ruwa 1.0.0

Rust client for WhatsApp Web
Documentation 
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//! Handler for incoming `<presence>` stanzas.

use super::traits::StanzaHandler;
use crate::client::Client;
use async_trait::async_trait;
use log::debug;
use std::sync::Arc;
use wacore_ng::types::events::{Event, PresenceUpdate};
use wacore_binary_ng::node::Node;

/// Handler for `<presence>` stanzas.
///
/// Parses incoming presence updates and dispatches `Event::Presence` via the event bus.
#[derive(Default)]
pub struct PresenceHandler;

#[async_trait]
impl StanzaHandler for PresenceHandler {
    fn tag(&self) -> &'static str {
        "presence"
    }

    async fn handle(&self, client: Arc<Client>, node: Arc<Node>, _cancelled: &mut bool) -> bool {
        let from = match node.attrs.get("from").map(|v| v.to_string()) {
            Some(f) => f,
            None => {
                debug!(target: "PresenceHandler", "Presence stanza missing 'from' attribute");
                return true;
            }
        };

        let from_jid = match from.parse() {
            Ok(jid) => jid,
            Err(e) => {
                debug!(target: "PresenceHandler", "Failed to parse presence 'from' JID: {}", e);
                return true;
            }
        };

        let presence_type = node
            .attrs
            .get("type")
            .map(|v| v.to_string())
            .unwrap_or_default();

        let unavailable = presence_type == "unavailable";

        // Parse last_seen from 'last' attribute if present
        let last_seen = node
            .attrs
            .get("last")
            .and_then(|v| v.to_string().parse::<i64>().ok())
            .and_then(|ts| chrono::DateTime::from_timestamp(ts, 0));

        debug!(
            target: "PresenceHandler",
            "Received presence from {}: type={}, unavailable={}",
            from, presence_type, unavailable
        );

        client
            .core
            .event_bus
            .dispatch(&Event::Presence(PresenceUpdate {
                from: from_jid,
                unavailable,
                last_seen,
            }));

        true
    }
}