accounts: auto re-index sqlite3 database if it's missing

Instead of telling user to do it themselves

src/command/actions.rs

@@ -146,3 +146,38 @@ impl Action {
 type AccountName = String;
 type MailboxPath = String;
 type NewMailboxPath = String;
+
+macro_rules! impl_into_action {
+    ($({$t:ty => $var:tt}),*) => {
+        $(
+            impl From<$t> for Action {
+                fn from(v: $t) -> Self {
+                    Self::$var(v)
+                }
+            }
+        )*
+    };
+}
+macro_rules! impl_tuple_into_action {
+    ($({$a:ty,$b:ty => $var:tt}),*) => {
+        $(
+            impl From<($a,$b)> for Action {
+                fn from((a, b): ($a,$b)) -> Self {
+                    Self::$var(a, b)
+                }
+            }
+        )*
+    };
+}
+
+impl_into_action!(
+    { ListingAction => Listing },
+    { TabAction => Tab },
+    { MailingListAction => MailingListAction },
+    { ViewAction => View },
+    { ComposeAction => Compose }
+);
+impl_tuple_into_action!(
+    { AccountName, MailboxOperation => Mailbox },
+    { AccountName, AccountAction => AccountAction }
+);

src/conf/accounts.rs

@@ -56,6 +56,7 @@ use smallvec::SmallVec;
 
 use super::{AccountConf, FileMailboxConf};
 use crate::{
+    command::actions::AccountAction,
     jobs::{JobExecutor, JobId, JoinHandle},
     types::UIEvent::{self, EnvelopeRemove, EnvelopeRename, EnvelopeUpdate, Notification},
     StatusEvent, ThreadEvent,
@@ -523,13 +524,14 @@ impl Account {
             };
             if let Some(db_path) = db_path {
                 if !db_path.exists() {
+                    log::info!(
+                        "An sqlite3 search database for account `{}` seems to be missing, a new \
+                         one will be created.",
+                        name
+                    );
                     sender
-                        .send(ThreadEvent::UIEvent(UIEvent::StatusEvent(
-                            StatusEvent::DisplayMessage(format!(
-                                "An sqlite3 search database for account `{}` seems to be missing, \
-                                 a new one must be created with the `reindex` command.",
-                                name
-                            )),
+                        .send(ThreadEvent::UIEvent(UIEvent::Action(
+                            (name.clone(), AccountAction::ReIndex).into(),
                         )))
                         .unwrap();
                 }