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use super::traits::StanzaHandler;
use crate::client::Client;
use crate::types::events::{Event, OfflineSyncPreview};
use async_trait::async_trait;
use futures::FutureExt;
use log::{debug, info, warn};
use std::sync::Arc;
use wacore::appstate::patch_decode::WAPatchName;
use wacore::iq::dirty::{DirtyBit, DirtyType};
/// Handler for `<ib>` (information broadcast) stanzas.
///
/// Processes various server notifications including:
/// - Dirty state notifications
/// - Edge routing information
/// - Offline sync previews and completion notifications
/// - Thread metadata
#[derive(Default)]
pub struct IbHandler;
#[cfg_attr(target_arch = "wasm32", async_trait(?Send))]
#[cfg_attr(not(target_arch = "wasm32"), async_trait)]
impl StanzaHandler for IbHandler {
fn tag(&self) -> &'static str {
"ib"
}
async fn handle(
&self,
client: Arc<Client>,
node: Arc<wacore_binary::OwnedNodeRef>,
_cancelled: &mut bool,
) -> bool {
handle_ib_impl(client, node.get()).await;
true
}
}
async fn handle_ib_impl(client: Arc<Client>, node: &wacore_binary::NodeRef<'_>) {
for child in node.children().unwrap_or_default() {
match child.tag.as_ref() {
"dirty" => {
let mut attrs = child.attrs();
let dirty_type_str = match attrs.optional_string("type") {
Some(t) => t.to_string(),
None => {
warn!("Dirty notification missing 'type' attribute");
continue;
}
};
let timestamp_str = attrs.optional_string("timestamp");
let bit = match DirtyBit::from_raw(&dirty_type_str, timestamp_str.as_deref()) {
Ok(b) => b,
Err(e) => {
warn!("Invalid dirty notification: {e}");
continue;
}
};
let needs_offline_wait = matches!(
bit.dirty_type,
DirtyType::Groups | DirtyType::NewsletterMetadata
);
let needs_resync = bit.dirty_type == DirtyType::SyncdAppState;
debug!(
"Received dirty state notification for type: '{dirty_type_str}'. Sending clean IQ."
);
let client_clone = client.clone();
// Groups/newsletter_metadata: wait for offline sync per WAWebHandleDirtyBits.
client
.runtime
.spawn(Box::pin(async move {
if needs_offline_wait {
client_clone.wait_for_offline_delivery_end().await;
}
if client_clone.is_shutting_down() {
return;
}
if let Err(e) = client_clone.clean_dirty_bits(bit).await
&& !client_clone.is_shutting_down()
{
warn!("Failed to send clean dirty bits IQ: {e:?}");
}
if needs_resync && !client_clone.is_shutting_down() {
info!("syncd_app_state dirty -- re-syncing all app state collections");
if let Err(e) = client_clone
.sync_collections_batched(vec![
WAPatchName::CriticalBlock,
WAPatchName::CriticalUnblockLow,
WAPatchName::RegularLow,
WAPatchName::RegularHigh,
WAPatchName::Regular,
])
.await
&& !client_clone.is_shutting_down()
{
warn!("App state re-sync after dirty notification failed: {e:?}");
}
}
}))
.detach();
}
"edge_routing" => {
// Edge routing info is used for optimized reconnection to WhatsApp servers.
// When present, it should be sent as a pre-intro before the Noise handshake.
// Format on wire: ED (2 bytes) + length (3 bytes BE) + routing_data + WA header
if let Some(routing_info_node) = child.get_optional_child("routing_info")
&& let Some(routing_bytes) = routing_info_node.content_bytes()
&& !routing_bytes.is_empty()
{
debug!(
"Received edge routing info ({} bytes), storing for reconnection",
routing_bytes.len()
);
let routing_bytes = routing_bytes.to_vec();
let client_clone = client.clone();
client
.runtime
.spawn(Box::pin(async move {
client_clone
.persistence_manager
.modify_device(|device| {
device.edge_routing_info = Some(routing_bytes);
})
.await;
}))
.detach();
}
}
"offline_preview" => {
let mut attrs = child.attrs();
let total = attrs.optional_u64("count").unwrap_or(0) as i32;
let app_data_changes = attrs.optional_u64("appdata").unwrap_or(0) as i32;
let messages = attrs.optional_u64("message").unwrap_or(0) as i32;
let notifications = attrs.optional_u64("notification").unwrap_or(0) as i32;
let receipts = attrs.optional_u64("receipt").unwrap_or(0) as i32;
debug!(
target: "Client/OfflineSync",
"Offline preview: {} total ({} messages, {} notifications, {} receipts, {} app data changes)",
total, messages, notifications, receipts, app_data_changes,
);
client
.core
.event_bus
.dispatch(Event::OfflineSyncPreview(OfflineSyncPreview {
total,
app_data_changes,
messages,
notifications,
receipts,
}));
}
"offline" => {
let mut attrs = child.attrs();
let count = attrs.optional_u64("count").unwrap_or(0) as i32;
debug!(target: "Client/OfflineSync", "Offline sync completed, received {} items", count);
client.complete_offline_sync(count);
let client_clone = Arc::clone(&client);
// Per-connection: the offline flush is tied to THIS connection.
// A reconnect fires the per-connection signal; the old task exits
// and the new connection spawns a fresh flush.
let shutdown = client_clone.connection_shutdown_signal();
client
.runtime
.spawn(Box::pin(async move {
// WA Web: OFFLINE_DEVICE_SYNC_DELAY = 2000ms
futures::select! {
_ = client_clone.runtime.sleep(std::time::Duration::from_secs(2)).fuse() => {
client_clone.flush_pending_device_sync().await;
}
_ = wacore::runtime::wait_for_shutdown(&shutdown).fuse() => {}
}
}))
.detach();
}
"thread_metadata" => {
// Present in some sessions; safe to ignore for now until feature implemented.
debug!("Received thread metadata, ignoring for now.");
}
_ => {
warn!("Unhandled ib child: <{}>", child.tag);
}
}
}
}