From 65408bb56067c10e69821cb99e0d69340584fc42 Mon Sep 17 00:00:00 2001
From: Stephen Paul Weber <singpolyma@singpolyma.net>
Date: Mon, 30 Sep 2024 14:20:49 -0500
Subject: [PATCH] Add fallbacks for reactions

---
 .../generator/MessageGenerator.java           | 20 ++++++++++++++++++-
 .../services/XmppConnectionService.java       |  2 +-
 2 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/src/main/java/eu/siacs/conversations/generator/MessageGenerator.java b/src/main/java/eu/siacs/conversations/generator/MessageGenerator.java
index 259d5decf81bc2b8b38b5fe3bd64e71989a83e17..ab941516a888af6f4121d49c93442c56d59fd193 100644
--- a/src/main/java/eu/siacs/conversations/generator/MessageGenerator.java
+++ b/src/main/java/eu/siacs/conversations/generator/MessageGenerator.java
@@ -14,6 +14,8 @@ import eu.siacs.conversations.entities.Account;
 import eu.siacs.conversations.entities.Conversation;
 import eu.siacs.conversations.entities.Conversational;
 import eu.siacs.conversations.entities.Message;
+import eu.siacs.conversations.ui.util.QuoteHelper;
+import eu.siacs.conversations.utils.MessageUtils;
 import eu.siacs.conversations.services.XmppConnectionService;
 import eu.siacs.conversations.xml.Element;
 import eu.siacs.conversations.xml.Namespace;
@@ -200,7 +202,7 @@ public class MessageGenerator extends AbstractGenerator {
         return packet;
     }
 
-    public im.conversations.android.xmpp.model.stanza.Message reaction(final Conversational conversation, final String reactingTo, final Collection<String> ourReactions) {
+    public im.conversations.android.xmpp.model.stanza.Message reaction(final Conversational conversation, final Message inReplyTo, final String reactingTo, final Collection<String> ourReactions) {
         final boolean groupChat = conversation.getMode() == Conversational.MODE_MULTI;
         final Jid to = conversation.getJid().asBareJid();
         final im.conversations.android.xmpp.model.stanza.Message packet = new im.conversations.android.xmpp.model.stanza.Message();
@@ -211,6 +213,22 @@ public class MessageGenerator extends AbstractGenerator {
         for(final String ourReaction : ourReactions) {
             reactions.addExtension(new Reaction(ourReaction));
         }
+
+        final var quote = QuoteHelper.quote(MessageUtils.prepareQuote(inReplyTo)) + "\n";
+        packet.setBody(quote + String.join(" ", ourReactions));
+
+        packet.addChild("reply", "urn:xmpp:reply:0")
+                .setAttribute("to", inReplyTo.getCounterpart())
+                .setAttribute("id", reactingTo);
+        final var replyFallback = packet.addChild("fallback", "urn:xmpp:fallback:0").setAttribute("for", "urn:xmpp:reply:0");
+        replyFallback.addChild("body", "urn:xmpp:fallback:0")
+                .setAttribute("start", "0")
+                .setAttribute("end", "" + quote.codePointCount(0, quote.length()));
+
+
+        final var fallback = packet.addChild("fallback", "urn:xmpp:fallback:0").setAttribute("for", "urn:xmpp:reactions:0");
+        fallback.addChild("body", "urn:xmpp:fallback:0");
+
         packet.addChild("store", "urn:xmpp:hints");
         return packet;
     }
diff --git a/src/main/java/eu/siacs/conversations/services/XmppConnectionService.java b/src/main/java/eu/siacs/conversations/services/XmppConnectionService.java
index e218dc74c3ec7727b9c462b4ca3cf0650a53c43e..8f2b7d3296612dffaeda86930a69ea40185a33e8 100644
--- a/src/main/java/eu/siacs/conversations/services/XmppConnectionService.java
+++ b/src/main/java/eu/siacs/conversations/services/XmppConnectionService.java
@@ -5305,7 +5305,7 @@ public class XmppConnectionService extends Service {
                 return false;
             }
             final var reactionMessage =
-                    mMessageGenerator.reaction(conversation, reactToId, reactions);
+                    mMessageGenerator.reaction(conversation, message, reactToId, reactions);
             sendMessagePacket(conversation.getAccount(), reactionMessage);
             message.setReactions(combinedReactions);
             updateMessage(message, false);