From eea3d08e1fabed8e336bd284daa144aa21f9b1b3 Mon Sep 17 00:00:00 2001
From: trisua <tri@swmff.org>
Date: Thu, 3 Apr 2025 12:43:36 -0400
Subject: [PATCH] add: pinned posts

---
 crates/app/src/langs/en-US.toml               |   1 +
 .../app/src/public/html/communities/feed.html |  16 +-
 .../app/src/public/html/communities/post.html |  87 +++++++-
 .../src/public/html/communities/settings.html |   2 +-
 crates/app/src/public/html/components.html    |   7 +-
 crates/app/src/public/js/atto.js              |   7 +-
 crates/app/src/routes/pages/communities.rs    |  50 ++++-
 crates/core/src/database/posts.rs             | 188 ++++++++++++++----
 crates/core/src/model/communities.rs          |  20 +-
 .../core/src/model/communities_permissions.rs |   1 +
 10 files changed, 324 insertions(+), 55 deletions(-)

diff --git a/crates/app/src/langs/en-US.toml b/crates/app/src/langs/en-US.toml
index c6cf324..52a1c6a 100644
--- a/crates/app/src/langs/en-US.toml
+++ b/crates/app/src/langs/en-US.toml
@@ -70,6 +70,7 @@ version = "1.0.0"
 "communities:label.delete_community" = "Delete community"
 "communities:label.change_title" = "Change title"
 "communities:label.new_title" = "New title"
+"communities:label.pinned" = "Pinned"
 
 "notifs:action.mark_as_read" = "Mark as read"
 "notifs:action.mark_as_unread" = "Mark as unread"
diff --git a/crates/app/src/public/html/communities/feed.html b/crates/app/src/public/html/communities/feed.html
index 7ee80da..e2141d9 100644
--- a/crates/app/src/public/html/communities/feed.html
+++ b/crates/app/src/public/html/communities/feed.html
@@ -31,6 +31,20 @@
             </button>
         </form>
     </div>
+    {% endif %} {% if pinned|length != 0 %}
+    <div class="card-nest">
+        <div class="card small flex gap-2 items-center">
+            {{ icon "pin" }}
+            <span>{{ text "communities:label.pinned" }}</span>
+        </div>
+
+        <div class="card flex flex-col gap-4">
+            <!-- prettier-ignore -->
+            {% for post in pinned %}
+                {{ components::post(post=post[0], owner=post[1], secondary=true, show_community=false, can_manage_post=can_manage_posts) }}
+            {% endfor %}
+        </div>
+    </div>
     {% endif %}
 
     <div class="card-nest">
@@ -42,7 +56,7 @@
         <div class="card flex flex-col gap-4">
             <!-- prettier-ignore -->
             {% for post in feed %}
-                {{ components::post(post=post[0], owner=post[1], secondary=true, show_community=false) }}
+                {{ components::post(post=post[0], owner=post[1], secondary=true, show_community=false, can_manage_post=can_manage_posts) }}
             {% endfor %}
 
