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import { Injectable } from '@nestjs/common'; |
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import { |
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format as fnsFormat, |
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isWeekend as fnsIsWeekend, |
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getDaysInMonth as fnsGetDaysInMonth, |
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eachDayOfInterval, |
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addDays, |
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getYear |
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} from 'date-fns'; |
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import { MonthDate } from 'src/Application/Common/MonthDate'; |
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import { IDateUtils } from 'src/Application/IDateUtils'; |
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@Injectable() |
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export class DateUtilsAdapter implements IDateUtils { |
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public format(date: Date, format: string): string { |
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return fnsFormat(date, format); |
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} |
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public getDaysInMonth(date: Date): number { |
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return fnsGetDaysInMonth(date); |
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} |
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public isWeekend(date: Date): boolean { |
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return fnsIsWeekend(date); |
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} |
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public isAWorkingDay(date: Date): boolean { |
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if (this.isWeekend(date)) { |
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return false; |
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} |
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const workedFreeDays = this.getWorkedFreeDays(date.getFullYear()); |
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const formatedDate = `${date.getFullYear()}-${date.getMonth()}-${date.getDate()}`; |
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for (const day of workedFreeDays) { |
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const formatedDay = `${day.getFullYear()}-${day.getMonth()}-${day.getDate()}`; |
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if (formatedDate === formatedDay) { |
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return false; |
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} |
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} |
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return true; |
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} |
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public getCurrentDate(): Date { |
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return new Date(); |
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} |
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public getYear(date: Date): number { |
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return getYear(date); |
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} |
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public getMonth(date: Date): MonthDate { |
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return new MonthDate(date.getFullYear(), date.getMonth() + 1); |
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} |
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public getLastDayOfYear(date: Date): Date { |
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return new Date(`${getYear(date)}/12/31`); |
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} |
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public getFirstDayOfYear(date: Date): Date { |
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return new Date(`${getYear(date)}/01/01`); |
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} |
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public getCurrentDateToISOString(): string { |
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return this.getCurrentDate().toISOString(); |
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} |
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public addDaysToDate(date: Date, days: number): Date { |
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return addDays(date, days); |
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} |
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public getWorkedDaysDuringAPeriod(start: Date, end: Date): Date[] { |
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const dates: Date[] = []; |
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const workedFreeDays: Date[] = []; |
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for (let year = start.getFullYear(); year <= end.getFullYear(); year++) { |
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workedFreeDays.push(...this.getWorkedFreeDays(year)); |
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} |
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for (const day of eachDayOfInterval({ start, end })) { |
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if ( |
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this.isWeekend(day) || |
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workedFreeDays.filter(d => d.toISOString() === day.toISOString()) |
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.length > 0 |
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) { |
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continue; |
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} |
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dates.push(day); |
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} |
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return dates; |
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} |
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public getWorkedFreeDays(year: number): Date[] { |
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const fixedDays: Date[] = [ |
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new Date(`${year}-01-01`), // New Year's Day |
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new Date(`${year}-05-01`), // Labour Day |
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new Date(`${year}-05-08`), // Victory in 1945 |
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new Date(`${year}-07-14`), // National Day |
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new Date(`${year}-08-15`), // Assumption |
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new Date(`${year}-11-01`), // All Saints' Day |
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new Date(`${year}-11-11`), // The Armistice |
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new Date(`${year}-12-25`) // Christmas |
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]; |
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const easterDate = this.getEasterDate(year); |
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const easterDays: Date[] = [ |
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addDays(easterDate, 1), // Easter Monday |
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addDays(easterDate, 39) // Ascension |
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]; |
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return [...fixedDays, ...easterDays]; |
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} |
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public getEasterDate(year: number): Date { |
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const a = year % 19; |
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const b = Math.floor(year / 100); |
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const c = year % 100; |
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const d = Math.floor(b / 4); |
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const e = b % 4; |
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const f = Math.floor((b + 8) / 25); |
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const g = Math.floor((b - f + 1) / 3); |
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const h = (19 * a + b - d - g + 15) % 30; |
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const i = Math.floor(c / 4); |
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const k = c % 4; |
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const l = (32 + 2 * e + 2 * i - h - k) % 7; |
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const m = Math.floor((a + 11 * h + 22 * l) / 451); |
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const n0 = h + l + 7 * m + 114; |
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const n = Math.floor(n0 / 31) - 1; |
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const p = (n0 % 31) + 1; |
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return new Date(year, n, p); |
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} |
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public getLeaveDuration( |
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startDate: string, |
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isStartsAllDay: boolean, |
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endDate: string, |
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isEndsAllDay: boolean |
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): number { |
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let duration = this.getWorkedDaysDuringAPeriod( |
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new Date(startDate), |
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new Date(endDate) |
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).length; |
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if (false === isStartsAllDay) { |
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duration -= 0.5; |
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} |
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if (false === isEndsAllDay && duration > 0.5) { |
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duration -= 0.5; |
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} |
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return duration; |
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158
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} |
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159
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} |
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fairnesscoop /
permacoop
