Improve notification management (#561)

* Don't notify for comment when mentioned

fix #505

* Don't save notification for remote users

fix #472

plume-models/src/comments.rs

@@ -15,7 +15,7 @@ use medias::Media;
 use mentions::Mention;
 use notifications::*;
 use plume_common::activity_pub::{
-    inbox::{AsObject, FromId},
+    inbox::{AsActor, AsObject, FromId},
     Id, IntoId, PUBLIC_VISIBILITY,
 };
 use plume_common::utils;
@@ -157,14 +157,20 @@ impl Comment {
 
     pub fn notify(&self, conn: &Connection) -> Result<()> {
         for author in self.get_post(conn)?.get_authors(conn)? {
-            Notification::insert(
-                conn,
-                NewNotification {
-                    kind: notification_kind::COMMENT.to_string(),
-                    object_id: self.id,
-                    user_id: author.id,
-                },
-            )?;
+            if Mention::list_for_comment(conn, self.id)?
+                .iter()
+                .all(|m| m.get_mentioned(conn).map(|u| u != author).unwrap_or(true))
+                && author.is_local()
+            {
+                Notification::insert(
+                    conn,
+                    NewNotification {
+                        kind: notification_kind::COMMENT.to_string(),
+                        object_id: self.id,
+                        user_id: author.id,
+                    },
+                )?;
+            }
         }
         Ok(())
     }