Automatically insert mentions in comments

Fix some bug with mentions too

Fix #52

src/main.rs

@@ -69,6 +69,7 @@ fn main() {
             routes::blogs::create,
 
             routes::comments::new,
+            routes::comments::new_response,
             routes::comments::new_auth,
             routes::comments::create,
             routes::comments::create_response,

src/models/comments.rs

@@ -75,6 +75,11 @@ impl Comment {
     pub fn to_json(&self, conn: &PgConnection) -> serde_json::Value {
         let mut json = serde_json::to_value(self).unwrap();
         json["author"] = self.get_author(conn).to_json(conn);
+        let mentions = Mention::list_for_comment(conn, self.id).into_iter()
+            .map(|m| m.get_mentioned(conn).map(|u| u.get_fqn(conn)).unwrap_or(String::new()))
+            .collect::<Vec<String>>();
+        println!("{:?}", mentions);
+        json["mentions"] = serde_json::to_value(mentions).unwrap();
         json
     }
 
@@ -88,15 +93,6 @@ impl FromActivity<Note> for Comment {
         let previous_url = note.object_props.in_reply_to.clone().unwrap().as_str().unwrap().to_string();
         let previous_comment = Comment::find_by_ap_url(conn, previous_url.clone());
 
-        // save mentions
-        if let Some(serde_json::Value::Array(tags)) = note.object_props.tag.clone() {
-            for tag in tags.into_iter() {
-                serde_json::from_value::<link::Mention>(tag)
-                    .map(|m| Mention::from_activity(conn, m, Id::new(note.clone().object_props.clone().url_string().unwrap_or(String::from("")))))
-                    .ok();
-            }
-        }
-
         let comm = Comment::insert(conn, NewComment {
             content: SafeString::new(&note.object_props.content_string().unwrap()),
             spoiler_text: note.object_props.summary_string().unwrap_or(String::from("")),
@@ -108,6 +104,16 @@ impl FromActivity<Note> for Comment {
             author_id: User::from_url(conn, actor.clone().into()).unwrap().id,
             sensitive: false // "sensitive" is not a standard property, we need to think about how to support it with the activitypub crate
         });
+
+        // save mentions
+        if let Some(serde_json::Value::Array(tags)) = note.object_props.tag.clone() {
+            for tag in tags.into_iter() {
+                serde_json::from_value::<link::Mention>(tag)
+                    .map(|m| Mention::from_activity(conn, m, comm.id, false))
+                    .ok();
+            }
+        }
+
         comm.notify(conn);
         comm
     }

src/models/mentions.rs

@@ -1,7 +1,7 @@
 use activitypub::link;
 use diesel::{self, PgConnection, QueryDsl, RunQueryDsl, ExpressionMethods};
 
-use activity_pub::{Id, inbox::Notify};
+use activity_pub::inbox::Notify;
 use models::{
     comments::Comment,
     notifications::*,
@@ -10,13 +10,13 @@ use models::{
 };
 use schema::mentions;
 
-#[derive(Queryable, Identifiable)]
+#[derive(Queryable, Identifiable, Serialize, Deserialize)]
 pub struct Mention {
     pub id: i32,
     pub mentioned_id: i32,
     pub post_id: Option<i32>,
     pub comment_id: Option<i32>,
-    pub ap_url: String
+    pub ap_url: String // TODO: remove, since mentions don't have an AP URL actually, this field was added by mistake
 }
 
 #[derive(Insertable)]
@@ -34,6 +34,7 @@ impl Mention {
     find_by!(mentions, find_by_ap_url, ap_url as String);
     list_by!(mentions, list_for_user, mentioned_id as i32);
     list_by!(mentions, list_for_post, post_id as i32);
+    list_by!(mentions, list_for_comment, comment_id as i32);
 
     pub fn get_mentioned(&self, conn: &PgConnection) -> Option<User> {
         User::get(conn, self.mentioned_id)
@@ -44,7 +45,7 @@ impl Mention {
     }
 
     pub fn get_comment(&self, conn: &PgConnection) -> Option<Comment> {
-        self.post_id.and_then(|id| Comment::get(conn, id))
+        self.comment_id.and_then(|id| Comment::get(conn, id))
     }
 
     pub fn build_activity(conn: &PgConnection, ment: String) -> link::Mention {
@@ -63,11 +64,12 @@ impl Mention {
         mention
     }
 
-    pub fn from_activity(conn: &PgConnection, ment: link::Mention, inside: Id) -> Option<Self> {
+    pub fn from_activity(conn: &PgConnection, ment: link::Mention, inside: i32, in_post: bool) -> Option<Self> {
         let ap_url = ment.link_props.href_string().unwrap();
         let mentioned = User::find_by_ap_url(conn, ap_url).unwrap();
 