             {{ components::pagination(page=page, items=feed|length) }}
diff --git a/crates/app/src/public/html/communities/post.html b/crates/app/src/public/html/communities/post.html
index e406520..b7baf07 100644
--- a/crates/app/src/public/html/communities/post.html
+++ b/crates/app/src/public/html/communities/post.html
@@ -8,7 +8,8 @@
         <span>{{ text "communities:action.continue_thread" }}</span>
     </a>
     {% endif %} {{ components::post(post=post, owner=owner, community=community,
-    show_community=true) }} {% if user %}
+    show_community=true, can_manage_post=can_manage_posts) }} {% if user and
+    post.context.comments_enabled %}
     <div class="card-nest">
         <div class="card small">
             <b>{{ text "communities:label.create_reply" }}</b>
@@ -38,9 +39,91 @@
             </button>
         </form>
     </div>
+    {% endif %} {% if user and user.id == post.owner or can_manage_posts %}
+    <div class="pillmenu">
+        <a href="#/replies" data-tab-button="replies" class="active">
+            {{ icon "newspaper" }}
+            <span>{{ text "communities:label.replies" }}</span>
+        </a>
+
+        <a href="#/configure" data-tab-button="configure">
+            {{ icon "settings" }}
+            <span>{{ text "communities:action.configure" }}</span>
+        </a>
+    </div>
+
+    <div class="flex flex-col gap-2 hidden" data-tab="configure">
+        <div class="card-nest w-full">
+            <div class="card small flex items-center gap-2">
+                {{ icon "settings" }}
+                <span>{{ text "communities:action.configure" }}</span>
+            </div>
+
+            <div
+                class="card tertiary flex flex-col gap-4"
+                id="post_context"
+            ></div>
+        </div>
+
+        <button onclick="save_context()">
+            {{ icon "check" }}
+            <span>{{ text "general:action.save" }}</span>
+        </button>
+
+        <script>
+            setTimeout(() => {
+                const ui = ns("ui");
+                const element = document.getElementById("post_context");
+                const settings = JSON.parse("{{ post_context_serde|safe }}");
+
+                globalThis.save_context = () => {
+                    fetch("/api/v1/posts/{{ post.id }}/context", {
+                        method: "POST",
+                        headers: {
+                            "Content-Type": "application/json",
+                        },
+                        body: JSON.stringify({
+                            context: settings,
+                        }),
+                    })
+                        .then((res) => res.json())
+                        .then((res) => {
+                            trigger("atto::toast", [
+                                res.ok ? "success" : "error",
+                                res.message,
+                            ]);
+                        });
+                };
+
+                ui.refresh_container(element, []);
+
+                const can_manage_pins = "{{ can_manage_pins }}" === "true";
+                const settings_fields = [
+                    [
+                        [
+                            "comments_enabled",
+                            "Allow people to comment on your post",
+                        ],
+                        "{{ post.context.comments_enabled }}",
+                        "checkbox",
+                    ],
+                ];
+
+                if (can_manage_pins) {
+                    settings_fields.push([
+                        ["is_pinned", "Pinned to community wall"],
+                        "{{ post.context.is_pinned }}",
+                        "checkbox",
+                    ]);
+                }
+
+                ui.generate_settings_ui(element, settings_fields, settings);
+            }, 250);
+        </script>
+    </div>
     {% endif %}
 
-    <div class="card-nest w-full">
+    <div class="card-nest w-full" data-tab="replies">
         <div class="card small flex items-center gap-2">
             {{ icon "newspaper" }}
             <span>{{ text "communities:label.replies" }}</span>
diff --git a/crates/app/src/public/html/communities/settings.html b/crates/app/src/public/html/communities/settings.html
index 7daadb2..16973b5 100644
--- a/crates/app/src/public/html/communities/settings.html
+++ b/crates/app/src/public/html/communities/settings.html
@@ -346,7 +346,7 @@
                             role: (new_role) => {
                                 return update_user_role(
                                     e.target.uid.value,
-                                    user_role,
+                                    new_role,
                                 );
                             },
                         },
diff --git a/crates/app/src/public/html/components.html b/crates/app/src/public/html/components.html
index f7ae592..251a337 100644
--- a/crates/app/src/public/html/components.html
+++ b/crates/app/src/public/html/components.html
@@ -105,7 +105,8 @@ community %}
     {% endif %}
 </div>
 {%- endmacro %} {% macro post(post, owner, secondary=false, community=false,
-show_community=true) -%} {% if community and show_community %}
+show_community=true, can_manage_post=false) -%} {% if community and
+show_community %}
 <div class="card-nest">
     <div class="card small">
         <a
@@ -115,6 +116,8 @@ show_community=true) -%} {% if community and show_community %}
             {{ components::community_avatar(id=post.community,
             community=community) }}
             <b>{{ community.title }}</b>
+
+            {% if post.context.is_pinned %} {{ icon "pin" }} {% endif %}
         </a>
     </div>
     {% endif %}
@@ -197,7 +200,7 @@ show_community=true) -%} {% if community and show_community %}
                             <span>{{ text "general:action.report" }}</span>
                         </button>
                         {% endif %} {% if (user.id == post.owner) or is_helper
-                        %}
+                        or can_manage_post %}
                         <b class="title">{{ text "general:action.manage" }}</b>
                         <button
                             class="red"
diff --git a/crates/app/src/public/js/atto.js b/crates/app/src/public/js/atto.js
index f519e2c..c1bc968 100644
--- a/crates/app/src/public/js/atto.js
+++ b/crates/app/src/public/js/atto.js
@@ -736,12 +736,17 @@ media_theme_pref();
     const self = reg_ns("ui");
 
     self.define("refresh_container", (_, element, keep) => {
+        if (keep.length === 0) {
+            element.innerHTML = "";
+            return;
+        }
+
         for (const child of element.children) {
             if (keep.includes(child.getAttribute("ui_ident"))) {
                 continue;
             }
 
