bData => {
                      this.booklets.push(bData)
                    },
                    e => {
                      this.problemText = `Fehler in der Netzwerkverbindung (${e}).`
                    },
                    () => {
                      this.problemText = this.booklets.length > 0 ? '' : 'Für diese Anmeldung wurde kein Test gefunden.'
                    }
                  );
              }
              this.mds.setAuthData(authData);
            } else {
              this.mds.setAuthData();
            }
          } else {
            this.mds.setAuthData();
          }
        }
      })
    });
  }

  startTest(b: BookletData) {
    this.bs.startTest(b.id).subscribe(testId => {
      if (typeof testId === 'number') {
        const errCode = testId as number;
        if (errCode === 423) {
          this.problemText = 'Dieser Test ist gesperrt';
        } else {
          this.problemText = `Problem beim Start (${errCode})`;
        }
      } else {
        this.router.navigate(['/t', testId]);
      }
    });
  }

  resetLogin() {
    this.mds.setAuthData();
    this.router.navigate(['/']);
  }

  ngOnDestroy() {
    if (this.getBookletDataSubscription !== null) {
      this.getBookletDataSubscription.unsubscribe();
    }
  }
}