uplift(release): fix: relative date format crash (#11154) (#11217)

coreycb · web-flow · commit 9f189cc31c3b · 2026-06-29T15:14:07.000-04:00
diff --git a/legacy/ui/legacy/src/main/java/com/fsck/k9/ui/helper/RelativeDateTimeFormatter.kt b/legacy/ui/legacy/src/main/java/com/fsck/k9/ui/helper/RelativeDateTimeFormatter.kt
@@ -9,34 +9,58 @@ import android.text.format.DateUtils.FORMAT_SHOW_DATE
 import android.text.format.DateUtils.FORMAT_SHOW_TIME
 import android.text.format.DateUtils.FORMAT_SHOW_WEEKDAY
 import android.text.format.DateUtils.FORMAT_SHOW_YEAR
-import java.text.SimpleDateFormat
-import java.util.Calendar
-import java.util.Calendar.DAY_OF_WEEK
-import java.util.Calendar.YEAR
-import java.util.Locale
 import kotlin.time.Clock
-import kotlin.time.ExperimentalTime
 import kotlin.time.Instant
+import kotlinx.datetime.LocalDateTime
+import kotlinx.datetime.TimeZone
+import kotlinx.datetime.daysUntil
+import kotlinx.datetime.format.char
+import kotlinx.datetime.toLocalDateTime
 import net.thunderbird.core.preference.display.visualSettings.message.list.MessageListDateTimeFormat
 
 /**
  * Formatter to describe timestamps as a time relative to now.
+ *
+ * @param context The context to use for formatting dates.
+ * @param clock The clock to use for getting the current time.
  */
-class RelativeDateTimeFormatter
-@OptIn(ExperimentalTime::class)
-constructor(
+class RelativeDateTimeFormatter(
     private val context: Context,
     private val clock: Clock,
 ) {
+    /**
+     * Format a date using the given [dateTimeFormat].
+     *
+     * @param timestamp The timestamp to format.
+     * @param dateTimeFormat The date format to use.
+     */
+    fun formatDate(
+        timestamp: Long,
+        dateTimeFormat: MessageListDateTimeFormat,
+    ): String {
+        val timeZone = TimeZone.currentSystemDefault()
+        val now = clock.now().toLocalDateTime(timeZone)
+
+        return formatDate(
+            timestamp = timestamp,
+            dateTimeFormat = dateTimeFormat,
+            now = now,
+            timeZone = timeZone,
+        )
+    }
+
+    private fun formatDate(
+        timestamp: Long,
+        dateTimeFormat: MessageListDateTimeFormat,
+        now: LocalDateTime,
+        timeZone: TimeZone,
+    ): String {
+        val date = Instant.fromEpochMilliseconds(timestamp).toLocalDateTime(timeZone)
 
-    fun formatDate(timestamp: Long, dateTimeFormat: MessageListDateTimeFormat): String {
-        @OptIn(ExperimentalTime::class)
-        val now = clock.now().toCalendar()
-        val date = timestamp.toCalendar()
         return when (dateTimeFormat) {
             MessageListDateTimeFormat.Contextual -> {
                 val flags = when {
-                    date.isToday() -> FORMAT_SHOW_TIME
+                    date.isSameDayAs(now) -> FORMAT_SHOW_TIME
                     date.isWithinPastSevenDaysOf(now) -> FORMAT_SHOW_WEEKDAY or FORMAT_ABBREV_WEEKDAY
                     date.isSameYearAs(now) -> FORMAT_SHOW_DATE or FORMAT_ABBREV_MONTH
                     else -> FORMAT_SHOW_DATE or FORMAT_SHOW_YEAR or FORMAT_NUMERIC_DATE
@@ -48,30 +72,37 @@ constructor(
                 DateUtils.formatDateRange(context, timestamp, timestamp, flags)
             }
             MessageListDateTimeFormat.ISO -> {
-                val sdf = SimpleDateFormat("yyyy-MM-dd HH:mm", Locale.getDefault())
-                sdf.format(java.util.Date(timestamp))
+                isoDateTimeFormat.format(date)
             }
         }
     }
-}
 
-private fun Long.toCalendar(): Calendar {
-    val calendar = Calendar.getInstance()
-    calendar.timeInMillis = this
-    return calendar
-}
+    private fun LocalDateTime.isSameDayAs(other: LocalDateTime): Boolean {
+        return date == other.date
+    }
 
