align time format with iOS app, use kotlix-datetime only (#340)

apps/android/app/src/main/java/chat/simplex/app/model/ChatModel.kt

@@ -1,14 +1,13 @@
 package chat.simplex.app.model
 
-import android.annotation.SuppressLint
 import android.net.Uri
 import androidx.compose.runtime.mutableStateListOf
 import androidx.compose.runtime.mutableStateOf
 import chat.simplex.app.SimplexApp
 import kotlinx.datetime.*
+import kotlinx.datetime.TimeZone
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
-import java.time.format.DateTimeFormatter
 
 class ChatModel(val controller: ChatController, val alertManager: SimplexApp.AlertManager) {
   var currentUser = mutableStateOf<User?>(null)
@@ -495,13 +494,14 @@ class CIMeta (
   }
 }
 
-// TODO use old api?
+fun getTimestampText(t: Instant): String {
-// TODO date for older timestamps
+  val tz = TimeZone.currentSystemDefault()
-@SuppressLint("NewApi")
+  val now: LocalDateTime = Clock.System.now().toLocalDateTime(tz)
-fun getTimestampText(d: Instant): String {
+  val time: LocalDateTime = t.toLocalDateTime(tz)
-  val dt = d.toLocalDateTime(TimeZone.currentSystemDefault()).toJavaLocalDateTime()
+  val recent = now.date == time.date ||
-  val formatter = DateTimeFormatter.ofPattern("HH:mm")
+      (now.date.minus(time.date).days == 1 && now.hour < 12 && time.hour >= 18 )
-  return dt.format(formatter)
+  return if (recent) String.format("%02d:%02d", time.hour, time.minute)
+                else String.format("%02d/%02d", time.dayOfMonth, time.monthNumber)
 }
 
 @Serializable

apps/android/app/src/main/java/chat/simplex/app/views/chatlist/ChatPreviewView.kt

@@ -1,6 +1,5 @@
 package chat.simplex.app.views.chatlist
 
-import android.icu.text.SimpleDateFormat
 import androidx.compose.foundation.*
 import androidx.compose.foundation.layout.*
 import androidx.compose.foundation.shape.CircleShape
@@ -14,31 +13,9 @@ import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
-import chat.simplex.app.model.Chat
+import chat.simplex.app.model.*
-import chat.simplex.app.model.ChatInfo
 import chat.simplex.app.ui.theme.HighOrLowlight
 import chat.simplex.app.ui.theme.SimpleXTheme
-import kotlinx.datetime.Instant
-import kotlinx.datetime.toJavaInstant
-import java.time.LocalDateTime
-import java.util.*
-import java.time.Instant as JavaInstant
-
-fun getDisplayTime(t: Instant) : String {
-  val timeFormatter = SimpleDateFormat("HH:mm", Locale.getDefault())
-  val dateFormatter = SimpleDateFormat("dd/MM/y", Locale.getDefault())
-  val timeProvided: JavaInstant = t.toJavaInstant()
-  val tz = TimeZone.getDefault()
-  val dateProvided = LocalDateTime.ofInstant(timeProvided, tz.toZoneId()).toLocalDate()
-  val today = LocalDateTime.now().atZone(tz.toZoneId()).toLocalDate()
-  val yesterday = today.minusDays(1)
-
-  return when (dateProvided) {
-    today -> timeFormatter.format(Date.from(timeProvided))
-    yesterday -> "yesterday"
-    else -> dateFormatter.format(Date.from(timeProvided))
-  }
-}
 
 @Composable
 fun ChatPreviewView(chat: Chat, goToChat: () -> Unit) {
@@ -70,9 +47,9 @@ fun ChatPreviewView(chat: Chat, goToChat: () -> Unit) {
           Text(chat.chatInfo.chatViewName, fontWeight = FontWeight.Bold)
           (
             if (chat.chatItems.count() > 0) {
-              Text(getDisplayTime(chat.chatItems.last().meta.itemTs), color = HighOrLowlight)
+              Text(getTimestampText(chat.chatItems.last().meta.itemTs), color = HighOrLowlight)
             }
-            else Text(getDisplayTime(chat.chatInfo.createdAt), color = HighOrLowlight)
+            else Text(getTimestampText(chat.chatInfo.createdAt), color = HighOrLowlight)
           )
         }
         if (chat.chatItems.count() > 0) {