Make ephemeral timer changes not ephemeral

python/tests/test_account.py

@@ -1562,7 +1562,9 @@ class TestOnlineAccount:
         system_message1 = ac2._evtracker.wait_next_incoming_message()
         assert chat2.get_ephemeral_timer() == 60
         assert system_message1.is_system_message()
-        assert "Ephemeral timer: 60\n" in system_message1.get_message_info()
+
+        # Disabled until markers are implemented
+        # assert "Ephemeral timer: 60\n" in system_message1.get_message_info()
 
         lp.sec("ac2: send message to ac1")
         sent_message = chat2.send_text("message")

src/chat.rs

@@ -959,7 +959,11 @@ impl Chat {
                     .await?;
             }
 
-            let ephemeral_timer = self.id.get_ephemeral_timer(context).await?;
+            let ephemeral_timer = if msg.param.get_cmd() == SystemMessage::EphemeralTimerChanged {
+                EphemeralTimer::Disabled
+            } else {
+                self.id.get_ephemeral_timer(context).await?
+            };
             let ephemeral_timestamp = match ephemeral_timer {
                 EphemeralTimer::Disabled => 0,
                 EphemeralTimer::Enabled { duration } => timestamp + i64::from(duration),

src/dc_receive_imf.rs

@@ -622,7 +622,7 @@ async fn add_parts(
     }
 
     // Extract ephemeral timer from the message.
-    let timer = if let Some(value) = mime_parser.get(HeaderDef::EphemeralTimer) {
+    let mut timer = if let Some(value) = mime_parser.get(HeaderDef::EphemeralTimer) {
         match value.parse::<EphemeralTimer>() {
             Ok(timer) => timer,
             Err(err) => {
@@ -658,6 +658,14 @@ async fn add_parts(
                         mime_parser,
                         stock_ephemeral_timer_changed(context, timer, from_id).await,
                     );
+
+                    // Do not delete the system message itself.
+                    //
+                    // This prevents confusion when timer is changed
+                    // to 1 week, and then changed to 1 hour: after 1
+                    // hour, only the message about the change to 1
+                    // week is left.
+                    timer = EphemeralTimer::Disabled;
                 } else {
                     chat::add_info_msg(
                         context,