Adds date separators on chats

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/note/TimeAgoFormatter.kt

@@ -29,8 +29,8 @@ import java.text.SimpleDateFormat
 import java.util.Locale
 
 var locale = Locale.getDefault()
-var yearFormatter = SimpleDateFormat(" • MMM dd, yyyy", locale)
+var yearFormatter = SimpleDateFormat("MMM dd, yyyy", locale)
-var monthFormatter = SimpleDateFormat(" • MMM dd", locale)
+var monthFormatter = SimpleDateFormat("MMM dd", locale)
 
 fun timeAgo(
     time: Long?,
@@ -46,20 +46,20 @@ fun timeAgo(
 
         if (locale != Locale.getDefault()) {
             locale = Locale.getDefault()
-            yearFormatter = SimpleDateFormat(" • MMM dd, yyyy", locale)
+            yearFormatter = SimpleDateFormat("MMM dd, yyyy", locale)
-            monthFormatter = SimpleDateFormat(" • MMM dd", locale)
+            monthFormatter = SimpleDateFormat("MMM dd", locale)
         }
 
-        yearFormatter.format(time * 1000)
+        " • " + yearFormatter.format(time * 1000)
     } else if (timeDifference > TimeUtils.ONE_MONTH) {
         // Dec 12
         if (locale != Locale.getDefault()) {
             locale = Locale.getDefault()
-            yearFormatter = SimpleDateFormat(" • MMM dd, yyyy", locale)
+            yearFormatter = SimpleDateFormat("MMM dd, yyyy", locale)
-            monthFormatter = SimpleDateFormat(" • MMM dd", locale)
+            monthFormatter = SimpleDateFormat("MMM dd", locale)
         }
 
-        monthFormatter.format(time * 1000)
+        " • " + monthFormatter.format(time * 1000)
     } else if (timeDifference > TimeUtils.ONE_DAY) {
         // 2 days
         " • " + (timeDifference / TimeUtils.ONE_DAY).toString() + stringRes(context, R.string.d)
@@ -112,6 +112,40 @@ fun timeAgoNoDot(
     }
 }
 
+fun dateFormatter(
+    time: Long?,
+    never: String,
+    today: String,
+): String {
+    if (time == null) return " "
+    if (time == 0L) return " $never"
+
+    val timeDifference = TimeUtils.now() - time
+
+    return if (timeDifference > TimeUtils.ONE_YEAR) {
+        // Dec 12, 2022
+
+        if (locale != Locale.getDefault()) {
+            locale = Locale.getDefault()
+            yearFormatter = SimpleDateFormat("MMM dd, yyyy", locale)
+            monthFormatter = SimpleDateFormat("MMM dd", locale)
+        }
+
+        yearFormatter.format(time * 1000)
+    } else if (timeDifference > TimeUtils.ONE_DAY) {
+        // Dec 12
+        if (locale != Locale.getDefault()) {
+            locale = Locale.getDefault()
+            yearFormatter = SimpleDateFormat("MMM dd, yyyy", locale)
+            monthFormatter = SimpleDateFormat("MMM dd", locale)
+        }
+
+        monthFormatter.format(time * 1000)
+    } else {
+        today
+    }
+}
+
 fun timeAgoShort(
     mills: Long?,
     stringForNow: String,

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/chatrooms/ChatroomFeedView.kt

@@ -36,6 +36,7 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.font.FontWeight
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
+import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.model.Note
 import com.vitorpamplona.amethyst.ui.actions.CrossfadeIfEnabled
 import com.vitorpamplona.amethyst.ui.feeds.FeedEmpty
@@ -44,12 +45,16 @@ import com.vitorpamplona.amethyst.ui.feeds.FeedState
 import com.vitorpamplona.amethyst.ui.feeds.LoadingFeed
 import com.vitorpamplona.amethyst.ui.feeds.RefresheableBox
 import com.vitorpamplona.amethyst.ui.navigation.INav
+import com.vitorpamplona.amethyst.ui.note.dateFormatter
 import com.vitorpamplona.amethyst.ui.screen.FeedViewModel
 import com.vitorpamplona.amethyst.ui.screen.SaveableFeedState
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
+import com.vitorpamplona.amethyst.ui.stringRes
+import com.vitorpamplona.amethyst.ui.theme.DividerThickness
 import com.vitorpamplona.amethyst.ui.theme.FeedPadding
 import com.vitorpamplona.amethyst.ui.theme.Font14SP
 import com.vitorpamplona.amethyst.ui.theme.HalfPadding
+import com.vitorpamplona.amethyst.ui.theme.StdPadding
 import com.vitorpamplona.quartz.events.DraftEvent
 
 @Composable
@@ -145,7 +150,7 @@ fun ChatroomFeedLoaded(
         reverseLayout = true,
         state = listState,
     ) {
-        itemsIndexed(items.list, key = { _, item -> item.idHex }) { _, item ->
+        itemsIndexed(items.list, key = { _, item -> item.idHex }) { index, item ->
             val noteEvent = item.event
             if (avoidDraft == null || noteEvent !is DraftEvent || noteEvent.dTag() != avoidDraft) {
                 ChatroomMessageCompose(
@@ -156,35 +161,59 @@ fun ChatroomFeedLoaded(
                     onWantsToReply = onWantsToReply,
                     onWantsToEditDraft = onWantsToEditDraft,
                 )
+
+                NewDateSubject(items.list.getOrNull(index + 1), item)
             }
-            NewSubject(item)
         }
     }
 }
 
 @Composable
-fun NewSubject(note: Note) {
+fun NewDateSubject(
+    previous: Note?,
+    note: Note,
+) {
+    if (previous == null) return
+
+    val never = stringRes(R.string.never)
+    val today = stringRes(R.string.today)
+
+    val prevDate = remember(previous) { dateFormatter(previous.event?.createdAt(), never, today) }
+    val date = remember(note) { dateFormatter(note.event?.createdAt(), never, today) }
+
     val subject = remember(note) { note.event?.subject() }
 
+    println("AABBCC $prevDate $date")
+
+    if (prevDate != date) {
         if (subject != null) {
-        NewSubject(newSubject = subject)
+            ChatDivisor("$date - $subject")
+        } else {
+            ChatDivisor(date)
+        }
+    } else {
+        if (subject != null) {
+            ChatDivisor(subject)
+        }
     }
 }
 
 @Composable
-fun NewSubject(newSubject: String) {
+fun ChatDivisor(info: String) {
-    Row(verticalAlignment = Alignment.CenterVertically) {
+    Row(verticalAlignment = Alignment.CenterVertically, modifier = StdPadding) {
         HorizontalDivider(
             modifier = Modifier.weight(1f),
+            thickness = DividerThickness,
         )
         Text(
-            text = newSubject,
+            text = info,
             fontWeight = FontWeight.Bold,
             fontSize = Font14SP,
             modifier = HalfPadding,
         )
         HorizontalDivider(
             modifier = Modifier.weight(1f),
+            thickness = DividerThickness,
         )
     }
 }