feat: allow fetching channels with server

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

@@ -1,17 +1,65 @@
 use revolt_quark::{
-    models::{Server, User},
+    models::{Channel, Server, User},
     perms, Db, Ref, Result,
 };
 use rocket::serde::json::Json;
+use serde::{Deserialize, Serialize};
+
+/// # Query Parameters
+#[derive(Deserialize, JsonSchema, FromForm)]
+pub struct OptionsFetchServer {
+    /// Whether to include channels
+    include_channels: Option<bool>,
+}
+
+/// # Fetch server route response
+#[derive(Serialize, JsonSchema)]
+#[serde(untagged)]
+pub enum FetchServerResponse {
+    JustServer(Server),
+    ServerWithChannels {
+        #[serde(flatten)]
+        server: Server,
+        channels: Vec<Channel>,
+    },
+}
 
 /// # Fetch Server
 ///
 /// Fetch a server by its id.
 #[openapi(tag = "Server Information")]
-#[get("/<target>")]
+#[get("/<target>?<options..>")]
-pub async fn req(db: &Db, user: User, target: Ref) -> Result<Json<Server>> {
+pub async fn req(
+    db: &Db,
+    user: User,
+    target: Ref,
+    options: OptionsFetchServer,
+) -> Result<Json<FetchServerResponse>> {
     let server = target.as_server(db).await?;
-    perms(&user).server(&server).calc(db).await?;
+    let mut perms = perms(&user).server(&server);
+    perms.calc(db).await?;
 
-    Ok(Json(server))
+    if let Some(true) = options.include_channels {
+        let all_channels = db.fetch_channels(&server.channels).await?;
+        let mut visible_channels = vec![];
+
+        for channel in all_channels {
+            if perms
+                .clone()
+                .channel(&channel)
+                .calc(db)
+                .await?
+                .can_view_channel()
+            {
+                visible_channels.push(channel);
+            }
+        }
+
+        Ok(Json(FetchServerResponse::ServerWithChannels {
+            server,
+            channels: visible_channels,
+        }))
+    } else {
+        Ok(Json(FetchServerResponse::JustServer(server)))
+    }
 }