131 lines
3.7 KiB
TypeScript
131 lines
3.7 KiB
TypeScript
import { Injectable } from '@angular/core';
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import { BehaviorSubject, Observable } from 'rxjs';
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import { ConfigService } from './config.service';
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import { StorageService } from '../core-services/storage.service';
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import { OpenSlidesStatusService } from '../core-services/openslides-status.service';
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/**
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* The login data send by the server.
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*/
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export interface LoginData {
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privacy_policy: string;
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legal_notice: string;
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theme: string;
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}
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const LOGIN_DATA_STORAGE_KEY = 'LoginData';
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/**
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* This service holds the privacy policy, the legal notice and the OpenSlides theme, so
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* they are available even if the user is not logged in.
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*/
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@Injectable({
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providedIn: 'root'
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})
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export class LoginDataService {
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/**
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* Holds the privacy policy
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*/
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private readonly _privacy_policy = new BehaviorSubject<string>('');
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/**
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* Returns an observable for the privacy policy
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*/
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public get privacy_policy(): Observable<string> {
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return this._privacy_policy.asObservable();
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}
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/**
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* Holds the legal notice
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*/
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private readonly _legal_notice = new BehaviorSubject<string>('');
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/**
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* Returns an observable for the legal notice
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*/
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public get legal_notice(): Observable<string> {
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return this._legal_notice.asObservable();
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}
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/**
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* Holds the theme
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*/
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private readonly _theme = new BehaviorSubject<string>('');
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/**
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* Returns an observable for the theme
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*/
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public get theme(): Observable<string> {
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return this._theme.asObservable();
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}
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/**
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* Constructs this service. The config service is needed to update the privacy
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* policy and legal notice, when their config values change.
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* @param configService
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*/
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public constructor(
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private configService: ConfigService,
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private storageService: StorageService,
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private OSStatus: OpenSlidesStatusService
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) {
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this.configService.get<string>('general_event_privacy_policy').subscribe(value => {
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this._privacy_policy.next(value);
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this.storeLoginData();
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});
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this.configService.get<string>('general_event_legal_notice').subscribe(value => {
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this._legal_notice.next(value);
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this.storeLoginData();
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});
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configService.get<string>('openslides_theme').subscribe(value => {
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this._theme.next(value);
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this.storeLoginData();
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});
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this.loadLoginData();
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}
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/**
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* Load the login data from the storage. If it there, set it.
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*/
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private async loadLoginData(): Promise<void> {
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const loginData = await this.storageService.get<LoginData | null>(LOGIN_DATA_STORAGE_KEY);
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if (loginData) {
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this.setLoginData(loginData);
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}
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}
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/**
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* Setter for the login data
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*
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* @param loginData the login data
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*/
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public setLoginData(loginData: LoginData): void {
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this._privacy_policy.next(loginData.privacy_policy);
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this._legal_notice.next(loginData.legal_notice);
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this._theme.next(loginData.theme);
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this.storeLoginData(loginData);
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}
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/**
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* Saves the login data in the storage.
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*
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* @param loginData If given, this data is used. If it's null, the current values
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* from the behaviour subject are taken.
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*/
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private storeLoginData(loginData?: LoginData): void {
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if (!loginData) {
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loginData = {
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privacy_policy: this._privacy_policy.getValue(),
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legal_notice: this._legal_notice.getValue(),
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theme: this._theme.getValue()
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};
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}
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if (!this.OSStatus.isInHistoryMode) {
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this.storageService.set(LOGIN_DATA_STORAGE_KEY, loginData);
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}
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}
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}
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