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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; } } |