feat: Mark reactions as IMAP-seen in marknoticed_chat() (#6210)

When a reaction notification is shown in the UIs, there's an option "Mark Read", but the UIs are
unaware of reactions message ids, moreover there are no `msgs` rows for reactions in the core, so
the UIs just call `marknoticed_chat()` in this case. We don't want to introduce reactions message
ids to the UIs (at least currently), but let's make reactions usual messages, just hidden, so that
the existing `\Seen` flag synchronisation mechanism works for them, and mark all reactions in the
chat as seen in marknoticed_chat().

src/chat.rs

@@ -3295,10 +3295,10 @@ pub async fn marknoticed_chat(context: &Context, chat_id: ChatId) -> Result<()>
             .query_map(
                 "SELECT DISTINCT(m.chat_id) FROM msgs m
                     LEFT JOIN chats c ON m.chat_id=c.id
-                    WHERE m.state=10 AND m.hidden=0 AND m.chat_id>9 AND c.blocked=0 AND c.archived=1",
-                    (),
+                    WHERE m.state=10 AND m.chat_id>9 AND c.blocked=0 AND c.archived=1",
+                (),
                 |row| row.get::<_, ChatId>(0),
-                |ids| ids.collect::<Result<Vec<_>, _>>().map_err(Into::into)
+                |ids| ids.collect::<Result<Vec<_>, _>>().map_err(Into::into),
             )
             .await?;
         if chat_ids_in_archive.is_empty() {
@@ -3309,7 +3309,7 @@ pub async fn marknoticed_chat(context: &Context, chat_id: ChatId) -> Result<()>
             .sql
             .execute(
                 &format!(
-                    "UPDATE msgs SET state=13 WHERE state=10 AND hidden=0 AND chat_id IN ({});",
+                    "UPDATE msgs SET state=13 WHERE state=10 AND chat_id IN ({});",
                     sql::repeat_vars(chat_ids_in_archive.len())
                 ),
                 rusqlite::params_from_iter(&chat_ids_in_archive),
@@ -3319,20 +3319,38 @@ pub async fn marknoticed_chat(context: &Context, chat_id: ChatId) -> Result<()>
             context.emit_event(EventType::MsgsNoticed(chat_id_in_archive));
             chatlist_events::emit_chatlist_item_changed(context, chat_id_in_archive);
         }
-    } else if context
-        .sql
-        .execute(
-            "UPDATE msgs
-            SET state=?
-          WHERE state=?
-            AND hidden=0
-            AND chat_id=?;",
-            (MessageState::InNoticed, MessageState::InFresh, chat_id),
-        )
-        .await?
-        == 0
-    {
-        return Ok(());
+    } else {
+        let conn_fn = |conn: &mut rusqlite::Connection| {
+            let nr_msgs_noticed = conn.execute(
+                "UPDATE msgs
+                    SET state=?
+                    WHERE state=?
+                    AND hidden=0
+                    AND chat_id=?",
+                (MessageState::InNoticed, MessageState::InFresh, chat_id),
+            )?;
+            let mut stmt = conn.prepare(
+                "SELECT id FROM msgs
+                    WHERE state>=? AND state<?
+                    AND hidden=1
+                    AND chat_id=?",
+            )?;
+            let hidden_msgs = stmt
+                .query_map(
+                    (MessageState::InFresh, MessageState::InSeen, chat_id),
+                    |row| {
+                        let id: MsgId = row.get(0)?;
+                        Ok(id)
+                    },
+                )?
+                .collect::<std::result::Result<Vec<_>, _>>()?;
+            Ok((nr_msgs_noticed, hidden_msgs))
+        };
+        let (nr_msgs_noticed, hidden_msgs) = context.sql.call_write(conn_fn).await?;
+        if nr_msgs_noticed == 0 && hidden_msgs.is_empty() {
+            return Ok(());
+        }
+        message::markseen_msgs(context, hidden_msgs).await?;
     }
 
     context.emit_event(EventType::MsgsNoticed(chat_id));
@@ -3377,7 +3395,6 @@ pub(crate) async fn mark_old_messages_as_noticed(
                     "UPDATE msgs
             SET state=?
           WHERE state=?
-            AND hidden=0
             AND chat_id=?
             AND timestamp<=?;",
                     (

src/reaction.rs

@@ -397,7 +397,7 @@ mod tests {
     use deltachat_contact_tools::ContactAddress;
 
     use super::*;
-    use crate::chat::{forward_msgs, get_chat_msgs, send_text_msg};
+    use crate::chat::{forward_msgs, get_chat_msgs, marknoticed_chat, send_text_msg};
     use crate::chatlist::Chatlist;
     use crate::config::Config;
     use crate::contact::{Contact, Origin};
@@ -641,7 +641,8 @@ Here's my footer -- [email protected]"
         assert_eq!(get_chat_msgs(&bob, bob_msg.chat_id).await?.len(), 2);
 
         let bob_reaction_msg = bob.pop_sent_msg().await;
-        alice.recv_msg_trash(&bob_reaction_msg).await;
+        let alice_reaction_msg = alice.recv_msg_hidden(&bob_reaction_msg).await;
+        assert_eq!(alice_reaction_msg.state, MessageState::InFresh);
         assert_eq!(get_chat_msgs(&alice, chat_alice.id).await?.len(), 2);
 
         let reactions = get_msg_reactions(&alice, alice_msg.sender_msg_id).await?;
@@ -657,6 +658,20 @@ Here's my footer -- [email protected]"
             .await?;
         expect_incoming_reactions_event(&alice, alice_msg.sender_msg_id, *bob_id, "👍").await?;
 
