metube/ui/src/app/downloads.pipe.ts

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2.7 KiB
TypeScript

import { Pipe, PipeTransform } from '@angular/core';
import { SpeedService } from './speed.service';
import { BehaviorSubject } from 'rxjs';
import { throttleTime } from 'rxjs/operators';
@Pipe({
name: 'eta',
standalone: false
})
export class EtaPipe implements PipeTransform {
transform(value: number, ...args: any[]): any {
if (value === null) {
return null;
}
if (value < 60) {
return `${Math.round(value)}s`;
}
if (value < 3600) {
return `${Math.floor(value/60)}m ${Math.round(value%60)}s`;
}
const hours = Math.floor(value/3600)
const minutes = value % 3600
return `${hours}h ${Math.floor(minutes/60)}m ${Math.round(minutes%60)}s`;
}
}
@Pipe({
name: 'speed',
standalone: false,
pure: false // Make the pipe impure so it can handle async updates
})
export class SpeedPipe implements PipeTransform {
private speedSubject = new BehaviorSubject<number>(0);
private formattedSpeed: string = '';
constructor(private speedService: SpeedService) {
// Throttle updates to once per second
this.speedSubject.pipe(
throttleTime(1000)
).subscribe(speed => {
// If speed is invalid or 0, return empty string
if (speed === null || speed === undefined || isNaN(speed) || speed <= 0) {
this.formattedSpeed = '';
return;
}
const k = 1024;
const dm = 2;
const sizes = ['B/s', 'KB/s', 'MB/s', 'GB/s', 'TB/s', 'PB/s', 'EB/s', 'ZB/s', 'YB/s'];
const i = Math.floor(Math.log(speed) / Math.log(k));
this.formattedSpeed = parseFloat((speed / Math.pow(k, i)).toFixed(dm)) + ' ' + sizes[i];
});
}
transform(value: number, ...args: any[]): any {
// If speed is invalid or 0, return empty string
if (value === null || value === undefined || isNaN(value) || value <= 0) {
return '';
}
// Update the speed subject
this.speedSubject.next(value);
// Return the last formatted speed
return this.formattedSpeed;
}
}
@Pipe({
name: 'encodeURIComponent',
standalone: false
})
export class EncodeURIComponent implements PipeTransform {
transform(value: string, ...args: any[]): any {
return encodeURIComponent(value);
}
}
@Pipe({
name: 'fileSize',
standalone: false
})
export class FileSizePipe implements PipeTransform {
transform(value: number): string {
if (isNaN(value) || value === 0) return '0 Bytes';
const units = ['Bytes', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];
const unitIndex = Math.floor(Math.log(value) / Math.log(1000)); // Use 1000 for common units
const unitValue = value / Math.pow(1000, unitIndex);
return `${unitValue.toFixed(2)} ${units[unitIndex]}`;
}
}