Add API for propagating cursor locations (#61)

backend/sync_server/src/app_state/broadcasts.rs

@@ -1,57 +0,0 @@
-use std::{collections::HashMap, sync::Arc};
-
-use anyhow::Context;
-use tokio::sync::{Mutex, broadcast};
-
-use super::database::models::{DeviceId, DocumentVersionWithoutContent, VaultId};
-use crate::{config::server_config::ServerConfig, errors::server_error};
-
-#[derive(Debug, Clone)]
-pub struct Broadcasts {
-    max_clients_per_vault: usize,
-    tx: Arc<Mutex<HashMap<VaultId, broadcast::Sender<VaultUpdate>>>>,
-}
-
-#[derive(Debug, Clone)]
-pub struct VaultUpdate {
-    pub origin_device_id: Option<DeviceId>,
-    pub document: DocumentVersionWithoutContent,
-}
-
-impl Broadcasts {
-    pub fn new(server_config: &ServerConfig) -> Self {
-        Self {
-            max_clients_per_vault: server_config.max_clients_per_vault,
-            tx: Arc::new(Mutex::new(HashMap::new())),
-        }
-    }
-
-    pub async fn get_receiver(&self, vault: VaultId) -> broadcast::Receiver<VaultUpdate> {
-        let tx = self.get_or_create(vault).await;
-
-        tx.subscribe()
-    }
-
-    /// Sent a document update to all clients subscribed to the vault.
-    /// We ignore & log failures.
-    pub async fn send(&self, vault: VaultId, document: VaultUpdate) {
-        let tx = self.get_or_create(vault).await;
-
-        let result = tx
-            .send(document)
-            .context("Cannot broadcast update message to websocket listeners")
-            .map_err(server_error);
-
-        if result.is_err() {
-            log::debug!("Failed to send message: {result:?}");
-        }
-    }
-
-    async fn get_or_create(&self, vault: VaultId) -> broadcast::Sender<VaultUpdate> {
-        let mut tx = self.tx.lock().await;
-
-        tx.entry(vault)
-            .or_insert_with(|| broadcast::channel(self.max_clients_per_vault).0.clone())
-            .clone()
-    }
-}