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import { Component, Input, OnChanges, OnDestroy, OnInit, inject } from '@angular/core';
import { interval, Subscription } from 'rxjs';
import { TwinpadApiService } from '../../services/twinpad-api.service';
@Component({
selector: 'app-countdown',
imports: [],
templateUrl: './countdown.component.html',
styleUrl: './countdown.component.scss'
})
export class CountdownComponent implements OnInit, OnChanges, OnDestroy {
private twinpadApiService = inject(TwinpadApiService);
@Input() targetTimestamp: number | null = null;
@Input() targetSignalId: string | null = null;
@Input() compactMode: boolean = false;
days: number | null = null;
hours: number | null = null;
minutes: number | null = null;
seconds: number | null = null;
isPositiveTime = false;
targetDate: Date | null = null;
localTimeZone: string;
localMonth: string;
UTCMonth: string;
private subscription: Subscription | null = null;
signalSubscription: Subscription;
ngOnInit() {
Iif (this.targetSignalId !== null && this.targetSignalId !== "") {
this.twinpadApiService.getSignal(this.targetSignalId).subscribe({
next: targetSignal => {
if (targetSignal.data_type !== "epoch") {
this.targetSignalId = null;
return;
}
this.signalSubscription = this.twinpadApiService.callPeriodically(() => {
return this.twinpadApiService.getSignalValue(this.targetSignalId as string);
}, 5000).subscribe({
next: countDownValue => {
let valueChanged: boolean = false;
if (typeof countDownValue.value === "string") {
if (this.targetTimestamp !== null) {
valueChanged = true;
}
this.targetTimestamp = null;
}
else {
if (this.targetTimestamp !== (countDownValue.value ?? null)) {
valueChanged = true;
}
this.targetTimestamp = countDownValue.value ?? null;
}
if (valueChanged) {
this.updateTarget();
}
}
});
}
});
}
this.updateTarget();
this.updateTime();
this.subscription = interval(100).subscribe(() => this.updateTime());
this.localTimeZone = Intl.DateTimeFormat().resolvedOptions().timeZone;
}
ngOnChanges() {
this.updateTarget();
this.updateTime();
}
ngOnDestroy() {
this.subscription?.unsubscribe();
this.signalSubscription.unsubscribe();
}
private updateTime() {
const now = Math.floor(Date.now() / 1000);
Eif (this.targetTimestamp !== null) {
let diff = this.targetTimestamp - now;
this.isPositiveTime = diff < 0;
Iif (this.isPositiveTime) {
diff = -diff;
}
this.days = Math.floor(diff / 86400);
this.hours = Math.floor((diff % 86400) / 3600);
this.minutes = Math.floor((diff % 3600) / 60);
this.seconds = Math.floor(diff % 60);
}
else {
this.days = null;
this.hours = null;
this.minutes = null;
this.seconds = null;
}
}
formatNumber(value: number | null): string {
Iif (value === null) {
return '--';
}
return value < 10 ? '0' + value : value.toString();
}
updateTarget() {
Eif (this.targetTimestamp !== null) {
this.targetDate = new Date(this.targetTimestamp * 1000);
this.localMonth = this.targetDate.toLocaleString('en-US', { month: 'long' });
this.UTCMonth = this.targetDate.toLocaleString('en-US', { month: 'long', timeZone: 'UTC' });
}
else {
this.targetDate = null;
}
}
}
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