-            child.remove();
+            child.outerHTML = "";
         }
     });
 
diff --git a/crates/app/src/routes/pages/communities.rs b/crates/app/src/routes/pages/communities.rs
index 064f361..1ca61a9 100644
--- a/crates/app/src/routes/pages/communities.rs
+++ b/crates/app/src/routes/pages/communities.rs
@@ -18,6 +18,7 @@ use tetratto_core::model::{
 macro_rules! check_permissions {
     ($community:ident, $jar:ident, $data:ident, $user:ident) => {{
         let mut is_member: bool = false;
+        let mut can_manage_pins: bool = false;
 
         if let Some(ref ua) = $user {
             if let Ok(membership) = $data
@@ -32,18 +33,24 @@ macro_rules! check_permissions {
                 } else if membership.role.check_member() {
                     is_member = true;
                 }
+
+                if membership.role.check(
+                    tetratto_core::model::communities_permissions::CommunityPermission::MANAGE_PINS,
+                ) {
+                    can_manage_pins = true;
+                }
             }
         }
 
         match $community.read_access {
             CommunityReadAccess::Joined => {
                 if !is_member {
-                    false
+                    (false, can_manage_pins)
                 } else {
-                    true
+                    (true, can_manage_pins)
                 }
             }
-            _ => true,
+            _ => (true, can_manage_pins),
         }
     }};
 }
@@ -87,7 +94,13 @@ macro_rules! community_context_bools {
             false
         };
 
-        (is_owner, is_joined, is_pending, can_post)
+        let can_manage_posts = if let Some(ref membership) = membership {
+            membership.role.check(CommunityPermission::MANAGE_POSTS)
+        } else {
+            false
+        };
+
+        (is_owner, is_joined, is_pending, can_post, can_manage_posts)
     }};
 }
 
@@ -141,6 +154,7 @@ pub fn community_context(
     is_pending: bool,
     can_post: bool,
     can_read: bool,
+    can_manage_posts: bool,
 ) {
     context.insert("community", &community);
     context.insert("is_owner", &is_owner);
@@ -148,6 +162,7 @@ pub fn community_context(
     context.insert("is_pending", &is_pending);
     context.insert("can_post", &can_post);
     context.insert("can_read", &can_read);
+    context.insert("can_manage_posts", &can_manage_posts);
 }
 
 /// `/community/{title}`
@@ -179,7 +194,7 @@ pub async fn feed_request(
     }
 
     // check permissions
-    let can_read = check_permissions!(community, jar, data, user);
+    let (can_read, _) = check_permissions!(community, jar, data, user);
 
     // ...
     let feed = match data
@@ -194,14 +209,23 @@ pub async fn feed_request(
         Err(e) => return Err(Html(render_error(e, &jar, &data, &user).await)),
     };
 
+    let pinned = match data.0.get_pinned_posts_by_community(community.id).await {
+        Ok(p) => match data.0.fill_posts(p).await {
+            Ok(p) => p,
+            Err(e) => return Err(Html(render_error(e, &jar, &data, &user).await)),
+        },
+        Err(e) => return Err(Html(render_error(e, &jar, &data, &user).await)),
+    };
+
     // init context
     let lang = get_lang!(jar, data.0);
     let mut context = initial_context(&data.0.0, lang, &user).await;
 
-    let (is_owner, is_joined, is_pending, can_post) =
+    let (is_owner, is_joined, is_pending, can_post, can_manage_posts) =
         community_context_bools!(data, user, community);
 
     context.insert("feed", &feed);
+    context.insert("pinned", &pinned);
     context.insert("page", &props.page);
     community_context(
         &mut context,
@@ -211,6 +235,7 @@ pub async fn feed_request(
         is_pending,
         can_post,
         can_read,
+        can_manage_posts,
     );
 
     // return
@@ -287,7 +312,7 @@ pub async fn post_request(
     };
 
     // check permissions
-    let can_read = check_permissions!(community, jar, data, user);
+    let (can_read, can_manage_pins) = check_permissions!(community, jar, data, user);
 
     // ...
     let feed = match data.0.get_post_comments(post.id, 12, props.page).await {
@@ -302,7 +327,7 @@ pub async fn post_request(
     let lang = get_lang!(jar, data.0);
     let mut context = initial_context(&data.0.0, lang, &user).await;
 