+        marknoticed_chat(&alice, chat_alice.id).await?;
+        assert_eq!(
+            alice_reaction_msg.id.get_state(&alice).await?,
+            MessageState::InSeen
+        );
+        // Reactions don't request MDNs.
+        assert_eq!(
+            alice
+                .sql
+                .count("SELECT COUNT(*) FROM smtp_mdns", ())
+                .await?,
+            0
+        );
+
         // Alice reacts to own message.
         send_reaction(&alice, alice_msg.sender_msg_id, "👍 😀")
             .await
@@ -695,7 +710,7 @@ Here's my footer -- [email protected]"
         bob_msg1.chat_id.accept(&bob).await?;
         send_reaction(&bob, bob_msg1.id, "👍").await?;
         let bob_send_reaction = bob.pop_sent_msg().await;
-        alice.recv_msg_trash(&bob_send_reaction).await;
+        alice.recv_msg_hidden(&bob_send_reaction).await;
         assert!(has_incoming_reactions_event(&alice).await);
 
         let chatlist = Chatlist::try_load(&bob, 0, None, None).await?;
@@ -855,7 +870,7 @@ Here's my footer -- [email protected]"
         let bob_reaction_msg = bob.pop_sent_msg().await;
 
         // Alice receives a reaction.
-        alice.recv_msg_trash(&bob_reaction_msg).await;
+        alice.recv_msg_hidden(&bob_reaction_msg).await;
 
         let reactions = get_msg_reactions(&alice, alice_msg_id).await?;
         assert_eq!(reactions.to_string(), "👍1");
@@ -907,7 +922,7 @@ Here's my footer -- [email protected]"
         {
             send_reaction(&alice2, alice2_msg.id, "👍").await?;
             let msg = alice2.pop_sent_msg().await;
-            alice1.recv_msg_trash(&msg).await;
+            alice1.recv_msg_hidden(&msg).await;
         }
 
         // Check that the status is still the same.
@@ -929,7 +944,7 @@ Here's my footer -- [email protected]"
         let alice1_msg = alice1.recv_msg(&alice0.pop_sent_msg().await).await;
 
         send_reaction(&alice0, alice0_msg_id, "👀").await?;
-        alice1.recv_msg_trash(&alice0.pop_sent_msg().await).await;
+        alice1.recv_msg_hidden(&alice0.pop_sent_msg().await).await;
 
         expect_reactions_changed_event(&alice0, chat_id, alice0_msg_id, ContactId::SELF).await?;
         expect_reactions_changed_event(&alice1, alice1_msg.chat_id, alice1_msg.id, ContactId::SELF)

src/receive_imf.rs

@@ -758,7 +758,7 @@ async fn add_parts(
     // (of course, the user can add other chats manually later)
     let to_id: ContactId;
     let state: MessageState;
-    let mut hidden = false;
+    let mut hidden = is_reaction;
     let mut needs_delete_job = false;
     let mut restore_protection = false;
 
@@ -1016,12 +1016,7 @@ async fn add_parts(
             }
         }
 
-        state = if seen
-            || fetching_existing_messages
-            || is_mdn
-            || is_reaction
-            || chat_id_blocked == Blocked::Yes
-        {
+        state = if seen || fetching_existing_messages || is_mdn || chat_id_blocked == Blocked::Yes {
             MessageState::InSeen
         } else {
             MessageState::InFresh
@@ -1230,7 +1225,7 @@ async fn add_parts(
     }
 
     let orig_chat_id = chat_id;
-    let mut chat_id = if is_mdn || is_reaction {
+    let mut chat_id = if is_mdn {
         DC_CHAT_ID_TRASH
     } else {
         chat_id.unwrap_or_else(|| {

src/test_utils.rs

@@ -607,6 +607,19 @@ impl TestContext {
         msg
     }
 
+    /// Receive a message using the `receive_imf()` pipeline. Panics if it's not hidden.
+    pub async fn recv_msg_hidden(&self, msg: &SentMessage<'_>) -> Message {
+        let received = self
+            .recv_msg_opt(msg)
+            .await
+            .expect("receive_imf() seems not to have added a new message to the db");
+        let msg = Message::load_from_db(self, *received.msg_ids.last().unwrap())
+            .await
+            .unwrap();
+        assert!(msg.hidden);
+        msg
+    }
+
     /// Receive a message using the `receive_imf()` pipeline. This is similar
     /// to `recv_msg()`, but doesn't assume that the message is shown in the chat.
     pub async fn recv_msg_opt(