feat: add parent and update permission calculators

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

@@ -192,6 +192,7 @@ mod test {
                 d: ChannelPermission::ViewChannel as i64,
             }),
             last_message_id: None,
+            parent: None,
         };
         locked_channel
             .update(&harness.db, partial, vec![])

crates/delta/src/routes/servers/category_edit.rs

@@ -1,6 +1,6 @@
 use revolt_config::config;
 use revolt_database::{
-    util::{permissions::DatabasePermissionQuery, reference::Reference}, Category, Database, PartialCategory, Role, User
+    util::{permissions::DatabasePermissionQuery, reference::Reference}, Category, Channel, Database, PartialCategory, PartialChannel, Role, User
 };
 use revolt_models::v0::{self, DataEditCategory};
 use revolt_permissions::{calculate_server_permissions, ChannelPermission};
@@ -41,16 +41,34 @@ pub async fn edit(
 
     let DataEditCategory {
         title,
-        channels,
+        mut channels,
         remove
     } = data;
 
+    // remove the channels from any existing categories to avoid it having two
+    for category in server.categories.values_mut() {
+        category.channels.retain(|c| channels.as_ref().map_or(false, |cs| cs.contains(c)));
+    }
+
+    // only keep channels which exist in the server
+    if let Some(channels) = &mut channels {
+        channels.retain(|c| server.channels.contains(c));
+    }
+
+    // unset parent from all channels which are removed from the category
+    for channel_id in &category.channels {
+        if channels.as_ref().is_some_and(|cs| !cs.contains(channel_id)) {
+            db.update_channel(channel_id, &PartialChannel { parent: None, ..Default::default() }, Vec::new()).await?;
+        };
+    };
+
+    // update the category with the new values
     category.update(
         db,
         &mut server,
         PartialCategory {
             title,
-            channels,
+            channels: channels.clone(),
             ..Default::default()
         },
         remove
@@ -58,5 +76,16 @@ pub async fn edit(
             .unwrap_or_default()
     ).await?;
 
+    let channels = db.fetch_channels(&channels.unwrap_or_default()).await?;
+
+    // update all channels to have the parent set
+    for channel in channels {
+        if let Channel::TextChannel { ref parent, .. } | Channel::VoiceChannel { ref parent, .. } = channel {
+            if parent.as_ref() != Some(&category.id) {
+                db.update_channel(channel.id(), &PartialChannel { parent: Some(category.id.clone()), ..Default::default() }, Vec::new()).await?;
+            };
+        };
+    };
+
     Ok(Json(category.into()))
 }