-@OptIn(ExperimentalTime::class)
-private fun Instant.toCalendar(): Calendar {
-    val calendar = Calendar.getInstance()
-    calendar.timeInMillis = this.toEpochMilliseconds()
-    return calendar
-}
+    private fun LocalDateTime.isWithinPastSevenDaysOf(other: LocalDateTime): Boolean {
+        val daysUntil = date.daysUntil(other.date)
+        return daysUntil in 1 until DAYS_PER_WEEK
+    }
 
-private fun Calendar.isToday() = DateUtils.isToday(this.timeInMillis)
+    private fun LocalDateTime.isSameYearAs(other: LocalDateTime): Boolean {
+        return year == other.year
+    }
 
-private fun Calendar.isWithinPastSevenDaysOf(other: Calendar) = this.before(other) &&
-    DateUtils.WEEK_IN_MILLIS > other.timeInMillis - this.timeInMillis &&
-    this[DAY_OF_WEEK] != other[DAY_OF_WEEK]
+    private companion object {
+        private const val DAYS_PER_WEEK = 7
 
-private fun Calendar.isSameYearAs(other: Calendar) = this[YEAR] == other[YEAR]
+        val isoDateTimeFormat = LocalDateTime.Format {
+            year()
+            char('-')
+            monthNumber()
+            char('-')
+            day()
+            char(' ')
+            hour()
+            char(':')
+            minute()
+        }
+    }
+}
diff --git a/legacy/ui/legacy/src/main/java/com/fsck/k9/ui/messagelist/KoinModule.kt b/legacy/ui/legacy/src/main/java/com/fsck/k9/ui/messagelist/KoinModule.kt
@@ -18,7 +18,6 @@ val messageListUiModule = module {
             messageHelper = get(),
             messageListPreferencesManager = get(),
             outboxFolderManager = get(),
-            relativeDateTimeFormatter = get(),
             featureFlagProvider = get(),
             contactLetterBitmapCreator = get(),
         )
diff --git a/legacy/ui/legacy/src/main/java/com/fsck/k9/ui/messagelist/LegacyMessageListFragment.kt b/legacy/ui/legacy/src/main/java/com/fsck/k9/ui/messagelist/LegacyMessageListFragment.kt
@@ -68,6 +68,7 @@ import com.fsck.k9.ui.changelog.RecentChangesActivity
 import com.fsck.k9.ui.changelog.RecentChangesViewModel
 import com.fsck.k9.ui.choosefolder.ChooseFolderActivity
 import com.fsck.k9.ui.choosefolder.ChooseFolderResultContract
+import com.fsck.k9.ui.helper.RelativeDateTimeFormatter
 import com.fsck.k9.ui.messagelist.MessageListFragmentBridgeContract.MessageListFragmentListener
 import com.fsck.k9.ui.messagelist.MessageListFragmentBridgeContract.MessageListFragmentListener.Companion.MAX_PROGRESS
 import com.fsck.k9.ui.messagelist.debug.AuthDebugActions
@@ -80,10 +81,8 @@ import java.util.concurrent.Future
 import kotlin.time.ExperimentalTime
 import kotlinx.collections.immutable.persistentSetOf
 import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.flow.distinctUntilChanged
 import kotlinx.coroutines.flow.drop
 import kotlinx.coroutines.flow.launchIn
-import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.flow.onEach
 import kotlinx.coroutines.launch
 import net.jcip.annotations.GuardedBy
@@ -183,6 +182,7 @@ class LegacyMessageListFragment :
 
     private val contactRepository: ContactRepository by inject()
     private val avatarMonogramCreator: AvatarMonogramCreator by inject()
+    private val relativeDateTimeFormatter: RelativeDateTimeFormatter by inject()
 
     private val chooseFolderForMoveLauncher: ActivityResultLauncher<ChooseFolderResultContract.Input> =
         registerForActivityResult(ChooseFolderResultContract(ChooseFolderActivity.Action.MOVE)) { result ->
@@ -318,18 +318,25 @@ class LegacyMessageListFragment :
 
         adapter = createMessageListAdapter()
 
+        var observedDateTimeFormat = messageListSettings.dateTimeFormat
         generalSettingsManager.getSettingsFlow()
             /**
              * Skips the first emitted item from the settings flow,
-             * since the initial value of `showingThreadedList` is taken
-             * from the fragment's arguments rather than the flow.
+             * since initial display settings are taken from fragment state and current preferences.
              */
             .drop(1)
-            .map { it.display.inboxSettings.isThreadedViewEnabled }
-            .distinctUntilChanged()
-            .onEach {
-                showingThreadedList = it
-                loadMessageList(forceUpdate = true)
+            .onEach { generalSettings ->
+                val isThreadedViewEnabled = generalSettings.display.inboxSettings.isThreadedViewEnabled
+                if (showingThreadedList != isThreadedViewEnabled) {
+                    showingThreadedList = isThreadedViewEnabled
+                    loadMessageList(forceUpdate = true)
+                }
+
+                val dateTimeFormat = generalSettings.display.visualSettings.messageListSettings.dateTimeFormat
+                if (observedDateTimeFormat != dateTimeFormat) {
+                    observedDateTimeFormat = dateTimeFormat
+                    adapter.refreshFormattedDates()
+                }
             }
             .launchIn(lifecycleScope)
 
