chore(monorepo): delta, january, quark

crates/delta/src/routes/users/find_mutual.rs

@@ -0,0 +1,46 @@
+use revolt_quark::models::User;
+use revolt_quark::{perms, Database, Error, Ref, Result};
+
+use rocket::serde::json::Json;
+use rocket::State;
+use serde::Serialize;
+
+/// # Mutual Friends and Servers Response
+#[derive(Serialize, JsonSchema)]
+pub struct MutualResponse {
+    /// Array of mutual user IDs that both users are friends with
+    users: Vec<String>,
+    /// Array of mutual server IDs that both users are in
+    servers: Vec<String>,
+}
+
+/// # Fetch Mutual Friends And Servers
+///
+/// Retrieve a list of mutual friends and servers with another user.
+#[openapi(tag = "Relationships")]
+#[get("/<target>/mutual")]
+pub async fn req(db: &State<Database>, user: User, target: Ref) -> Result<Json<MutualResponse>> {
+    if target.id == user.id {
+        return Err(Error::InvalidOperation);
+    }
+
+    if user.bot.is_some() {
+        return Err(Error::IsBot);
+    }
+
+    let target = target.as_user(db).await?;
+
+    if perms(&user)
+        .user(&target)
+        .calc_user(db)
+        .await
+        .get_view_profile()
+    {
+        Ok(Json(MutualResponse {
+            users: db.fetch_mutual_user_ids(&user.id, &target.id).await?,
+            servers: db.fetch_mutual_server_ids(&user.id, &target.id).await?,
+        }))
+    } else {
+        Err(Error::NotFound)
+    }
+}