96 lines
3.0 KiB
TypeScript
96 lines
3.0 KiB
TypeScript
import { Injectable, SecurityContext, NgZone } from '@angular/core';
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import { DomSanitizer } from '@angular/platform-browser';
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import { TranslateService } from '@ngx-translate/core';
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import { translationNotFoundMessage } from 'app/config/translation.config';
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export type AlertType = 'success' | 'danger' | 'warning' | 'info';
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export interface Alert {
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id?: number;
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type: AlertType;
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message?: string;
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translationKey?: string;
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translationParams?: { [key: string]: unknown };
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timeout?: number;
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toast?: boolean;
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position?: string;
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close?: (alerts: Alert[]) => void;
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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 AlertService {
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timeout = 3000;
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toast = false;
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position = 'top right';
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// unique id for each alert. Starts from 0.
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private alertId = 0;
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private alerts: Alert[] = [];
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constructor(private sanitizer: DomSanitizer, private ngZone: NgZone, private translateService: TranslateService) {}
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clear(): void {
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this.alerts = [];
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}
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get(): Alert[] {
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return this.alerts;
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}
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/**
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* Adds alert to alerts array and returns added alert.
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* @param alert Alert to add. If `timeout`, `toast` or `position` is missing then applying default value.
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* If `translateKey` is available then it's translation else `message` is used for showing.
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* @param extAlerts If missing then adding `alert` to `AlertService` internal array and alerts can be retrieved by `get()`.
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* Else adding `alert` to `extAlerts`.
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* @returns Added alert
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*/
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addAlert(alert: Alert, extAlerts?: Alert[]): Alert {
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alert.id = this.alertId++;
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if (alert.translationKey) {
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const translatedMessage = this.translateService.instant(alert.translationKey, alert.translationParams);
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// if translation key exists
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if (translatedMessage !== `${translationNotFoundMessage}[${alert.translationKey}]`) {
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alert.message = translatedMessage;
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} else if (!alert.message) {
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alert.message = alert.translationKey;
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}
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}
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alert.message = this.sanitizer.sanitize(SecurityContext.HTML, alert.message ?? '') ?? '';
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alert.timeout = alert.timeout ?? this.timeout;
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alert.toast = alert.toast ?? this.toast;
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alert.position = alert.position ?? this.position;
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//alert.close = (alertsArray: Alert[]) => this.closeAlert(alert.id!, alertsArray);
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(extAlerts ?? this.alerts).push(alert);
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if (alert.timeout > 0) {
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// Workaround protractor waiting for setTimeout.
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// Reference https://www.protractortest.org/#/timeouts
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this.ngZone.runOutsideAngular(() => {
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setTimeout(() => {
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this.ngZone.run(() => {
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this.closeAlert(alert.id!, extAlerts ?? this.alerts);
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});
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}, alert.timeout);
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});
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}
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return alert;
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}
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private closeAlert(alertId: number, extAlerts?: Alert[]): void {
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const alerts = extAlerts ?? this.alerts;
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const alertIndex = alerts.map(alert => alert.id).indexOf(alertId);
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// if found alert then remove
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if (alertIndex >= 0) {
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alerts.splice(alertIndex, 1);
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}
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}
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}
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