@@ -405,6 +412,9 @@ class LegacyMessageListFragment :
             featureFlagProvider = featureFlagProvider,
             contactRepository = contactRepository,
             avatarMonogramCreator = avatarMonogramCreator,
+            formatDate = { timestamp ->
+                relativeDateTimeFormatter.formatDate(timestamp, messageListSettings.dateTimeFormat)
+            },
         ).apply {
             activeMessage = this@LegacyMessageListFragment.activeMessage
         }
diff --git a/legacy/ui/legacy/src/main/java/com/fsck/k9/ui/messagelist/MessageListAdapter.kt b/legacy/ui/legacy/src/main/java/com/fsck/k9/ui/messagelist/MessageListAdapter.kt
@@ -48,6 +48,7 @@ class MessageListAdapter internal constructor(
     private val featureFlagProvider: FeatureFlagProvider,
     private val contactRepository: ContactRepository,
     private val avatarMonogramCreator: AvatarMonogramCreator,
+    private val formatDate: (Long) -> String,
 ) : RecyclerView.Adapter<MessageListViewHolder>() {
 
     val colors: MessageViewHolderColors = MessageViewHolderColors.resolveColors(theme)
@@ -170,6 +171,10 @@ class MessageListAdapter internal constructor(
         return viewItems[position].viewType
     }
 
+    fun refreshFormattedDates() {
+        notifyItemRangeChanged(0, itemCount)
+    }
+
     private fun getItem(position: Int): MessageListItem = (viewItems[position] as MessageListViewItem.Message).item
 
     fun getItemById(uniqueId: Long): MessageListItem? {
@@ -263,18 +268,19 @@ class MessageListAdapter internal constructor(
 
             TYPE_MESSAGE -> {
                 val messageListItem = getItem(position)
+                val formattedMessageListItem = messageListItem.withFormattedDate()
                 val result = featureFlagProvider.provide(UseComposeForMessageListItems)
                 if (result.isEnabled()) {
                     val messageViewHolder = holder as ComposableMessageViewHolder
                     messageViewHolder.bind(
-                        item = messageListItem,
+                        item = formattedMessageListItem,
                         isActive = isActiveMessage(messageListItem),
                         isSelected = isSelected(messageListItem),
                     )
                 } else {
                     val messageViewHolder = holder as MessageViewHolder
                     messageViewHolder.bind(
-                        messageListItem = messageListItem,
+                        messageListItem = formattedMessageListItem,
                         isActive = isActiveMessage(messageListItem),
                         isSelected = isSelected(messageListItem),
                     )
@@ -301,6 +307,10 @@ class MessageListAdapter internal constructor(
             item.messageUid == activeMessage.uid
     }
 
+    private fun MessageListItem.withFormattedDate(): MessageListItem {
+        return copy(displayMessageDateTime = formatDate(messageDate))
+    }
+
     fun isSelected(item: MessageListItem): Boolean {
         return item.uniqueId in selected
     }
diff --git a/legacy/ui/legacy/src/main/java/com/fsck/k9/ui/messagelist/MessageListItemMapper.kt b/legacy/ui/legacy/src/main/java/com/fsck/k9/ui/messagelist/MessageListItemMapper.kt
@@ -15,7 +15,6 @@ class MessageListItemMapper(
     private val account: LegacyAccount,
     private val messageListPreferencesManager: MessageListPreferencesManager,
     private val outboxFolderManager: OutboxFolderManager,
-    private val formatDate: (Long) -> String,
     private val contactLetterBitmapCreator: ContactLetterBitmapCreator?,
 ) : MessageMapper<MessageListItem> {
 
