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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 | 7x 7x 7x 7x 5x 5x 5x 5x 5x 7x 10x 10x 10x 10x 30x 30x 7x 65x 65x 2x 63x 63x 7x 69x 69x 69x 69x 7x 207x 207x 7x | import { Injectable } from '@angular/core';
import * as _ from 'lodash';
@Injectable({
providedIn: 'root'
})
export class TimeDiffService {
constructor() {}
calculateDuration(startDate: Date, endDate: Date): string {
const startTime = +startDate;
const endTime = +endDate;
const duration = this.getDuration(Math.abs(startTime - endTime));
Iif (startTime > endTime) {
return '-' + duration;
}
return duration;
}
private getDuration(ms: number): string {
const date = new Date(ms);
const h = date.getUTCHours();
const m = date.getUTCMinutes();
const d = Math.floor(ms / (24 * 3600 * 1000));
const format = (n, s) => (n ? n + s : n);
return [format(d, 'd'), format(h, 'h'), format(m, 'm')].filter((x) => x).join(' ');
}
calculateDate(date: Date, duration: string, reverse?: boolean): Date {
const time = +date;
if (_.isNaN(time)) {
return;
}
const diff = this.getDurationMs(duration) * (reverse ? -1 : 1);
return new Date(time + diff);
}
private getDurationMs(duration: string): number {
const d = this.getNumbersFromString(duration, 'd');
const h = this.getNumbersFromString(duration, 'h');
const m = this.getNumbersFromString(duration, 'm');
return ((d * 24 + h) * 60 + m) * 60000;
}
private getNumbersFromString(duration, prefix): number {
const match = duration.match(new RegExp(`[0-9 ]+${prefix}`, 'i'));
return match ? parseInt(match, 10) : 0;
}
}
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