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103 lines
2.1 KiB
103 lines
2.1 KiB
package service
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import (
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"fmt"
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"math"
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"time"
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)
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func NatualTime(base, value time.Time) string {
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if value.Before(base) {
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return pastNaturalTime(base, value)
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} else {
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return futureNaturalTime(base, value)
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}
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}
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func futureNaturalTime(base, value time.Time) string {
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dur := value.Sub(base)
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if dur.Seconds() <= 60 {
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return "in a few seconds"
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}
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if dur.Minutes() < 5 {
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return "in a few minutes"
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}
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if dur.Minutes() < 60 {
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return fmt.Sprintf("in %.0f minutes", dur.Minutes())
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}
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if dur.Hours() < 24 {
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return fmt.Sprintf("in %.0f hours", dur.Hours())
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}
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days := math.Floor(dur.Hours() / 24)
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if days == 1 {
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return "tomorrow"
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}
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if days == 2 {
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return "day after tomorrow"
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}
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if days < 30 {
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return fmt.Sprintf("in %.0f days", days)
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}
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months := math.Floor(days / 30)
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if months == 1 {
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return "next month"
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}
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if months < 12 {
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return fmt.Sprintf("in %.0f months", months)
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}
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years := math.Floor(months / 12)
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if years == 1 {
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return "next year"
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}
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return fmt.Sprintf("in %.0f years", years)
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}
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func pastNaturalTime(base, value time.Time) string {
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dur := base.Sub(value)
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if dur.Seconds() <= 60 {
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return "a few seconds ago"
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}
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if dur.Minutes() < 5 {
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return "a few minutes ago"
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}
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if dur.Minutes() < 60 {
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return fmt.Sprintf("%.0f minutes ago", dur.Minutes())
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}
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days := math.Floor(dur.Hours() / 24)
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startBase := time.Date(base.Year(), base.Month(), base.Day(), 0, 0, 0, 0, time.UTC)
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yesterday := startBase.Add(-24 * time.Hour)
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dayBeforeYesterday := yesterday.Add(-24 * time.Hour)
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//fmt.Println(value, days, startBase, yesterday, dayBeforeYesterday)
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if value.After(startBase) {
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return fmt.Sprintf("%.0f hours ago", dur.Hours())
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}
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if value.After(yesterday) {
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return "yesterday"
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}
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if value.After(dayBeforeYesterday) {
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return "day before yesterday"
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}
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if days < 30 {
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return fmt.Sprintf("%.0f days ago", days)
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}
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months := math.Floor(days / 30)
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if months == 1 {
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return "last month"
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}
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if months < 12 {
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return fmt.Sprintf("%.0f months ago", months)
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}
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years := math.Floor(months / 12)
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if years == 1 {
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return "last year"
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}
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return fmt.Sprintf("%.0f years ago", years)
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}
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