dnote/pkg/server/views/time.go
2025-09-28 21:09:22 -07:00

121 lines
2.3 KiB
Go

/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
*
* This file is part of Dnote.
*
* Dnote is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Dnote is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Dnote. If not, see <https://www.gnu.org/licenses/>.
*/
package views
import (
"fmt"
"time"
)
type timeDiff struct {
text string
tense string
}
func pluralize(singular string, count int) string {
var noun string
if count == 1 {
noun = singular
} else {
noun = singular + "s"
}
return noun
}
func abs(num int64) int64 {
if num < 0 {
return -num
}
return num
}
var (
DAY = 24 * time.Hour.Milliseconds()
WEEK = 7 * DAY
)
func getTimeDiffText(interval int64, noun string) string {
return fmt.Sprintf("%d %s", interval, pluralize(noun, int(interval)))
}
func relativeTimeDiff(t1, t2 time.Time) timeDiff {
diff := t1.Sub(t2)
ts := abs(diff.Milliseconds())
var tense string
if diff > 0 {
tense = "past"
} else {
tense = "future"
}
interval := ts / (52 * WEEK)
if interval >= 1 {
return timeDiff{
text: getTimeDiffText(interval, "year"),
tense: tense,
}
}
interval = ts / (4 * WEEK)
if interval >= 1 {
return timeDiff{
text: getTimeDiffText(interval, "month"),
tense: tense,
}
}
interval = ts / WEEK
if interval >= 1 {
return timeDiff{
text: getTimeDiffText(interval, "week"),
tense: tense,
}
}
interval = ts / DAY
if interval >= 1 {
return timeDiff{
text: getTimeDiffText(interval, "day"),
tense: tense,
}
}
interval = ts / time.Hour.Milliseconds()
if interval >= 1 {
return timeDiff{
text: getTimeDiffText(interval, "hour"),
tense: tense,
}
}
interval = ts / time.Minute.Milliseconds()
if interval >= 1 {
return timeDiff{
text: getTimeDiffText(interval, "minute"),
tense: tense,
}
}
return timeDiff{
text: "Just now",
}
}