-        if let Some(post) = Post::find_by_ap_url(conn, inside.clone().into()) {
+        if in_post {
+            Post::get(conn, inside.clone().into()).map(|post| {
                 let res = Mention::insert(conn, NewMention {
                     mentioned_id: mentioned.id,
                     post_id: Some(post.id),
@@ -75,9 +77,10 @@ impl Mention {
                     ap_url: ment.link_props.href_string().unwrap_or(String::new())
                 });
                 res.notify(conn);
-            Some(res)
+                res
+            })
         } else {
-            if let Some(comment) = Comment::find_by_ap_url(conn, inside.into()) {
+            Comment::get(conn, inside.into()).map(|comment| {
                 let res = Mention::insert(conn, NewMention {
                     mentioned_id: mentioned.id,
                     post_id: None,
@@ -85,10 +88,8 @@ impl Mention {
                     ap_url: ment.link_props.href_string().unwrap_or(String::new())
                 });
                 res.notify(conn);
-                Some(res)
+                res
-            } else {
+            })
-                None
-            }
         }
     }
 }
@@ -97,7 +98,7 @@ impl Notify for Mention {
     fn notify(&self, conn: &PgConnection) {
         let author = self.get_comment(conn)
             .map(|c| c.get_author(conn).display_name.clone())
-            .unwrap_or(self.get_post(conn).unwrap().get_authors(conn)[0].display_name.clone());
+            .unwrap_or_else(|| self.get_post(conn).unwrap().get_authors(conn)[0].display_name.clone());
 
         self.get_mentioned(conn).map(|m| {
             Notification::insert(conn, NewNotification {

src/models/posts.rs

@@ -187,16 +187,7 @@ impl Post {
 
 impl FromActivity<Article> for Post {
     fn from_activity(conn: &PgConnection, article: Article, _actor: Id) -> Post {
-        // save mentions
+        let post = Post::insert(conn, NewPost {
-        if let Some(serde_json::Value::Array(tags)) = article.object_props.tag.clone() {
-            for tag in tags.into_iter() {
-                serde_json::from_value::<link::Mention>(tag)
-                    .map(|m| Mention::from_activity(conn, m, Id::new(article.clone().object_props.clone().url_string().unwrap_or(String::from("")))))
-                    .ok();
-            }
-        }
-
-        Post::insert(conn, NewPost {
             blog_id: 0, // TODO
             slug: String::from(""), // TODO
             title: article.object_props.name_string().unwrap(),
@@ -204,7 +195,17 @@ impl FromActivity<Article> for Post {
             published: true,
             license: String::from("CC-0"),
             ap_url: article.object_props.url_string().unwrap_or(String::from(""))
-        })
+        });
+
+        // save mentions
+        if let Some(serde_json::Value::Array(tags)) = article.object_props.tag.clone() {
+            for tag in tags.into_iter() {
+                serde_json::from_value::<link::Mention>(tag)
+                    .map(|m| Mention::from_activity(conn, m, post.id, true))
+                    .ok();
+            }
+        }
+        post
     }
 }
 

src/routes/comments.rs

@@ -19,17 +19,25 @@ use utils;
 
 #[get("/~/<blog>/<slug>/comment")]
 fn new(blog: String, slug: String, user: User, conn: DbConn) -> Template {
-    may_fail!(Blog::find_by_fqn(&*conn, blog), "Couldn't find this blog", |blog| {
+    new_response(blog, slug, None, user, conn)
+}
+
+// See: https://github.com/SergioBenitez/Rocket/pull/454
+#[get("/~/<blog_name>/<slug>/comment?<query>")]
+fn new_response(blog_name: String, slug: String, query: Option<CommentQuery>, user: User, conn: DbConn) -> Template {
+    may_fail!(Blog::find_by_fqn(&*conn, blog_name), "Couldn't find this blog", |blog| {
         may_fail!(Post::find_by_slug(&*conn, slug, blog.id), "Couldn't find this post", |post| {
             Template::render("comments/new", json!({
                 "post": post,
-                "account": user
+                "account": user,
+                "previous": query.and_then(|q| q.responding_to.map(|r| Comment::get(&*conn, r).expect("Error retrieving previous comment").to_json(&*conn))),
+                "user_fqn": user.get_fqn(&*conn)
             }))
         })
     })
 }
 
-#[get("/~/<blog>/<slug>/comment", rank=2)]
+#[get("/~/<blog>/<slug>/comment", rank = 2)]
 fn new_auth(blog: String, slug: String) -> Flash<Redirect>{
     utils::requires_login("You need to be logged in order to post a comment", uri!(new: blog = blog, slug = slug))
 }

src/routes/posts.rs

@@ -4,7 +4,7 @@ use rocket::response::{Redirect, Flash};
 use rocket_contrib::Template;
 use serde_json;
 
-use activity_pub::{broadcast, context, activity_pub, ActivityPub, Id};
+use activity_pub::{broadcast, context, activity_pub, ActivityPub};
 use db_conn::DbConn;
 use models::{
     blogs::*,
@@ -106,7 +106,7 @@ fn create(blog_name: String, data: Form<NewPostForm>, user: User, conn: DbConn)
             });
 
             for m in mentions.into_iter() {
-                Mention::from_activity(&*conn, Mention::build_activity(&*conn, m), Id::new(post.compute_id(&*conn)));
+                Mention::from_activity(&*conn, Mention::build_activity(&*conn, m), post.id, true);
             }
 
             let act = post.create_activity(&*conn);

templates/comments/new.html.tera

@@ -8,7 +8,8 @@
 <h1>{{ 'Comment "{{ post }}"' | _(post=post.title) }}</h1>
 <form method="post">
     <label for="content">{{ "Content" | _ }}</label>
-    <textarea id="content" name="content"></textarea>
+    {# Ugly, but we don't have the choice if we don't want weird paddings #}
+    <textarea id="content" name="content">{% filter trim %}{% if previous %}{% if previous.author.fqn != user_fqn %}@{{ previous.author.fqn }} {% endif %}{% for mention in previous.mentions %}{% if mention != user_fqn %}@{{ mention }} {% endif %}{% endfor %}{% endif %}{% endfilter %}</textarea>
     <input type="submit" value="{{ "Submit comment" | _ }}" />
 </form>
 {% endblock content %}