-    let (is_owner, is_joined, is_pending, can_post) =
+    let (is_owner, is_joined, is_pending, can_post, can_manage_posts) =
         community_context_bools!(data, user, community);
 
     context.insert("post", &post);
@@ -316,6 +341,14 @@ pub async fn post_request(
             .await
             .unwrap_or(User::deleted()),
     );
+    context.insert(
+        "post_context_serde",
+        &serde_json::to_string(&post.context)
+            .unwrap()
+            .replace("\"", "\\\""),
+    );
+    context.insert("can_manage_pins", &can_manage_pins);
+
     community_context(
         &mut context,
         &community,
@@ -324,6 +357,7 @@ pub async fn post_request(
         is_pending,
         can_post,
         can_read,
+        can_manage_posts,
     );
 
     // return
diff --git a/crates/core/src/database/posts.rs b/crates/core/src/database/posts.rs
index d86ad47..a9abe9b 100644
--- a/crates/core/src/database/posts.rs
+++ b/crates/core/src/database/posts.rs
@@ -3,6 +3,8 @@ use std::collections::HashMap;
 use super::*;
 use crate::cache::Cache;
 use crate::model::auth::Notification;
+use crate::model::communities_permissions::CommunityPermission;
+use crate::model::moderation::AuditLogEntry;
 use crate::model::{
     Error, Result,
     auth::User,
@@ -84,9 +86,17 @@ impl DataManager {
     pub async fn fill_posts(&self, posts: Vec<Post>) -> Result<Vec<(Post, User)>> {
         let mut out: Vec<(Post, User)> = Vec::new();
 
+        let mut users: HashMap<usize, User> = HashMap::new();
         for post in posts {
             let owner = post.owner.clone();
-            out.push((post, self.get_user_by_id(owner).await?));
+
+            if let Some(user) = users.get(&owner) {
+                out.push((post, user.clone()));
+            } else {
+                let user = self.get_user_by_id(owner).await?;
+                users.insert(owner, user.clone());
+                out.push((post, user));
+            }
         }
 
         Ok(out)
@@ -99,14 +109,20 @@ impl DataManager {
     ) -> Result<Vec<(Post, User, Community)>> {
         let mut out: Vec<(Post, User, Community)> = Vec::new();
 
+        let mut seen_before: HashMap<(usize, usize), (User, Community)> = HashMap::new();
         for post in posts {
             let owner = post.owner.clone();
             let community = post.community.clone();
-            out.push((
-                post,
-                self.get_user_by_id(owner).await?,
-                self.get_community_by_id(community).await?,
-            ));
+
+            if let Some((user, community)) = seen_before.get(&(owner, community)) {
+                out.push((post, user.clone(), community.to_owned()));
+            } else {
+                let user = self.get_user_by_id(owner).await?;
+                let community = self.get_community_by_id(community).await?;
+
+                seen_before.insert((owner, community.id), (user.clone(), community.clone()));
+                out.push((post, user, community));
+            }
         }
 
         Ok(out)
@@ -182,6 +198,30 @@ impl DataManager {
         Ok(res.unwrap())
     }
 
+    /// Get all pinned posts from the given community (from most recent).
+    ///
+    /// # Arguments
+    /// * `id` - the ID of the community the requested posts belong to
+    pub async fn get_pinned_posts_by_community(&self, id: usize) -> Result<Vec<Post>> {
+        let conn = match self.connect().await {
+            Ok(c) => c,
+            Err(e) => return Err(Error::DatabaseConnection(e.to_string())),
+        };
+
+        let res = query_rows!(
+            &conn,
+            "SELECT * FROM posts WHERE community = $1 AND context LIKE '%\"is_pinned\":true%' ORDER BY created DESC",
+            &[&(id as isize),],
+            |x| { Self::get_post_from_row(x) }
+        );
+
+        if res.is_err() {
+            return Err(Error::GeneralNotFound("post".to_string()));
+        }
+
+        Ok(res.unwrap())
+    }
+
     /// Get posts from all communities, sorted by likes.
     ///
     /// # Arguments
@@ -315,6 +355,19 @@ impl DataManager {
             }
         }
 
