feat(user dms): open saved messages channel

src/routes/users/open_dm.rs

@@ -9,11 +9,29 @@ use ulid::Ulid;
 /// # Open Direct Message
 ///
 /// Open a DM with another user.
+///
+/// If the target is oneself, a saved messages channel is returned.
 #[openapi(tag = "Direct Messaging")]
 #[get("/<target>/dm")]
 pub async fn req(db: &State<Database>, user: User, target: Ref) -> Result<Json<Channel>> {
     let target = target.as_user(db).await?;
 
+    // If the target is oneself, open saved messages.
+    if target.id == user.id {
+        return if let Ok(channel) = db.find_direct_message_channel(&user.id, &target.id).await {
+            Ok(Json(channel))
+        } else {
+            let new_channel = Channel::SavedMessages {
+                id: Ulid::new().to_string(),
+                user: user.id,
+            };
+
+            new_channel.create(db).await?;
+            Ok(Json(new_channel))
+        };
+    }
+
+    // Otherwise try to find or create a DM.
     if let Ok(channel) = db.find_direct_message_channel(&user.id, &target.id).await {
         Ok(Json(channel))
     } else if perms(&user)
@@ -25,7 +43,7 @@ pub async fn req(db: &State<Database>, user: User, target: Ref) -> Result<Json<C
         let new_channel = Channel::DirectMessage {
             id: Ulid::new().to_string(),
             active: false,
-            recipients: vec![user.id.clone(), target.id.clone()],
+            recipients: vec![user.id, target.id],
             last_message_id: None,
         };