git.iko.soy/opencode-android
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opencode-android/app/src/main/java/soy/iko/opencode/ui/components/TimeFormat.kt
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1package soy.iko.opencode.ui.components
3import androidx.compose.runtime.Composable
4import androidx.compose.runtime.LaunchedEffect
5import androidx.compose.runtime.getValue
6import androidx.compose.runtime.mutableLongStateOf
7import androidx.compose.runtime.remember
8import androidx.compose.runtime.setValue
9import kotlinx.coroutines.delay
10import java.util.concurrent.TimeUnit
12/** Formats an epoch-millis timestamp as a short relative string (e.g. "3m", "2h", "5d"). */
13fun relativeTime(epochMillis: Long?): String {
14 if (epochMillis == null || epochMillis <= 0) return ""
15 val diff = System.currentTimeMillis() - epochMillis
16 if (diff < 0) return "now"
17 val minutes = TimeUnit.MILLISECONDS.toMinutes(diff)
18 if (minutes < 1) return "now"
19 if (minutes < 60) return "${minutes}m"
20 val hours = TimeUnit.MILLISECONDS.toHours(diff)
21 if (hours < 24) return "${hours}h"
22 val days = TimeUnit.MILLISECONDS.toDays(diff)
23 if (days < 7) return "${days}d"
24 val weeks = days / 7
25 if (weeks < 5) return "${weeks}w"
26 val months = days / 30
27 if (months < 12) return "${months}mo"
28 return "${days / 365}y"
31/**
32 * Returns a relative-time string for [epochMillis] that auto-refreshes so the label
33 * doesn't go stale (e.g. "3m" → "4m" → "5m" while the screen is visible). Re-evaluates
34 * every [intervalMs] (default 30 s — coarse enough for battery, fine enough for the
35 * smallest unit we show, which is minutes).
36 */
37@Composable
38fun rememberRelativeTime(epochMillis: Long?, intervalMs: Long = 30_000L): String {
39 // Recompose trigger: incrementing this state causes the composable to re-execute
40 // on each interval, re-evaluating relativeTime() so the label stays fresh.
41 var tick by remember { mutableLongStateOf(0L) }
42 LaunchedEffect(epochMillis) {
43 while (true) {
44 delay(intervalMs)
45 tick++
46 }
47 }
48 // Read tick so Compose tracks it as a dependency and recomposes when it changes.
49 @Suppress("UNUSED_EXPRESSION") tick
50 return relativeTime(epochMillis)