+        // check if the post we're replying to allows commments
+        let replying_to = if let Some(id) = data.replying_to {
+            Some(self.get_post_by_id(id).await?)
+        } else {
+            None
+        };
+
+        if let Some(ref rt) = replying_to {
+            if !rt.context.comments_enabled {
+                return Err(Error::MiscError("Post has comments disabled".to_string()));
+            }
+        }
+
         // send mention notifications
         let mut already_notified: HashMap<String, User> = HashMap::new();
         for username in User::parse_mentions(&data.content) {
@@ -343,31 +396,6 @@ impl DataManager {
             );
         }
 
-        // incr comment count
-        if let Some(id) = data.replying_to {
-            self.incr_post_comments(id).await.unwrap();
-
-            // send notification
-            let rt = self.get_post_by_id(id).await?;
-
-            if data.owner != rt.owner {
-                let owner = self.get_user_by_id(rt.owner).await?;
-                self.create_notification(Notification::new(
-                    "Your post has received a new comment!".to_string(),
-                    format!(
-                        "[@{}](/api/v1/auth/profile/find/{}) has commented on your [post](/post/{}).",
-                        owner.username, owner.id, rt.id
-                    ),
-                    rt.owner,
-                ))
-                .await?;
-
-                if rt.context.comments_enabled == false {
-                    return Err(Error::NotAllowed);
-                }
-            }
-        }
-
         // ...
         let conn = match self.connect().await {
             Ok(c) => c,
@@ -401,6 +429,29 @@ impl DataManager {
             return Err(Error::DatabaseError(e.to_string()));
         }
 
+        // incr comment count and send notification
+        if let Some(rt) = replying_to {
+            self.incr_post_comments(rt.id).await.unwrap();
+
+            // send notification
+            if data.owner != rt.owner {
+                let owner = self.get_user_by_id(rt.owner).await?;
+                self.create_notification(Notification::new(
+                    "Your post has received a new comment!".to_string(),
+                    format!(
+                        "[@{}](/api/v1/auth/profile/find/{}) has commented on your [post](/post/{}).",
+                        owner.username, owner.id, rt.id
+                    ),
+                    rt.owner,
+                ))
+                .await?;
+
+                if rt.context.comments_enabled == false {
+                    return Err(Error::NotAllowed);
+                }
+            }
+        }
+
         // return
         Ok(data.id)
     }
@@ -408,11 +459,19 @@ impl DataManager {
     pub async fn delete_post(&self, id: usize, user: User) -> Result<()> {
         let y = self.get_post_by_id(id).await?;
 
-        if user.id != y.owner {
+        let user_membership = self
+            .get_membership_by_owner_community(user.id, y.community)
+            .await?;
+
+        if (user.id != y.owner)
+            && !user_membership
+                .role
+                .check(CommunityPermission::MANAGE_POSTS)
+        {
             if !user.permissions.check(FinePermission::MANAGE_POSTS) {
                 return Err(Error::NotAllowed);
             } else {
-                self.create_audit_log_entry(crate::model::moderation::AuditLogEntry::new(
+                self.create_audit_log_entry(AuditLogEntry::new(
                     user.id,
                     format!("invoked `delete_post` with x value `{id}`"),
                 ))
@@ -442,8 +501,69 @@ impl DataManager {
         Ok(())
     }
 
+    pub async fn update_post_context(&self, id: usize, user: User, x: PostContext) -> Result<()> {
+        let y = self.get_post_by_id(id).await?;
+
+        let user_membership = self
+            .get_membership_by_owner_community(user.id, y.community)
+            .await?;
+
+        if (user.id != y.owner)
+            && !user_membership
+                .role
+                .check(CommunityPermission::MANAGE_POSTS)
+        {
+            if !user.permissions.check(FinePermission::MANAGE_POSTS) {
+                return Err(Error::NotAllowed);
+            } else {
+                self.create_audit_log_entry(AuditLogEntry::new(
+                    user.id,
+                    format!("invoked `update_post_context` with x value `{id}`"),
+                ))
+                .await?
+            }
+        }
+
+        // check if we can manage pins
+        if x.is_pinned != y.context.is_pinned {
+            if !user_membership.role.check(CommunityPermission::MANAGE_PINS) {
+                // lacking this permission is overtaken by having the MANAGE_POSTS
+                // global permission
+                if !user.permissions.check(FinePermission::MANAGE_POSTS) {
+                    return Err(Error::NotAllowed);
+                } else {
+                    self.create_audit_log_entry(AuditLogEntry::new(
+                        user.id,
+                        format!("invoked `update_post_context(pinned)` with x value `{id}`"),
+                    ))
+                    .await?
+                }
+            }
+        }
+
+        // ...
+        let conn = match self.connect().await {
+            Ok(c) => c,
+            Err(e) => return Err(Error::DatabaseConnection(e.to_string())),
+        };
+
+        let res = execute!(
+            &conn,
+            "UPDATE posts SET context = $1 WHERE id = $2",
+            &[&serde_json::to_string(&x).unwrap(), &id.to_string()]
+        );
+
+        if let Err(e) = res {
+            return Err(Error::DatabaseError(e.to_string()));
+        }
+
+        self.2.remove(format!("atto.post:{}", id)).await;
+
+        // return
+        Ok(())
+    }
+
     auto_method!(update_post_content(String)@get_post_by_id:MANAGE_POSTS -> "UPDATE posts SET content = $1 WHERE id = $2" --cache-key-tmpl="atto.post:{}");
-    auto_method!(update_post_context(PostContext)@get_post_by_id:MANAGE_POSTS -> "UPDATE posts SET context = $1 WHERE id = $2" --serde --cache-key-tmpl="atto.post:{}");
 