@@ -39,7 +38,6 @@ class MessageListItemMapper(
         } else {
             messageHelper.getSenderDisplayName(displayAddress)
         }
-        val displayMessageDateTime = formatDate(message.messageDate)
 
         return MessageListItem(
             account,
@@ -49,7 +47,7 @@ class MessageListItemMapper(
             message.internalDate,
             displayName,
             displayAddress,
-            displayMessageDateTime,
+            displayMessageDateTime = "undefined",
             previewText,
             isMessageEncrypted,
             message.isRead,
diff --git a/legacy/ui/legacy/src/main/java/com/fsck/k9/ui/messagelist/MessageListLoader.kt b/legacy/ui/legacy/src/main/java/com/fsck/k9/ui/messagelist/MessageListLoader.kt
@@ -6,7 +6,6 @@ import com.fsck.k9.helper.MessageHelper
 import com.fsck.k9.mailstore.LocalStoreProvider
 import com.fsck.k9.mailstore.MessageColumns
 import com.fsck.k9.search.getLegacyAccounts
-import com.fsck.k9.ui.helper.RelativeDateTimeFormatter
 import net.thunderbird.core.android.account.LegacyAccount
 import net.thunderbird.core.android.account.LegacyAccountManager
 import net.thunderbird.core.android.account.SortType
@@ -27,7 +26,6 @@ class MessageListLoader(
     private val messageHelper: MessageHelper,
     private val messageListPreferencesManager: MessageListPreferencesManager,
     private val outboxFolderManager: OutboxFolderManager,
-    private val relativeDateTimeFormatter: RelativeDateTimeFormatter,
     private val featureFlagProvider: FeatureFlagProvider,
     private val contactLetterBitmapCreator: ContactLetterBitmapCreator,
 ) {
@@ -65,12 +63,6 @@ class MessageListLoader(
             account,
             messageListPreferencesManager,
             outboxFolderManager,
-            formatDate = { formatTime ->
-                relativeDateTimeFormatter.formatDate(
-                    formatTime,
-                    messageListPreferencesManager.getConfig().dateTimeFormat,
-                )
-            },
             contactLetterBitmapCreator = contactLetterBitmapCreator.takeIf {
                 featureFlagProvider.provide(MessageListFeatureFlags.UseComposeForMessageListItems).isEnabled()
             },
diff --git a/legacy/ui/legacy/src/test/java/com/fsck/k9/ui/helper/RelativeDateTimeFormatterTest.kt b/legacy/ui/legacy/src/test/java/com/fsck/k9/ui/helper/RelativeDateTimeFormatterTest.kt
@@ -178,6 +178,7 @@ class RelativeDateTimeFormatterTest : RobolectricTest() {
 
         assertThat(displayDate).isEqualTo("2019-12-31 23:59")
     }
+
     private fun setClockTo(time: String) {
         val dateTime = LocalDateTime.parse(time)
         val timeInMillis = dateTime.toEpochMillis()
diff --git a/legacy/ui/legacy/src/test/java/com/fsck/k9/ui/messagelist/MessageListAdapterTest.kt b/legacy/ui/legacy/src/test/java/com/fsck/k9/ui/messagelist/MessageListAdapterTest.kt
@@ -442,6 +442,7 @@ class MessageListAdapterTest : RobolectricTest() {
             featureFlagProvider = FakeFeatureFlagProvider(),
             avatarMonogramCreator = mock(),
             contactRepository = mock(),
+            formatDate = { "12:34" },
         )
     }
 

Original file line number	Diff line number	Diff line change
`@@ -18,7 +18,6 @@ val messageListUiModule = module {`
`18`	`18`	`messageHelper = get(),`
`19`	`19`	`messageListPreferencesManager = get(),`
`20`	`20`	`outboxFolderManager = get(),`
`21`		`- relativeDateTimeFormatter = get(),`
`22`	`21`	`featureFlagProvider = get(),`
`23`	`22`	`contactLetterBitmapCreator = get(),`
`24`	`23`	`)`
Original file line number	Diff line number	Diff line change
`@@ -178,6 +178,7 @@ class RelativeDateTimeFormatterTest : RobolectricTest() {`
`178`	`178`
`179`	`179`	`assertThat(displayDate).isEqualTo("2019-12-31 23:59")`
`180`	`180`	`}`
	`181`	`+`
`181`	`182`	`private fun setClockTo(time: String) {`
`182`	`183`	`val dateTime = LocalDateTime.parse(time)`
`183`	`184`	`val timeInMillis = dateTime.toEpochMillis()`
Original file line number	Diff line number	Diff line change
`@@ -442,6 +442,7 @@ class MessageListAdapterTest : RobolectricTest() {`
`442`	`442`	`featureFlagProvider = FakeFeatureFlagProvider(),`
`443`	`443`	`avatarMonogramCreator = mock(),`
`444`	`444`	`contactRepository = mock(),`
	`445`	`+ formatDate = { "12:34" },`
`445`	`446`	`)`
`446`	`447`	`}`
`447`	`448`