import moment from 'moment-timezone'; import { addMinutes, addHours, addDays, addMonths, addYears, subHours, subDays, startOfHour, startOfDay, startOfWeek, startOfMonth, startOfYear, endOfHour, endOfDay, endOfWeek, endOfMonth, endOfYear, differenceInHours, differenceInCalendarDays, differenceInCalendarMonths, differenceInCalendarYears, } from 'date-fns'; export function getTimezone() { return moment.tz.guess(); } export function getLocalTime(t) { return addMinutes(new Date(t), new Date().getTimezoneOffset()); } export function getDateRange(value) { const now = new Date(); const { num, unit } = value.match(/^(?[0-9]+)(?hour|day|week|month|year)$/).groups; if (+num === 1) { switch (unit) { case 'day': return { startDate: startOfDay(now), endDate: endOfDay(now), unit: 'hour', value, }; case 'week': return { startDate: startOfWeek(now), endDate: endOfWeek(now), unit: 'day', value, }; case 'month': return { startDate: startOfMonth(now), endDate: endOfMonth(now), unit: 'day', value, }; case 'year': return { startDate: startOfYear(now), endDate: endOfYear(now), unit: 'month', value, }; } } switch (unit) { case 'day': return { startDate: subDays(startOfDay(now), num - 1), endDate: endOfDay(now), unit, value, }; case 'hour': return { startDate: subHours(startOfHour(now), num - 1), endDate: endOfHour(now), unit, value, }; } } export function getDateRangeValues(startDate, endDate) { let unit = 'year'; if (differenceInHours(endDate, startDate) <= 48) { unit = 'hour'; } else if (differenceInCalendarDays(endDate, startDate) <= 90) { unit = 'day'; } else if (differenceInCalendarMonths(endDate, startDate) <= 24) { unit = 'month'; } return { startDate: startOfDay(startDate), endDate: endOfDay(endDate), unit }; } const dateFuncs = { hour: [differenceInHours, addHours, startOfHour], day: [differenceInCalendarDays, addDays, startOfDay], month: [differenceInCalendarMonths, addMonths, startOfMonth], year: [differenceInCalendarYears, addYears, startOfYear], }; export function getDateArray(data, startDate, endDate, unit) { const arr = []; const [diff, add, normalize] = dateFuncs[unit]; const n = diff(endDate, startDate) + 1; function findData(t) { const x = data.find(e => { if (unit === 'hour') { return normalize(new Date(e.t)).getTime() === t.getTime(); } const [year, month, day] = e.t.split('-'); return normalize(new Date(year, month - 1, day)).getTime() === t.getTime(); }); return x?.y || 0; } for (let i = 0; i < n; i++) { const t = normalize(add(startDate, i)); const y = findData(t); arr.push({ ...data[i], t, y }); } return arr; } export function getDateLength(startDate, endDate, unit) { const [diff] = dateFuncs[unit]; return diff(endDate, startDate) + 1; }