     auto_method!(incr_post_likes() -> "UPDATE posts SET likes = likes + 1 WHERE id = $1" --cache-key-tmpl="atto.post:{}" --incr);
     auto_method!(incr_post_dislikes() -> "UPDATE posts SET dislikes = dislikes + 1 WHERE id = $1" --cache-key-tmpl="atto.post:{}" --incr);
diff --git a/crates/core/src/model/communities.rs b/crates/core/src/model/communities.rs
index 2d05006..27684c9 100644
--- a/crates/core/src/model/communities.rs
+++ b/crates/core/src/model/communities.rs
@@ -3,7 +3,7 @@ use tetratto_shared::{snow::AlmostSnowflake, unix_epoch_timestamp};
 
 use super::communities_permissions::CommunityPermission;
 
-#[derive(Serialize, Deserialize)]
+#[derive(Clone, Serialize, Deserialize)]
 pub struct Community {
     pub id: usize,
     pub created: usize,
@@ -70,7 +70,7 @@ impl Community {
     }
 }
 
-#[derive(Debug, Serialize, Deserialize)]
+#[derive(Clone, Debug, Serialize, Deserialize)]
 pub struct CommunityContext {
     pub display_name: String,
     pub description: String,
@@ -86,7 +86,7 @@ impl Default for CommunityContext {
 }
 
 /// Who can read a [`Community`].
-#[derive(Debug, Serialize, Deserialize, PartialEq, Eq)]
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq, Eq)]
 pub enum CommunityReadAccess {
     /// Everybody can view the community.
     Everybody,
@@ -101,7 +101,7 @@ impl Default for CommunityReadAccess {
 }
 
 /// Who can write to a [`Community`].
-#[derive(Debug, Serialize, Deserialize, PartialEq, Eq)]
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq, Eq)]
 pub enum CommunityWriteAccess {
     /// Everybody.
     Everybody,
@@ -120,7 +120,7 @@ impl Default for CommunityWriteAccess {
 }
 
 /// Who can join a [`Community`].
-#[derive(Debug, Serialize, Deserialize, PartialEq, Eq)]
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq, Eq)]
 pub enum CommunityJoinAccess {
     /// Joins are closed. Nobody can join the community.
     Nobody,
@@ -163,13 +163,21 @@ impl CommunityMembership {
 
 #[derive(Debug, Serialize, Deserialize)]
 pub struct PostContext {
+    #[serde(default = "default_comments_enabled")]
     pub comments_enabled: bool,
+    #[serde(default)]
+    pub is_pinned: bool,
+}
+
+fn default_comments_enabled() -> bool {
+    true
 }
 
 impl Default for PostContext {
     fn default() -> Self {
         Self {
-            comments_enabled: true,
+            comments_enabled: default_comments_enabled(),
+            is_pinned: false,
         }
     }
 }
diff --git a/crates/core/src/model/communities_permissions.rs b/crates/core/src/model/communities_permissions.rs
index 0fdc4e3..929dfdd 100644
--- a/crates/core/src/model/communities_permissions.rs
+++ b/crates/core/src/model/communities_permissions.rs
@@ -15,6 +15,7 @@ bitflags! {
         const MANAGE_ROLES = 1 << 4;
         const BANNED = 1 << 5;
         const REQUESTED = 1 << 6;
+        const MANAGE_PINS = 1 << 7;
 
         const _ = !0;
     }