feat: add message reactions + interactions object

crates/delta/src/routes/channels/message_react.rs

@@ -0,0 +1,29 @@
+use revolt_quark::{models::User, perms, Db, EmptyResponse, Permission, Ref, Result};
+
+/// # Add Reaction to Message
+///
+/// React to a given message.
+#[openapi(tag = "Interactions")]
+#[put("/<target>/messages/<msg>/reactions/<emoji>")]
+pub async fn react_message(
+    db: &Db,
+    user: User,
+    target: Ref,
+    msg: Ref,
+    emoji: Ref,
+) -> Result<EmptyResponse> {
+    let channel = target.as_channel(db).await?;
+    perms(&user)
+        .channel(&channel)
+        .throw_permission_and_view_channel(db, Permission::React)
+        .await?;
+
+    // Fetch relevant message
+    let message = msg.as_message_in(db, channel.id()).await?;
+
+    // Add the reaction
+    message
+        .add_reaction(db, &user, &emoji.id)
+        .await
+        .map(|_| EmptyResponse)
+}