Implement Command for ShortHelp

CHANGELOG.md

@@ -15,6 +15,7 @@ Procedure when bumping the version number:
 
 ### Added
 - `bot::botrulez::Ping` now implements `bot::command::Command`
+- `bot::botrulez::ShortHelp` now implements `bot::command::Command`
 
 ### Changed
 - Instances log to target `euphoxide::live::<name>`

src/bot/botrulez/short_help.rs

@@ -2,13 +2,9 @@ use async_trait::async_trait;
 use clap::Parser;
 
 use crate::api::Message;
-use crate::bot::command::{ClapCommand, Context};
+use crate::bot::command::{ClapCommand, Command, Context};
 use crate::conn;
 
-/// Show short bot help.
-#[derive(Parser)]
-pub struct Args {}
-
 pub struct ShortHelp(pub String);
 
 impl ShortHelp {
@@ -17,6 +13,29 @@ impl ShortHelp {
     }
 }
 
+#[async_trait]
+impl<B, E> Command<B, E> for ShortHelp
+where
+    E: From<conn::Error>,
+{
+    async fn execute(
+        &self,
+        arg: &str,
+        msg: &Message,
+        ctx: &Context,
+        _bot: &mut B,
+    ) -> Result<(), E> {
+        if arg.trim().is_empty() {
+            ctx.reply(msg.id, &self.0).await?;
+        }
+        Ok(())
+    }
+}
+
+/// Show short bot help.
+#[derive(Parser)]
+pub struct Args {}
+
 #[async_trait]
 impl<B, E> ClapCommand<B, E> for ShortHelp
 where