user.service.ts 4.56 KB
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import { Injectable } from '@angular/core';
import { Router, ActivatedRoute } from '@angular/router';
import { HttpClient, HttpErrorResponse } from '@angular/common/http';
import { Observable } from 'rxjs/Observable';
import 'rxjs/add/operator/map';
import 'rxjs/add/operator/catch';
import 'rxjs/add/observable/of';

import { CookieService } from 'ngx-cookie-service';
import { MatTableDataSource } from '@angular/material';

import { SnackBarService } from './snackbar.service';

interface Group {
  name: string;
}

interface SSHKey {
  name: string;
  key: string;
}

interface Service {
  name: string;
}

interface User {
  sub: string;
  email: string;
  username: string;
  groups: Group[];
  ssh_keys: SSHKey[];
}

interface State {
  services: Service[];
}

interface StateAPI {
  state: State;
  logged_in: boolean;
}

interface StateAPIUser {
  state: State;
  logged_in: boolean;
  user: User;
}


@Injectable()
export class UserService {
  public loggedIn = false;
  public state: State;
  public user: User;
  public sshKeyData: MatTableDataSource<any>;
  public userInfoData: MatTableDataSource<any>;


  constructor(
    public router: Router,
    public activatedRoute: ActivatedRoute,
    public cookieService: CookieService,
    public http: HttpClient,
    public snackBar: SnackBarService,
  ) {
    this.errorStatus().subscribe(
      (operational) => {
        if (operational) {
          this.update();
        }
      }
    );
  }

  public logState() {
    console.log(
      'loggedIn', this.loggedIn,
      'state', this.state,
      'user', this.user,
      'sshKeyData', this.sshKeyData,
      'userInfoData', this.userInfoData,
    );
  }

  public errorStatus(): Observable<boolean> {
    return this.activatedRoute.params.map(
      (params) => {
        console.log('params', params);
        if ('error' in params) {
          this.snackBar.open('Backend error: ' + params['error']);
          return false;
        } else {
          return true;
        }
      }
    );
  }

  public backendOperational(): Observable<boolean> {
    return this.http.get('/backend/api/operational').map(
      (data) => {
        return data['operational'];
      },
      (err) => {
        return false;
      }
    );
  }

  public login() {
    this.backendOperational().subscribe(
      (operational: boolean) => {
        console.log(operational);
        if (operational) {
          window.location.href = 'https://hdf-portal.data.kit.edu/backend/auth';
        } else {
          this.snackBar.open('The backend is currently not operational');
        }
      }
    );
  }

  public update() {
    this.http
      .get('/backend/api/state/')
      .subscribe(
        (data: StateAPIUser) => {
          if (!this.loggedIn && data.logged_in) {
            this.snackBar.open('Logged in');
          }

          this.loggedIn = data.logged_in;
          this.state = data.state;
          this.user = data.user;


          if (this.user) {
            // build sshKeyData
            if ('ssh_keys' in this.user) {
              this.sshKeyData = new MatTableDataSource(this.user.ssh_keys);
            } else {
              this.sshKeyData = null;
            }

            // build userInfoData
            const userInfoList = [];
            for (const key of ['sub', 'email']) {
              userInfoList.push({name: key, info: this.user[key]});
            }
            this.userInfoData = new MatTableDataSource(userInfoList);

          } else {
            this.sshKeyData = null;
            this.userInfoData = null;
          }

          this.logState();
        },
        (err: HttpErrorResponse) => {
          console.log('Error', err);
          this.snackBar.open('Error receiving data from the server');
        }
      );
  }

  public logout() {
    this.http.get('/backend/auth_logout/').subscribe(
      data => {
        this.update();
        this.router.navigate(['']);
      }
    );
  }

  public addSshKey(key: Object) {
    const body = {
      'type': 'add',
      'key': key,
    };
    return this.http.post('/backend/api/sshkey/', body).subscribe(
      data => {
        this.update();
      },
      (err) => {
        this.snackBar.open('Error uploading key');
        console.log(err);
        return Observable.of('Error uploading key');
      }
    );
  }

  public removeSshKey(name: string) {
    const body = {
      'type': 'remove',
      'name': name,
    };
    return this.http.post('/backend/api/sshkey/', body).subscribe(
      (data) => {
        this.update();
      },
      (err) => {
        this.snackBar.open('Error deleting key');
        console.log(err);
      }
    );
  }
}