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umami/lib/date.js
2020-08-11 22:24:41 -07:00

116 lines
2.3 KiB
JavaScript

import moment from 'moment-timezone';
import {
addMinutes,
addHours,
addDays,
addMonths,
subHours,
subDays,
startOfHour,
startOfDay,
startOfWeek,
startOfMonth,
startOfYear,
endOfHour,
endOfDay,
endOfWeek,
endOfMonth,
endOfYear,
differenceInHours,
differenceInCalendarDays,
differenceInMonths,
} 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(/^(?<num>[0-9]+)(?<unit>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,
};
}
}
const dateFuncs = {
hour: [differenceInHours, addHours, startOfHour],
day: [differenceInCalendarDays, addDays, startOfDay],
month: [differenceInMonths, addMonths, startOfMonth],
};
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 => {
return getLocalTime(new Date(e.t)).getTime() === normalize(new Date(t)).getTime();
});
return x?.y || 0;
}
for (let i = 0; i < n; i++) {
const t = add(startDate, i);
const y = findData(t);
arr.push({ t, y });
}
return arr;
}