feat(deltachat-repl): allow to send messages when disconnected

If scheduler is not connected,
use `send_msg_sync` to create a dedicated connection
and send a single message.

This allows easily testing SMTP connection establishment.

Author: link2xt

deltachat-repl/src/cmdline.rs

@@ -922,7 +922,13 @@ pub async fn cmdline(context: Context, line: &str, chat_id: &mut ChatId) -> Resu
 
             let msg = format!("{arg1} {arg2}");
 
-            chat::send_text_msg(&context, sel_chat.as_ref().unwrap().get_id(), msg).await?;
+            if context.is_running().await {
+                chat::send_text_msg(&context, sel_chat.as_ref().unwrap().get_id(), msg).await?;
+            } else {
+                let mut msg = Message::new_text(msg);
+                chat::send_msg_sync(&context, sel_chat.as_ref().unwrap().get_id(), &mut msg)
+                    .await?;
+            }
         }
         "sendempty" => {
             ensure!(sel_chat.is_some(), "No chat selected.");

src/context.rs

@@ -479,6 +479,11 @@ impl Context {
         self.scheduler.stop(self).await;
     }
 
+    /// Returns true if IO scheduler is running.
+    pub async fn is_running(&self) -> bool {
+        self.scheduler.is_running().await
+    }
+
     /// Restarts the IO scheduler if it was running before
     /// when it is not running this is an no-op
     pub async fn restart_io_if_running(&self) {