revert logic to get last_seen_uid

src/configure/mod.rs

@@ -383,11 +383,10 @@ pub fn JobConfigureImap(context: &Context) {
                 // (~30 seconds on a Moto G4 play) and might looks as if message sending is always that slow.
                 e2ee::ensure_secret_key_exists(context);
                 success = true;
-                info!(context, "Configure completed.");
+                info!(context, "key generation completed");
                 progress!(context, 940);
                 break; // We are done here
             }
-
             _ => {
                 error!(context, "Internal error: step counter out of bound",);
                 break;
@@ -410,24 +409,6 @@ pub fn JobConfigureImap(context: &Context) {
         context.smtp.clone().lock().unwrap().disconnect();
     }
 
-    /*
-    if !success {
-        // disconnect if configure did not succeed
-        if imap_connected_here {
-            // context.inbox.read().unwrap().disconnect(context);
-        }
-        if smtp_connected_here {
-            // context.smtp.clone().lock().unwrap().disconnect();
-        }
-    } else {
-        assert!(imap_connected_here && smtp_connected_here);
-        info!(
-            context,
-            0, "Keeping IMAP/SMTP connections open after successful configuration"
-        );
-    }
-    */
-
     // remember the entered parameters on success
     // and restore to last-entered on failure.
     // this way, the parameters visible to the ui are always in-sync with the current configuration.

src/imap.rs

@@ -587,13 +587,12 @@ impl Imap {
                 );
                 if let Some(ref mut session) = &mut *self.session.lock().await {
                     // `FETCH <message sequence number> (UID)`
-                    let set = format!("{}:*", mailbox.exists);
+                    // note that we use fetch by sequence number
+                    // and thus we only need to get exactly the
+                    // last-index message.
+                    let set = format!("{}", mailbox.exists);
                     match session.fetch(set, JUST_UID).await {
-                        Ok(list) => list
-                            .iter()
-                            .last()
-                            .and_then(|res| res.uid)
-                            .unwrap_or_default(),
+                        Ok(list) => list[0].uid.unwrap_or_else(|| 0),
                         Err(err) => {
                             bail!("fetch failed: {:?}", err);
                         }
@@ -602,7 +601,7 @@ impl Imap {
                     return Err(Error::ImapNoConnection);
                 }
             } else {
-                mailbox.uid_next.unwrap() - 1
+                max(0, mailbox.uid_next.unwrap() - 1)
             };
 
             self.set_config_last_seen_uid(context, &folder, new_uid_validity, new_last_seen_uid);
@@ -1334,6 +1333,7 @@ impl Imap {
                     .set_raw_config_int(context, "folders_configured", 3)
                     .ok();
             }
+            info!(context, "FINISHED configuring IMAP-folders.");
         })
     }