Add basic moderator commands

src/groups/moderation/arguments.rs

@@ -22,10 +22,7 @@ use crate::{
 /// [`Result<User, ArgumentParser>`] - The user from the DB, or an [`ArgumentParsingError`] ready
 /// to be returned by the parser.
 async fn get_user_by_id(id: u64, db: &Session) -> Result<User, ArgumentParsingError> {
-    let Some(user) = User::get_by_id(id, db)
-        .await
-        .map_err(|_| ArgumentParsingError::DatabaseFailed)?
-    else {
+    let Some(user) = User::get_by_id(id, db).await? else {
         return Err(ArgumentParsingError::InvalidArgument);
     };
     Ok(user)
@@ -49,8 +46,7 @@ async fn user_from_reply_or_command_executor(
             if referenced.author.bot {
                 if let Some(message) =
                     Message::get_by_propagation_message_id(referenced.id.get(), &ctx.rt.state.db)
-                        .await
-                        .map_err(|_| ArgumentParsingError::DatabaseFailed)?
+                        .await?
                 {
                     return get_user_by_id(message.author_id, &ctx.rt.state.db).await;
                 }
@@ -112,10 +108,7 @@ impl FromArguments<State, Extras> for UserArgument {
             } else {
                 // The argument is (probably) a username.
 
-                let Some(db_user) = User::get_by_name(identifier.0, &ctx.rt.state.db)
-                    .await
-                    .map_err(|_| ArgumentParsingError::DatabaseFailed)?
-                else {
+                let Some(db_user) = User::get_by_name(identifier.0, &ctx.rt.state.db).await? else {
                     // Check in the message's reply, and if not use the command executor.
                     user = user_from_reply_or_command_executor(ctx).await?;