55 lines
1.5 KiB
Go
55 lines
1.5 KiB
Go
// Copyright (C) 2019 Storj Labs, Inc.
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// See LICENSE for copying information.
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// Package date contains various date-related utilities
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package date
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import "time"
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// MonthBoundary extract month from the provided date and returns its edges
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func MonthBoundary(t time.Time) (time.Time, time.Time) {
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startDate := time.Date(t.Year(), t.Month(), 1, 0, 0, 0, 0, t.Location())
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endDate := time.Date(t.Year(), t.Month()+1, 1, 0, 0, 0, -1, t.Location())
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return startDate, endDate
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}
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// DayBoundary returns start and end of the provided day
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func DayBoundary(t time.Time) (time.Time, time.Time) {
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return time.Date(t.Year(), t.Month(), t.Day(), 0, 0, 0, 0, t.Location()),
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time.Date(t.Year(), t.Month(), t.Day()+1, 0, 0, 0, -1, t.Location())
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}
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// PeriodToTime returns time.Time period in format YYYY-MM from string.
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func PeriodToTime(period string) (_ time.Time, err error) {
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layout := "2006-01"
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shortPeriod := period[0:7]
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result, err := time.Parse(layout, shortPeriod)
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if err != nil {
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return time.Time{}, err
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}
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return result, nil
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}
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// MonthsCountSince calculates the months between now and the createdAtTime time.Time value passed.
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func MonthsCountSince(from time.Time) int {
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now := time.Now().UTC()
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return MonthsBetweenDates(from, now)
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}
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// MonthsBetweenDates calculates amount of months between two dates
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func MonthsBetweenDates(from time.Time, to time.Time) int {
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months := 0
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month := from.Month()
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for from.Before(to) {
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from = from.Add(time.Hour * 24)
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nextMonth := from.Month()
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if nextMonth != month {
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months++
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}
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month = nextMonth
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}
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return months
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}
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