SES-212 - Always show delivery status of last sent message - FINAL! (#1418)

* Fixes #1408

* Addressed PR feedback

* Cleanup

* PR adjustments

* Further PR adjustments

* Updated libsession-util

* Added fix for crash when no messages

* Ignoring dirty submodules so they don't show up in git

* Re-fixed display of delivery status on last sent message (got broken by disappearing messages)

* Removed ignore dirty modules line in .gitmodules as it all seems to be playing nice now

---------

Co-authored-by: AL-Session <160798022+AL-Session@users.noreply.github.com>
Co-authored-by: Al Lansley <al@oxen.io>

app/src/main/java/org/thoughtcrime/securesms/conversation/v2/ConversationAdapter.kt

@@ -22,10 +22,12 @@ import kotlinx.coroutines.launch
 import network.loki.messenger.R
 import network.loki.messenger.databinding.ViewVisibleMessageBinding
 import org.session.libsession.messaging.contacts.Contact
+import org.session.libsession.utilities.TextSecurePreferences
 import org.thoughtcrime.securesms.conversation.v2.messages.ControlMessageView
 import org.thoughtcrime.securesms.conversation.v2.messages.VisibleMessageView
 import org.thoughtcrime.securesms.conversation.v2.messages.VisibleMessageViewDelegate
 import org.thoughtcrime.securesms.database.CursorRecyclerViewAdapter
+import org.thoughtcrime.securesms.database.MmsSmsColumns
 import org.thoughtcrime.securesms.database.model.MessageRecord
 import org.thoughtcrime.securesms.dependencies.DatabaseComponent
 import org.thoughtcrime.securesms.mms.GlideRequests
@@ -57,6 +59,7 @@ class ConversationAdapter(
     private val contactCache = SparseArray<Contact>(100)
     private val contactLoadedCache = SparseBooleanArray(100)
     private val lastSeen = AtomicLong(originalLastSeen)
+    private var lastSentMessageId: Long = -1L
 
     init {
         lifecycleCoroutineScope.launch(IO) {
@@ -136,7 +139,8 @@ class ConversationAdapter(
                         senderId,
                         lastSeen.get(),
                         visibleMessageViewDelegate,
-                        onAttachmentNeedsDownload
+                        onAttachmentNeedsDownload,
+                        lastSentMessageId
                 )
 
                 if (!message.isDeleted) {
@@ -205,8 +209,23 @@ class ConversationAdapter(
         return messageDB.readerFor(cursor).current
     }
 
+    private fun getLastSentMessageId(cursor: Cursor): Long {
+        // If we don't move to first (or at least step backwards) we can step off the end of the
+        // cursor and any query will return an "Index = -1" error.
+        val cursorHasContent = cursor.moveToFirst()
+        if (cursorHasContent) {
+            val thisThreadId = cursor.getLong(4) // Column index 4 is "thread_id"
+            if (thisThreadId != -1L) {
+                val thisUsersSessionId = TextSecurePreferences.getLocalNumber(context)
+                return messageDB.getLastSentMessageFromSender(thisThreadId, thisUsersSessionId)
+            }
+        }
+        return -1L
+    }
+
     override fun changeCursor(cursor: Cursor?) {
         super.changeCursor(cursor)
+
         val toRemove = mutableSetOf<MessageRecord>()
         val toDeselect = mutableSetOf<Pair<Int, MessageRecord>>()
         for (selected in selectedItems) {
@@ -224,6 +243,11 @@ class ConversationAdapter(
         toDeselect.iterator().forEach { (pos, record) ->
             onDeselect(record, pos)
         }
+
+        // This value gets updated here ONLY when the cursor changes, and the value is then passed
+        // through to `VisibleMessageView.bind` each time we bind via `onBindItemViewHolder`, above.
+        // If there are no messages then lastSentMessageId is assigned the value -1L.
+        if (cursor != null) { lastSentMessageId = getLastSentMessageId(cursor) }
     }
 
     fun findLastSeenItemPosition(lastSeenTimestamp: Long): Int? {

app/src/main/java/org/thoughtcrime/securesms/conversation/v2/messages/VisibleMessageView.kt

