osu: Implement check button!

youmubot-prelude/src/hook.rs

@@ -1,5 +1,5 @@
 use crate::{async_trait, future, Context, Result};
-use serenity::model::channel::Message;
+use serenity::{all::Interaction, model::channel::Message};
 
 /// Hook represents the asynchronous hook that is run on every message.
 #[async_trait]
@@ -22,3 +22,25 @@ where
         self(ctx, message).await
     }
 }
+
+/// InteractionHook represents the asynchronous hook that is run on every interaction.
+#[async_trait]
+pub trait InteractionHook: Send + Sync {
+    async fn call(&mut self, ctx: &Context, interaction: &Interaction) -> Result<()>;
+}
+
+#[async_trait]
+impl<T> InteractionHook for T
+where
+    T: for<'a> FnMut(
+            &'a Context,
+            &'a Interaction,
+        )
+            -> std::pin::Pin<Box<dyn future::Future<Output = Result<()>> + 'a + Send>>
+        + Send
+        + Sync,
+{
+    async fn call(&mut self, ctx: &Context, interaction: &Interaction) -> Result<()> {
+        self(ctx, interaction).await
+    }
+}

youmubot-prelude/src/pagination.rs

@@ -164,7 +164,8 @@ pub async fn paginate(
     paginate_with_first_message(pager, ctx, message, timeout).await
 }
 
-async fn paginate_with_first_message(
+/// Paginate with the first message already created.
+pub async fn paginate_with_first_message(
     mut pager: impl Paginate,
     ctx: &Context,
     mut message: Message,