feat(delta): rewrite channel / message fetch

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

@@ -1,26 +1,34 @@
-use revolt_quark::{
-    models::{Message, User},
-    perms, Db, Error, Permission, Ref, Result,
+use revolt_database::{
+    util::{permissions::DatabasePermissionQuery, reference::Reference},
+    Database, User,
 };
-
-use rocket::serde::json::Json;
+use revolt_models::v0;
+use revolt_permissions::{calculate_channel_permissions, ChannelPermission};
+use revolt_result::{create_error, Result};
+use rocket::{serde::json::Json, State};
 
 /// # Fetch Message
 ///
 /// Retrieves a message by its id.
 #[openapi(tag = "Messaging")]
 #[get("/<target>/messages/<msg>")]
-pub async fn req(db: &Db, user: User, target: Ref, msg: Ref) -> Result<Json<Message>> {
+pub async fn req(
+    db: &State<Database>,
+    user: User,
+    target: Reference,
+    msg: Reference,
+) -> Result<Json<v0::Message>> {
     let channel = target.as_channel(db).await?;
-    perms(&user)
-        .channel(&channel)
-        .throw_permission(db, Permission::ViewChannel)
-        .await?;
+
+    let mut query = DatabasePermissionQuery::new(db, &user).channel(&channel);
+    calculate_channel_permissions(&mut query)
+        .await
+        .throw_if_lacking_channel_permission(ChannelPermission::ViewChannel)?;
 
     let message = msg.as_message(db).await?;
-    if message.channel != channel.as_id() {
-        return Err(Error::NotFound);
+    if message.channel != channel.id() {
+        return Err(create_error!(NotFound));
     }
 
-    Ok(Json(message))
+    Ok(Json(message.into()))
 }