turns out UpdatePresence and PresenceUpdate are different events

src/gateway.rs

@@ -235,10 +235,10 @@ impl GatewayHandle {
     }
 
     /// Sends an update presence event to the gateway
-    pub async fn send_update_presence(&self, to_send: types::PresenceUpdate) {
+    pub async fn send_update_presence(&self, to_send: types::UpdatePresence) {
         let to_send_value = serde_json::to_value(&to_send).unwrap();
 
-        println!("GW: Sending Presence Update..");
+        println!("GW: Sending Update Presence..");
 
         self.send_json_event(GATEWAY_UPDATE_PRESENCE, to_send_value)
             .await;

src/types/events/presence.rs

@@ -1,14 +1,28 @@
-use crate::types::events::WebSocketEvent;
 use crate::types::interfaces::Activity;
-use crate::types::PublicUser;
+use crate::types::{events::WebSocketEvent, UserStatus};
+use crate::types::{PublicUser, Snowflake};
 use serde::{Deserialize, Serialize};
 
 #[derive(Debug, Deserialize, Serialize, Default, Clone)]
+/// Sent by the client to update its status and presence;
+/// See https://discord.com/developers/docs/topics/gateway-events#update-presence
+pub struct UpdatePresence {
+    /// unix time of when the client went idle, or none if client is not idle
+    pub since: Option<u128>,
+    /// the client's status (online, invisible, offline, dnd, idle..)
+    pub status: UserStatus,
+    pub activities: Vec<Activity>,
+    pub afk: bool,
+}
+
+#[derive(Debug, Deserialize, Serialize, Default, Clone)]
+/// Received to tell the client that a user updated their presence / status
 /// See https://discord.com/developers/docs/topics/gateway-events#presence-update-presence-update-event-fields
 pub struct PresenceUpdate {
     pub user: PublicUser,
-    pub guild_id: Option<String>,
+    #[serde(default)]
-    pub status: String,
+    pub guild_id: Option<Snowflake>,
+    pub status: UserStatus,
     pub activities: Vec<Activity>,
     pub client_status: ClientStatusObject,
 }