@@ -32,6 +32,7 @@ import org.session.libsession.messaging.contacts.Contact
 import org.session.libsession.messaging.contacts.Contact.ContactContext
 import org.session.libsession.messaging.open_groups.OpenGroupApi
 import org.session.libsession.utilities.Address
+import org.session.libsession.utilities.TextSecurePreferences
 import org.session.libsession.utilities.ViewUtil
 import org.session.libsession.utilities.getColorFromAttr
 import org.session.libsession.utilities.modifyLayoutParams
@@ -131,7 +132,8 @@ class VisibleMessageView : LinearLayout {
         senderSessionID: String,
         lastSeen: Long,
         delegate: VisibleMessageViewDelegate? = null,
-        onAttachmentNeedsDownload: (Long, Long) -> Unit
+        onAttachmentNeedsDownload: (Long, Long) -> Unit,
+        lastSentMessageId: Long
     ) {
         val threadID = message.threadId
         val thread = threadDb.getRecipientForThreadId(threadID) ?: return
@@ -195,14 +197,18 @@ class VisibleMessageView : LinearLayout {
         val contactContext =
             if (thread.isOpenGroupRecipient) ContactContext.OPEN_GROUP else ContactContext.REGULAR
         binding.senderNameTextView.text = contact?.displayName(contactContext) ?: senderSessionID
+
         // Unread marker
         binding.unreadMarkerContainer.isVisible = lastSeen != -1L && message.timestamp > lastSeen && (previous == null || previous.timestamp <= lastSeen) && !message.isOutgoing
+
         // Date break
         val showDateBreak = isStartOfMessageCluster || snIsSelected
         binding.dateBreakTextView.text = if (showDateBreak) DateUtils.getDisplayFormattedTimeSpanString(context, Locale.getDefault(), message.timestamp) else null
         binding.dateBreakTextView.isVisible = showDateBreak
+
         // Message status indicator
         showStatusMessage(message)
+
         // Emoji Reactions
         val emojiLayoutParams = binding.emojiReactionsView.root.layoutParams as ConstraintLayout.LayoutParams
         emojiLayoutParams.horizontalBias = if (message.isOutgoing) 1f else 0f
@@ -238,7 +244,8 @@ class VisibleMessageView : LinearLayout {
     }
 
     private fun showStatusMessage(message: MessageRecord) {
-        val disappearing = message.expiresIn > 0
+
+        val scheduledToDisappear = message.expiresIn > 0
 
         binding.messageInnerLayout.modifyLayoutParams<FrameLayout.LayoutParams> {
             gravity = if (message.isOutgoing) Gravity.END else Gravity.START
@@ -250,21 +257,22 @@ class VisibleMessageView : LinearLayout {
 
         binding.expirationTimerView.isGone = true
 
-        if (message.isOutgoing || disappearing) {
+        if (message.isOutgoing || scheduledToDisappear) {
             val (iconID, iconColor, textId) = getMessageStatusImage(message)
             textId?.let(binding.messageStatusTextView::setText)
             iconColor?.let(binding.messageStatusTextView::setTextColor)
             iconID?.let { ContextCompat.getDrawable(context, it) }
                 ?.run { iconColor?.let { mutate().apply { setTint(it) } } ?: this }
                 ?.let(binding.messageStatusImageView::setImageDrawable)
-            
-            val lastMessageID = mmsSmsDb.getLastMessageID(message.threadId)
-            val isLastMessage = message.id == lastMessageID
-            binding.messageStatusTextView.isVisible =
-                textId != null && (!message.isSent || isLastMessage || disappearing)
-            val showTimer = disappearing && !message.isPending
-            binding.messageStatusImageView.isVisible =
-                iconID != null && !showTimer && (!message.isSent || isLastMessage)
+
+            // Always show the delivery status of the last sent message
+            val thisUsersSessionId = TextSecurePreferences.getLocalNumber(context)
+            val lastSentMessageId = mmsSmsDb.getLastSentMessageFromSender(message.threadId, thisUsersSessionId)
+            val isLastSentMessage = lastSentMessageId == message.id
+
+            binding.messageStatusTextView.isVisible = textId != null && (isLastSentMessage || scheduledToDisappear)
+            val showTimer = scheduledToDisappear && !message.isPending
+            binding.messageStatusImageView.isVisible = iconID != null && !showTimer && (!message.isSent || isLastSentMessage)
 
             binding.messageStatusImageView.bringToFront()
             binding.expirationTimerView.bringToFront()

app/src/main/java/org/thoughtcrime/securesms/database/MmsSmsDatabase.java

@@ -209,6 +209,24 @@ public class MmsSmsDatabase extends Database {
     }
   }
 
+  public long getLastSentMessageFromSender(long threadId, String serializedAuthor) {
+    String order = MmsSmsColumns.NORMALIZED_DATE_SENT + " DESC";
+    String selection = MmsSmsColumns.THREAD_ID + " = " + threadId;
+
+    boolean isOwnNumber = Util.isOwnNumber(context, serializedAuthor);
+
+    // Try everything with resources so that they auto-close on end of scope
+    try (Cursor cursor = queryTables(PROJECTION, selection, order, null)) {
+      try (MmsSmsDatabase.Reader reader = readerFor(cursor)) {
+        MessageRecord messageRecord;
+        while ((messageRecord = reader.getNext()) != null) {
+          if (isOwnNumber && messageRecord.isOutgoing()) { return messageRecord.id; }
+        }
+      }
+    }
+    return -1;
+  }
+
   public Cursor getUnread() {
     String order           = MmsSmsColumns.NORMALIZED_DATE_SENT + " ASC";
     String selection       = "(" + MmsSmsColumns.READ + " = 0 OR " + MmsSmsColumns.REACTIONS_UNREAD + " = 1) AND " + MmsSmsColumns.NOTIFIED + " = 0";