Add info message when autodelete timer is changed

src/dc_receive_imf.rs

@@ -219,6 +219,13 @@ pub fn dc_receive_imf(
     if chat::get_autodelete_timer(context, chat_id) != timer {
         match chat::set_autodelete_timer(context, chat_id, timer) {
             Ok(()) => {
+                let stock_str = context.stock_system_msg(
+                    StockMessage::MsgAutodeleteTimerChanged,
+                    timer.to_string(),
+                    "",
+                    from_id,
+                );
+                chat::add_info_msg(context, chat_id, stock_str);
                 context.call_cb(Event::ChatAutodeleteTimerModified { chat_id, timer });
             }
             Err(err) => {

src/mimefactory.rs

@@ -710,6 +710,12 @@ impl<'a, 'b> MimeFactory<'a, 'b> {
                     "location-streaming-enabled".into(),
                 ));
             }
+            SystemMessage::AutodeleteTimerChanged => {
+                protected_headers.push(Header::new(
+                    "Chat-Content".to_string(),
+                    "autodelete-timer-changed".to_string(),
+                ));
+            }
             SystemMessage::AutocryptSetupMessage => {
                 unprotected_headers
                     .push(Header::new("Autocrypt-Setup-Message".into(), "v1".into()));

src/mimeparser.rs

@@ -71,6 +71,9 @@ pub enum SystemMessage {
     SecurejoinMessage = 7,
     LocationStreamingEnabled = 8,
     LocationOnly = 9,
+
+    /// Chat autodelete timer is changed.
+    AutodeleteTimerChanged = 10,
 }
 
 impl Default for SystemMessage {
@@ -206,6 +209,8 @@ impl MimeMessage {
         } else if let Some(value) = self.get(HeaderDef::ChatContent) {
             if value == "location-streaming-enabled" {
                 self.is_system_message = SystemMessage::LocationStreamingEnabled;
+            } else if value == "autodelete-timer-changed" {
+                self.is_system_message = SystemMessage::AutodeleteTimerChanged;
             }
         }
         Ok(())

src/stock.rs

@@ -179,6 +179,9 @@ pub enum StockMessage {
 
     #[strum(props(fallback = "Unknown Sender for this chat. See 'info' for more details."))]
     UnknownSenderForChat = 72,
+
+    #[strum(props(fallback = "Autodelete timer changed to %1$s."))]
+    MsgAutodeleteTimerChanged = 73,
 }
 
 /*